Brilliant James 👀. Perfect way to eliminate any slop out and fully support the gears at their base. Stable gears are strong gears. Fantastic video Brother 🍻😎💪👊👊
I just made this upgrade/repair today. This is DEFINITELY the problem with these diffs. It’s mind boggling how ARRMA can’t see what’s needed. They send me shims that weren’t even the right fix.
And this can and should be applied to all rc cars,the time taken here is well spent. Few shims saves you the cost of the diff. Excellent overview proves every diff is different.
Very good info and thanks for sharing here! ‘BashingBrian’ from the Arrma Forums also did this a few weeks ago and I followed suit. I’ve put six 6s packs through mine and it has been bulletproof. No probs whatsoever....loving it!!!! However 12x18mm shims (0.3, 0.5 & 1.0mm thick) were used and they completely cover the area behind the sun gears by providing a perfect fit and maximum support.
Awesome I didn't realise someone had done similar. Yes those shims sound good, I managed to do it with what I had in my spares but I'll keep an eye out for them
I did the same and shimmed my v4 diffs . Nice bit of info. Thanks for sharing the informative video on shimming I don’t have a exb but it’s good to know 😎👍 thanks again dude .
I blew my kraton exb diff out and when I got new gears I also got those shims and rebuilt mine the same way you did! Have ran 4 6S packs so far without a problem! Anyone struggling with exb diffs should follow your instructions. Thanks for the pro tips brother!!!!
The pin is 11 mm long. The ridged elevated part that needs reinforcement with the washers is 11.5 mm long. The best washers are 12x16, they come in 1mm and 0.5 as well , mine are on their way. Thanks so much for this video, it's a brilliant solution
Cheers man, yes I have seen a few people use the 12x16, if I was to buy shims for this I would probably do that as well. I had the others spare so used them and they work well
@@Nick-df6po sorry Nick, only saw your reply; I'm in Oz and got these from ALIEXPRESS , one from China, one from hk. I'd be pretty interested to find out if they're still holding up nicely Bournemouth?
When people say knowledge is key they talk about you with diff's lol you are the key of all diff knowledge brother, you are a legend and i will be doin the same to my diff on my exb when i get it in a few weeks, keep up the great videos and keep on bashing 👊👍💪🦶🦶🦶🦶🦶
Cheers man that's awesome of you to say. I love to play about with this sort of stuff and it's just as much fun to do and share the knowledge. I hope you enjoy your EXB man. I'm yet to get one but have tested this in my Krajave rig. Its strong as hell. 😁😁👍👍
@@bournemouthrc4371 good lad im looking forward to seeing the vids, i was just watching driftamaniacs set his car on fire with his 12s lipos lol, i was goin to shim my diffs like u did with the k6 but now u done the exb diff even better love u vids man keep the coming and get urself a exb asap lol
Disappointing news. Second run with stock specs and sun gear on crown side chipped again. It's possible I had some play under the pins on both sides -I did have 2 large and one small washer on each side. Let us know how it holds up for you.
@@bournemouthrc4371 I did, but something must of been different. I plan to try it again when I can get my hands on more parts like a new sun gear, new diff cup, and new shims under pins because I reused my warp ones.
Used your shimming method today with 12x15.5x.2 Arrma shims. I got 8 shims behind the sun gear on the cup side and 7 behind the sun gear on the ring side. Nice and snug with zero play. So far only one pack through it, but we'll see how it holds up!! Fingers crossed! 👍
I just opened my rear diff but I have I think 2 lsd plates installed just behind the gear on the left side. I guess arma fixed it. Great video thx mate.
Very informative video. Question..is this needed on the V4 diff? Or is the V4 diff different from the EXB? Was planning to follow your other videos for shimming my V4 when it comes in.
Hello Bourne, best video on this topic I have seen so far! Bought a Mojave EXB. Is there anything different in particular between your diffs in the video and the Mojave EXB LSD ones? Thank you sir!
Awesome video sir, thanks for this. I have a Kraton 6s RTR but am considering buying a Kraton EXB to experiment with adding my own ESC and motor set up for the first time instead of buying RTR. The diff issues I have seen and heard about have put me off a little bit but this video at least lets me know there is a way to get the thing to be reliable. In my opinion though it should not be up to us, the customer, to get involved in spending money, waiting for parts and then stripping down a brand new model to prevent part failures from normal use of the product from the manufacturer. That said, I saw one other video recently where an owner added a locked spool / block to the rear diff to at least get his EXB running and get some use out of it and although that is not an option I would personally consider I did wonder what your thoughts would be on installing a locked spool to the centre diff of a Kraton or Outcast 6s which most people use 500k diff oil or silicon plugs to practically lock it anyway. Thanks for your time and subscribed for future updates.
