Senton Juddery rear wheels/rear diff

[MrJoe]

Hi all, bought my first Arrma (Senton 3s) last week absolutely loving it. Yesterday it developed this kind of juddering on the rear wheels. The front is still smooth but when I hold one rear wheel and turn the other it makes the sounds in the video.

I haven't bashed it yet just drive on tarmac and gravel roads.

It also makes this sound pulling off and braking. Any help appreciated.

 

[jondilly1974]

Check your spur gear.

 

[MrJoe]

Checked spur gear its a bit chewed up and loads of dust and dirt in there

When I turn the motor pinion its juddering and clunking

 

[MrJoe]

bump any other thoughts?

Car judders driving off and braking. Its currently back with LHS for a once over

 

[painlesswriter]

Closes thing I had to that was on a castle motor. Ended up being the bearings in the motor itself. Replaced and better than before. I cannot say thats the issue here but I had a chewed up spur as well.

 

[MrJoe]

Thanks I didnt think it was normal. Hopefully they replace the motor or quickly do whats necessary missing my car

 

[razorrc]

Your motor shaft seems to have a lot of play in it. It will be notchy as you turn it by hand because of the magnets in the motor, but there should be no side to side movement like you see there. Probably need to replace the motor bearing.