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Post by nosubfor3 on Apr 25, 2011 15:15:21 GMT -7
Ok I have had this problem before and can't seem to get it fixed. I have a couple of cars that kick sideways when they stop. T-jets and four gears.I have heard it is brush tension to tight and or one magnet is stronger than the other. Has anyone fixed this problem if they had it? Also I have a G+ that always deslots at take off. Has any one had this problem?  |
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Post by Eagle Racing on Apr 25, 2011 16:20:27 GMT -7
Reduce your pickup spring tension on the G+, make sure they are equal. Just put the spring between your thumb and index finger and squeeze a little. Do the rear wheels rotate easily on the other two?
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Post by nosubfor3 on Apr 25, 2011 17:08:24 GMT -7
Understood on the G+. The other two have brand new NOS axles and free wheel great with no gear plate in the chassis.
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Post by Eagle Racing on Apr 25, 2011 18:41:41 GMT -7
Put the other two together. Then check that the rear wheels rotate easily with no binding. If you have another car that does not do this compare the two.
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Post by 440gtx on Apr 25, 2011 20:43:08 GMT -7
Ok I have had this problem before and can't seem to get it fixed. I have a couple of cars that kick sideways when they stop. T-jets and four gears.I have heard it is brush tension to tight and or one magnet is stronger than the other. Has anyone fixed this problem if they had it? Also I have a G+ that always deslots at take off. Has any one had this problem? Do you have the shutdown area of your track wired for dynamic braking? If you do, one possibility is that the dead short created in your armature by the dynamic brake is overcoming the traction that your tires are providing. That would lock up your rear wheels causing the car to skid. All of my stock tired t-jets skid to a stop. In fact some of my narrow silicone tired ones do too. As far as too much brush tension goes, that's pretty hard to do on a drag car. I also don't put much stock in the idea that mis-matched magnets would cause the tires to lock up. Just my opinion! |
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Post by tjetdennis on Apr 26, 2011 3:50:00 GMT -7
I have had problem on high performance tjets & dynamic breaking. The aramature pinion would break loose somtimes even when solder to the arm. I have not tried the tools for closing the hole or using a bearing for the same reason.
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Post by nosubfor3 on Apr 26, 2011 4:09:39 GMT -7
Matt I do not have dynamic braking. Eagle raceing , When I assemble the gears on the gear plate of the 4 gear chassis things spin free until the larger gear is installed. Keep in mind these are all NOS Aurora gears. Also would to tight of a gear clamp or a warped gear plate cause the slide?
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Post by 440gtx on Apr 26, 2011 4:26:37 GMT -7
have you tried different idler gears? I have run across a couple large idler gears that were a little too large. They were hard to press into place and I could hear that it was bound up when I put power on it.
Have you tried removing the magnets and brushes, installing all of the gears and spinning it that way? If the gears are ok it should spin smoothly.
Matt
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Post by Eagle Racing on Apr 26, 2011 19:08:44 GMT -7
Anything to tight or warped is never good. A comment to what Matt says, which the idler gears from a car you know is good and see what happens.
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Post by Eagle Racing on Apr 26, 2011 19:11:58 GMT -7
One other thing just because the axle is brand new doesn't mean it is not bent. Chuck it up in your dermel if you have one and check it. When you turn it on if it's bent you will see it, run it at different speeds to check for wobble.
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Post by Bananasmoothie1975 on Apr 29, 2011 22:55:41 GMT -7
An off centre axle will cause a car to skip sideways on braking. Deslotting on takeoff can often be simply wheelstanding off the line - say hello to wheelie bars  (assuming ya don't have them... otherwise, beats me lol) |
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