Cheers man, yea it's a shame they didnt sort this out in testing but they have now updated and have produced a rear diff that is similar to my design. I personally wouldn't lock any of the diffs on a basher. Its key to have some play, not alot needed but some else the rest of your drive line will be torn to bits
So happy to get this info! I got to be honest though, I have a new EXB (never used). Setting up for 8s. I bought all the shims from the video thinking I would prevent the problem...To my surprise every clearance on my diff feels great. Perfect mesh, no side play. 1 small shim and 1 big shim on sun gear for both sides. Should I just put it back together and run her?
Awesome if yours feels good to you, you might have a good one. It's totally up to you if you do it or not. Just make sure you check after a couple of packs as they tend to loosen up when run in. Enjoy the truck man 😁😁👍👍
You said you like 30k in the rear on the Mojave. Do you think 50k is too heavy? Also could you tell us what k weight you like for the front and center diffs?
James, thanks, was along the same lines as someone else advised me what they did today. Hope this works as mine with the LSD plates didnt work, then again mine when due to the disk plate ripping the back of the sun gear off, on this set up there is nothing to rip the back of the gear off
@@bournemouthrc4371 will be doing it this week as have spared diff parts - bought when Bad Touch got his ones in 😂😂 lets hope it holds up, i dont see why it wont
Mine is on the way. However it looks like they’re doing lsd in the rear now. I wonder if it would be better to get the shim kit and make it open. My only arrma is the v2 outcast.
Nice work. Hope it holds up. Fact remains however that Arma completely dropped the ball on the EXB launch with their rear diff problems. I know of people who are still waiting on their warranty replacement diffs. We shouldn’t have to be playing armchair engineer to fix an obvious design flaw from Arma. Diff problems have plagued their rigs for some time now....going back to early version Outcast’s that needed the diffs to be shimmed out of the box. I was hoping their QC and customer service would’ve improved after Horizon bought them. So much for hoping. You’d think Arma would have it figured out by now. Guess not. But hey...Arma tough baby! Yeah right 🤮
Cheers man, it has held up very well. No issues yet and multiple days out abusing this truck. Yes it is a shame that people have to wait for parts etc. It Is good they have now fixed the issue though, just annoying that people have to wait on parts
Should there be any slight clicking when you spin both shafts on the diff by hand? I’m guessing it should just run smoosh as silk? I rebuilt my diff after replacing the oil (mainly because I heard a click my noise and wanted to check the gears) and once I cleaned and rebuilt it it was making the same ever so slightly click feeling when spinning the diff ends by hand. If this isn’t right do you know what it could be? Any help is appreciated.
Thanks. This makes sense way better than LSD. I am getting Kraton EXB next week but I ordered 12*18*0.2 by mistake. Do you think it will touch the gasket?
Not sure if I have an old manual or not but it shows the front and rear both use the lsd plates, do you know if this is the correct way or should I only be using the plates on the front and big and small shims in the rear?
Super late to the party but i have an issue with this fix. One diff had the pin channel in the sun gear completely sheer off. This fix would only create more of the gap from the pin to the sun gear. Also ive only had lsd diffs and ive gone through 2 with a new one just sitting because i dont trust it. Any ideas?
Great Tips , I will try this out too ! Only problem so far is the 13x19 shims won’t ship to US! I’ll try and find some online tomorrow. Unless anyone knows where to source those , Thanks !
Hi, i finally got to use my EXB today after getting it all set up and following your advise on shimming the rear diff and it worked perfect so thanks for sharing your advice but ive come across a problem with my esc not recognising that ive got two 3's batteries it only beeps three times not six, ive got them connected by using a converter cable going from one to two. I was wondering if you've got any ideas on why its only beeping 3 times and not 6. Thanks paul
Hi buddy it sounds like your connector is a parallel one not a series one. You need a series one to make 2x3s a 6s. Parallel is just 3s with double run time.
Just looked at the cable and it looks like your right, am i right in saying that the in series connecter is the positive cable to positive on one connecter negative cable to negative on another connecter then connect the two connecters together with negative to positive, if it is then the cable i got is wrong as all the positives are together and negatives are together which im assuming is the parallel type
For shimming the pinion, I wasn’t able to find the shims that fit inside and behind the bearing. I left the bearings in place and put a smaller shim on the actual pinion shaft and brought in in closer to the crown wheel. Any reason that method wouldn’t work the same?
great video on that rear diff. can you please tell the part number for the shims i need? i just got a new EXB i want to top off all my diffs and of course check and shim the rear. thanks
@@bournemouthrc4371 I dont looks to hard just ordered them on ebay some Pro Tek brand 13 16 0.2mm hopefully i have those other ones behind the pin. Not gonna run my EXB until i do this. Great video mate. keep up the great work. be safe.
