RC Tank Warfare community hobby forum

Hi guys my new challenger 2 is being a pain first run drive hub came loose , now the track keeps jumping off the teeth on the drive hub , I have tried to adjust the tracks no luck , I removed a section of track but then it was to tight so had to refit
Strange thing is it I run it on carpet it seems ok , but once I run it in the garden( very short grass) with in 2 feet the track has jumped the teeth again
Any ideas before I send it back , I can't see the point of a tank I can't use outside

Are the suspension arms on tight? if they're too loose they can cause this. Also is the the sprocket inline with the road wheels. Take the track off and make sure the centre of the sprocket lines up with the centre of the the road wheels.

Hi Woz yes I did check that and was ok , there was a thread on here with another challenger jumping tracks they put tracks of a German tank , the tank is fine on concrete or carpet you can drive really hard it's just on grass may be ground is ruff under the grass ?

Everything you need to get a Challenger running well is in the Challenger build section. They are notorious for loosing tracks, as are all long wheel base, rear drive , modern tanks, and require some work to get them to run well.

Due to the Heng Long track’s design they fill the sprockets with dirt. Get some duel pin track and dump the single pin HL tracks.

Does yours have track adjustment on the front idler? If not it may be an older one. They need their tracks tight.

They will not do pivot turns on grass. Big wide turns are the order of the day.

They require lots of maintenance due to the compaction of dirt in the sprockets and wheels.

Try spacing the sprocket half out and then space the sprockets out from the drive shaft.

Install drive shaft bearings, and stiffen the springs on the first and last wheel stations.

Space out the sprockets, and stiffen the springs first, as these are a cheap assists, requiring no more than 4 washers, and a bit of time.