How many standards are enough ? Not a single shop owner that has been at it long enough saw the neo-yuppie explosion that has occured in cycling coming. Nor did many of us think there would come a day that it was marketed just like golf, a minefield of gimmicks and must have garbage that is seemingly in a constant state of flux. And over the last 10 years the pace at which new mechanical "standards" are adopted has been dizzying, so much so now that nothing is standard or unified about most things hitting the market. Most of us owners aren't really complaining as we will be selling people like 123456bmx the new "reasonably priced" "standard" and can quite easily adapt as there isn't a new tool involved (nice change of pace), but who the hell was even asking for this ? Nobody, that's who, this is simply SRAM developing for the sake of sales. Now Im sure we will see Shimano's completely different "unified" standard in response.....should be awesome.
On thing they don't tell you in all these videos is that you may have to use a crank-puller in order to get the pedal arm off. I have to use it every time for my new Trek bike.
As a manufacturer of bottom brackets I can't believe that SRAM market this as a unified standard. This is ridiculous. They've picked a non standard spindle size to add to the headache. This is like a train crash.
The unified part is referring to Sram's "eventually" single spindle size (28.99) GXP and BB30 will be discontinued. Every manufacturer has their own take. The consumer isn't really thought of when new products are developed.
People have big problems when manufacturers change their products, especially Sram. You have to remember that this is just a product refresh not a new "standard" Shimano did the same thing changing from Octalink 1&2 to Hollowtech, Raceface did the same changing from X-type to 30mm Cinch. This is no different, Sram are not making another frame standard. New products are always a step in the right direction, just keep up with it.
So DUB means "Durable Unified Bottombracket" but does it live up to its name? Is it really durable? It is now a time past introduction, so what are the results so far? I did not want to be an early adopter and waited to see how it will work not only in theroy but in the harsh reality.
So I actually just swapped out my 30mm spindle for a dub crank set. And to my surprise they use the same F*** bearings. What SRAM uses to make this new 28.99 spindle work is a plastic sleeve. Complete bullshit, all marketing. If I take the dub sleeves out I can fit my 30mm spindles in no problem.
So what I'm getting from this is that the crankset and spindle are one piece? If so, what is the spindle length? Can't seem to find information on dub spindles. Thanks
Anyone else getting a ‘Tool Time’ vibe from these Park Tool videos? I’m just waiting to hear: “For this you’ll want to reach for the Binford 6100 Bottom Bracket remover.”
There's been a lot of chatter about the various cookie dusters featured in the SRAM DUB video. Then, I come here and it all becomes clear... Sensei Calvin Jones, doumo arigatou!!! ;{0
Let's revive this! I have a Jones LWB Complete that came with a Truvativ Stylo DUB crankset. The crankarms are 3 mm off set, with the drive side crankarm sticking farther out 3 mm more than the non-drive side from the centerline of the frame. I see that Wheels Mfg. makes 0.5 mm DUB Delrin spacers. Can I just remove the installed 4.5 mm Sram DUB spacer on the drive side, and stack up 9 of the Wheels Mfg. 0.5mm spacers on each side of my DUB spindle to achieve a perfectly centered chainline? Or am I going to run into problems? Thanks.
We just used the HHP-2 to install in this video. We do now have drifts/bushings that are sized specifically for DUB that will fit onto the HHP-3, HHP-2 or the BBP-1.2. They are part number 2292-2 and can be purchased directly from us.
So, I am confused. DUB is supposed to be nearly "universal". I am thinking this is only regarding the fit of the bottom bracket to the bike frame. I don't see any reference to DUB being nearly universal regarding cranks. Will only SRAM cranks fit DUB bottom brackets?
Good question. It is not universal in the entire bike world. DUB is the new platform for SRAM. The "SRAM-iverse" is going DUB, so it will be universal in that world. Currently there are three platforms for SRAM. GXP (24/22mm spindle), BB30 (30mm spindle) and now DUB (28.99mm spindle). It seems they want to settle on one, and that is DUB.
There is a plastic insert in the bearing that needs to be popped off if you would like to get in to see the ball bearings. After you pop the insert off you will then have to pop the seal off. These bearing systems are very well thought out and the seal and the insert are shaped to prevent debris from entering.
Does anyone know which spacers I need to use for dub BSA 73mm for a 148mm boost frame and a nx boost (3mm offset) crank? Sram uses 3 terms MTB, MTB wide and superboost +?
Can DUB be use without boost? Lots of groupset come as boost. Looking at buying sram gx or xo dub for my evil Wreckoning but I’m confused 😁 please help and thanks for awesome videos!
Dub cranks can be boost compatible. The difference is the offset of the chainring. If you buy a boost compatible DUB crank you will not have to change anything but if you were to buy a "standard" DUB crankset you would need to change out the chainring to one with the correct amount of offset.