Hi the 0.2 shims you used behind the pinion bearing towards the end of the video are they the same size 13 x 16 x 0.2mm ones you used behind the sun gear in the differential?
No I believe they are 13x19 check in the description but it's important they fit the outside of the bearing which I believe is 19mm. The sizes are in the description of the video
Did this yesterday I too had two large and one small shim behind the pin. When putting back together I put the shims behind the pin back in the order they came out 2x large first then the small shim next to the pin. I noticed after watching your video again you put them back in large, small, large. Is it going to make much of a difference the way I did it?
OK thanks so much for your help, looking forward to putting the first pack through it this evening. 👍 I think I know how the incorrect shimming from the factory came about. If you look at the diagram in the manual for the rear differential it has the shims all mixed up. It shows the small shims but the part number is for the larger shim dimensions and vise versa. Just subscribed.
So Arrma have brought out yet another version with major problems straight away - great video - u solved my diff problem on my v4 with your othet shimming vid ! Thanks bud it was annoying te hell out of me hearing that grinding. Can i pick your brain ? I would (as im sure many kraton owners would) like to know just how much of the new EXB parts will go onto a Normal v4 6s Kraton. I see the gp4 crown n pinion fit but what about all the safe d stuff and bulkhead size etc? Modelshops show non compatible but to me it looks like it will fit. Can u help pls mate ? I basically want EXB drivetrain in my v4
Cheers man, I'm glad there helping. Right I dont have an exb, just the diff but here is what I know. The diffs and pinion will go into the old housing fine. But I think you need complete diffs as the diff cups are smaller and the V4 wont fit onto the crown gear. (Someone please correct me if I'm wrong). The chassis is a straight swap, arms are slightly different but should swap. Towers are different (rear more like mojave I believe) but again will swap. If I'm honest and you upgrading your V4 the front and rear diff and pinion is all that I would use EXB for the rest I would stick to M2C etc as they are stronger than the exb one already. I hope that answers your question
@@bournemouthrc4371Thanks bro - yeah i know u got v4 Kraton too hence i thought id ask if you knew lol ive M2c towers n hingepin holders etc , rpm all round etc - i thought the same in regards to the spur n pinion but wanted your expert advice too. Im thinking i wont nred exb sun n planetary gears ? So to clarify , Just exb crown n pinion on both ? Will shim them too .
Lol sorry read that walking along lol ok so im gonna give the whole diff itself a whirl n see it fits - i will let you know how i got on dude - keep up the great vids - they REALLY helped me and im not new to this truck lol u da man
@@rccircus7271 I'm not 100% sure but I believe you have to put the whole exb diff in as the crown gear has different whole locations for the smaller diffs. Annoyingly I didnt check them when I had mine out. I'm pretty sure you have to use the whole exb or the whole V4 diff. Best net is to get complete diffs from a breaker
HI what kind of diff fluid are you using now when you shim it. you said 30k on your can i use 10k ? or i should use 30k? its not gonna effect the diff to much is it? making more bullet proof or less ? i would assume 50k is too heavy ?
Hello, you can use what ever diff fluid you want, the change is in the handling of the truck. For example thicker in the rear gives slightly more power out of corners but can slide about more
I measured My LSD plates at .6 each 1.8mm total which makes sense as you stacked the under pin shims large small large so the edge of the top large one isn't supported and with a 13mm bore the shims emulating the LSD plates are sitting it large arma shim has a 13.7 OD.
Yes you are right they do over lap slightly, that's also why I went large small large with the lower shims to act as a sort of sprung loaded pressure plate when squished in
Nope no shims were needed on the spider gears, they actually line up nicely with the edge of the sun gear. I don't think you would need any extra in there from what I have seen
Is this still an issue for arrma? Considering an exb but afraid to buy garbage. I've only had a maxxv2 so far and haven't had to do anything really at all to it
@@bournemouthrc4371 i can find it at all. I spent an hour online. It would work if it just was the smaller size as long as it only touches the inside ring of bearing it should work right. Obviously touching the outside ring of bearing is better but im wondering if i should just give it a try to see if it still spins freely
Yes you can there exactly the same parts apart from the lsd plates, the Lsd plates take up the same amount of room so you don't need to for strength but if you prefer none lsd you can take them out and do the same as I did
Bad news....my diff failed with this repair! Took about 10 packs of hard bashing and I thought it was licked. Not so much. Can we all just get replacement diffs!
@@bournemouthrc4371 sun gears. They didn’t actually break 100%. I put it all back together using the LSD plates (bought 3 sets) it’s running again until ARRMA sends a replacement. I don’t think it will hold up for long though.
And this can and should be applied to all rc cars,the time taken here is well spent. Few shims saves you the cost of the diff. Excellent overview proves every diff is different.
