If you've had a diff failure- let Traxxas know...

[FreakyT333]

So I like many other ERBE owners have had diff failures more than one should. I recently spoke to a Traxxas representative (2 actually on separate occasions) about this issue and was told that I am the first person they have had call about frequent diff failures in the ERBE. Now obviously I'm not the only one with this issue but apparently since noone else has called in about it Traxxas was not aware that this is an issue that needs to be addressed...

So I say if you have had this issue with your ERBE and want something done about it then post it up here, then call Traxxas and let them know about the issue as well. The rep explained that they have regular meetings to discuss and address frequent issues/failures that are reported to them.

I for one would love a tougher diff set up for the ERBE (true 1/8th scale) available straight from Traxxas and not have to mod my rig to fit another brand diff or spend 100$+ on aftermarket cups/cases that may help the issue.

Now just to clarify, this is not a bad slipper adjustment issue, nor is it from crazy 6s standing backups and 30ft on throttle landings. Almost all of my failures have been from mild bashing on 4-5s with a proper set slipper and maxx size/stock tires. My failures have been mainly the ring gear but on 2 occasions the internal diff cup/gears blew.

Also this is not intended to be a bash Traxxas products thread, they have made several amazing machines that we all love. So lets help make them aware of the issues and hope for an even tougher ERBE.

BTW- I also mentioned to the Traxxas rep the thread MC created about the improvements we all feel the ERBE needs, he said he will bring that up at their next meeting.

[Mustang63.1]

Thats good to hear that they will bring it up at their next meeting. On my 3905 emaxx that uses the same diffs, I caught my diff before it stripped. The bearings on the pinion gear were blown up but the gears hadn't stripped yet. But I have FLM Hybrid bulkheads on the way to throw in some lst xxl diffs and driveshafts so I don't have to worry anymore.

[anr2442]

It is the biggest problem with the ERBE... besides the tires, axles, and hex wobble
If we are going to get anywhere with any type of upgrade from traxxas they will have to monitor the forum suggestions. Hopefully MC's thread wont fall on deaf ears.

I have also gone to modding since the stock parts failed too often.

In the near two years i have been running
- 15 diff failures (went to losi lst diffs)
- 4 shredded talons (went to proline tires)
- 20 revo axles (went to summit axles)
- 5 summit axles (about to go to losi lst axles)

[bassman57]

Interesting. My rear diff is the only thing constantly breaking. I'm on my 3rd set of spider gears this month. I wonder if the thick diff oil is a factor. It does add resistance. Any try straight grease in the diff cup?

[USMC_fallguy]

Have had two in the month or so I've owned mine. I know that running 3sx2 is stressful.. but its the way they advertise it. So why shouldnt I run it like that.

[Mustang63.1]

^^^^^^^^ exactly, they also state that they are the only company that make the drivetrain to handle 6s out of the box with out problems which is totally false.

[phrigia]

Been through 6 ring gears myself, when I replace them I can no longer tighten my case all the way or it binds I have to get a replacement case.

[ArmyofDarkness]

That would be a good ultimatum- threaten the CEO with a class-action law suit for false advertising unless he gets his engineers/ trained monkeys to come up with much better driveline components.

HPI reacted very quickly to introduce new diffs & tranny parts when people reported failures on the HPI Savage Flux ( which is powered by the exact same BL system, just re-badged for HPI ), so why after 2 years hasn't traxxas made any effort at all to resolve th weak diffs and driveshaft problems ( not to mention for 3-4 years the new Emaxx has been out with the same weak diffs too )?

I imagine it comes down to R&D costs ( which would be about $25 to buy a single LST2 diff for the engineers to look at ) & complacency- Traxxas are well established and no one makes an MT that handles as well as the Erevo really, but plenty of others do make more durable MTs so it smacks of laziness to me- I don't want to buy a truck and then have to upgrade it to get it to do what it was advertised as being able to...

[FreakyT333]

See I knew plenty more peeps would chime in with the issue, just make sure you call and let Traxxas know as well. I'm sure if 20+ people called in with the same problem it will finally be seen by them as something that really needs their engineers attention. Sadly it sounds like the people at Traxxas who actually make things happen seem to pay little attention to these forums (maybe I'm wrong there...). He did mention he hears about the weak driveshafts a lot, surprises me that people call about that but not diff failures.

Things do break on these (all) rigs, its just when your scared to hit the throttle for fear of another repair- it becomes something in need of attention.

