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Old 01-07-2013, 08:02 PM   #1
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Default Acme cyclone (self build) wheels tight to spin like brake is applied slightly


I got an Amce cyclone rc car for Christmas and have finished building it. The wheels should spin freely, I would imagine, but they are tight to spin, to give an example of how I mean, it feels like the brake is being applied slightly.

It is not a brake issue though as the brake disc has sufficient room between the brake pads.

I have tried taking the differentials (front and rear) out and rebuilding them but the 4 wheels are still rather tight to spin by hand. They do turn, but no matter how fast I try to spin any wheel, as soon as I let go the wheel instantly stops spinning.

Any ideas of what the problem could be?

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Old 01-08-2013, 12:14 PM   #2
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Any help would be appreciated
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Old 01-08-2013, 02:57 PM   #3
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Originally Posted by StephenIrwin View Post
Any help would be appreciated
Remove the side belt.
Check rear versus front.
If front is ok and rear is tight
Check clutch and 2 speed
If 2 speed and clutch are free
Check rear pullleys, belts may be too tight or lay shaft.
If rear is still binding.
Remove diffs and check each hub separately..

NOTE: there will always be some play in the wheel hubs, the wheels will have side movement to be free.
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Old 01-08-2013, 06:37 PM   #4
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I was impressed with 'Blis's' attack on the problem and I watched some 'Youtube' videos because I didn't know what an Acme Cyclone was. Some of the videos didn't lead me to believe that that car is much of a 'free-rolling' animal anyway. I just grabbed my brand-new HPI Sprint (belt-drive electric) and tried rolling it and now feel that the belt-drive cars have an inherent resistance that feels like the brake is dragging. Turning one wheel gets the diff. friction involved and pushing the car on a smooth surface got no 'coast' at all.

Good Luck
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