Just brilliant, thanks! Im going to apply what I can to my non-EXB diffs. The input gear shimming was especially helpful. Thanks again.
Cheers man. There are some V4 diff shimming videos on my channel as well. I'm glad they helped 😁😁
Brilliant James 👀. Perfect way to eliminate any slop out and fully support the gears at their base. Stable gears are strong gears. Fantastic video Brother 🍻😎💪👊👊
Cheers Brother, awesome feedback from the king of Arrma bashing. Cheers man 😁😁👍👍
I just made this upgrade/repair today. This is DEFINITELY the problem with these diffs. It’s mind boggling how ARRMA can’t see what’s needed. They send me shims that weren’t even the right fix.
@@GRIFFINLEVEL3 I'm glad it helped man, I hope they sort it soon and come up with a new design 😁😁👍👍
And this can and should be applied to all rc cars,the time taken here is well spent. Few shims saves you the cost of the diff. Excellent overview proves every diff is different.
That is informative mate. 🙏🏻. This is what we need. Good explanation and good repair. Thanks a lot 👍🏻
Cheers man, yea it's a nice easy solution to the problem. I hope it helps
Best video out there on this topic. Thanks for doing this.
Cheers man, awesome feedback. I'm glad it helped 😁😁👍👍
Very good info and thanks for sharing here! ‘BashingBrian’ from the Arrma Forums also did this a few weeks ago and I followed suit. I’ve put six 6s packs through mine and it has been bulletproof. No probs whatsoever....loving it!!!! However 12x18mm shims (0.3, 0.5 & 1.0mm thick) were used and they completely cover the area behind the sun gears by providing a perfect fit and maximum support.
Awesome I didn't realise someone had done similar. Yes those shims sound good, I managed to do it with what I had in my spares but I'll keep an eye out for them
I did the same and shimmed my v4 diffs . Nice bit of info. Thanks for sharing the informative video on shimming
I don’t have a exb but it’s good to know 😎👍 thanks again dude .
Cheers man
Great video mate. I did almost the same fix to mine before running it. It's now had 8 6s batteries through it with no problems at all
Awesome man sounds like its holding up well for you too. 😁😁
Great video, I never thought to put a shim behind the bearing on the input gear, time to start wrenching👍🏻👌 thanks man👍🏻
I blew my kraton exb diff out and when I got new gears I also got those shims and rebuilt mine the same way you did! Have ran 4 6S packs so far without a problem! Anyone struggling with exb diffs should follow your instructions. Thanks for the pro tips brother!!!!
Cheers man, mines still in there going strong months later and multiple 6&8s packs through it 💪💪😀😀
The pin is 11 mm long. The ridged elevated part that needs reinforcement with the washers is 11.5 mm long. The best washers are 12x16, they come in 1mm and 0.5 as well , mine are on their way.
Thanks so much for this video, it's a brilliant solution
Cheers man, yes I have seen a few people use the 12x16, if I was to buy shims for this I would probably do that as well. I had the others spare so used them and they work well
Where did you get the 12x16 shims?
@@Nick-df6po sorry Nick, only saw your reply; I'm in Oz and got these from ALIEXPRESS , one from China, one from hk. I'd be pretty interested to find out if they're still holding up nicely Bournemouth?
Awesome content! Thanks for the help bullet proofing :)
Excellent just the info I needed. Top work. 👍
Cheers man, I'm glad it helped 😁😁
Great info man I’m going to give this a try on the one I have currently see if I can get mine back running.
Awesome man, hopefully you can get it up and running again. Shame to see them sat about waiting on parts
Good video, just ordered the 13x19’s & 16’s to take up some play.
Brilliant idea. Im going to do this on mine. I never would've thought of this but make sense because you can only add so much behind that pin.
Cheers man, yes as soon as it clicked in my head I thought the same.
@@bournemouthrc4371 do you know the size of the small shims by chance? I know arrma is sold out and there weird sizes
@@joshherrman3201 hi buddy the sizes are in the description of the video, sorry I cant remember of the top of my head
@@bournemouthrc4371 its ok i can't find the 13x19mm one to save my life. If I can there all back orderes
@@joshherrman3201 ahh man that sucks can you get close keep the 19mm the same but maybe 14x19
Great info, thanks James - Shims ordered 👍🏽
Awesome man, 😁😁
Bournemouth RC we’ll
See if I can fuck this up 😂
Thanks alot ..just picked one up to run 8s much needed to know info ....thanks for sharing... will subscribe...
Cheers man and cheers for the support, I hope you enjoy your truck 😁😁👍👍💪💪
This Vid was a great help. Thanks
Cheers man, I'm glad it helped
You're my hero, thanks.
