$25 BUDGET MULLET!! // Shimano GRX + XT
Вставка
- Опубліковано 1 жов 2024
- DIY Modification: XT cage installed on a GRX 812 11-speed derailleur lets you shift through an 11-51T cassette. No tan pans, no goat links, no 3rd party components!
Update (yes, with properly sized chain)
• The Rear Derailleur EX...
Parts used:
M8000 XT SGS cage, Inner (Y5RT10000): amzn.to/3SdC2S0
M8000 XT SGS cage, Outer (Y5RT98090): amzn.to/48OUh7u
GRX 812 RD: amzn.to/42cUX44
Same result, different approach:
• It Works!! // The $127...
Support the channel!
www.thebikesau...
What I like about this that had me seek out a 2x10 SWORD instead of GRX was the Microshift gave you lower gear range to work with. Thats actually lower than my 12 speed XC bike's ratio.
I love mods like these, I've been gravel riding for 3 years now with a 52t cassette and 36t chainring, these gears are 100% required for any gravel climb.
I agree, your setup is about 19-90mgearinches if im calculating it correctly. I have a Topstone w the GRX 800 and a wolflink on a double. 46/28 up front w a 11-46 cassette and I have 17-115 gearinches.
@@GasmanA nice! I think I would need you gearing if I was doing bike packing
36-52 is a common MTB setup
@@GasmanA is such low gearing necessary, or would you just end up spinning out even on a loaded setup, or perhaps too slow and lose balance, or even just too slow at 3km/h and might as well just walk? I wonder what is a practical low gear ratio
36t x11t on the other side = spin out
as for installing that peg back on to the cage, you should tape it to the screw driver. So this way itll stay attached to the screw driver without needing a 2nd person or keep on falling out.
Seems like you could stick something, like a rolled up rag or a small cardboard box, between the cage and the derailleur to hold it open. Then, you'd have both hands free.
There you go. A block of appropriate size would work just fine 👍
just dab your screwdriver in some assembly grease and that fairly light screw will stick. or get the fancy magnetised one.
Helpful hints guys, much appreciated. I will try to mod my rd-rz812 this evening 😅
For over a year ago we successfully built a similar upgrade, "bit" more expensive with Ultegra RX derailleur, Garbaruk cage and pulley wheels. But to further extend the range, we ADDED a GRX front derailleur and a FSA Gossamer pro 2x crankset, 30-46, works just fine. (thus even reducing the q-factor to 151mm and extending only by 3mm the crank length to 155mm for the kid)
That's interesting. Can you tell which Garbaruk cage is compatible with the RX derailleur?
That's a lot of range
@@thecleaner81 I looked our order up, it was RD cage for Shimano GRX 11s, though I can't tell a difference by the websites pictures from the (general) Shimano 11s, or if the Di2 versions (GRX Di2 &, XT/XTR Di2) are differently shaped. Note; Manufacturer's website says 1x only - never mind, don't be afraid to try and check with your chainline. 2nd note: we tried at first with the standard GRX pulley wheels, but in the largest (and the smallest?, can't remember) cog the - unfortunately very nice but no bargain - oversized pulley wheels by Garbaruk were better, no chain rub at the cage.
Don't you have a lot of redundant/overlapping gears with a big cassette and 2x cranks?
@@peterscott4183 theoretical probably but out in the field, it doesn't matter and nobody cares. Once the chain line gets too diagonal and the drivetrain too noisy (chainrub on FD and cogs), you don't have to, but usually simply switch rings. With those wide range cassettes you then basically have two 1x setups where you optimize the chainline. Bottom line, we don't shift in an mathematical sequential order if gearing, but how it makes sense in the terrain. Width of range without converting to 1x12 on Shimano HG was the goal and we have it. Once it gets really steep, you're in the small ring and that's it. The bike originally was equipped with a 32T 1x chainring with let the kid always be the slowest esp. in combo with the small wheels whe upsized a year later when he grew. So much better now, he's confident, reasonably quick among the older/bigger riders and foremost happy riding.
