Sick of going through diff's on my ERBE !!!

Hi All,

I'm going through diff's on my erbe like tic tac's and I'm sick of it! My slipper is very loose, i've upgraded to avid bearings, aluminum diff case and cup...still, they're toast after the 3'rd or 4'th run. I think what's causing the strain is me using the throttle to control the nose while in the air. i'm not landing it throttle on etc...honestly, i think i'm rather easy on it, too easy. Which is why i'm giving up on this rig. I've spend a ton of time and a ton of money on upgrades and i'm not happy with the results. yes i am running 6s and do not want to go back to 4s...that's not why i bought it.

I have two questions.

1) Aside from ls lst diff's (heard mixed results) is there anything i can try as a last resort to beef up the diff's on my erbe.
2) What's a alternative Truggy (not interested in savage sorry) which will be much more durrable and allow me to use the MMM and motor combo along with 6s that I can bash around with.

I realize parts will break given the power and abuse we throw at them. but honestly, the erbe on 6s is a joke. i have been warned by others and now i'm swallowing that pill. I would just like to take it out once in a while and play around with it, rather than driving to a pit and have something break in 3-5 minutes or mild bashing.

Suggestions or advice on the most durable Truggy are greatly appreciated

[lincpimp]

Well, sounds like you need a lst2.

Pretty much any truggy will be more durable than the revo.

Lst diffs work great in the revo if you mod the bulks and the lst cases. The rcm hybrid diff cases are the only drop in option, but Mike is not currently making them. I have heard that fastlane are making a hybrid revo bulk that will accpet an 1/8 diff, but no idea on cost or timeframe.

I never cared for truggies, boring. But the hyper st I had was very well built and looked very strong. Might be a good option?

[JERRY2KONE]

Well welcome to the RCM forum. I am sure that there are plenty of guys in here on the know who can help with your problem. First of all for the time being can you set your power ban down just a bit to save your diffs temporarily. Yes it is nice to have crazy power, but it is not always the best choice to have things set balls to the walls. Second I do not have an ERBE but share your whole electronics setup with us and lets brainstorm on the problem (ESC, Motor, Batts, what speed are you geared for, Etc...). Just from your explanation it sounds as if your diffs might not be setup perfectly (shims?). Just an observation. Are the gears in your diffs hardened steel, or stock?

Why do you say truggies are boring? my biggest concern with going to a truggy or buggy for that matter, it's limited ground clearance and bash'ability. I just desperately want some more durability...

Originally Posted by JERRY2KONE

Well welcome to the RCM forum. I am sure that there are plenty of guys in here on the know who can help with your problem. First of all for the time being can you set your power ban down just a bit to save your diffs temporarily. Yes it is nice to have crazy power, but it is not always the best choice to have things set balls to the walls. Second I do not have an ERBE but share your whole electronics setup with us and lets brainstorm on the problem (ESC, Motor, Batts, what speed are you geared for, Etc...). Just from your explanation it sounds as if your diffs might not be setup perfectly (shims?). Just an observation. Are the gears in your diffs hardened steel, or stock?

I'm running 6s geared for around 45 mph max MMM 2200kv neu motor. the gears are the stock traxxas ones (ring and pinion) and they have been shimmed properly. i just truly think that the erbe is not designed properly to handle 6s. I try and leave my slipper clutch as the weak link or even don't mind replacing the drive shafts occasionally, but the amount that the erbe is down is not appropriate.

Quick story, long time ago when i first got into rc cars i bought a Mauruchi Hunter (i was a little boy). at first i had a grin ear to ear when i drove it...soon it disappeared whith all the problems i had with its drive train. My other two friends had the same problem with their hunter. Then i switched to Tamaya, bought a Frog then a Falcon. Better, no drive train issues but still a little too beginerish i felt. Then I bought a RC10 and that was the love of my life (rc wise :). I started racing it and it dished out everything i threw at it...and more. Parts would wear but rarely break. That's what I'm looking for, something which is designed to handle todays MMM output on 6s.

I realize that's a big difference power wise today from yesterday's nimh and cad batt's motors etc. However, I'm just looking to take it out occasionally and have some fun with it. My erbe sat on the shelf for almost a year...now I know why i put it away.

I was warned that i would spend all my time and a whack of money on the thing...and i have. I think its time to move on. I'm hoping to use my radio (dx2s) 2x3s xps 5000mah lipos and my MMM and neu motor (have new back up in box) on a new rig.

Any advice on what truggy (maybe a buggy) to look at would be appreciated.

[lincpimp]

Originally Posted by FUNBOSS

Why do you say truggies are boring? my biggest concern with going to a truggy or buggy for that matter, it's limited ground clearance and bash'ability. I just desperately want some more durability...

Yeah, limited ground clearance and I am not really fond of the center diffs for bashing. You have to fill them with thick fluid to do wheelies and such.

Now if you want the best of both worlds a Losi Muggy will easily handle your 6s setup. Run 50k fluid in the center diff, and upgrade to rpm arms and new era hubs and you will be good to go. This can handle 40 series wheels and tires, and is build very tough. Good solid diffs, and lots of parts interchange with the lst.