Cheers man, I'm glad it helped 😁😁👍👍
When people say knowledge is key they talk about you with diff's lol you are the key of all diff knowledge brother, you are a legend and i will be doin the same to my diff on my exb when i get it in a few weeks, keep up the great videos and keep on bashing 👊👍💪🦶🦶🦶🦶🦶
Cheers man that's awesome of you to say. I love to play about with this sort of stuff and it's just as much fun to do and share the knowledge. I hope you enjoy your EXB man. I'm yet to get one but have tested this in my Krajave rig. Its strong as hell. 😁😁👍👍
@@bournemouthrc4371 good lad im looking forward to seeing the vids, i was just watching driftamaniacs set his car on fire with his 12s lipos lol, i was goin to shim my diffs like u did with the k6 but now u done the exb diff even better love u vids man keep the coming and get urself a exb asap lol
Cheers man yea I am hoping I can get some new rigs soon
Shared on a few FB groups - this needs to be shared 😂👍 will also link from my video with my diff going bye bye 👍
Cheers man, yea any help sharing is appreciated. It's been tested hard now and is ready to take the abuse 😁😁
@@bournemouthrc4371 Share and linked / pinned on my channel
Awesome man, thanks for the support 👍👍
@@bournemouthrc4371 welcome 👍👍
Brilliant! If this doesn't work I don't know what will! Thank you!
Cheers man, I hope it helps 😁😁👍👍
Disappointing news. Second run with stock specs and sun gear on crown side chipped again. It's possible I had some play under the pins on both sides -I did have 2 large and one small washer on each side. Let us know how it holds up for you.
@@Nick-df6po ahh man that sucks, I've done about 13 packs through it now and all is good. Did you shim it how I did in this video?
@@bournemouthrc4371 I did, but something must of been different. I plan to try it again when I can get my hands on more parts like a new sun gear, new diff cup, and new shims under pins because I reused my warp ones.
@@Nick-df6po ahh okay maybe it was the used parts had worn slightly. I hope you get it sorted soon buddy
Cool video buddy this is really helpful 💙hope your all well
Cheers, hopefully it will help the people out there struggling with theirs
@@bournemouthrc4371 no problem
Used your shimming method today with 12x15.5x.2 Arrma shims. I got 8 shims behind the sun gear on the cup side and 7 behind the sun gear on the ring side. Nice and snug with zero play. So far only one pack through it, but we'll see how it holds up!! Fingers crossed! 👍
Awesome man, glad it helped. I have run at least 20 packs through mine and so far no problems 😁😁👍👍
@@bournemouthrc4371 Awesome to hear!!
super helpful.
I just opened my rear diff but I have I think 2 lsd plates installed just behind the gear on the left side. I guess arma fixed it. Great video thx mate.
Yea the second batch they put the lsd plates in, hopefully yours will be fine 😁😁👍👍
Nice vid bro
Cheers man
Very informative video. Question..is this needed on the V4 diff? Or is the V4 diff different from the EXB? Was planning to follow your other videos for shimming my V4 when it comes in.
Hello Bourne, best video on this topic I have seen so far! Bought a Mojave EXB. Is there anything different in particular between your diffs in the video and the Mojave EXB LSD ones? Thank you sir!
For anyone wondering, I used Arrma 12x15.5x.2mm shims. Arrma part number is AR709052. 👍
Awesome cheers for sharing man 😁😁👍👍
@@bournemouthrc4371 Anytime sir!!
Awesome video sir, thanks for this. I have a Kraton 6s RTR but am considering buying a Kraton EXB to experiment with adding my own ESC and motor set up for the first time instead of buying RTR. The diff issues I have seen and heard about have put me off a little bit but this video at least lets me know there is a way to get the thing to be reliable. In my opinion though it should not be up to us, the customer, to get involved in spending money, waiting for parts and then stripping down a brand new model to prevent part failures from normal use of the product from the manufacturer.
That said, I saw one other video recently where an owner added a locked spool / block to the rear diff to at least get his EXB running and get some use out of it and although that is not an option I would personally consider I did wonder what your thoughts would be on installing a locked spool to the centre diff of a Kraton or Outcast 6s which most people use 500k diff oil or silicon plugs to practically lock it anyway.
Thanks for your time and subscribed for future updates.
Cheers man, yea it's a shame they didnt sort this out in testing but they have now updated and have produced a rear diff that is similar to my design.
I personally wouldn't lock any of the diffs on a basher. Its key to have some play, not alot needed but some else the rest of your drive line will be torn to bits
So happy to get this info! I got to be honest though, I have a new EXB (never used). Setting up for 8s. I bought all the shims from the video thinking I would prevent the problem...To my surprise every clearance on my diff feels great. Perfect mesh, no side play. 1 small shim and 1 big shim on sun gear for both sides. Should I just put it back together and run her?