Heads up: according to the Shimano manual, the plate axle should be torqued to 8-10 Nm, not 2 Nm
I am running this in 2x on my gravel bike. Rx600 46-30 crankset with a 11sp 11-51T on the rear using the grx 822-sgs derailleur. The 12 spd derailleur works acceptably with 11 spd shifters. The gearing range is amazing when bike packing on steep sections without sacrificing top speed.
Wow, that's a great combo!! Is the RD total capacity enough to use all gears?
All but small and small, but the chain alignment doesn't allow that really anyway. 46 front in 11T rear and 30 front in 51t rear works fine.
Got it! Thanks for the info!!
GTK! I'm planning to run an 11-speed 42-11 with 46-30 cranks, RX-600, and GRX-812. First I'll try it without this cage replacement, but I happen to have a spare M8000 off a cracked frame.
@@shreddagorge I've run 10-speed 11-42 with GRX FC-RX800-2 48-31 cranks with the GRX RD-RX400 RD (which has the SGS cage already) and claims "only" 36T max cog and 41T total capacity.
Any chance of doing this with the 810 grx? Heck, can you try this with a 2x for infinite range and see where the capacity actually holds the setup back?
Haven't tried with an 810 but rx will get to 46 on a 2x.
This is EXACTLY what I've been looking for! Looks like I'm ordering some parts! Cheers
I was lazy enough to try this RX812 / 11-51t M5100 setup without even doing this mod. The result was... well, it works! The B-screw is all the way in but it shifts smoothly across all the gears. I'm using a 38t Wolftooth chainring with 11s Shimano chain.
Did you need to add a goat link to make it work without the SGS cage?
@@jamescourier1545 No, just a stock 812 directly on the derailleur hanger. It’s been working flawlessly for a couple of months. It’s way out of the officially announced gear range so nobody would even think of trying. I can’t paste the link here due to YT regulation, but there’s a video of someone trying out this setup.
What length chain did yoh used? 116 or 118?
@@Nevseremos1 116, i think. Just a normal shimano hg chain. The chainstay on my bike is quite short (420mm), though.
Have this mod for almost two years, but on 2x setup - works flawlessly! Had to install a smaller 11-42 cassette, though. With 11-46 I have to compromise either extreme biggy-biggy option, or small-small because of the capacity.
What chainring combo were you using?
@@drucyphr it's grx 810 double chainring: 48-31
Did you use the exact same parts, RD and cage as shown in this video? Was also thinking about extending the range of my current 2-by GRX setup
@@MrSchoeppel same question. cheers
@@MrSchoeppel yep, XT M8000 SGS cage + GRX RD-812 derailleur + much longer chain + b-screw adjustments
Nice stuff !!! I have a GRX810 RD, I wonder if this would still apply, or if there is anything else different other than the cage for the 2x version of the derrailleur ...
Would this work with other XT models than the M8000? Everyone is sold out of M8000 SGS cages, but there are many M786 SGS cages online
Well done with sufficient for us DIYers to do successfully. Thanks
Very detailed and well-organized presentation of a worthwhile kludge for ppl interested in fighting the good fight against the deliberate incompatibility issues Shimano has decided to give its customers for the past decade or so.... Awesome video.
Great video! I would love to see something similar for a SRAM XPLR ETAP drivetrain
Fantastic idea. My second hand gravel bike came with a Garbaruk setup to get a wide range 11spd. If I were doing it myself, this is a much cheaper way to get the same end result
But then you wouldn't have those big, sexy jockey wheels
Would it be possible to get an update on how this setup has been performing now that you've put a number of miles on it? Also, how is the shifting performance in the smaller gears?
Stoke to try this if it's what you recommend for getting a bigger cassette to work with a GRX600 drive train.
Hi! I've done this mod 2-3 months ago, while upgrading form 2x9 Sora that was as stock preset on my bike. I've done around 800km, had one bigger crash (bended hanger) and everything works perfect. I'm on 40 chain ring (Grx 800 with InPeak power meter) and Shimano 11-51 Deore 5100 cassette. I bought 138 link chain and shortened it to proper length. There's no strange sounds on hard gears (11T). On 51 ring there's little bit of cracking due to big chain crossing from front to back, but it's not much bigger than on my 1x12 Enduro bike, so for me it was perfect deal.
