motor pinion gears?

[lister fiend]

Hi all
I've just purchased a pair of graupner speed 400's
& was wondering what to do with the pinions.
Can I just reuse the old heng long ones
or should I get new ones?
Cheers
Lister

[Tankbear]

I found it impossible to find suitable pinion so I say reuse your current ones.

Ian.

[lister fiend]

Thanks Ian,
Always comming to my
Rescue
There should be an "ask ian" section
Cheers
Lister

[Tankbear]

Just a case been there and got the tshirt

If you haven't already I would reccommend a pinion puller as is miles easier getting the thing off.

Ian.

[lister fiend]

thanks for the heads up ian
are they bonded on? or just a compression fit?
& what about refitting?
thanks for your patience in the daily 100 questions
lister

[Tankbear]

I think the pinions are put on hot so when it cools is a tight fit on shaft. But will come off with a pinion pullet (you be surprised how much force you need)

To put on I use a bit of spit (for lube) on shaft and push on as far as can by hand then some pipe grips to fully push on the shaft. Just make sure the pipe grips are on the shaft at both ends of the motor or you risk bending the shaft.

Ian.