Important Revo Information!

[cptvkirk]

slipper clutch

Had an issue with my slipper clutch, apparently a pad had broke in half and left the clutch. Indictated by slipper no longer holding and allowing engine to spin up. This was within the 1st quart of fuel and about 2 runs after break in. Easy fix, an email to Traxxas had a rebuilt kit in the mail to me within two days. Just something else to keep an eye on.

 

[Bartek]

Traxxas Revo is a well build truck,it's sure one of the best trucks ever build for every day use,it's not demanding,spare parts are cheap,it's hightech and easy to control.
all what it need is a good owner that knows what is he doing...

 

[Captain Chaos]

:bow:Bartek

 

[scottm]

Wow, this thread is so old it has posts from Christian and Humbolt... I hope they are well.

 

[Revo3.3Racer]

thanks for the info !

 

[2revo1maxx]

Flushing your fuel tank.

We have seen a few tanks that had plastic material inside. I suspect it came from threading in the fuel hose nipple or from when the tank filter was installed. Here is the deal with plastic particles! They can block your high speed needle seat. If they are small enough to get through there (That is the smallest restriction in the carburetor) they will go to the combustion chamber. Once there they will instantly make a plug useless. Here is where it gets a bit tricky. The plug will glow bright red or orange when you test it but once it has the plastic on it, it will not start the engine.

It is pretty easy to fix. Remove the fuel hose from the carburetor. Block the exhaust with your finger tip. Push the starter button and flush about an oz. or two through the hose to clear it. Remove the tank. Shake it up a bit to loosen anything that might be inside and dump the fuel. Remove the high speed needle.

Important note here. Remove only the high speed needle, not the needle housing. Turn it counter clockwise (just like you are adjusting it) until it comes out.

Blast out the housing with compressed air or R/C motor spray. (Protect your eyes) This will clear the needle seat. Hook everything back up and reset your HSN to the factory 4 turn setting. Get rid of any contaminated plugs. Install a brand new plug and try it again.

If your truck has never been started then it is easy to simply remove the hose from the carburetor and flush it out as described above. This is a quick thing to do to prevent a possible problem!


Brake pads coming off

If you have a problem with brake pads coming apart give us a call!

Here is a quick solution! The only good way to bond the brake friction inserts to the aluminum holders is with high temperature RTV (silicone), black is preferred. To re-bond the pads, clean the pads and holders thoroughly with alcohol or motor spray. Be sure to remove all the old silicone (sand paper, hobby knife, wire brush may be needed), then apply fresh high temp RTV to the aluminum holders. Very little RTV is needed. (NOTE: Don't use CA. It will ruin the pad. If you have already tried CA, you need new parts.) Three little dabs of RTV are enough. The friction inserts should be firmly pressed into the holder so there is no gap between the pad and holder. A small amount of RTV may just squeeze out around the edges. Let the RTV dry for a few hours. Reinstall and adjust the pad-disk total clearance to 0.5 mm.


Wheel Nuts

Running the REVO wheel nuts too loose can damage the hubs, leading to parts failure. Check the wheel nuts to make sure they are tight; it is difficult (though not impossible) to over tighten them.


Slipper Clutch

The REVO slipper clutch has a wear-in process that roughly coincides with the engine's break-in process. Until it has worn in the slipper will not have as much "grab" as it will later. After about a quart of fuel the clutch should be properly seated. Avoid adjusting the slipper clutch until it has finished seating.

It is better to have the slipper on the loose side rather than tight, in order to protect the transmission. It will not melt out like standard slippers can when run too loose. You can tell if the slipper is too loose because the engine revs will increase when the REVO shifts from 1st to 2nd.
Always adjust "from loose to tight". In other words, set it loose and start tightening up as needed.
Do not adjust the slipper clutch by tightening it all the way down and backing it off. If you tighten it too much you can crush the pressure plates.


Spur gear

The REVO spur gear is mounted with the writing "out", (away from the transmission). If you put it on backwards there will be reduced clearance between the spur and the slipper pressure plate. This may interfere with the air filter boot and/or clutch bell.


Brakes

The Brakes must wear in the same way the slipper clutch does. The brakes will continue to get stronger as break-in proceeds.
After your first quart of fuel, the brakes should be adjusted this way: (All these methods will work)

Visual test: there should be minimal space between the spring and the brake arm when the throttle is at neutral.

Rolling test: roll the truck and slowly apply brakes - the truck should roll freely with no resistance from the brakes when TX is at neutral - the brakes should start to engage shortly after pushing the trigger forward.

Wiggle test: grab the brake spring on the adjuster loosely and attempt to wiggle it. There should be a bit of play. No play means the brakes are dragging. Too much play (more than 1/8") means the brakes are going to engage too late.


Servos

Do not move micro servos (or any servos for that matter) by hand. They are high-ratio servos and manual movement can strip the 2062 gear set.


Source: Traxxas

I thought the revo tank had a filter inside. If not then I've been real lucky!!

 

[Metalhead Matt]

If there was plastic in the tank in 2004, it's probably gone by now.

 

[jsalvati]

wow great to know ok roy maybe u could help me I trying to buils a revo 3.3 5309 I've never dont it before so I was building it from videos on you tube but videos stop after part 6 any thought or ideas besides traxxas detailed videos are great

thanks
john

 

[Rolex]

I'd guess a lot of those early bugs have been worked out since the thread was posted in 2004.

 

[hamz9561]

I had an original 5309 Revo 3.3 and it didn't have those problems when it was new back in 2007 or so.