Clicking from the "MASH" :P

**GULLY** · 01-31-2012 05:46 PM

I was just running the MASH out in some pretty harsh slush and a smooth snowy road, it was going about 20 mph on the road then it kinda just blew out and started clicking. I thought the pinion came loose from the spur or ate through the spur but its not that. k its the slipper clutch I think but how could that have came loose and by that much out of nowhere? and if it isnt the slipper clutch what else could it be? and how do I go about fixing this because i want to get out for another run within he next few hours at least. thanks.

**Jimmie Neutron** · 01-31-2012 05:49 PM

Clicking...

1) servo
2) differential(s)

**RC-Fan** · 01-31-2012 05:49 PM

does the click noise increase with the speed? probably it is a stripped diff, also check for debris under the center shaft cover.

**GULLY** · 01-31-2012 05:56 PM

k ill check under the shaft cover first because i think thats what it is and that sucks if it is...

**Jimmie Neutron** · 01-31-2012 06:07 PM

I'm hoping it is junk under your center cover....

**GULLY** · 01-31-2012 06:31 PM

well it was really diry under there and a pebble scraped a good chunk of plastic off of the spinny thing.. brain fart.. so it seemed fine after i cleaned it out so i put that back on and then he motor back in place and its still clicking and it seems like the slipper clutch but I wouldnt know... now what?

**Jimmie Neutron** · 01-31-2012 06:35 PM

There is not anything to click in the slipper.

**GULLY** · 01-31-2012 06:37 PM

lol so what do i do to fix this or how do i check whats wrong?

**Jimmie Neutron** · 01-31-2012 06:39 PM

Have you checked the servo or the differentials yet?

Are you sure there is not any debris in the spur area?

**krallopian** · 01-31-2012 06:49 PM

Could just be the pinion isn't meshed correctly with the spur gear?

*Edit* just re-read the first post, sorry.

Is it clicking when you take the motor off?
When you disengage the front/rear drive shafts? Figure out where it's coming from 1 step at a time, you'll get to it.

**GULLY** · 01-31-2012 06:54 PM

yeah absolutely no debris under the center cover except for 3 pebbles, I cant see anything around the spur, the servo is fine so i guess the differentials... how do i check? the clicking sounds like it is definitely coming from the gearbox though..

**Jimmie Neutron** · 01-31-2012 06:56 PM

You can tear it down if you want... it is very very rare for anything to click in the transmission.

**GULLY** · 01-31-2012 07:02 PM

so am i gunna have to buy new gears for the diffs? because i wont bother spending anymore time on it tonight if i cant fix it without new gears.

**GULLY** · 01-31-2012 07:06 PM

take note that when i put the little sucker upside down and manually turn all the wheels simultaneously theres no clicking and they go smooth but when i hold it in the air right side up, theres clicking and stoppage.

but either way it runs like crap with the battery in

**Jimmie Neutron** · 01-31-2012 07:10 PM

If it is the ring and pinion, you could shim it tighter... you do have the bulkheads shimmed, right?
Even if you shim it tighter, chances are you are going to need a new ring and pinion IF it is the ring and pinion making the noise.

Diagnosing what it is... that is up to you.

**GULLY** · 01-31-2012 07:23 PM

well ive only had it for a month so Im really nooby.. so the sound has to be in the front diffs if it cant be the gearbox. since you're saying theres a chance i can just tighten and shim this stuff together once i figure out how to get in there , I'll give it a shot i guess

**Jimmie Neutron** · 01-31-2012 07:26 PM

There is a front and rear differential.
It could be either.
It takes shims... Associated 21141 I believe... to shim your bulkhead.

http://traxxas.com/forums/showthread...-your-bulkhead

**GULLY** · 01-31-2012 07:42 PM

K thanks a lot man. sorry for being a bug but why does the clicking sound come from the middle when the diffs are front and back? the spur and the gearbox are making all the clickity grinding noise. I dont know

**Jimmie Neutron** · 01-31-2012 07:45 PM

Sound can travel through multiple medias.
The drive shaft is directly attached to the transmission.

Again, if you feel it is the transmission, feel free to check.
The transmission in these are not complicated at all.

**GULLY** · 01-31-2012 08:00 PM

k thanks a lot jimmie, you've been extra helpful... im just gunna start stripping from the front to the back and ill post back what the problem is, probably tomorrow afternoon.

**GULLY** · 01-31-2012 10:51 PM

i found the problem, I'll do a new thread tomorrow with a short video from youtube or something

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