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Old 06-13-2003, 09:28 PM   #961
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Hey guys quick question...

If I have a stock motor that I plan to run in Touring car, if the motor on the dyno seems to be more of an RPM motor then torque, would you go up or down in gear...

If it matters I am running a TC3 with 64 pitch, 100 spur...I am currently at 36 pinion (6.8 gear ratio)

Thanks in advance...
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Old 06-13-2003, 10:22 PM   #962
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Quote:
EVAA-- Keep that p2k2 in the 6.6-6.7 range and you will see a difference!! Hope this helps--AL
i run my monster at 6.1-5.7

try p2k2 at around 5.9
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Old 06-14-2003, 12:15 AM   #963
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TigeRyan, how big is the track you run on? Does it have some long straights & sweeping corners, or is it smaller & tight, or something inbetween? The type of track is(IMHO) the single biggest factor in how you determine your car(& motor's) gearing. But if it helps any, I can say that I run my TC3 on a medium/small track with a decent balance of straights, sweepers & technical sections(average lap times in regular stock is about 10 seconds, in Expert Stock the times come down to the low 9's), & on it I gear my Monster at about an 8.6:1 final(that's a 100 tooth spur & 29 tooth pinion). Seems to be very close to right for that motor(& of course, it is a high-rpm motor). If you can give us some info on your track(& let us know just which motor you're talking about), we might be able to give you a decent starting point....
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Old 06-14-2003, 12:20 AM   #964
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Default Too Hott?

I just picked up a Monster Stock for my TC3. I ran a 72 spur and 25 pinion. The motor temp was 193.5 degrees after a 6 minute run.
Is this too hott? What spur/pinion combo works best for this motor.
I here 6.9 is good. I think with the tc3 that is 72s/26p

I dont know, would ya help a rookie out?!?

Thanks
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Old 06-14-2003, 06:43 AM   #965
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for electric motors you cant really tune them to run within a certain temp. range like you can gas engines. but i would say close to 200 deg. is too hot. just make sure you are not discoloring the brushes or comm. gear the motor accordingly so that it tops out 3/4 or a little past down the longest straight on your track. this would be the best procedure since there is no optimal gearing combo for any motor. you will probaly need to gear the monster a couple of teeth lower than you would other motors you have run at your track. last time i ran stock was in carpet season so i cant help you out. hope this helps.
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Old 06-14-2003, 02:50 PM   #966
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my monster stock just got fried this afternoon, was running 128 spur 32 pinion on my G+...

any comments on why this happend?
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Old 06-14-2003, 03:01 PM   #967
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I am running on a unprepared Parking Lot track, medium size, but usually pretty open and non-technical...but the layout does change from week to week...

The motor is a Monster Stock....

Thanks!
John
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Old 06-14-2003, 06:36 PM   #968
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Quote:
Originally posted by Tom
i run my monster at 6.1-5.7

try p2k2 at around 5.9
how hot does your motor get?
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Old 06-14-2003, 06:43 PM   #969
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how low have you gotten the monster to be at without frying it?? how hot does it get?
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Old 06-14-2003, 07:29 PM   #970
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Quote:
Originally posted by highwayman
my monster stock just got fried this afternoon, was running 128 spur 32 pinion on my G+...

any comments on why this happend?
It sounds like you were overgeared... But this is just my perspective.

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Old 06-15-2003, 12:04 AM   #971
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Ok, TigeRyan, if it's about the size I'm thinking of(kinda like the one I run on), then I'd suggest you start conservatively, with a bout a 7.8-8.0:1 final(start with a 31 or 32 tooth pinion), & try a run in practice. Pay particular attention to what part of the straights the car tops out on(you may be able to hear it since it's a TC3, I can with mine), ideally I'd prefer it to top out about 80-90% of the way down the longerst straight. If it doesn't seem to top out, then maybe you're still overgeared, or if it happens too quickly, then you can go to a bigger pinion. Just go up or down 1 tooth at a time until the car "feels" right, & then pay attention to how it does out of corners, if you feel it bog down or if it accelerates well & make further adjustments if neccessary....
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Old 06-15-2003, 06:03 AM   #972
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Quote:
how hot does your motor get?
about 40-50 degrees C at 6.1

when i ran at 6.5-7.0 the motor was cooler then my tires at the end of the race

air temp is around 10-15 degrees C (race at night and its winter)

but my orion core runs at 90 degrees C
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Old 06-15-2003, 08:47 AM   #973
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Default Electric Newb

Hi there,

I am pretty new to electric touring and intend to run a stock motor on my Xray T1 which i bought 2nd hand. I know nuts about the gearing ratio between the spur and pinion. I have this brand new Tamiya Dyna run racing stock motor. Can someone please tell me how many turns this motor is and wat no. spur and pinion gear i should use? Thanks for any advice in advance. Cheers.
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Old 06-15-2003, 01:35 PM   #974
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That dyna run stock is 23x1. Gearing depends on track, temperature, etc etc. I'd probably start around high six low sevens then adjust
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Old 06-15-2003, 02:55 PM   #975
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diesel i would go out and buy yourself a rebuildable stock motor like a p2k2 or monster stock. Much less hassle...
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