If you'd like to have 1x system with good climbing potential - go for it! 😊
Great inexpensive solution. Genius! Does anyone know which Shimano 11=51 11 speed cassette weighs the least? Thanks!!!
M5100 650g
Prob a dumb question... Would adding a larger Lower Lockey Wheel simulate a longer cage? Or am I completely not understanding what is gained.
That’s a solid idea. It could potentially increase the drivetrain capacity, but it wouldn’t help with the max cog spec.
i notice some discussion around 2x set ups. i found the grx 11 speed rear mech actually takes a 11-40 quite readily. with a 46/30 chain ring, ithe 30 to the 40 will be sufficient for many.
I have been wondering this, if it would work. Would be nice to see someone test it out in their cave of bad ideas. 😄
@@positiivi_temeI’ve see several people on Reddit saying it worked. The 11-40 is in my wishlist (I’m currently rocking the standard GRX812 2x 46-30 setup, with the 11-34 cassette)
It worked for me, I have the GRX 812 RD with 46/30 front and 11-40 rear. Going to try the same thing with the GRX 400 soon
@MeowHikes did you modify the cage of the 812? Or stock
Hello. I really liked this modification. Congratulations on the idea and thanks for sharing. One question: Does this cage also work on the GRX400?
Would love to know too!
you tried?
Anybody think you could do this with GRX 400 10-speed for a 1x setup?
i would like to know
Great tutorial. I followed it and put a Shimano Deore CSM5100 11/51 on, after some tuning errors on my part, corrected on the 2nd ride, it works great, I don't notice any noise on the lowest gears. It feels faster/smoother than the stock Sunrace 11/42 though I've only a sample size of 1.
Before my 1st ride I did add 2 links to the 116 HG701 I was running while the bike was in the stand as it was making noise in the lowest cogs, it also seemed the top pully had little contact. It did seem to reduce the noise in the stand but that could have been my initial tuning error, or because I was using Hope pully wheels rather than Shimano.
Thank you, you've transformed my ride.
I'm looking to buy this RD and do this mod, pairing with a 38 or 40T up front. Do you reckon it would be better to buy the 126 link chain then and cut it down instead of the 116?
@@ChilkoNZyes get the longest chain you can the cut whatever you don’t need.
I assumed I also can try use Cage RD Deore M5100 SGS
I did not have luck trying to dial in the RX822 on my 11 speed setup with the 11-51t cassette. This looks definitely doable. I would love to hear which mod you think works better (RX822 12 speed vs. this). I'm ready to give another try with the 12 speed derailleur, but if this works equally as good I'm in!
anyways, this works like butter. Forget the 12speed derailleur. Now I'm 11/51 in the back with a 36t chainring loving life
hold on, did you ride the GRX 812 with two chainrings?
i was thinking of doing that but everybody tells me the proper way to do it is to get the GRX 810
the video was awesome thanks. subscribed!
Wow! So, basically you put XT derailler cage plates on your rear derailleur? Will this modification, XT cages on a Dura-Ace derailleur also work?
This brakes my mind and decades of mixandmatching shimano derailleurs... Derailleur total capacity (read cage length) was never a limiting factor for bigger cassettes, but upper pulley offset is. 11sp XT uses GS cage for 1x11-46 and SGS for 2x11-42 - it is needed to make up the slack of front shifter, not to allow for a bigger cassette. If anything, a GS cage of deore 5100 is the right answer for 11-51 cassette.
So if SGS from XT 8000 helps, you should have gotten by just fine with original GRX 812 GS, only being careful with chain length and B-tension. You can also see how much more movement of the cage is left in the smallest sprocket of the final build.
I'm wondering if one could use a GRX 810 derailleur cage on a GRX 812 body. I have an existing 2x drivetrain with an 810 that I'm trying to run an 11-40 cassette on. It works, sort of, but not well.
My 1x11 with grx822 from last movie work now very well. But it needs a shimano chain.
