Straight cut gears v Sprial cut gears

[Axial6768]

Hi all
Decided it was time to pull the diffs out of the XL. My diff gears are straight cut . The rear gears are still in good condition ( using the 3 bearing mod ) but the front diff gears are starting to show a small amount of wear( haven't done the 3 bearing mod yet ) My question is should I replace the gears with the spiral ones, whats the advantage over the straight cut gears. Also deciding on what oil should I put in the front and rear diffs ?
Thanks guys

[Tzicul]

Main problem with the diffs is not the pinion itself, but the bearings. My first set was a straight cut which failed only when the bearings failed. So do the three bearing mod in front also and keep your original pinion/ring until they'll need replacement. It will take some time!

Sent from my Sony Xperia Z5

[Axial6768]

Originally Posted by Tzicul

Main problem with the diffs is not the pinion itself, but the bearings. My first set was a straight cut which failed only when the bearings failed. So do the three bearing mod in front also and keep your original pinion/ring until they'll need replacement. It will take some time!

Sent from my Sony Xperia Z5

Thanks for that Yeah one of the 10 x 16 x5mm bearings was real lumpy as well one of the pinion bearings so have just ordered new ones to replace, will differently be doing the 3 bearing mod. Out of curiosity has any one done the BHB diff wax mod ?
Cheers

[BarHarborBasher]

Originally Posted by Axial6768

Thanks for that Yeah one of the 10 x 16 x5mm bearings was real lumpy as well one of the pinion bearings so have just ordered new ones to replace, will differently be doing the 3 bearing mod. Out of curiosity has any one done the BHB diff wax mod ?
Cheers

I ran ithe WAX mod for 4 months and it's awesome! I ended up doing my Banshee XL and Bomber XL front diff with WAX.

[Burn999]

My mate and I have been running straight cut for a year and no problems. Once we replaced the bearings with decent bearings we have had no problem. I run ali front bulkhead and ali diff cup and get no gear slipping, my mate has plastic ones and gets some slipping of the teeth occasionally.

[84yoda]

Originally Posted by BarHarborBasher

I ran ithe WAX mod for 4 months and it's awesome! I ended up doing my Banshee XL and Bomber XL front diff with WAX.

Does it get hot enough to melt down in the diff cup and turn into a limited slip or stays locked the whole time?

[BarHarborBasher]

Originally Posted by 84yoda

Does it get hot enough to melt down in the diff cup and turn into a limited slip or stays locked the whole time?

Melts down in a few seconds bashing probably comparative to 100,000 cst. ... If I start off crawlings it pretty much stays locked .. the best part is it hardens back up so Everytime the choice is mine. I've noticed that silly putty has a reaction to the powdered metal. The wax is 100% safe.

[Axial6768]

Just out of curiosity does anyone know if any other straight gears ie the same pitch and number of teeth or complete diff will fit into the xl housing

[Adidas4275]

I was just looking at this when I realized I needed to replace my gears after a bearing failure.

I'll ok into the 3 bearing mod too.

Thanks for posting about this!