Need Help With Helical Diff Gears

RCRacing88 · #1 03-08-2011

Hello,

today I picked up a helical pinion gear for my 1/8 buggy's front diff, and also had to pick up the diff gear to go with it.

When re-assembled the diff after changing out to hardened outdrives too, the diff gear and pinion will not sit correctly in the housing.

Hopefully these pictures will give a clearer understanding:

Hope fully you can see that the diff gear is not sitting on the pinion well, lifting it up at one side.

What is causing the problem? and how can I resolve it?

Thanks

ben · #2 03-08-2011

The diff gear looks to be too thick, making the overall size of the diff bigger, so it's pushing the bearing out. Meaning it wont slot in the housing correctly.

Is it an aftermarket gear?

ben

RCRacing88 · #3 03-08-2011

No it's not mate, Got it today from LHS. Pinion was from caster website that LHS ordered in, and diff gear was taken from another buggy still in box at the shop.

It's just strange that the gear that comes from caster, doesn't fit the diff

showtime · #4 03-08-2011

you said it was a "helical" pinion (it does seem to look a tad helical, but only a bit) but it looks like you're using a straight cut grown gear.
well those 2 aint ever gonna match up are they!

you need a straight cut pinion gear too

RCRacing88 · #5 03-08-2011

Quote:

Originally Posted by showtime

you said it was a "helical" pinion (it does seem to look a tad helical, but only a bit) but it looks like you're using a straight cut grown gear.
well those 2 aint ever gonna match up are they!

you need a straight cut pinion gear too

The crown gear isn't straight cut mate

It's deffo helical, both are slightly curved, they mesh perfectly fine when out of the diff housing.

showtime · #6 03-08-2011

furry muff, it does look straight cut in those pics tho