Revorocks Posted February 5, 2012 Share Posted February 5, 2012 But Revo, surely if there is some remains on the teeth it would spin fine, it would only crunch/slip when there is some sort of drag created? Not likely, with missing teeth it won't be smooth, they tend to get jammed up in the gears. Quote Link to comment Share on other sites More sharing options...
RooBoonix Posted February 5, 2012 Share Posted February 5, 2012 True... im sure he will find the problem! Quote Link to comment Share on other sites More sharing options...
prawnball Posted February 5, 2012 Share Posted February 5, 2012 ting if you go on ebay usa you can get a full diff for about $25 thats where i got mine from as a spare for my e revo mate ive not even seen the inside of my diffs yet but one day its going to have to happend then i will look at your info on how to do it Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 5, 2012 Author Share Posted February 5, 2012 (edited) thanks guys, and yes im about to remove the centre cvd and see if i have free movement in the diffs, also RR with a 36t spur running 6s on my setup what pinion would you suggest for top speeds? also i remember you saying my motor will be well over geared, what is the lowest gear setup i can go for top speed? also if i were to get a 2nd back up motor, what would you suggest for running 6s that would be faster than my current 2200kv? pref an xerun of somesort? and last one what would be the max ish speed with out overgearing my castle 2200kv? just getting prepared as im going to be a complete rebuild soon with new everything and a back up motor and esc as i am aiming for 90mph + but i dont think the castle 2200kv will be up to that will it? i also think im going with the gps for my speed runs as i can take speed runs by myself edit, thanks mate ive found a complete diff on ebay for Edited February 5, 2012 by Tingting44 Quote Link to comment Share on other sites More sharing options...
prawnball Posted February 5, 2012 Share Posted February 5, 2012 go on you tube mate theres a few speed runs on there .the last one i saw he zipped tied the rocker arms down and ran with mod 1 gearing and no wing on it but he still had the 2200 motor and esc in it running 6s and wrapped fishing line round the tread of the wheels you got mate Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 5, 2012 Author Share Posted February 5, 2012 thanks PB will be looking up loads of youtube stuff soon well i just removed the centre cvd on the bottom of my revo, (the side connecting the tranny to the rear diff, as i was unscrewing the centre cvd i noticed it felt well wobbly! when i pulled it off a little shim came out also, must be from the rear diff, and now i can see loadssss of little ball bearings all around where the centre cvd connects to the diff via the bearing, now im not sure if the little shim thing is a shim from the diff or actually the bearing as i cant see no bearing at all lmao, oh boy this is going to be fun Quote Link to comment Share on other sites More sharing options...
Stock_Nitro Posted February 5, 2012 Share Posted February 5, 2012 (edited) If you can hold one wheel and turn the other on the back end; it won't be the internal planetary gears inside the rear diff that are broken. And if you're getting no problems on the front then I'd doubt it would be the gearbox I'm almost 100% sure that it's either the rear pinion gear or the ring gear on the outside of the rear diff. EDIT: ahh, sounds like one of the bearings has exploaded then. Here's the exploaded (excuse the pun) diagram: http://traxxas.com/s...ar_091222_0.pdf Edited February 5, 2012 by Stock_Nitro 1 Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 5, 2012 Share Posted February 5, 2012 thanks PB will be looking up loads of youtube stuff soon well i just removed the centre cvd on the bottom of my revo, (the side connecting the tranny to the rear diff, as i was unscrewing the centre cvd i noticed it felt well wobbly! when i pulled it off a little shim came out also, must be from the rear diff, and now i can see loadssss of little ball bearings all around where the centre cvd connects to the diff via the bearing, now im not sure if the little shim thing is a shim from the diff or actually the bearing as i cant see no bearing at all lmao, oh boy this is going to be fun That little 'shim' is just a seal on one of the bearings. Unless the balls are falling out the bearing should be fine and you can push the seal back in. Get some pictures buddy. Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 5, 2012 Share Posted February 5, 2012 thanks guys, and yes im about to remove the centre cvd and see if i have free movement in the diffs, also RR with a 36t spur running 6s on my setup what pinion would you suggest for top speeds? also i remember you saying my motor will be well over geared, what is the lowest gear setup i can go for top speed? also if i were to get a 2nd back up motor, what would you suggest for running 6s that would be faster than my current 2200kv? pref an xerun of somesort? and last one what would be the max ish speed with out overgearing my castle 2200kv? just getting prepared as im going to be a complete rebuild soon with new everything and a back up motor and esc as i am aiming for 90mph + but i dont think the castle 2200kv will be up to that will it? i also think im going with the gps for my speed runs as i can take speed runs by myself edit, thanks mate ive found a complete diff on ebay for 1 Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 5, 2012 Author Share Posted February 5, 2012 (edited) thanks guys, not going to know the complete damage till i get the diff out, but here is a few pics of how it is at present, i was trying to get a clear pic of the bearings but this is the best one igot, will get more detailed pics tomoz when i take it apart fully Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us EDIT< thanks for the motor/gearing info RR Edited February 5, 2012 by Tingting44 Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 5, 2012 Share Posted February 5, 2012 Ah that's just the bearing seal. Bearings look pretty manky anyway so it might be worth replacing them, measure them and get some replacements from RCBearings.co.uk. Only a quid each Anyway, check to see if they are smooth first, if they are then just wipe em down and put the seal back in if you don't want to replace them yet Interesting to think where all that black gunk has come from though, I think your diffs may be leaking, it's not uncommon in the Revo diffs unfortunately. Quote Link to comment Share on other sites More sharing options...