Could this mod be done keeping the 2X with a longer chain?
Been using this mod for 2x11 setup. 36/22 front and 11-46 rear easily. Now that's some range...
From my point of view the chain is just one link to short in the current configuration.
The new cage increases the chainlengh by approximately one link, so what's the point?
Yea ppl keep pointing it out. It’s what I had on hand. An old sram chain. I’ll update with a new 11 speed shimano chain at the right length.
I have a deore xt m786 rd and i want a more modern derailleur cage, is that possible?
Great video! What solution would you recommend? The one with the 12 speed derailleur or this one (with or without a Garbaruk cage)? Thanks!
So is changing from 2x11 grx to 1x11 as simple as changing the chainrings (not the crankset) and the rear deraileur (depending on cogs that will be installed)?
I have the older grx 2x11 (600) and wanted to shift to 1x12 initially which meant I had to sell my 2x11 but if it is this simple then maybe i can go 1x11 instead
The Shimano cassette is actually a Microshift cassette
Haha don’t mind the lock ring… its a deore m5100
Great idea, do you think any hack for 105 r7000 diraler?
Hi, can this work with GRX RX 810 rear deraileur ?
I tried replacing the cage, im not sure what i did wrong my derrailleur body doesnt sit right, it kind of leans on the cage. Any help would be appreciated
Nice, but you need a longer chain and the clutch should be engaged
Thats a simple and affordable way to get there! Nice video.
Is it possible to do the same mod with the di2 version grx817?
its pronounced derailer even the french dont say it the way you do.
Awesome! That's why I LOVE this channel! 😎👍💯
Great to see another episode of this conversion series! Thanks again! :)
I did the same just with the GRX crank and all deore rear d and cassette - now on the micro spline body
will it work with 105 11speed
shifters?
Awesome video! I was considering this mod and your step by step instructions will be very helpful!
Love the experimentation! Thanks!! Probably could use a couple of extra links in the chain and that chain angle on the big cog on back could get interesting, though.
Like previous comments, I put a 11-40 XT cassette on my 2X GRX 810 that was supposed to have a 34 max cog I think. Didn't really like the way the B-screw was sitting (although it was probably fine) so I got a goat link and the screw now sits flush on the tab - and the system works flawlessly. Curious how much larger of a cassette I could actually put back there now!
I'm not in the 1x camp and don't think I ever will be. 2X is much better in my view.
Yes, he can benefit with longer chain.
I'm also in the same setup. Not into 1x as it seems more limiting and I have 11-40 with only unwinding the B-scew.
Yea, this chain was stock length off the GRX 2x (11-32, 31/48) I think. An extra link would probably do it. New chain is already on the way.
I am also in the 2x camp. Tried and 11-42 cassete with the GRX810 (with direct mount goat) and it kind of worked, but shifting was not so nice.
I didn't have a 40 cassete to try out ... currently running an 11-36 with 32/48 out front.
Think is, I also do a bit of road riding on the bike, and the small cogs get used, on the larger cassettes, the 11 to 13 cog gap is very noticeable.
I found out that the SUNRACE 11-36 cassete still has 11-12-13 on the smallest cogs, which is perfect for stretches of road, and then it gets bigger for offroad :)
Just throwing in my experience: running a 11-40 in the rear w/ a GRX815 Di2 derailleur, mounted to a 10-speed goatlink. Front is 46-30 AbsoluteBlack oval chainrings. Everything works great and I've got good range. My fitness is the determining factor before gearing in most instances.
Frisbee singles definitely have the tard look while sacrificing range🤷
I'm using the same 1x11 and 11-51T cassette on my Cube Reaction Hybrid eMTB, but with a 38T chainring. It's a LOT of range. Mine came with a Deore 5100 SGS derailleur. It uses a long-ass chain though. It's over 120 links.
Probably an stereo full suspension.
An reaction has an relatively short chain.
Btw if these parts wear out fast you can swap to cues 11 speed. It does require a derailleur and shifter swap for 2-3x more service life.