@@parktool The tool i got advised by the shop employee was Park Tool BBT-90.3 Brackettool. He said it was fine for my sram dub pressfit (89/92), only one they were selling, didnt see anything else (neither in webshop)
The BBT-90.3 fits the PF30 and BB30 bottom bracket bearing standards, using a 30mm inside diameter for the bearing. The foot of the BBT-90.3 is too large to fit the slightly smaller DUB bearing. The BBT-90.3 driver is for the pressed bottom brackets in the 24mm standards (and 22), so it fits the BB92, BB86 or PF41 bearings. It is too small for the DUB bearing sizing. The RT-1 in the video is just DUB right.
Do you mean the BBT-30.4 is for the pressed bottom brackets in the 24mm standards (and 22), so it fits the BB92, BB86 or PF41? You wrote BBT-90.3 in both instances in your reply.
Anyone else have trouble removing a dub crankset off of a bike? We've tried everything we can to move that 8mm hex bolt from the drive side on a scott spark.... we are scared of damaging the carbon frame with how much torque we are having to use to try and remove it. and tips?
These are proving to be bears to remove. Using more leverage is the best solution we have come across. Once you have it off be sure to apply grease to the threads upon reinstallation. Great application for a SWB-15 ;)
Funny, but 68 mm BSA is for me essential criteria to buy a bike or not. I worked as a bike mechanic and we use to call pressfit BBs "pressshit". The only advantage with those BBs is, these are much faster and easier to produce and assemble by the manufacturer.
🌲Hey could you please help me, I’ve got the 2019 Scott genius 950 and I have the Sram NX eagle drivetrain with the dub system and this weird looking sort of skinny chainring. I am looking to upgrade the crankset but can I for example get one like the Sram Descendant or GX eagle cranksets (with the bigger chainrings)? And will a BB30 one fit, or what option would I have to get?
A BB30 crank will not fit into a DUB bottom Bracket and is not compatible with your frame. You will need a PF30, DUB, or GXP crank if you are looking in the SRAM family. If you select the GXP or PF30 crank then you will need a new bottom bracket. If you choose a DUB crank then you can use your current bottom bracket. If I were you and was looking to upgrade to a new SRAM crank I would look for a DUB crank, make sure that it is designed to be used with 148mm spacing/boost as well (your bike is boost). If you do not get the 148mm/boost crankset then you will need to get a new chainring for it with the correct amount of offset. So, you might as well get the boost crank from the get go. Hope this helps
When a company claims to develop a new standard to end all current standards, I just think to myself "Yay, yet another standard to worry about". FSA and BH collaborated to try and end the BB30/GXP wars, they also tried to market the standard as "stiffer" because the bottom bracket shells were wider. What people didn't realise is that BB30 aimed to get the cups inboard again to make the Q factor better, this trend for wider and wider bottom brackets isn't comfortable on all-day rides, and it isn't terribly natural either (Graeme Obree will back me up). I hope SRAM do get it right, and that everyone else agrees to use it. I really hate most current pressfit standards, BB30 in particular for being so unbelievably problematic. Oh wait, I don't have to throw my bike away for this one? Okay, I'm totally okay with this!
I want to buy this dub crank and install the new sram gx eagle crankset. Can someone please tell me which bottom bracket to get for my 2020 rockhopper expert and if i need spacers or not? This is all kind of confusing cause looking at the chart i can't figure it out.
Looks like you have a threaded bb. So, the BSA DUB bottom bracket and it appears those bikes have standard MTB spacing so just a 4.5mm spacer is needed on the outboard of the right side.
@@parktool thank you so much for your response @park tool . One more thing, if I was to get a shimano or other name brand crank, how could i figure out what spacer i would need? Is there a formula I need to know to look for? The length of something plus the width of a spacer? Please help this is all confusing lol.
when changing from my old bb30 cx frame to the new with bsa I had to buy a new crankset even if the bb30 one was still good (& expensive). So for me dub would have been an advantage there.
Exactly! So many bb30 cranks were purchased just to be put on a shelf as they did not fit the intended bike. This new change will hopefully keep cranks away from the dusty shelves and instead put them to work on peoples bikes.
No spacer needed behind the BB cups. Just the 4.5 mm spacer that clicks onto the outside of the driveside cup. If you are running a chainguide, bashguard, or emount derailleur then you can run the 2mm spacer on that clicks onto the outside of the cup. Im sure you have been looking at this but here is a link to the installation instructions complete with a chart showing spacer possibilities. www.sram.com/sites/default/files/techdocs/95-6118-019-000_rev_b_dub_mtb_cranksets_and_bottom_brackets.pdf Cheers!
Quick question i wish u would recognize my comment. Coz dis is so important for me. My question is.. would it fit my gxp bottom bracket? Or do i really need to score for a new bb dub series for it? I have a crankset dub series coming this weekend so i hope u guys would notice me. Thanks ciaoo..
