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Old 06-10-2007, 08:38 AM   #1
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Default MOD MOTOR HELP

I have two motors that I need help with. The first is a P-94 8x2 and the second has BG or B6 (not sure) and it is a 8X1, QUESTION what degrees of timing do i need on these motors, and where should I start the gearing on them in a touring car. I run a komondo 19t at 6.25 final drive to give you a idea on our track sizes if this helps.
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Old 06-10-2007, 05:48 PM   #2
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Old 06-10-2007, 06:18 PM   #3
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cant really say Need your car and FDR to be more helpful .. I too run 19t ... you can chk here www.gearchart.com and get a chart to help you out with your gearing ...
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Old 06-10-2007, 06:27 PM   #4
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I have two motors that I need help with. The first is a P-94 8x2 and the second has BG or B6 (not sure) and it is a 8X1, QUESTION what degrees of timing do i need on these motors, and where should I start the gearing on them in a touring car. I run a komondo 19t at 6.25 final drive to give you a idea on our track sizes if this helps.
Well, one thing with the P-94 motor is I would narrow the brushes with a file down to a normal brush width. Not sure what the second motor is, other than the wind.

Both motors I would run about 12 deg of timing and start around a 8.5 FDR.

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Old 06-10-2007, 07:42 PM   #5
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I have two motors that I need help with. The first is a P-94 8x2 and the second has BG or B6 (not sure) and it is a 8X1, QUESTION what degrees of timing do i need on these motors, and where should I start the gearing on them in a touring car. I run a komondo 19t at 6.25 final drive to give you a idea on our track sizes if this helps.
Time the 8x1 at 10 degrees and time the 8x2 at 15 degrees and use a final drive between 9.80-10.00 Good Luck...
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Old 06-10-2007, 08:50 PM   #6
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thanks this is a great help, which way do i turrn the end bell as there are marks on both sides of zero?
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Old 06-10-2007, 09:09 PM   #7
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thanks this is a great help, which way do i turrn the end bell as there are marks on both sides of zero?
turn the end bell counter clockwise to Increase timing ... as turning clockwise will give you a Negitive timing ..
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Old 06-11-2007, 05:39 AM   #8
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So start at 8.5 final drive and work down from that? Is this for both motors?
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Old 06-11-2007, 05:58 AM   #9
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So start at 8.5 final drive and work down from that? Is this for both motors?
Try at least a 9.20-9.40 to start then take it from there but 9.60-10.00 would be good. Take Care...
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Old 06-12-2007, 01:31 AM   #10
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seem high? bbut I will try at 9.6 and work from there.
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Old 06-13-2007, 12:19 AM   #11
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I had a patise with the p-94 today gearred it at 9.38 at 15 degrees, it was very slow my 19 turn would be quicker, run it for more than 5 minutes and the motor was just starting to get warm. Motor didn't even sound like it was working along the straight. Any sugggestions?
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Old 06-13-2007, 02:47 AM   #12
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Make sure the commutator and brushes are good, and try the gearing at 10.00, if it doesnt sound like its working hard its not going to give you a lot of speed.

Modifieds are geared for acceleration, so dont be suprised with the ratios.

Ask around at the club for gearing advice too,as said before, its a bit difficult to suggest a ratio without knowing the track
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Old 06-13-2007, 08:58 AM   #13
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Make sure the commutator and brushes are good, and try the gearing at 10.00, if it doesnt sound like its working hard its not going to give you a lot of speed.

Modifieds are geared for acceleration, so dont be suprised with the ratios.

Ask around at the club for gearing advice too,as said before, its a bit difficult to suggest a ratio without knowing the track
I'm with you on that on...
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Old 06-20-2007, 04:24 AM   #14
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Could someone please tell me what a 8x1 motor should rev at putting 4v into the motor?(I know ever motor is different, just the average rpm's across a couple of different motors)
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Old 06-20-2007, 07:36 AM   #15
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Could someone please tell me what a 8x1 motor should rev at putting 4v into the motor?(I know ever motor is different, just the average rpm's across a couple of different motors)
An 8x1 should rev about 33,500rpm-37,000rpm @ 5.0v. I hope this is helpful to you. Take Care and Good Luck...
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