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Old 11-13-2003, 08:11 PM   #106
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If you are on rubber tires, just go with the gear ratio that people use at your track. Just about every body will tell you what they run.

Then gear a bit taller for a torquey motor or shorter for a speed motor. Ultimately, it is based on motor temp. Geared properly, your motor should be from "warm" to "hot", but not hot enough to burn. You should be able to hold your motor in your hand without discomfort. You should also be able to see on the track how you are doing on speed. Main straight is the easiest place to see, but also look at corner exit speed and punch.

If you don't want to ask, or can't, I'd start with a rollout of about 1" to 1.2", or about 25 to 30 mm rollout.
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Old 11-16-2003, 09:16 PM   #107
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Ok everyone,

I found the money 1/12 monster stock setup. Putnam green/blue combo, green springs, and narrow the sides of the brushes as evenly as possible to the point where the face of the brush is a square. It's fast, trust me. I broke track record this weekend with my 3rd run on a 1/12 car! This is for a medium sized carpet track.

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Old 11-16-2003, 11:11 PM   #108
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Mike D
"Higher RPM on the 3 and 4.5 loads means the motor is spinning faster down the straight. The efficiency is also just a number calculated from power and amp draw. I find **amp draw** is much easier to understand then efficiency in figuring out what the motor is actually doing on the track. "

Since you're switching amp draw and torque as a way to look at areas of performance on track, how are you using the amp draw #? Would you be looking for a lower amp draw to indicate the better motor? Thanks for your help.
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Old 11-17-2003, 01:54 PM   #109
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Sands, thanks for the tip.
Quote:
Originally posted by sands
If you are on rubber tires, just go with the gear ratio that people use at your track. Just about every body will tell you what they run.

Then gear a bit taller for a torquey motor or shorter for a speed motor. Ultimately, it is based on motor temp. Geared properly, your motor should be from "warm" to "hot", but not hot enough to burn. You should be able to hold your motor in your hand without discomfort. You should also be able to see on the track how you are doing on speed. Main straight is the easiest place to see, but also look at corner exit speed and punch.

If you don't want to ask, or can't, I'd start with a rollout of about 1" to 1.2", or about 25 to 30 mm rollout.
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Old 11-17-2003, 01:58 PM   #110
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jzone, any brush/spring combo for the P2K2 Pro yet? If you got one let me know and I'll try to use it at Rain City this coming weekend. Thanks.
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Old 11-17-2003, 06:04 PM   #111
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TD, The P2K2 motor carrys quite abit of torque in them. Go with red springs all the way around with a 2mm. cavity on the green brush+ and a 1.5mm cavity on the blue brush-. This set up seemed to get better results for me. Get more grunt out of it by putting a purple spring on the positive. Give it a shot.

Sushi Boy, Good show buddy. There is another set up I'd like you to try out. when I get a chance I'll send a pair out to you. I was told this brush set up will kik on the other one.

Later

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Old 11-17-2003, 07:55 PM   #112
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Quote:
Originally posted by JPHRacer
His motors are also real expensive. I spent over $300 on 4 mod motors and 3 extra arms, and that was paying for the motors at cost. It wasnt cheap.
Are you the same DW that use to live here in PA. I don't think that $300 is all that expensive for 4 Mod Motors and 3 extra arms. I think that's pretty cheap actually since 4 $80 dollar motors equals $320 then 3 extra arms and the shipping and all. Not very expensive at all.

But then again... ah nevermind
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Old 11-18-2003, 02:13 PM   #113
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Quote:
Originally posted by jzone
TD, The P2K2 motor carrys quite abit of torque in them. Go with red springs all the way around with a 2mm. cavity on the green brush+ and a 1.5mm cavity on the blue brush-. This set up seemed to get better results for me. Get more grunt out of it by putting a purple spring on the positive. Give it a shot.

Jesse, thanks. I found a gearing that was surprisingly low but had great straight and corner speed. It was 8.05. What do you think? Should I gear the same with the brush/spring combo from above. I remembered I could've geared lower at the Slugfest. Thanks.
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Old 11-18-2003, 03:01 PM   #114
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Holy roll out Batman!
Go for it! Doesn't hurt to try

J
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Old 11-18-2003, 03:51 PM   #115
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Quote:
Originally posted by robk
Mike D
"Higher RPM on the 3 and 4.5 loads means the motor is spinning faster down the straight. The efficiency is also just a number calculated from power and amp draw. I find **amp draw** is much easier to understand then efficiency in figuring out what the motor is actually doing on the track. "

Since you're switching amp draw and torque as a way to look at areas of performance on track, how are you using the amp draw #? Would you be looking for a lower amp draw to indicate the better motor? Thanks for your help.
robk - Yes. If two motors are making the same power and same rpm, I'll take the lower amp draw motor any day. Don't forget that higher amp draw does more then eat batteries. Higher amp draw also creates more heat and motors make less power as the temperature rises. Heat isn't something that shows up on the dyno but it's easy to notice at the end of a 5 or 8 minute run.
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Old 11-18-2003, 04:49 PM   #116
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are the putnam green brushes the same as the old ones


some people arent super happy with em anymore....
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Old 11-19-2003, 01:30 AM   #117
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Quote:
Originally posted by jzone
Holy roll out Batman!
Go for it! Doesn't hurt to try

J
Good one, J! I'll definitely go for it!?!

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Old 11-19-2003, 12:25 PM   #118
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Calvin,
I'll check with Todd when he getts back from a race he went to attend. As far as I know the compounds are still the same. I haven't noticed any differences nor changes.

J
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Old 11-19-2003, 12:28 PM   #119
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Calvin..

The greens are still the same. As with all brushes there can be some differences between different batches so it is possible that there could be a batch that isn't quite as good out there right now.
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Old 11-20-2003, 10:29 AM   #120
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Calvin,

Are you gonna be racing at the Tri-cities race next weekend?
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