This is an good question because is shows what a mess the terminology and names are in the industry. It will take a some text to explain. There is no "GXP" bottom bracket in terms of the frame. The GXP is a term for spindle-to-bearing fit. The SRAM GXP bearing system uses a larger ID bearing on the right, and a smaller ID bearing on the left. If the frame shell is threaded, it can accept threaded adapters for the GXP. Pressed frames can use the pressed GXP adapters. The crank must match this system. SRAM DUB can fit the exact same bike. The DUB crank must have DUB compatible bearings, in terms of the ID fit. If you are getting the DUB crankset, it should come with the DUB bottom bracket. The crank spindle will match correctly to the bearing inside diameter, and all will be good. You cannot however use a DUB crank with a GXP bearing adapter. DUB is not a new frame fit standard. It is a new crank spindle-to-bearing standard.
I own a Trek Boone 2018 GXP Force CX1, I wanted to upgrade so I ordered a pair of Force DUB Cranks and a DUB BB92, took the bike to my local Trek dealer for installation, they told me they are not compatible with my frame.
The DUB spindle is a 28.99mm outside diameter. It is a spindle standard. The "BB30" is refers to the shell, not necessarily the spindle used. When people say "BB30" they commonly mean a press fit bottom bracket with a 42mm diameter bearing OD, and a 30mm bearing ID. So a BB30 would use the spindle of 30mm. DUB would just not fit.
@@parktool I think you are misunderstanding. The axle diameters are different yes we get that. However the splined bit on the end of the axle where the crank mounts onto is not 30mm, it has independent dimensions since on the bb30 and dub axles the step from the end of the spline to the bearing land is slightly different. That tapered spline will have a min diameter for the end of the axle and a max diameter where the spline ends just before the axle steps to either 30mm or 28.99mm.
Okay, such as replacing the arm with a non-DUB? That we would need to try and see how it fits. Certainly SRAM wants the cranks used as a pair. It does seem likely the engineers would "copy and paste" the crank fit, but not necessarily. Remove the retaining ring of the non-DUB, and push it onto the DUB spline, then compare this with the DUB crank. That will give you an idea of the feasibility.
@@parktool yip that's exactly the reason I ask. I have a quarq pm and am considering a new bike that will come with a dub Crank. I don't want to have to buy a new quarq. I'd prefer to just fit my current drive side quarq
I am still running triple crankset and old school bottom bracket (yes, 10sp is now old school). The single speed crankset crowd stares at my machine with arrogance until I kick their silly assses down the descent. These new bottom brackets offer nothing new to performance...at all.
i’m having trouble trying to find information regarding what spacers to use with my 73mm dub bb install on my santa cruz 5010, i plan to use an iscg05 bash guard and idk if that counts as a spacer or not... can anyone assist ?
Looks like you will want a 2mm spacer on the outer right and that is all. www.servicearchive.sram.com/sites/default/files/techdocs/95-6118-019-000_rev_e_dub_mtb_cranksets_and_bottom_brackets.pdf
@@parktool What would happen to your drivetrain if I accidently put in the inner 2.5 spacers L/R on a 73mm frame shell? So far I haven't had any issues, but wondering if I should taken them off?
Good question. Most of Treks new MTN bikes are coming with a BB92 which will work great with DUB. In the past Treks have come with bb90's which are not compatible. As for Huffy you are good to go. You may need an adapter on some of them though. Eric Patterson
Good question, meaning the answer is yes, and, no. The cycling industry has do us not favor with the terminology. It mixes spindles and shell terms all the time. The BB30 is a frame standard that is not threaded, with 42mm nominal inside diameter. You can have a threaded bottom bracket accept threaded bearing cups that will accept a 30mm spindle. The 30mm spindle is the norm of the BB30 world. The boost system refers to the rear spacing and boost compatible arms move the front ring to accommodate. So you cannot have a threaded BB30. You can have a crank with the 30mm spindle to fit thread cups in threaded bottom bracket. This video was about DUB, not the 30mm spindles, but these also use rings to make them boost compatible. Simple, yes?
@@parktool I got scout 290 frame with 73mm BB shell. I bought hope bb30 that screws in my frame no problem. Bought GX sram boost crank and it doesn't fit. No clearance for crank (it touches the frame) and as I tight up the cranks with 8mm Allen it james solid
A BB30 crank will only fit a BB30 bike. It can get confusing as there are BB30 cranks and BB30/PF30 cranks from SRAM. The BB30 cranks will only fit BB30 frames but the BB30/PF30 will fit many other standards. The spindle is longer with a wider q factor allowing more clearance. To see if your spindle can be compatible measure the spindle length. Measurement is taken from the inside face of the crank arm to the very end of the spindle with all adjusters and spacers removed. 104mm+ means you can get it to work. Any less and that crank will not work on the bike.
