Does this look right? Tekno Pinion

[Speedy!]

I wore out the original pinion on my 6S Kraton BLX. I swapped over to EXB diffs and I might have had the center too tight, or it just wore out under normal wear. Probably had 30 packs through the vehicle. I tried replacing the pinion grub screw as I thought it had just come out, but the pinion itself was loose on the motor shaft so it had been rocking for a while.

I bought a Tekno 12t pinion to replace it however it's quite a bit different from the stock Arrma pinion. It's about half the length and there is no flat machined in it. Is that normal for a Kraton replacement pinion?

P/N is TKR4172

 

[pug]

It’s normal, you just can’t use the Safe-D feature.

 

[Adiabatic]

Yep that's right and will work fine. Most pinions have no flat and rely entirely on the set screw to keep it engaged with the motor shaft. The flat is something Arrma recently introduced.

 

[Speedy!]

Thanks for confirming guys. We'll see how it does. I gobbed it up with blue TL so fingers crossed. I chucked the grub screw outta the stock 12t, and then again out of the stock 16t while waiting for the Tekno so now I'm paranoid LOL.

 

[Adiabatic]

It's a good idea to clean the set screw and pinion threads with a degreasing solvent before you apply the threadlocker as they usually come with an oil coating from the factory that will interfere with the curing of many types of TL. If you weren't doing that it might explain why the screws were backing out.

 

[Speedy!]

I clean them with lacquer thinner, but I was stingy with the TL. This time I wasn't stingy LOL.

 

[3d-rc.myshopify.com]

Only thing personally I would do is turn the pinion around.

 

[Speedy!]

Only thing personally I would do is turn the pinion around.

I wondered about that

 

[3d-rc.myshopify.com]

I wondered about that

Just easier in many different aspects.

 

[MAVERICK@2]

Tekno makes a good pinion you should have no issues

 

[fish]

I was thinking the same as the OP.
Was wondering if I should put a spacer in the gap between the pinion and the c-clip.

 

[Dan B.]

I was thinking the same as the OP.
Was wondering if I should put a spacer in the gap between the pinion and the c-clip.

View attachment 226733

No.

 

[Diem Turner]

Only thing personally I would do is turn the pinion around.

I don't think the shaft is sufficiently long to get good purchase on it with the grub screw if you turn it around. I could be wrong, just looks like it from here on the pictures.