GReddy

iTrader: (4)

hey if my gears are 64 pitch how should i mesh them? like say a normal peice of printer paper i just use a single peice and mesh them with that or is there a better way?

edseb

I just do it by feel. Mesh it so that it is tight, then back it off till you feel a slight play in the gears. With 64 pitch it will be very subtle compared to 48 pitch.

Chris Brown

iTrader: (19)

I personally never liked the piece of paper theory but I have always tried to pull the pinion away from the spur about 1/3 the length of the tooth height. That has worked for both 48 and 64 pitch.

axel

I always insert the pinion. without tightening the grub screw, then I spin the spur to see how free it is, it should spin fairly well. It should also feels very free.

ChadCapece

Here's some money saving advice:

Since spur gears aren't true all the way around, the gear will not be a perfect circle. What you want to do is set the mesh to have a "tick" of play in the gears. Now spin the spur and pinion so that you can find the depressed side of the spur. Set the mesh to have a tick at that point. Then keep spinning it to make sure it isn't too tight on the other half of the gear.

This will save you money, b/c when most people blame their stripped spur b/c of tight or loose mesh, the mesh could have been right when you first looked at it, but the gear had a low side that was too loose. That low side will break the teeth and ruin the gear.

GReddy

iTrader: (4)

k thanks

i ask this because i used the same electronics on my tt01 and the motor barely got hot

and now on my 414 the motor and esc gets really hot

onnetz

did you setup both cars to have the same rollout?
the mesh would have to be pretty tight to make the motor run hot.

rough512

iTrader: (12)

When I'm installing a 64p 36T pinion, I'd install a 37t pinion and mesh the gears so it's snug. Tighten up the motor screws then remove the 37T and re-install the 36T pinion.

Perfect mesh. Works every time . I still do try to find the portion where the gear mesh is 'tightest' when installing the oversized pinion.

Entropy

The paper trick works in theory. However in the real world, no 2 papers are alike in GSM (thickness).

So dump the paper trick, unless you're meshing gas car gears.

For me I make sure i can rock the spur gear by feeling at the tightest mesh portion of the spur gear without visibly seeing the spur gear move.

Basically you can feel the play of the spur gear teeth and pinion but you shouldnt be able to see the spur gear move with your eyes.

Only ever stripped my spur gear twice. Once was when I forgot to tighten the motor on the mount, the other time was a crazy pebble got in between.

jland

iTrader: (87)

Here is a trick I learned that seems to work well on 64P. If you want to run a 24T pinion, put a 25T on and push the motor up to the spur, take it off and put the 24T on. Perfect mesh every time.

edseb

Ooh, I like the idea of that technique; got to try that one.

GReddy

iTrader: (4)

it might be that its a 8:1 ratio not sure about the roll out so its probably because i had to hold the throttle all the way a hole lot more

Jeff Brown

Well, if the drivetrain ratios are different then you will need a different pinion. Other than that you should be fine.

Jeff