The only thing that I have learned from this video was what actually DUB stands for. Everything else was just a ParkTool tools advertisement..........bruh
Thanks for Reply , just too many Standards of Bottom Bracket shell ( press fit , bb30,pf30,bb86,bb92,bb121,bb90,bb95,bbright ,bbevo. WTF !!!!!!!!! I still have a Square Taper - White Industries Crank triple Ring MTB FORGED !!! made in USA . 68mm Threaded Still works . TO THE FUTURE !!!!!!!!!!!!!!!!!!!!!!!! Forged CARBON ?
Well, not quite. DUB is a spindle fit standard. There is a DUB-pf30, as well as a DUB-bb30, and also the threaded BSA. GXP will go away, but the frame fits are the same.
Park Tool what I meant is this: I feel like press fit is going away. At least in mountain bikes manufacturers are moving away from pf30 back to threaded. Still lil bit lighter for road Bikes. Not worth the grams in my opinion. I personal don’t like press fit and there tendency to creak. know there are methods to deal with it. Shouldn’t have to. Sucks when customer drops some serious cash on a nice bike and it creaks. I think manufacturers do it because it is cheaper. They eliminate the threading step or bonding a aluminum insert into a carbon frame. Lame.
at first i thought it was like that style of video with american voices over the japanese video.... then i reazlized the gimmick..... they DUB-ed their voices
Another marketing scam "compatible with all frames out there". Well, I bought some dub force cranks, then to find out my frame IS NOT DUB COMPATIBLE, its a Trek 2018!... Scam for me it is
😂😂I restarted the video twice thinking it was my internet connection giving me the sketchy audio
DUBbed: en.wikipedia.org/wiki/Dubbing_(filmmaking)
😂
"There are too many standards...let's make a new one!" HAHAHAahhahaAHAHa bike industry strikes again!
that removal tool is genius in its simplicity and function. I love you guys
at first I was put off by that intro but it was actually the most clever thing I've seen all week.
Classic video.
Love the voice dub over.
Looks like a pretty sweet design. I love how easy it is to adjust bearing play.
Basically it's Race Face Cinch from Sram. Sram even uses same 30mm inner diameter bearings plus plastic bushing.
As a bike shop owner... yay! Yet more complication for bottom brackets!
I almost typed exactly the same thing haha.
Reginald Scot cry me a river you know what you got in to.
How many standards are enough ? Not a single shop owner that has been at it long enough saw the neo-yuppie explosion that has occured in cycling coming. Nor did many of us think there would come a day that it was marketed just like golf, a minefield of gimmicks and must have garbage that is seemingly in a constant state of flux. And over the last 10 years the pace at which new mechanical "standards" are adopted has been dizzying, so much so now that nothing is standard or unified about most things hitting the market. Most of us owners aren't really complaining as we will be selling people like 123456bmx the new "reasonably priced" "standard" and can quite easily adapt as there isn't a new tool involved (nice change of pace), but who the hell was even asking for this ? Nobody, that's who, this is simply SRAM developing for the sake of sales. Now Im sure we will see Shimano's completely different "unified" standard in response.....should be awesome.
If they stop on that it will be ok.
Yay more sales because people like new stuff and don't know how to service their bikes =)
nice. As a starting bicycle repairer I'm jealous of your tools
On thing they don't tell you in all these videos is that you may have to use a crank-puller in order to get the pedal arm off. I have to use it every time for my new Trek bike.
As a manufacturer of bottom brackets I can't believe that SRAM market this as a unified standard. This is ridiculous. They've picked a non standard spindle size to add to the headache. This is like a train crash.
The unified part is referring to Sram's "eventually" single spindle size (28.99) GXP and BB30 will be discontinued.
Every manufacturer has their own take. The consumer isn't really thought of when new products are developed.
...but would you like another helping of watermelon-cantaloupe shortcake fruit cake? (& would a dessert by any other name smell so sweat?) ;)
Just another consumer that has resistance to progress
So Aaron, would you say this is a 'dub'-step in the right direction?!?! ;)
People have big problems when manufacturers change their products, especially Sram. You have to remember that this is just a product refresh not a new "standard" Shimano did the same thing changing from Octalink 1&2 to Hollowtech, Raceface did the same changing from X-type to 30mm Cinch. This is no different, Sram are not making another frame standard. New products are always a step in the right direction, just keep up with it.
At least I am glad that I do not need a new 🔨. But that aside good video, keep it up guys!
uhmm ahcktshually... you'll void the warranty if you don't use a mallet crafted from moon wood :'D
So DUB means "Durable Unified Bottombracket" but does it live up to its name? Is it really durable? It is now a time past introduction, so what are the results so far? I did not want to be an early adopter and waited to see how it will work not only in theroy but in the harsh reality.
From my understanding its really a BSA consolidation which is good for retro and forward upgrades.
Bearings in the bb92 version will be tiny! Just like 4130 bearings. Useless.
So I actually just swapped out my 30mm spindle for a dub crank set. And to my surprise they use the same F*** bearings. What SRAM uses to make this new 28.99 spindle work is a plastic sleeve. Complete bullshit, all marketing. If I take the dub sleeves out I can fit my 30mm spindles in no problem.