Stock_Nitro Posted February 5, 2012 Share Posted February 5, 2012 (edited) 6x12 bearings I imagine the gunk that's come through is from the grease he's using on the diff ring gear rather than the diff oil Edited February 5, 2012 by Stock_Nitro Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 5, 2012 Author Share Posted February 5, 2012 (edited) Ah that's just the bearing seal. Bearings look pretty manky anyway so it might be worth replacing them, measure them and get some replacements from RCBearings.co.uk. Only a quid each Anyway, check to see if they are smooth first, if they are then just wipe em down and put the seal back in if you don't want to replace them yet Interesting to think where all that black gunk has come from though, I think your diffs may be leaking, it's not uncommon in the Revo diffs unfortunately. thanks rr i allways get my bearings from that shop there great and i replace my bearings every month, not sure why it popped was only running 4s? yes probablly a failed blue o ring is where the gunk is coming from lol and i think the bearing is unsaveable as u can see the balls all over the show in pic 2 lol, i got brand new spare bearings so will pop that in, but if thats the only damage i have taken, im lucky edit, thanks stock! will know for sure tomooz if its grease or oil Edited February 5, 2012 by Tingting44 Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 5, 2012 Author Share Posted February 5, 2012 go on you tube mate theres a few speed runs on there .the last one i saw he zipped tied the rocker arms down and ran with mod 1 gearing and no wing on it but he still had the 2200 motor and esc in it running 6s and wrapped fishing line round the tread of the wheels you got mate just re-reading posts as i skim a lot! what do you mean by mod1 gearing my friend? Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 5, 2012 Share Posted February 5, 2012 just re-reading posts as i skim a lot! what do you mean by mod1 gearing my friend? It's the pitch of the gears, they are 32dp on the revo which is mod 0.5 I think. Mod 1 gears are a bit tougher so are suitable for high power setups. Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 6, 2012 Author Share Posted February 6, 2012 (edited) nice so i might go with a 36t mod 1 spur then, i also see that msuk sell mod 1 pinions, would i need a mod 1 pinion also? cant seem to find mod 1 spur's on msuk tho Edited February 6, 2012 by Tingting44 Quote Link to comment Share on other sites More sharing options...
suicideneil Posted February 6, 2012 Share Posted February 6, 2012 (edited) It's the pitch of the gears, they are 32dp on the revo which is mod 0.5 I think. Mod 1 gears are a bit tougher so are suitable for high power setups. Miles off- 32pitch is mod 0.8; mod 0.5 is something like 48 or 64 pitch ( EDIT: I know what I meant- MOD1.5 is what 1/5 scalers use even... ) nice so i might go with a 36t mod 1 spur then, i also see that msuk sell mod 1 pinions, would i need a mod 1 pinion also? cant seem to find mod 1 spur's on msuk tho Naturally; you can't mix & match gear pitches as the teeth simply won't mesh properly & will strip out instantly. For your erevo, you want the mod1.0 spurs from the ( slightly older? ) nitro revo / tmaxx, maybe a few of the other nitro traxxas models use mod1.0 spurs too that fit the newer style slipper setup ( 3 mounting holes ). Edited February 6, 2012 by suicideneil Quote Link to comment Share on other sites More sharing options...