@@barneyklingenberg4078 That's exactly what my next upgrade is going to be. I've been watching videos on Cues and they seem perfect for ebikes. Those thicker teeth on the chainring will be very strong. 300% more life apparently. I really should have done it already when my Derailleur got sucked into the wheel lol, but at the time I didn't really have the money, so it's on my list.
That mod it´s not possible on GRX DI2 RD-RX815, the cage hits some of the inside components of the derrailleur and dosn´t shift to the smaller cogs ...
I set up a RX812 with a Garbaruk cage and 11-46 cassette (1x). Works really nice. I’ve got another RX812 from another build that I’m going to set up using your mods. That will be my cheap backup if something bashes that big Garbaruk cage.
Whats the cost to upgrade from
GRX 11 speed to GRX 12 speed , 11-51 from a stock front chain rungs 46/32 where brifters are from 11 speed GRX
And
GRX 12 speed to 11-51 from a stock front chain rings
Whats rhe difference between SRAM chain and Shimano chain?
does the 11-51 really weigh 600 grams???? are there no alternatives to this cassette? but really thank you for this mod.
Also i am not sure if my calculations are correct but is a 1x 40t w/ 11-51 still higher compared to a 2x 46/30 w/ 11-40?
I am currently using a 2x setup (grx600) and was wondering if going 1x is better for my case but even w/ this beefy cassette. I think it is still around the same weight for the groupset compared to 2x w/ less range and the lowest gear is not as low as 2x w/ 11-40.
Is going 1by in the case just for the simplicity?
I recently changed to shorter cranks (on my 2x11 road bike) as I have some hip issues. However this has noticeably reduced my low end gearing (reduced leverage). My solution was to put a 42 cassette on and use a Roadlink DM to allow the Ultegra derailleur to accommodate the big sprocket. This works "okay", but overall the transmission is noisier, notchier and finnickier. I think this GRX 812 solution looks like a better way to go. Or maybe even do the unthinkable and go 1X, as the front derailleur seems to be where a lot of the noise is coming from.
@thebikesauce I have an 11 speed SLX derailleur in my parts bin. I believe it would be the RD-M7000 long cage derailleur. I used it on an older hardtail. Will the cage plates from the RD-M7000 transfer over to the GRX 812 11spd derailleur?
So i have a wolftooth 11 speed tanpan...i know mtb mechs are cross compatible 10-12 with cable pull...and if road is the same is it reasonable to think i could use my 11 speed tanpan for a 12 speed setup? i found a sale with some mechanical r7120 and i have a barely used m9120 and was getting in the mood for some frankenbiking
I noticed the Terravail Sparwood tire on your wheel. What's your take on those? I have a set of 29 x 2.2s from a bike a bought and found them to roll reasonably fast and have good straight-line traction, but lacked traction in flat corners off-road. So good for long distance bike-packing maybe?
I'm planning to convert to 1x11 GRX with this mod, running 38 or 40T up front. Is a 116-link chain sufficient for this or am I better to buy a 126 link and reduce?
I did something similar after crashing and rebuilding my 10-speed Di2 RD with a long cage and Wolf Tooth and 30-11, but couldn't quite get 32-11 to work. (Also, I believe that SRAM chain you have is made for them by KMC... oh and their X11EL is excellent).
Can I run 10-51t 12sp cassette (assuming I have Microspline hub) with the modified 11sp GRX derailleur? I hope to setup this way to be future-proof.
Would this work on GRX 11spd mechanical to go to a 11-46 aswell? Currently on a RX-812 rear deuraillier with 40T / 11-42 cassette.
I've just purchased an M8000 XT rear. Im kind of torn on selling it and going the the M8100 12 speed because of the better shifting. Will I gain much more? My bike is an all round computer bike for all terrain.
Turbo Creo SL Comp E5 11-42t ---> 11-51t change. It has become possible to go uphill without turning on the electricity. haha 😂
is it possible to use a different cage for this hack? Currently Shimano and all vendors across the US are listing the outer plate SGS cage has sold out/out of stock. The amazon link listed in the description is the only one that I can find that has it in stock at double the price. The only option left would be to cannibalize a brand new M8000 XT Derailleur itself which is readily available.