So what I'm getting from this is that the crankset and spindle are one piece? If so, what is the spindle length? Can't seem to find information on dub spindles. Thanks
Great a crank that fits anything with the correct BB. I just hate Sram’s pre load adjuster. Flimsy.
I bought a Cube Analog 2020 hardtail and it has SX Eagle powerspline crank. Can I buy an NX crank and it will fit or which new BB will I need? tia
Anyone else getting a ‘Tool Time’ vibe from these Park Tool videos? I’m just waiting to hear: “For this you’ll want to reach for the Binford 6100 Bottom Bracket remover.”
BSA is for Birmingham Small Arms, not "British standard something"
True! A common misnomer.
Witch SRAM NX Eagle Dub should i buy for a FATBIKE with a 100mm square taper bb ? Thx
Best intro ever!
There's been a lot of chatter about the various cookie dusters featured in the SRAM DUB video. Then, I come here and it all becomes clear... Sensei Calvin Jones, doumo arigatou!!! ;{0
Calvin is such a player.
I know I'm late, but the preload adjuster is what gxp needed from the start. Gxp was too reliant on the bottom bracket being the perfect width.
Let's revive this! I have a Jones LWB Complete that came with a Truvativ Stylo DUB crankset. The crankarms are 3 mm off set, with the drive side crankarm sticking farther out 3 mm more than the non-drive side from the centerline of the frame. I see that Wheels Mfg. makes 0.5 mm DUB Delrin spacers. Can I just remove the installed 4.5 mm Sram DUB spacer on the drive side, and stack up 9 of the Wheels Mfg. 0.5mm spacers on each side of my DUB spindle to achieve a perfectly centered chainline? Or am I going to run into problems? Thanks.
BSA stands for Birmingham Small Arms, as they were the company who developed the thread.
Thats correct. Check 6 comments down as well.
Thanks guys, awesome as you say
Hi Park Tool, what drift/bushing are you using to press the dub bearings in? Would I need to purchase separately from the hhp-3 press? Thanks!
We just used the HHP-2 to install in this video. We do now have drifts/bushings that are sized specifically for DUB that will fit onto the HHP-3, HHP-2 or the BBP-1.2. They are part number 2292-2 and can be purchased directly from us.
Would be interesting to see how it goes on a BB30 frame. Great idea, one crank and various bb for every frame out there almost.
So, I am confused. DUB is supposed to be nearly "universal". I am thinking this is only regarding the fit of the bottom bracket to the bike frame. I don't see any reference to DUB being nearly universal regarding cranks. Will only SRAM cranks fit DUB bottom brackets?
Good question. It is not universal in the entire bike world. DUB is the new platform for SRAM. The "SRAM-iverse" is going DUB, so it will be universal in that world. Currently there are three platforms for SRAM. GXP (24/22mm spindle), BB30 (30mm spindle) and now DUB (28.99mm spindle). It seems they want to settle on one, and that is DUB.
@parktool will the “dub pressfit”, fit a Trek bb that 89/91.5? It on a 2016 Trek Slash 8
thanks guys!
I effing love these guys
What's the best way to service the bearings? Pulled the cranks (holy crap!), but it seems to be a hard shield on the outside.
There is a plastic insert in the bearing that needs to be popped off if you would like to get in to see the ball bearings. After you pop the insert off you will then have to pop the seal off. These bearing systems are very well thought out and the seal and the insert are shaped to prevent debris from entering.
I was originally very opposed to dub but I think sram does make some good points about 30mm standard and 24mm/gxp and the advantages of a new size
Aloha, always entertaining and some great info. Thanks!!
Did you even mention the spindle size difference?
Does anyone know which spacers I need to use for dub BSA 73mm for a 148mm boost frame and a nx boost (3mm offset) crank? Sram uses 3 terms MTB, MTB wide and superboost +?
nice video guys thanks for the great info!
Damn, that crank drop.
Can DUB be use without boost? Lots of groupset come as boost. Looking at buying sram gx or xo dub for my evil Wreckoning but I’m confused 😁 please help and thanks for awesome videos!
Dub cranks can be boost compatible. The difference is the offset of the chainring. If you buy a boost compatible DUB crank you will not have to change anything but if you were to buy a "standard" DUB crankset you would need to change out the chainring to one with the correct amount of offset.
Sram is the 2nd best drive train component brand in the world! Because there are only 2.
Campagnolo, Microshift, Rotor, FSA.
Lets be serious, they aren't competition.
Box
Cycgnr nobody said it had to be competition you just said there are only 2 drivetrain brands
What about sun tour, but do they even make drivetrains anymore?
What bearing size does the DUB PF30 use?
The SRAM DUB PF30 bottom bracket uses a proprietary bearing. The entire bottom bracket will need to be replaced if it is damaged or worn out.
what tool should i use for removing dub pressfit? bbt-90 is too small
Use the RT-1, race tool. Fits headset cups and DUB. Add a hammer and out they come.
www.parktool.com/product/head-cup-remover-rt-1
I understand it's new and easier, but why is it easier. What's the difference between my 30mm spindle?