RooBoonix Posted February 6, 2012 Share Posted February 6, 2012 Ting, Robin (Bubbles) runs a Castle 2200kv in his Hyper i believe... the 87mph one? he was running 36/48 i think, but honestly, them motors can take alot, probably one of the best motors out there Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 6, 2012 Share Posted February 6, 2012 Ting, Robin (Bubbles) runs a Castle 2200kv in his Hyper i believe... the 87mph one? he was running 36/48 i think, but honestly, them motors can take alot, probably one of the best motors out there That was a Hyper 7, with a 1717 (1580kv) motor running 33/44 lol. Quote Link to comment Share on other sites More sharing options...
RooBoonix Posted February 6, 2012 Share Posted February 6, 2012 just found that out earlier :/ still, the 2200kv's are excellent Quote Link to comment Share on other sites More sharing options...
Revorocks Posted February 6, 2012 Share Posted February 6, 2012 just found that out earlier :/ still, the 2200kv's are excellent But yes I will agree with that, very good motors indeed. Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 6, 2012 Author Share Posted February 6, 2012 (edited) thanks suicideneil, i might make a wanted thread on the look out for mod1 spurs and pinions thanks roo and RR i guess ill be running 36t mod1 spur then as i doubt ill find a 34t right? just need to decide on a mod1 pinion now really. still have not got into the bulkheads yet to examine my diff, i just bought this so a simple pop out and in should be in order, just the way i like it, well thats till i take it apart and find more damage http://www.ebay.co.u...49#ht_576wt_932 EDIT< oh oh oh this is what im after right? http://www.ebay.co.u...20#ht_682wt_814 edit, EEK! just saw this! True-Track + Top Speed = Bad Results I just installed RPM's True-Track Rear A-arm kit. Not a good idea for high speed runs. It tracks true up to 57 mph, but after that, my E-Revo would always veer to the right and then flip over. After a half a dozen flips, I gave up. Very discouraging to keep seeing your E-Revo flip over and go sliding on its roof. Surprisingly, my Garmin Etrex GPS still works. It is really scratched up badly, but it is still functional. I should have left the stock rear A-arms in place. The stock rear A-arms got me up to 62.8 mph and I really should have left it alone. I should have listened to that quote, "If something works fine, don't mess with it".i might have to get rid of the tru's for high speed drags Edited February 6, 2012 by Tingting44 Quote Link to comment Share on other sites More sharing options...
suicideneil Posted February 6, 2012 Share Posted February 6, 2012 (edited) I don't see how truetraks caused that guy's crash really, more likely a gust of wind, torque steering, bump in the road etc- only a serious bit of flexing or failure in the a-arm or bearing carrier would cause such loss of control. As it happens, most guys doing speed-runs experience 'lurching' to one side- it is largely down to torque steer or uneven wear/ballooning on the tires, takes a lot to set a truck up to go fast in a straight line reliably. As for Mod1.0 pinions, best ones out there are the rc-monster.com hardened steel items, or the robinsonracing.com ones- a lot of other brands use aluminium or plain steel which wears down quite quickly: http://www.rc-monster.com/proddetail.php?prod=5mmmod1pinion&cat=40 http://www.robinsonracing.com/catalog/brushless_pinion.html#one-mod As for mod1.0 spurs that'll fit- your google foo is weak: http://www.ebay.co.u...=item45faa6a620 36t http://www.ebay.co.u...=item5d3028774c 38t http://www.ebay.co.u...=item5632cd4bfb 40t Worship me later... Edited February 6, 2012 by suicideneil 1 Quote Link to comment Share on other sites More sharing options...
Granby Posted February 7, 2012 Share Posted February 7, 2012 Mod 1.0 gearing, hmmm think i've found my next mod 1 Quote Link to comment Share on other sites More sharing options...
Tingting44 Posted February 7, 2012 Author Share Posted February 7, 2012 thanks suicidle buddy you are the man!! i know my google foo is bad lol really thanks mate : yeah granby its all about the mod 1 gearing ftw i think still not taken my diff out grhhhh not enough time in the day Quote Link to comment Share on other sites More sharing options...
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