Diff resistance

[GR8 PMKN]

I have a question about differential/axle resistance. I have the Helical gear in my front diff and the standard in the rear. Both are shimmed I think properly although there is more play in the rear. The front I did not have to add any shims where the rear I added some. Right now with the drive shafts NOT connected when I spin the tires by hand the rear is alot more free. The front has more resistance when turning the wheel.

Is this due to the Helical gear, shimming or something else?

Thanks in advance.

[bent_hinge_pin]

Originally Posted by GR8 PMKN

I have a question about differential/axle resistance. I have the Helical gear in my front diff and the standard in the rear. Both are shimmed I think properly although there is more play in the rear. The front I did not have to add any shims where the rear I added some. Right now with the drive shafts NOT connected when I spin the tires by hand the rear is alot more free. The front has more resistance when turning the wheel.

Is this due to the Helical gear, shimming or something else?

Thanks in advance.

Sounds like the helical cut gear was a tight fit and may be causing the binding

Sent from my LGLS991 using Tapatalk

[bent_hinge_pin]

Try running it and see if it loosens up keep an eye on esc and motor temps if its real tight it will over heat them

Sent from my LGLS991 using Tapatalk

[GR8 PMKN]

Originally Posted by bent_hinge_pin

Try running it and see if it loosens up keep an eye on esc and motor temps if its real tight it will over heat them

Sent from my LGLS991 using Tapatalk

Sounds like a plan. The helical gear was tight on installation. I did habe some heat problems the last run, but accounted that to the 1.9's I put on without changing gear ratio.

[Natedog]

Originally Posted by bent_hinge_pin

Try running it and see if it loosens up keep an eye on esc and motor temps if its real tight it will over heat them

X2, good quality high pressure grease will help. Helical gears like these tend to have a bit more friction by nature as the gear teeth slide against each other more. Getting mine ready to install so we'll see how tight mine are.

[GR8 PMKN]

Tore it apart and something isn't true. Either the gear or the housing. I can turn it so far and then it binds, appears to be in the spot on every rotation.

[Natedog]

Shim it so it’s not too tight at tight spot, use good grease and run it. Should seat in ok.

[GR8 PMKN]

This is with just the ring gear. The cover and pinion are not attached.

[Natedog]

Make sure both bearings are fully and squarely seated on the ring gear/spool. Pictures?