What’s the best GRX 1x11 RD solution to run a SRAM 10-42T cassette? 812? 822? 812 w/XT cage?
Anyone know if this would work with the XTR M9000 SGS cages? The XT cages are pretty tough to find right now.
The dream bikepacking gearing would be to keep the 2x with a wide 51t cassette! 2x mullet? Is there a chain long enough? Any other reason this wouldn’t work?
Using this exact derailleur setup on a 52-36 crank with 11-42 cassette. Works fine, just added 2 links to the standard 11 speed chain
Can you use a 12 speed chain instead of the 2 links? I got a spare chain. Do i have to remove links on the 12 speed chain?
@@jkzv1you should technically be able to use a 12 spd chain although I wouldn't recommend it as the inner width does change
A garbaruk selling website led me here 😂
Also: is it possible to install a 12s cassette and shifter after modifying the derailleur like this?
Are they compatible with 11s crank and chain?
I'd love to see if that works, since it saves one from buying the new derailleur and rest
Just wondering if you know what the pull ratio is on a Shimano 12 speed derailer? Is it the same as the 11 speed?
I don’t know why but for me it doesn’t work. Even with a completely screwed in b screw there is not enough space to even fit in the shimano 11-46t on the highest gear. I will try to combine it with a goat link now
Gracias por el vídeo. Pondré un 11-51 con plato ovalado 38 y cadena nueva. La cadena la mido normalmente con el mono plato y piñón más grande y le sumo dos eslabones. Al tener la pata más larga, tengo que añadir algún eslabón más? Gracias
Which solution would you say works the best in terms of smoothness, quality of shifting, this or the grx 822 12 speed derailleur mod? 😁
I did this same mod last year on an 812 RD to give me more chain wrap capacity on my 2x GRX setup with a mid size cassette. I now have the 46/30 on the front and a 11-42 XT cassette on the back. It works fairly well, but I think you could still use a stock 812 and just avoid the small-small(s) shift locations for an expanded range 2x.
Exactly what I'm trying to accomplish. RD-RX812 (with M8000 cage mod) with an 11-42 M7000 cassette and GRX 46-30T cranks. Can you elaborate on the "fairly well" aspect you experienced?
Have you make that with the rx810 last year?
I used an 812 derailleur because the parallelogram geometry is designed for larger cassettes, I did not try this mod with the 810. I say fairly well because it was quite fiddly to get the b-screw just right. It looks like the XT cassette has more heavily profiled teeth compared to the 11-34 road cassette and I think that contributes to some of the clunking on up shifts. I notice it in the stand, but not on the trail. Or maybe it’s just the bigger jumps between the cogs.
@@dgc-3554 I've been running a 2x 810 with an 11-40 rear using nothing but a Goatlink. TBH I probably didn't even need that but I don't like the idea of the B-screw falling out.
@@dgc-3554so do you recommend ur set up?
I've used this mod to allow me to run a Di2 RX817 with 11-42 and 48-32 Absolute Black Super Compact oval chainrings. Couldn't get enough chain tension with the standard cage on the 32 ring/smallest cog (Di2 doesn't allow you to engage the smallest 2 cogs anyway). But with this extended cage, I can get all gears (minus the 2 smallest) working fine. The RX817 is, in theory, 1x only but I found it works fine, it just doesn't do the semi-shift thing of moving cogs when you shift between big and small chainrings. The front derailleur still auto trims.
I'm going to do the same mode to a second bike I have running 1x RX812.
Many thanks.
Giving this a go now, after the rx822 not so good results…
One thing is for sure 1x with an 11-51 cassete is awesome !!!!
When I installed the single chainring I put it in the INNER position, so the chainline to the biggest cogs is fine.
I tested with a string and it was the best solution in my case. Depending on the frame you might not have clearance for a big chainring there, but in my frame it fits fine up to a 44 or so.
Hi, would be interesting if this also works with a Grx 600 and a Deore Cage
Did the mod had to order the arms from China. That being said, it works very well. I didn't even have to take the derailer off the bike.
