Originally Posted by
Truebuild
Hi,
I have secondhand Heng Long tank and it work ok most of the time; however, it has a habit of throwing one of the tracks.
By throwing I mean the track jumps so that the rear sprocket is no longer between the track tongues that should be either side of the sprocket.
What should I look for to repair the fault?
I'll try to help. Best if we knew what model of tank. Always give the make and model of your tank for inquiries. Rear sprocketed tank makes us think KV, M26, etc....or you have your tank terms confused. Could be a Tiger? Check to make sure there is nothing stuck in the wheels, sprockets or idler. Is the track too long/slack?. What are you driving it on(grass, dirt, floor)? Stay away from small gravel/rock & wood chips. Is your "Sprocket" ( I'm betting it is an idler by your description) loose, broken or misaligned. It is not adjustable so make sure all the wheels are aligned and running true. Flip it over and use a ruler to check it w/o the tracks on. Make sure the gearboxes are tight too and not wobbling. Also look for loose bent track pins or bad/bent links. Hope this helps. Bob