I bought that tool from 2:17, to get my SRAM DUB Pressfit out of the frame.. but the tool goes straight through it..
Are you sure it is the RT-1?
The tool shown is a RT-1. Is that what you have? The BBT-90.3 is smaller and is for a different standard.
@@parktool The tool i got advised by the shop employee was Park Tool BBT-90.3 Brackettool. He said it was fine for my sram dub pressfit (89/92), only one they were selling, didnt see anything else (neither in webshop)
Unfortunately the RC-1 is the correct tool. The BBT-90.3 is too small, as you found out.
Park Tool: What's the difference between the pressfit BB removal tool you showed here (BBT-90.3) and the BBT-30.4?
The BBT-90.3 fits the PF30 and BB30 bottom bracket bearing standards, using a 30mm inside diameter for the bearing. The foot of the BBT-90.3 is too large to fit the slightly smaller DUB bearing. The BBT-90.3 driver is for the pressed bottom brackets in the 24mm standards (and 22), so it fits the BB92, BB86 or PF41 bearings. It is too small for the DUB bearing sizing.
The RT-1 in the video is just DUB right.
Do you mean the BBT-30.4 is for the pressed bottom brackets in the 24mm standards (and 22), so it fits the BB92, BB86 or PF41? You wrote BBT-90.3 in both instances in your reply.
I apologize. The BBT-30.4 is for 30mm and the BBT-90.3 is for 24mm and 22mm.
will a dub bottom bracket work with an SX crank
See SRAM for the info. Find the SX crank, and see if it is listed as DUB compatible.
What about the spindle-
Is it steel or aluminium?
And is removable like bb30?
It is ALU and is not removable.
parktool bike?
bik-1?
blue color-scheme?
easy to maintain bike?
just ideas.
I guess Praxis Works must be happy.
Anyone else have trouble removing a dub crankset off of a bike? We've tried everything we can to move that 8mm hex bolt from the drive side on a scott spark.... we are scared of damaging the carbon frame with how much torque we are having to use to try and remove it. and tips?
These are proving to be bears to remove. Using more leverage is the best solution we have come across. Once you have it off be sure to apply grease to the threads upon reinstallation. Great application for a SWB-15 ;)
Funny, but 68 mm BSA is for me essential criteria to buy a bike or not. I worked as a bike mechanic and we use to call pressfit BBs "pressshit". The only advantage with those BBs is, these are much faster and easier to produce and assemble by the manufacturer.
🌲Hey could you please help me, I’ve got the 2019 Scott genius 950 and I have the Sram NX eagle drivetrain with the dub system and this weird looking sort of skinny chainring. I am looking to upgrade the crankset but can I for example get one like the Sram Descendant or GX eagle cranksets (with the bigger chainrings)? And will a BB30 one fit, or what option would I have to get?
A BB30 crank will not fit into a DUB bottom Bracket and is not compatible with your frame. You will need a PF30, DUB, or GXP crank if you are looking in the SRAM family. If you select the GXP or PF30 crank then you will need a new bottom bracket. If you choose a DUB crank then you can use your current bottom bracket. If I were you and was looking to upgrade to a new SRAM crank I would look for a DUB crank, make sure that it is designed to be used with 148mm spacing/boost as well (your bike is boost). If you do not get the 148mm/boost crankset then you will need to get a new chainring for it with the correct amount of offset. So, you might as well get the boost crank from the get go. Hope this helps
Park Tool Thank you so much for the help 🙏🏻
how much were they paid to feature this one
Kazak Thranduil, I guess nothing AS SRAM probably sells their own tool line.
Well I think they're each paid salaries to show things by Major manufacturers they're not going to show a spindle you made at your house
When a company claims to develop a new standard to end all current standards, I just think to myself "Yay, yet another standard to worry about". FSA and BH collaborated to try and end the BB30/GXP wars, they also tried to market the standard as "stiffer" because the bottom bracket shells were wider. What people didn't realise is that BB30 aimed to get the cups inboard again to make the Q factor better, this trend for wider and wider bottom brackets isn't comfortable on all-day rides, and it isn't terribly natural either (Graeme Obree will back me up).
I hope SRAM do get it right, and that everyone else agrees to use it. I really hate most current pressfit standards, BB30 in particular for being so unbelievably problematic.
Oh wait, I don't have to throw my bike away for this one? Okay, I'm totally okay with this!
I want to buy this dub crank and install the new sram gx eagle crankset. Can someone please tell me which bottom bracket to get for my 2020 rockhopper expert and if i need spacers or not? This is all kind of confusing cause looking at the chart i can't figure it out.
Looks like you have a threaded bb. So, the BSA DUB bottom bracket and it appears those bikes have standard MTB spacing so just a 4.5mm spacer is needed on the outboard of the right side.