Awesome if yours feels good to you, you might have a good one. It's totally up to you if you do it or not. Just make sure you check after a couple of packs as they tend to loosen up when run in. Enjoy the truck man 😁😁👍👍
You said you like 30k in the rear on the Mojave. Do you think 50k is too heavy? Also could you tell us what k weight you like for the front and center diffs?
@@surfside75 hello, 50k would work but is a little stiff so the rear end will slide about a little more. I use 60k front and 500k centre
@@bournemouthrc4371 thank you for that quick reply 👍 more research leads me to rear 30k 200k 50k. Good?
James, thanks, was along the same lines as someone else advised me what they did today. Hope this works as mine with the LSD plates didnt work, then again mine when due to the disk plate ripping the back of the sun gear off, on this set up there is nothing to rip the back of the gear off
Yea this keeps it simple nothing to break up or wear out just a nice tight diff with no play 😁😁
@@bournemouthrc4371 will be doing it this week as have spared diff parts - bought when Bad Touch got his ones in 😂😂 lets hope it holds up, i dont see why it wont
@@HardcoreRC yea man mins held up extremely well on both 6 and 8s you should be fine
@@bournemouthrc4371 parts ordered - didnt quite have enough of the shims already 👍👍
This is exactly how arrma has fixed the problem. Now the shim kit includes a spacer where you are stacking the eight shims.
Yea I sent this over to them when I did it, seems they liked the idea 😁😁👍👍
Mine is on the way. However it looks like they’re doing lsd in the rear now. I wonder if it would be better to get the shim kit and make it open. My only arrma is the v2 outcast.
@@NavigatorGSX1300BK the LSD works well as well as that takes uo the same space
Great video, what diff oil would you recommend to put in the 3 diffs ?,
Just running it on a field with 6S, no mad jumps like Kevin Talbot.
I personally run 60k front 500k centre and 30k rear. But anywhere between 200-500k for centre would work
@@bournemouthrc4371 Thanks for getting back to me so soon, much appreciated.
Nice work. Hope it holds up. Fact remains however that Arma completely dropped the ball on the EXB launch with their rear diff problems. I know of people who are still waiting on their warranty replacement diffs. We shouldn’t have to be playing armchair engineer to fix an obvious design flaw from Arma. Diff problems have plagued their rigs for some time now....going back to early version Outcast’s that needed the diffs to be shimmed out of the box. I was hoping their QC and customer service would’ve improved after Horizon bought them. So much for hoping. You’d think Arma would have it figured out by now. Guess not. But hey...Arma tough baby! Yeah right 🤮
Cheers man, it has held up very well. No issues yet and multiple days out abusing this truck. Yes it is a shame that people have to wait for parts etc. It Is good they have now fixed the issue though, just annoying that people have to wait on parts
Can you remake the video with the Arrma thick shims in the 29mm open diff conversion set?
Thanks.
Should there be any slight clicking when you spin both shafts on the diff by hand? I’m guessing it should just run smoosh as silk?
I rebuilt my diff after replacing the oil (mainly because I heard a click my noise and wanted to check the gears) and once I cleaned and rebuilt it it was making the same ever so slightly click feeling when spinning the diff ends by hand. If this isn’t right do you know what it could be? Any help is appreciated.
Thanks. This makes sense way better than LSD. I am getting Kraton EXB next week but I ordered 12*18*0.2 by mistake. Do you think it will touch the gasket?
Its bling to be close, I think it might be a little big
@@bournemouthrc4371 I better be ordering the correct one then. Really informative. Thanks again :)
@@jinhyuckpark1074 cheers man, I hope it sorts it for you
Would putting the lsd plates in there help as well? Why do people like to run open rear diffs on the kraton? I have one on order.
Not sure if I have an old manual or not but it shows the front and rear both use the lsd plates, do you know if this is the correct way or should I only be using the plates on the front and big and small shims in the rear?
Super late to the party but i have an issue with this fix. One diff had the pin channel in the sun gear completely sheer off. This fix would only create more of the gap from the pin to the sun gear. Also ive only had lsd diffs and ive gone through 2 with a new one just sitting because i dont trust it. Any ideas?
Great Tips , I will try this out too ! Only problem so far is the 13x19 shims won’t ship to US! I’ll try and find some online tomorrow. Unless anyone knows where to source those , Thanks !
Cheers man, hopefully you can find somewhere that does them in the US. I'm sure someone supplies them.
Hi, i finally got to use my EXB today after getting it all set up and following your advise on shimming the rear diff and it worked perfect so thanks for sharing your advice but ive come across a problem with my esc not recognising that ive got two 3's batteries it only beeps three times not six, ive got them connected by using a converter cable going from one to two. I was wondering if you've got any ideas on why its only beeping 3 times and not 6. Thanks paul
Hi buddy it sounds like your connector is a parallel one not a series one. You need a series one to make 2x3s a 6s. Parallel is just 3s with double run time.