[josh9mille]

when i had my erbe i went through those stupid pos plastic axles all the time, and when i say "all the time" i mean like i was damn lucky if i could get a set of batteries through the stupid thing before i broke one. I know you dont want a savage (not sure why not?) but i sold my erbe and bought one and i couldnt be happier. A truggy might be boring like other have said because of the center diff and ground clearence issue. I agree with Linc, get an LST XXL or LST2 and convert it to brushless, they are the next best thing to a savage as far as toughness goes

Originally Posted by lincpimp

Now if you want the best of both worlds a Losi Muggy will easily handle your 6s setup. Run 50k fluid in the center diff, and upgrade to rpm arms and new era hubs and you will be good to go. This can handle 40 series wheels and tires, and is build very tough. Good solid diffs, and lots of parts interchange with the lst.

Arent those pretty hard to come by since they havent made them in like 4 years?

Well, I wanted a truggy/buggy initially but decided on the erbe becasue i wanted something that would handle close to a truggy and offer the ground clearance of a monster truck...erbe seemed to fit the bill the best. Soon i started going through the stock drive shafts like tic tac's and diff's too. I upgraded to steel traxxas cvd's which were not much better. I've since switched to summit shafts and they seem to hold up much better. the reason i don't want a savage is bc they just don't seem to handle as well and tend to flip over too much.
i just took the front diff's off and realized that the ring bearing had let go. this wasn't the upgraded avid bearing (as is the case in the rear). maybe its time to just get out of rc cars for me once again...go back to my heli (trex 550 3g) or my yz450.

[josh9mille]

Originally Posted by FUNBOSS

Well, I wanted a truggy/buggy initially but decided on the erbe becasue i wanted something that would handle close to a truggy and offer the ground clearance of a monster truck...erbe seemed to fit the bill the best. Soon i started going through the stock drive shafts like tic tac's and diff's too. I upgraded to steel traxxas cvd's which were not much better. I've since switched to summit shafts and they seem to hold up much better. the reason i don't want a savage is bc they just don't seem to handle as well and tend to flip over too much.
i just took the front diff's off and realized that the ring bearing had let go. this wasn't the upgraded avid bearing (as is the case in the rear). maybe its time to just get out of rc cars for me once again...go back to my heli (trex 550 3g) or my yz450.

I wouldnt give up just yet. Just off that ERBE and get a LST like Linc mentioned, they are a good balance of handling and durability. I agree about the savage not handling well, but they sure take abuse like a champ.

[lincpimp]

Originally Posted by josh9mille

Arent those pretty hard to come by since they havent made them in like 4 years?

You still see them up for sale here and there. Sometime I wish I had not sold my muggy.

As far as handling goes, alot of people think the revo handles really good, then they race a lst2. Considering its size and weight Losi got the lst2 right, it handles as well if not better than the revo, especially rough terrain.

Consider losi has 2 distinct sections, their race and sport branches. The race branch is responsible for the eight lineup, the xxx 2wd electrics, and the lst series. True, the lst1 was not all that great from a durability standpoint, but losi fixed that on the lst2 and it is a great platform. Losi makes their parts very well, some of the best molded parts I have seen.

After owning alot of revo based stuff I now only have a summit, and as far as I am concerned it is the best use of the revo chassis.

And I understand about the dislike of the savage. I have had a few and still have a few, and I really would not miss them.

Originally Posted by lincpimp

You still see them up for sale here and there. Sometime I wish I had not sold my muggy.

As far as handling goes, alot of people think the revo handles really good, then they race a lst2. Considering its size and weight Losi got the lst2 right, it handles as well if not better than the revo, especially rough terrain.

I completely agree. I recently did a custom chassis for my LST and the handling is awesome. I would of raced it last weekend but i keep having reliability issues, these issues are cause of stuff i made not stock losi stuff.

Also, i think the added weight may actually help it get better traction and make it feel more planted.

I also regret selling my muggy but at least it went to a good home (v8Hatch)

Just my $0.02

As for the e-revo issue. i completely agree with what has been said above, sell it. buy a LST2 and have some fun. I also own an e-revo but it is primarily for racing and i never use it otherwise, i also have an electric revo which i bash but not very hard. Technically i own 2 LST XXL's, they are great, once you get them set up the way you like it you will love 'em. Just remember to shim the diffs, if you don't they can break.\

Wow, i really hope this all made sense.

[mistercrash]

I have to disagree. The LST/LST2/XXL are fun MTs, they are tough... enough. But as for their handling, they are big fat pigs.

Originally Posted by mistercrash

I have to disagree. The LST/LST2/XXL are fun MTs, they are tough... enough. But as for their handling, they are big fat pigs.

My last diff problem was a bearing which let go (front diff's/first time) and the rear is where all the mods have been made (avid bearings, aluminum diff cup and case) and it's seems to be holding up. Time will tell.

My question to you mistercrash is, I know at one point you moved to another MT (which one was it), did you go back to the ERBE, is so why? I've seen your lst2 diff mod, are you having success with this setup?

Sorry Mistercrash, but you're the man that just might save me from selling her...I still love it :)

[Ola]

FLM answered my email now, and said theire alu bulks are in testing now, and might be in production in 2weeks time or so...!

Earlyer they said they will be making them for 1/8 diffs, so this will be VERY interesting for the Revo people..

Dont know what diffs they are testing with / making them for though..
And i`m to polite to ask more questions about it.

[superman465]

http://www.rc-monster.com/forum/pict...&pictureid=837 Will Race Your Revo Any Day See Ya lol!! I won't even see you in my rear view lol!!