TC3 Noisy

[rbecking]

I've got a TC3 racer that I've used a few times now but I've noticed it is quite noisy compared to other cars but seems to perform ok. Can only think it could be something to do with the diff. I've seen people mention taking shims off but I've not sure which ones. I have the diff tightness set to half a turn from full tightness like the manual says, is this ok?

Also read something about problems with new white diffs which I have, what is the problem with them?

[Ben Turner]

The diff thrust screw only alters the diff action not the mesh of the gears. I found that unless you are running fast mod motors, you can run you diffs losser then this. I think i do mine at around 3/4 to 1 turn off the spring being fully compressed. As for the mesh you want to make sure that the gears are not binding to much. You can do this by taking the cover off and removing shims on the diff till it is not quite tight in the case, then take shims off the input gears till you have a tiny bit off backlash and there is no tight spots.

Ben

[dominic evola]

Also try your pinion, and do you maintain your motor EVERY week, and chack it after EVERY race.

Regards

DEMON

[nicholas mitchell]

i shaved a bit off the inside of the diff casings where the bearings sit to make a bit of room to make them run more freely.
i built a tc3 racer from new and it was quite loud compared to other cars, then i got a second hand tc3 team and the transmission was set up the same but was far less noisy.
nick

[AzNDRAGster]

A TC3 is always noisy in my opinion, hell, most shaft drive cars are noisy. Take the SD for example, when you first build it and put the battery in, everything else, you tap the throttle a few times, NOISY. 45 DEGREE gears are noisy until they are ran for a while.

[rbecking]

Whats the problem with the white diffs?

[Ben Turner]

Im not sure but i think it might be to do with the pinion gear rubbing slightly on the case. The old gears didn't have as much material in this part so there was enough clearance.

Ben

[John Pape]

You just need to shim the gears different for the white ones, as the input one is moulded slightly different.

As said above, the tc3 is noisy compared to other cars but don't worry about it. I really concerned put some more grease on the gears.

[rbecking]

I've been working on the freeness of my car, I have the rear end very free now but the main problem is the short front input assembly into the diff. When I spin it it stops straight away, tried cutting away some of the casing but this doesn't seem to have helped. I've noticed that there is no play though which could be causing the problem?

[nicholas mitchell]

try using either more or less shims on the input shaft and give it a whizz, i wud personally try less shims(washers) firsrt

[webba]

One thing that i noticed has made all my associated cars noisy (b3 b4 and TC3) is if i have replaced the spur gear with a non associated (kimbrough??) gear. Non-standard ones seem to make the cars really noisy, so i always use oem spur gears now.

[AzNDRAGster]

You shouldn't grease the spur or diff gear. . . . all it does is make clean-up harder.

[rbecking]

I raced my car tonight and it is still very noisy compared to other TC3's. This week I took apart and cleaned all the diffs/bearing/hubs etc and it is very free without the motor.

I think the noise is coming from the pinion/spur.

Any advice?

[markwilliamson2001]

Yeah i had the same problem with my TC3 Racer at first. Later found out that I was running a .6 module pinion with the standard spur. ::) This made it very noisy. Also make sure that u dont clamp the motor too tight as this twists the chassis.
mark

[nicholas mitchell]

i personally fink the kit spur gears are a bit pants, they dont give a very nice mesh cos they're so wide. try a skinny one from another company and u shud see better results!
nick

[rbecking]

I bought 48dp pinions, are they right? What type of spur is best?

[Stew Noble]

yea 48dp is right. i tryed the std spur and it was aweful, noisy and bent if u looked at an impact. i tryed a skinny 1 too, it was quiter and a good mesh. however ive jus started using a 68T yokomo spur. it seems to be much quiter and meshed great. it can also be secued with 4 screws insted of the normal 2. this reduces the chance of the spur bending too

Stew

[rbecking]

How close should the pinion mesh to the spur? Should it be tight against is or should the spur be able to move slightly?

[Stew Noble]

you should be able to move it alittle, the amount is difficult to describe. i suggest asking another racer, as its really a thing that has to be played about with. and eventuially youll just be able to tell, by feeling it.

HTH

Stew

[rbecking]

Just had a look at my spur and it moves quite a bit length ways ie the direction of the drive shaft. Should it do this? Could this be causing the noise?

[nicholas mitchell]

i am using a yokomo spur gear in my B3 buggy and tis very good

[rbecking]

I've got a feeling I might have found my problem, yesterday someone was skimming my motor and it was vibrating a lot in the lathe, we then looked at it and the armature is bent! Guess it could of been that causing the noise, won't know till later in the week when I get a new motor.

[AzNDRAGster]

Armeratures get bent easily in a hard crash, I have bent one myself. . . .