Just looked at the cable and it looks like your right, am i right in saying that the in series connecter is the positive cable to positive on one connecter negative cable to negative on another connecter then connect the two connecters together with negative to positive, if it is then the cable i got is wrong as all the positives are together and negatives are together which im assuming is the parallel type
@@paulbrett9964 yea man you have the parallel one you need the other one 😁😁👍👍
@@paulbrett9964 it looks like a y shape
Perfect, i will order one right now. Thanks for the help. 👍👍👍
For shimming the pinion, I wasn’t able to find the shims that fit inside and behind the bearing. I left the bearings in place and put a smaller shim on the actual pinion shaft and brought in in closer to the crown wheel. Any reason that method wouldn’t work the same?
It should work, I have discussed this before I think a few did it but one person found the pinion chewed the shim up do just keep an eye on it
great video on that rear diff. can you please tell the part number for the shims i need? i just got a new EXB i want to top off all my diffs and of course check and shim the rear. thanks
Cheers man, all the shims and links to them are in the description below the video.
@@bournemouthrc4371 I dont looks to hard just ordered them on ebay some Pro Tek brand 13 16 0.2mm hopefully i have those other ones behind the pin. Not gonna run my EXB until i do this. Great video mate. keep up the great work. be safe.
Cheers man, I'm glad they helped. I hope you get out there soon and enjoy your truck man 😁😁👍👍💪💪
@@bournemouthrc4371 thanks I will 👊
Hi the 0.2 shims you used behind the pinion bearing towards the end of the video are they the same size 13 x 16 x 0.2mm ones you used behind the sun gear in the differential?
No I believe they are 13x19 check in the description but it's important they fit the outside of the bearing which I believe is 19mm. The sizes are in the description of the video
@@bournemouthrc4371 OK thanks 👍
Did this yesterday I too had two large and one small shim behind the pin. When putting back together I put the shims behind the pin back in the order they came out 2x large first then the small shim next to the pin. I noticed after watching your video again you put them back in large, small, large. Is it going to make much of a difference the way I did it?
@@benlait3696 no it should be fine, it's the same amount of shims so it equals the same thickness
OK thanks so much for your help, looking forward to putting the first pack through it this evening. 👍 I think I know how the incorrect shimming from the factory came about. If you look at the diagram in the manual for the rear differential it has the shims all mixed up. It shows the small shims but the part number is for the larger shim dimensions and vise versa. Just subscribed.
So Arrma have brought out yet another version with major problems straight away - great video - u solved my diff problem on my v4 with your othet shimming vid ! Thanks bud it was annoying te hell out of me hearing that grinding. Can i pick your brain ? I would (as im sure many kraton owners would) like to know just how much of the new EXB parts will go onto a Normal v4 6s Kraton. I see the gp4 crown n pinion fit but what about all the safe d stuff and bulkhead size etc? Modelshops show non compatible but to me it looks like it will fit. Can u help pls mate ? I basically want EXB drivetrain in my v4
Cheers man, I'm glad there helping.
Right I dont have an exb, just the diff but here is what I know.
The diffs and pinion will go into the old housing fine. But I think you need complete diffs as the diff cups are smaller and the V4 wont fit onto the crown gear. (Someone please correct me if I'm wrong).
The chassis is a straight swap, arms are slightly different but should swap. Towers are different (rear more like mojave I believe) but again will swap. If I'm honest and you upgrading your V4 the front and rear diff and pinion is all that I would use EXB for the rest I would stick to M2C etc as they are stronger than the exb one already.
I hope that answers your question
@@bournemouthrc4371Thanks bro - yeah i know u got v4 Kraton too hence i thought id ask if you knew lol ive M2c towers n hingepin holders etc , rpm all round etc - i thought the same in regards to the spur n pinion but wanted your expert advice too. Im thinking i wont nred exb sun n planetary gears ? So to clarify , Just exb crown n pinion on both ? Will shim them too .
Lol sorry read that walking along lol ok so im gonna give the whole diff itself a whirl n see it fits - i will let you know how i got on dude - keep up the great vids - they REALLY helped me and im not new to this truck lol u da man
@@rccircus7271 I'm not 100% sure but I believe you have to put the whole exb diff in as the crown gear has different whole locations for the smaller diffs. Annoyingly I didnt check them when I had mine out. I'm pretty sure you have to use the whole exb or the whole V4 diff. Best net is to get complete diffs from a breaker
HI what kind of diff fluid are you using now when you shim it. you said 30k on your can i use 10k ? or i should use 30k? its not gonna effect the diff to much is it? making more bullet proof or less ? i would assume 50k is too heavy ?
