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Old 08-30-2001, 10:56 AM   #46
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not sure on the siz of reedy comms though
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Old 08-30-2001, 11:08 AM   #47
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This whole comm size thing is still pretty new to me. I didn't start cutting my own comm until this season. All I know is I wasn't happy when that strip appeared in my comm and I didn't know why. O'well I should be able to buy a new comm soon.
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Old 09-06-2001, 01:26 PM   #48
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Can someone give a FDR for a Peak Spifire? My LHS had one of these along with the trinity motors but i wont run trinity.
Thanks
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Old 09-06-2001, 01:57 PM   #49
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Start out around 6.8-7.0 and gear higher or lower from there. You should be able to gear it like the guy next to you at the track.

Why will you not run Trinity?
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Old 09-06-2001, 03:44 PM   #50
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Trinity to me seems to be all about the money, not about the racer. I have never really liked their stuff and this dates back to 1986. I would just rather run something else if there is a choice.
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Old 09-06-2001, 03:45 PM   #51
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oh, and thank you for the ratio's
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Old 09-06-2001, 03:50 PM   #52
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Jack Smash-1986-man thats along time to carry a grudge! At least you admit you don't like their stuff instead of just saying everything they make is junk.

By the way-Every company that isn't all about money has already gone out of business! You go into business to make money, thats the whole idea.
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Old 09-06-2001, 03:52 PM   #53
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Jack Smash-if you don't want to do the Trinity thing have you tried a Fantom MVP? I haven't had the best of luck with mine, but some guys have done well with them.
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Old 09-07-2001, 06:51 PM   #54
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Default Couple of Motor Questions...

Hey All,

Got a few questions for you guys...

#1. How do you know when your brushes need to be changed, is it a color thing??? wear?

#2. Similiar, how do you know when to cut your comm??

#3. I heard one racer say he "dips" his motors when he breaks them in, what is he talking about???

#4. Comm Drops: Do they really increase you motor output considerly and do they adversly effect motor, comm, brush life?

#5. Springs: How must of a difference do they make, I had heard you should run a stiffer spring on the positive side then the negative side...is this true??? if so, why doesnt that unbalance the motor???

Thanks guys for any answers!
John
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Old 09-08-2001, 08:23 PM   #55
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1. i replace my brush when they wear down to about 3/4 of the original length. also, replace them sooner if you feel that the motor seems to have lost power. this may be due to overgearing and the brushes wear prematurely.

2. to prolong motor life, i cut the comm regularly, after about 10-15 battery packs. you can get away with cutting it even later but the cut will be too deep and it is better if you just cut the comm a little at a time. it is also better if you replace the brush after cutting the comm. however, if the motor was overgeared or seems to have lost power, cutting it sooner may fix the problem.

3. your friend probably dips the motor in water to break in the brushes of sealed endbell motors. i also water dip sealed motors to clean them, but i only dip it for about 5 - 10 seconds and i use a 4-cell pack.

4. im not sure about comm drops. i just use them as a lubricant when cutting the comm or when breaking in brushes. i dont really use them when running.

5. i dont have a dyno so im not sure how the springs affect the motor's performance. i bought a "dyno tuned" chrome rs stock and it has a stiffer positive spring and a softer negative spring. i think a "regular" chrome rs stock has springs with similar tensions. so the springs do improve performance, i just dont know if it improves rpm, torque, etc.
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Old 09-08-2001, 08:33 PM   #56
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Use comm drops on breaking in, it aids in break in. I replace brushes every two racedays (8 races) and between days I re-serrate them. You should cut the comm after about 6 runs, I do it after 4.

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Old 09-08-2001, 09:46 PM   #57
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at a big race..i cut every run....for normal racing every two or three...
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Old 09-10-2001, 02:56 PM   #58
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What will happen with the GM3 arm in MVP?What rpm,torq,watts do you get then?

Thanx
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Old 09-10-2001, 03:06 PM   #59
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Smile stock motors

I have a P2k stock motor with ball bearings, super zapped magnets, and brushes that have been cut to 1/2 the thickness!
The bad thing is, I only cut it about once every 20 runs! The comm just doesn't look that bad until then.
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Old 09-10-2001, 03:26 PM   #60
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ball bearings? i'm assuming you don't race with this motor.
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