[Eekee]

Thank god finally.. The diff is the only prob ive been since I bought the thing.. If only there was a stronger reliable drivetrain solution..

[ArmyofDarkness]

There are, but it requires $$ and some modding:

http://www.robotwars.00server.com/trucklinks.html

Scroll down to 'erevo drivetrain upgrades'

[VGP12]

That would be a good ultimatum- threaten the CEO with a class-action law suit for false advertising unless he gets his engineers/ trained monkeys to come up with much better driveline components.

HPI reacted very quickly to introduce new diffs & tranny parts when people reported failures on the HPI Savage Flux ( which is powered by the exact same BL system, just re-badged for HPI ), so why after 2 years hasn't traxxas made any effort at all to resolve th weak diffs and driveshaft problems ( not to mention for 3-4 years the new Emaxx has been out with the same weak diffs too )?

I imagine it comes down to R&D costs ( which would be about $25 to buy a single LST2 diff for the engineers to look at ) & complacency- Traxxas are well established and no one makes an MT that handles as well as the Erevo really, but plenty of others do make more durable MTs so it smacks of laziness to me- I don't want to buy a truck and then have to upgrade it to get it to do what it was advertised as being able to...

This. Don't get me wrong, I love Traxxas, but it would be great if maybe instead of using all of this money they get for being the biggest name in hobby RC to advertise in RC Car Action magazine and sponsor dirt bikes, maybe they could purchase HPI, just like AT&T is purchasing T-Mobile. Then, after a collaboration of the two engineering teams, we would end up with the godsend of all RC monster trucks. Something that handles like a dream (ERBE) but can handle standing back flips/6s lipo out of the box (Savage Flux).

If only...

[87 GN]

Remember this thread. Hope MC doesn't mind me posting. Diffs are not the only mod needed. Drives me crazy I buy some 3s & they almost fit, Really
Well they fit in the Maxx. Just because the hold downs are bowed up.
http://traxxas.com/forums/showthread...e-Traxxas-Revo!

[FreakyT333]

Yes that's ^^^ the thread I mentioned to customer service to review at their next meeting. He said they will but who knows if they really will.
The battery fitment issue can definitely be a pain but is not really a huge deal (at least not to me) as there are fairly simple ways around it. A weak drivetrain however is a real headache and honestly unacceptable on an advertised 6s capable mt that can barely handle a strong 4s set up. Noone should have to throw hundreds of dollars at a 700+$ machine just to be able to run it without constant (non crash oriented) drivetrain failures. Its just wrong...

[bigfol]

That would be a good ultimatum- threaten the CEO with a class-action law suit for false advertising unless he gets his engineers/ trained monkeys to come up with much better driveline components.

HPI reacted very quickly to introduce new diffs & tranny parts when people reported failures on the HPI Savage Flux ( which is powered by the exact same BL system, just re-badged for HPI ), so why after 2 years hasn't traxxas made any effort at all to resolve th weak diffs and driveshaft problems ( not to mention for 3-4 years the new Emaxx has been out with the same weak diffs too )?

I imagine it comes down to R&D costs ( which would be about $25 to buy a single LST2 diff for the engineers to look at ) & complacency- Traxxas are well established and no one makes an MT that handles as well as the Erevo really, but plenty of others do make more durable MTs so it smacks of laziness to me- I don't want to buy a truck and then have to upgrade it to get it to do what it was advertised as being able to...

Well said AoD, the more people complain about this issue the better,keep this thread going lads, hopefully traxxas will take note.....

[mistercrash]

Remember this thread. Hope MC doesn't mind me posting. Diffs are not the only mod needed. Drives me crazy I buy some 3s & they almost fit, Really
Well they fit in the Maxx. Just because the hold downs are bowed up.
http://traxxas.com/forums/showthread...e-Traxxas-Revo!

There was a time when that thread was kept on the first page by myself and a few others. I was kindly asked to stop bumping the thread so I stopped. I contacted Traxxas numerous times telling them about some E-Revo issues and directing them to that thread. After a few emails back and forth (me asking and them saying they don't know what the engineering is up to) I ended up getting a polite email saying that maybe I should stop asking over and over again
Probably because I was the only one complaining. Well if many others contact Traxxas and voice their concerns and direct them to the ''Long live the Traxxas Revo'' thread, maybe it will give them enough reasons to inform the engineering department of what needs to be done to make the ERBE the most durable, best handling MT on the market.