Hello, you can use what ever diff fluid you want, the change is in the handling of the truck. For example thicker in the rear gives slightly more power out of corners but can slide about more
@@bournemouthrc4371 ok great thank you buddy. 👍 Be safe
I measured My LSD plates at .6 each 1.8mm total which makes sense as you stacked the under pin shims large small large so the edge of the top large one isn't supported and with a 13mm bore the shims emulating the LSD plates are sitting it large arma shim has a 13.7 OD.
Yes you are right they do over lap slightly, that's also why I went large small large with the lower shims to act as a sort of sprung loaded pressure plate when squished in
@@bournemouthrc4371 I would expect the outer lip to get bent over time I can't see it springing back keep us all informed.
what do you think about running the aluminum diff cases
I dont the alloy ones would fit as the exb are smaller
Great work and tell how for dummys like me
Cheers man, hopefully it helps you out 😁😁
I didn’t get any shims in my box but none of my diffs have any play and all diff gears as full with oil did I get lucky
This states rear diff... would you not treat the front the same?
So the spider gears don't need any shims? looks like you skipped over that part.
Nope no shims were needed on the spider gears, they actually line up nicely with the edge of the sun gear. I don't think you would need any extra in there from what I have seen
@@bournemouthrc4371 Thanks for the fast reply..
@@bournemouthrc4371 do you do this to all of the defs in the truck or just the rear?
@@MrCrazybill420 I only did the rear as that's what I was sent by Badtouch Breakers. I then ran the diff in my Krajave (mojave chassis Kraton)
Is this still an issue for arrma? Considering an exb but afraid to buy garbage. I've only had a maxxv2 so far and haven't had to do anything really at all to it
Any recommended U.S stores for the shims you linked? Thank you!
Sorry the best bet would be Ebay that's where I tend to get mine, just type in the size
I used Arrma shims, 12x15.5x.2. So far so good! 👍
Ijust priced it out shipping from uk site to usa the shims for 25 qty is 3.50 and shipping is $38 haha and im still considering it.
@@focusdrivenmedia3436 ahh man that sucks, I cant believe somewhere in the states they dont do these
@@bournemouthrc4371 i can find it at all. I spent an hour online. It would work if it just was the smaller size as long as it only touches the inside ring of bearing it should work right. Obviously touching the outside ring of bearing is better but im wondering if i should just give it a try to see if it still spins freely
Can you shim a diff that has LSD plates by removing the plates and following your steps?
Yes you can there exactly the same parts apart from the lsd plates, the Lsd plates take up the same amount of room so you don't need to for strength but if you prefer none lsd you can take them out and do the same as I did
So it has been 5 months since doing the shimming. How is the diffs holding up? Any failures?
Nope no failures and its used most weekends. Still strong as hell
@@bournemouthrc4371 did you end up doing the same shimming to the front diff also
Yes I ended up doing the same to the front both have been no issues since
@@bournemouthrc4371 Sweet thank you for the awesome videos and fast responses. Stay safe
I Don't know if I want an exb now I am not very good with diffs do you reckon they will fix it in the v2
Yea they were fixed but the second batch of the v1 so any you buy now will be fine
@@bournemouthrc4371 thank god
Can these diffs handle 8s?
Did arrma fix the rear diff in the exb?
Yes I believe the v2 comes with the LSD diffs all the way around to sort the issues
@@bournemouthrc4371 is that a good thing ?
@@bournemouthrc4371 When will the Kraton EXB V2 be released?
@@larsoost3901 sorry not V2 I meant batch 2 of the EXB. The second batch has the diff sorted i believe
Bad news....my diff failed with this repair! Took about 10 packs of hard bashing and I thought it was licked.
Not so much. Can we all just get replacement diffs!
Ahh man that's not good mine had about 30 odd packs throughout now. Which part broke?
@@bournemouthrc4371 sun gears. They didn’t actually break 100%. I put it all back together using the LSD plates (bought 3 sets) it’s running again until ARRMA sends a replacement. I don’t think it will hold up for long though.
@@GRIFFINLEVEL3 are man that isnt good, I hope you get your new ones soon and your one holds up until then
Why us everyone skipping getting the last gear out, it's always edited out and I'm struggling with it
Could you just fit a v4 diff they seem stronger
I think these shimmed up properly are stronger due to having larger gears for input and crown wheel.
But yes you can put a V4 one in there with the pinion and drive cup from a V4 as well
Open lsd:( noooooo
Buy a Traxxas.
Remove the shit electrics, sell them.
Buy hobbywing esc castle motor and banggood special servos.
Best rc car ever
I will have to stop you on best car and say best car for you
And this can and should be applied to all rc cars,the time taken here is well spent. Few shims saves you the cost of the diff. Excellent overview proves every diff is different.
Cheers man, yea this makes all the difference in how long the cars last. Cheers for all all the support 😁😁👍👍