Super cool explanation and video, as always! Does anybody know if you can do that with the RD-RX810 as well?
Should this also work with a Shimano GRX ST-RX600 derailleur?
And for the amateur home mechanic: Shimano spec manual is just a funny dummy trolling joke book, don't fully believe it.
Can you do this with the short cage Shimano 105 rear derailleur? The max I can get on it is 11-30t cassette
Does this work with the GRX 820 12 Speed Derailleur?
How many links did you use? Kinda wondering if I have to order 2 chains with this mod. Thanks
If you look up the XT GS and SGS max low sprocket capacity on Shimano's tech docs, they're both rated to the same 46 tooth. The SGS long cage is only advantageous to take up the slack when shifting between chainrings up front. I would wager the GS cage would be a better option for this mod given that it's 1x. Thoughts?
Yea the long cage just barely takes app all the slack in this 11-51t. I'm nearly certain the SG cage wouldn't work here
@@TheBikeSauce that's not my understanding of how it works. The long cage is for taking up the slack in double setups, it has no impact max sprocket size in 1x applications. That's why Shimano lists them both as having 46 tooth max low sprocket for 1x. I could be wrong though!
I looked it up. 39 on the GS and 47 on the SGS. RD-M8000
@@drucyphr That's "Total capacity" you're referencing, which factors in multiple chainrings. The value in question is "low sprocket max" which is the same for the SGS and GS
@@MrJonas2255 The job of the long cage is to take up the slack between the "longest" and "shortest" lengths the chain has to be. ie: for a 1x setup the difference between the 11 and the 51t sprocket, and for 2x setups the difference between big/big and small/small. The required total capacity for this setup (11-51t) is 40. So, just outside the range of the GS. If you had the chain length perfect, maybe it would work, but you'd have almost no chain tension in the 11t (when railing down descents) and you'll beat the crap out of your chainstays. Likewise in the climbing gear drivetrain efficiency may suck with that much tension being put on the chain from the rear cage at such an extreme angle. You are however correct in your understanding that the pulley cage doesn't effect theoretical maximum sprocket size.
Would it work on the 812? I think the m7000 is to short.
Would that not be the same like a garbaruk cage?
Thanks for this mode ! Looks great ! Any return from your previous tests :)
Can this mod be done with a different cage,? the XT 8000 cages seems impossible to get here in Canada
i don't really get this set up quiet. there is a rattling noise i can't eliminate on the second and third largest chainrings. anybody else have this issue?
Great video thanks. where can I find the 2x to 1x conversion video. Interested in the parts used for this
also works with XT SGS 8100 cage?
Thanks for the video, can I use the xt derailleur on a road bike with flat bar?
I'm happy that nosy Google, after finding the short on Instagram, also showed me this video on UA-cam, thanks to which I will make such modifications😂😂
Money! Well done. This is my kind of mod. So much smoother than using the funny derailleur hangers.
Hi, sorry for dubbing the question if asked already. What is the minimum chain links for such a mullet 11/51 by 40 chainring please? Thanks everyone
Depends on the length of the chainstay on the bike.
Will this cage work on the GRX 400?
My RX-812 upgraded to 51t works without any modifications. Maybe with longer cage works better I do not know but no complains as it is. The chain you have is too short.
Yea I’ve got a new one on now. Surprised it clears the 51t, but isn’t the stock cage too short to get through the whole range?
@@TheBikeSauce For off road riding the shorter cage the better (easy to destroy)
Stock cage long enough works well (but derailleur setting is on the end of range)
so no reason to invest more. Nothing is for eternity so in the future when present cassette will be finished maybe 1x12 or 1x13 will be installed.
@@chriskros8858what chainlength did yoy used please? 116 or 118 for your setup without replacinve the cages
@@Nevseremos1 It depends from your bike because distances of back wheel from crankshaft differ a lot.
You must set chain as long as possible but still keep spring tension on the smallest gear. The cage should be ca in horizontal position.
Would this hack work with a R8000 rear derailleur?
Would such a mod also be feasible for 10 speed road derailers?
My old Gravelbike is desperate for better gearing and this looks just like what might help