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Old 01-16-2005, 06:27 AM   #16
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yes my motors run hot. hot enough that you dont want to touch them sometimes after a run.
both the kisbey modifieds are virtually brand new as of racing today.

I dont race on foams, only rubbers. I have semi agressive throttle use.

Drivetrain is perfect. Smooth as silk.
Schotty, yes i run one.

If i can check the drive frequency, I will

Thanks for you're help.
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Old 01-16-2005, 06:50 AM   #17
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Tim_Gaukroger

You posted: run a pen down each section gap to fold down the edge.

Don't do this. Clean the slots with an exacto knife and run. If you run a pen down the slots you are actually distorting the copper causing the brushes to bounce witch causes more arcing on the brush. Hope this helps.
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Old 01-16-2005, 10:00 AM   #18
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arcing = burnt comms - too much timing, driving style (braking, pumping the throttle) overgearing, out of round comm, poor spring tension causes arcing which may lead to overheating. if you overheat too much it burns the brushes which damages the carbon molecules. on some cases it will overheat too much and cause the brush ends to crystalize.

you can deglaze the brushes by cleaning it with a comm stick. if it is too silvery or worse bluish it must be replaced.

you can get away with slightly bruned brushes on small races and practice runs. BUT on big races you must change it and use a new pair.

REMEMBER when you use brand new brushes ALWAYS CUT THE COMM.

one more thing that you might be overlooking is that your springs may be too soft or worn out try to replace new springs. or your timing might be too high.

this is just my 2 cents. im not trying to say the other posts are wrong. just wanna help out. who knows the answer might be 2 posts combined.
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Old 01-16-2005, 10:27 AM   #19
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Ditto what striker said.
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Old 01-16-2005, 02:37 PM   #20
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thanks for the very useful info guys. I'll give the tips a shot and see how I go.

Tim
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Old 01-16-2005, 03:03 PM   #21
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Your problem is 99% probably poor spring tension. You must run really hard motor spings and run about 12-14 degrees timing.
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Old 01-16-2005, 03:49 PM   #22
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the springs on the Kisbeys are considerably soft.

The orion's I've been using std brushes which i think are medium hards.

Tim
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Old 01-16-2005, 04:13 PM   #23
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Your springs on the Kisby should be 1 down from the hardest you can get. Probably chrome coloured ones. I am not sure about the orion motors as i have never run one. The Reedy motors are better.
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Old 01-16-2005, 06:16 PM   #24
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Hey Tim,
You still using a spool and braking into corners?
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Old 01-16-2005, 06:56 PM   #25
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nar kempy i've been running the spool and no brakes since templestowe.
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Old 01-17-2005, 06:47 PM   #26
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the CS silver, LRP, Plutonium brushes leave a greyish silver finish on the comm after the run, its what they do. Also low wind mods a bad on the comm, fact of life.
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Old 01-17-2005, 06:58 PM   #27
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yea i know they leave a silver finish on the comm. but its still clearly burnt.

I expect more then 1x run from my motors before the comm is badly burnt, be is 7 8 or 9 turn.
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Old 01-17-2005, 07:05 PM   #28
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Another thing to check is your armature. I am not sure what Kisbey does for balancing, but I had a motor fling some epoxy off itself during practice, and when I ran it in qualifying, it sounded kinda off and the motor got very hot and the comm very discolored. Check to make sure nothing like this has happened to your armature. But like everyone said, check your spring tension, sounds like too light. Trinity Purples should be fine. The yokomo based mod won't get more than 1 to maybe 2 runs before it needs to be cut. The V2, however, should be able to be run at least 2-3 times with sprint brushes in it. Run hard springs in the V2 motor.
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Old 01-17-2005, 08:08 PM   #29
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are you running the brushes in before you hit the track?

2 volts at low timing till they're totally seated right.
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Old 01-21-2005, 02:39 PM   #30
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yea I seat them fully with no timing.

what's the chances of the speedy i use causing my comms to burn badly? I run a Gm Sx9. Any thoughts? Are some speedys better than others.

Cheers, Tim
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