[nuclearevo]

Thank goodness for ebay, I have been through many rear and a front or two. My maximizer hardened steel diff cup and aluminum housing seem to be holding up a little better. Bring us a diff we'll love Traxxas.

[ducati777]

I too would like a stronger TRAXXAS diff to be released.

[revomikey]

I admire the thought behind this thread and believe that all items are listed justly, however what you are all forgetting is that Traxxas make money from spares as well as full models, why would they want to make something bomb proof and lose money.

Not hitting traxxas here coz i have 4 traxxas cars including an erbe and 3.3 but they are a business and they dont care about our pockets, they only care about their own.

Of course i would love to be proved wrong Traxxas!

[mistercrash]

they are a business and they dont care about our pockets, they only care about their own

I disagree. Customers who get fed up with a product's repeated failures is bad for any business. Traxxas is run by smart business people, if they learn about this thread, they'll do what needs to be done to satisfy their valued customers. There's no way to make these trucks bomb proof, there are always going to be plenty of spare parts needed by users who always push the limits of the truck. Right now, those limits are way to low and Traxxas needs to address this.

[revomikey]

Keep the faith mc, and keep an eye on the contents of this thread as I can assure you that nothing will be done. Like I said Traxxas. Prove me wrong!

[timritchieblue]

bump for the love of stronger diffs

[FreakyT333]

Man were never going to see diff improvements if there is only a handful of erbe owners actually willing to complain about the issue... Maybe I thought, experienced and heard wrong and this thing already has bullet proof diffs. That would surely explain the lack of response I'm seeing here....

Not trying to rant, just want this issue brought to light by more than a handful of people as I know this issue exists and that's what its going to take for anything to be done about it by the fastest name in radio controll...

[fuzion]

i think anything bulletproof is kind of impossible on this motor power. but an upgrade would be nice yes. steel housings perhaps? cost++

[j.f.s]

I have yet to blow a diff and I'm running a CC1518 on 6s geared 18/46 (mod1) with the slipper almost fully locked. Only broken one drive shaft (running Summit ones now). Running taped GS Storm tires on JConcepts Rulux Half-Ups.

I use my ERBE 95% off road in gravel pits, sand dunes and an occasional trip to a BMX or Motorcross track for some huge jumps. I also drive during summer and winter.

What I have broken is one chassis, two rear bulkheads, cracked two wheels (jconcepts rulux), rear body mount, rear wing mount, melted two spurs and the CC1518 used to make a funny noice (blown bearing)

Maybe it has something to do with how one drives? I try to make sure I'm not on the throttle while landing and standing back flips is something I've tried once or twice. I'm no pro when it comes to driving so cartwheeling is something I consider normal driving style.

[fuzion]

of course its also the wheel weight. maybe thats the most significant factor on diff failure. those JConcepts Rulux Half-Ups seem very light comparing to lets say taped talons or worse (big joes lol)

[mistercrash]

I have yet to blow a diff and I'm running a CC1518 on 6s geared 18/46 (mod1) with the slipper almost fully locked.

You just jinxed yourself, you will soon blow diffs on a daily basis

[ducati777]

I haven't had one fail either.

Back in the day I had a Monster Pirate, and it had weak diffs, and large tires. The cure on that one was aluminum housings, and aluminum diff cups. The failures on the MP were caused by the plastic flexing. Considering the design of the ERBE diff, I'd expect the same thing here.

For you guys who keep blowing diffs, have you upgrades to metal housing and cups? Did it make a significant difference?

[anr2442]

Every single diff is possible to break from extended amounts of wear and tear. The problem is that the components of the traxxas diffs just cant handle THIS AMOUNT of torque bc of design. Its not even a matter of not having the diffs set up properly or having case flex. Hopefully they will test with out a slipper clutch to actually put whatever they give us some real stress.

I wish we had a voting feature on this forum. The option to start a thread and poll everyone who wants to participate would be invaluable.

[sandblaster]

This basic diff is used in the Summit. Have blown several diff's in the Summit. Easy to do if locked up and spin the truck. Think I'm on my third set of diff's and not a hard baser either. The diff's seem to find there own reason to fail when they want to.

[j.f.s]

You just jinxed yourself, you will soon blow diffs on a daily basis

LOL, you're probably right

[clank]

Had my erevo for a year now. So far no diff problems. Been pretty solid for me. My only complaint is the battery compartment doors that split on the bottom.