@@parktool thank you so much for your response @park tool . One more thing, if I was to get a shimano or other name brand crank, how could i figure out what spacer i would need? Is there a formula I need to know to look for? The length of something plus the width of a spacer? Please help this is all confusing lol.
Each brand will have technical documents walking you through the desired setups. Those documents can be found on the manufacturers page, typically.
when changing from my old bb30 cx frame to the new with bsa I had to buy a new crankset even if the bb30 one was still good (& expensive).
So for me dub would have been an advantage there.
Exactly! So many bb30 cranks were purchased just to be put on a shelf as they did not fit the intended bike. This new change will hopefully keep cranks away from the dusty shelves and instead put them to work on peoples bikes.
Park Tool one more reason to buy the more expensive crank now lol
for my new build with 73bsa i need no spacer under the dub bb right?
No spacer needed behind the BB cups. Just the 4.5 mm spacer that clicks onto the outside of the driveside cup. If you are running a chainguide, bashguard, or emount derailleur then you can run the 2mm spacer on that clicks onto the outside of the cup. Im sure you have been looking at this but here is a link to the installation instructions complete with a chart showing spacer possibilities. www.sram.com/sites/default/files/techdocs/95-6118-019-000_rev_b_dub_mtb_cranksets_and_bottom_brackets.pdf
Cheers!
Quick question i wish u would recognize my comment. Coz dis is so important for me.
My question is.. would it fit my gxp bottom bracket? Or do i really need to score for a new bb dub series for it? I have a crankset dub series coming this weekend so i hope u guys would notice me. Thanks ciaoo..
This is an good question because is shows what a mess the terminology and names are in the industry. It will take a some text to explain.
There is no "GXP" bottom bracket in terms of the frame. The GXP is a term for spindle-to-bearing fit. The SRAM GXP bearing system uses a larger ID bearing on the right, and a smaller ID bearing on the left. If the frame shell is threaded, it can accept threaded adapters for the GXP. Pressed frames can use the pressed GXP adapters. The crank must match this system. SRAM DUB can fit the exact same bike. The DUB crank must have DUB compatible bearings, in terms of the ID fit. If you are getting the DUB crankset, it should come with the DUB bottom bracket. The crank spindle will match correctly to the bearing inside diameter, and all will be good. You cannot however use a DUB crank with a GXP bearing adapter. DUB is not a new frame fit standard. It is a new crank spindle-to-bearing standard.
I own a Trek Boone 2018 GXP Force CX1, I wanted to upgrade so I ordered a pair of Force DUB Cranks and a DUB BB92, took the bike to my local Trek dealer for installation, they told me they are not compatible with my frame.
Is the Crank mounting interface the same as for BB30?
The DUB spindle is a 28.99mm outside diameter. It is a spindle standard. The "BB30" is refers to the shell, not necessarily the spindle used. When people say "BB30" they commonly mean a press fit bottom bracket with a 42mm diameter bearing OD, and a 30mm bearing ID. So a BB30 would use the spindle of 30mm. DUB would just not fit.
@@parktool I think you are misunderstanding. The axle diameters are different yes we get that. However the splined bit on the end of the axle where the crank mounts onto is not 30mm, it has independent dimensions since on the bb30 and dub axles the step from the end of the spline to the bearing land is slightly different. That tapered spline will have a min diameter for the end of the axle and a max diameter where the spline ends just before the axle steps to either 30mm or 28.99mm.
Okay, such as replacing the arm with a non-DUB? That we would need to try and see how it fits. Certainly SRAM wants the cranks used as a pair. It does seem likely the engineers would "copy and paste" the crank fit, but not necessarily. Remove the retaining ring of the non-DUB, and push it onto the DUB spline, then compare this with the DUB crank. That will give you an idea of the feasibility.
@@parktool yip that's exactly the reason I ask. I have a quarq pm and am considering a new bike that will come with a dub Crank. I don't want to have to buy a new quarq. I'd prefer to just fit my current drive side quarq
I am still running triple crankset and old school bottom bracket (yes, 10sp is now old school). The single speed crankset crowd stares at my machine with arrogance until I kick their silly assses down the descent. These new bottom brackets offer nothing new to performance...at all.
i’m having trouble trying to find information regarding what spacers to use with my 73mm dub bb install on my santa cruz 5010, i plan to use an iscg05 bash guard and idk if that counts as a spacer or not... can anyone assist ?
Looks like you will want a 2mm spacer on the outer right and that is all. www.servicearchive.sram.com/sites/default/files/techdocs/95-6118-019-000_rev_e_dub_mtb_cranksets_and_bottom_brackets.pdf
@@parktool What would happen to your drivetrain if I accidently put in the inner 2.5 spacers L/R on a 73mm frame shell? So far I haven't had any issues, but wondering if I should taken them off?
does anyone know how to change the left side of dub system?
SRAM® considers the left arm to be permanent and is not to be removed.
I have a question dub is good on huffy and trek bikes !!
Good question. Most of Treks new MTN bikes are coming with a BB92 which will work great with DUB. In the past Treks have come with bb90's which are not compatible. As for Huffy you are good to go. You may need an adapter on some of them though. Eric Patterson
rolling on dubz
BUUURRRN IT! WITCHCRAFT!
Is it possible to have bb30 threaded MTB on boosted frame ?
Good question, meaning the answer is yes, and, no. The cycling industry has do us not favor with the terminology. It mixes spindles and shell terms all the time.
The BB30 is a frame standard that is not threaded, with 42mm nominal inside diameter. You can have a threaded bottom bracket accept threaded bearing cups that will accept a 30mm spindle. The 30mm spindle is the norm of the BB30 world. The boost system refers to the rear spacing and boost compatible arms move the front ring to accommodate.
So you cannot have a threaded BB30. You can have a crank with the 30mm spindle to fit thread cups in threaded bottom bracket. This video was about DUB, not the 30mm spindles, but these also use rings to make them boost compatible.
Simple, yes?
@@parktool I got scout 290 frame with 73mm BB shell. I bought hope bb30 that screws in my frame no problem. Bought GX sram boost crank and it doesn't fit. No clearance for crank (it touches the frame) and as I tight up the cranks with 8mm Allen it james solid
A BB30 crank will only fit a BB30 bike. It can get confusing as there are BB30 cranks and BB30/PF30 cranks from SRAM. The BB30 cranks will only fit BB30 frames but the BB30/PF30 will fit many other standards. The spindle is longer with a wider q factor allowing more clearance. To see if your spindle can be compatible measure the spindle length. Measurement is taken from the inside face of the crank arm to the very end of the spindle with all adjusters and spacers removed. 104mm+ means you can get it to work. Any less and that crank will not work on the bike.
@@parktool I will throw that hope bb30 away and go with dub. thank you for replies I appreciate it
Refreshed the video at the start because I thought my audio was out of sync.
Took me a min :-)
and the good thing is that all these 5 tools will cost only just under 6k
The only thing that I have learned from this video was what actually DUB stands for. Everything else was just a ParkTool tools advertisement..........bruh
I think Christian Bale can play Calvin in his biopic...
Cant you even show us the bb bearing. What is the difference
PLis un canal alternativo en español
I'm sensing some cynical undertones :)
They make it obvious they feel DUBbed.
this will work 68mm threaded shell ?
Yes this will. It comes with spacers for install on that setup.
Thanks for Reply , just too many Standards of Bottom Bracket shell ( press fit , bb30,pf30,bb86,bb92,bb121,bb90,bb95,bbright ,bbevo. WTF !!!!!!!!!
I still have a Square Taper - White Industries Crank triple Ring MTB FORGED !!! made in USA . 68mm Threaded
Still works .
TO THE FUTURE !!!!!!!!!!!!!!!!!!!!!!!! Forged CARBON ?
Its just same as the race face cinch which is owned by sram
Fox Shox is the proud owner of RaceFace.
Sram can dub off
Nice all Video end your help me please how to old bicycle build the new bicycle repenting staring train shock absorber
Pf30 and bb30 is dead. Thank god! Gxp sucks.
SRAM is covering there ass with the return to threaded bottom bracket shells on new bikes.
Well, not quite. DUB is a spindle fit standard. There is a DUB-pf30, as well as a DUB-bb30, and also the threaded BSA. GXP will go away, but the frame fits are the same.
Park Tool what I meant is this:
I feel like press fit is going away.
At least in mountain bikes manufacturers are moving away from pf30 back to threaded.
Still lil bit lighter for road Bikes. Not worth the grams in my opinion.
I personal don’t like press fit and there tendency to creak.
know there are methods to deal with it. Shouldn’t have to.
Sucks when customer drops some serious cash on a nice bike and it creaks.
I think manufacturers do it because it is cheaper. They eliminate the threading step or bonding a aluminum insert into a carbon frame. Lame.
Okay then. Just when we thought is was all setting down in BB land, we have...........T47.
A chainset to rule them all but actually doesn't.
Thats the dubmest thing sram made😂
at first i thought it was like that style of video with american voices over the japanese video.... then i reazlized the gimmick..... they DUB-ed their voices
DU(M)B
LMFAO @ SRAM DUB!!! Kinda sad really
Dub is a word derived from dumb.
More SRAM crap! You can’t buy a threaded DUB BB or compatible cranks in the U.K. I’m amazed sram hasn’t gone bust!
Another marketing scam "compatible with all frames out there". Well, I bought some dub force cranks, then to find out my frame IS NOT DUB COMPATIBLE, its a Trek 2018!... Scam for me it is
cooollll
maybe im high
🤣
Thats awsome!!!!!!!!!!!!!!!!!!!!! im the 2nd comenter!!!!!! YAY. LOL