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Old 02-14-2010, 12:52 PM   #121
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Quote:
Originally Posted by 2wdrive View Post
Wich brand/type cars do you have?

First for a guesed rollout anwser these questions:
48 or 64dp
motor brand
esc brand
track size
tire diameter

99% sure with a 10.5t motor you will need a smaller spur. Roughly between 68t and 81t (48dp) But not knowing the track size it is just guesing. For a big track the rollout would be roughly between 48 and 60mm depending on your esc and sensor/sensorless driving.

It doesn't make sence to just put a smaller pinion on when it is not the correct rollout for your motor/track size. If the rollout is too high or too low your motor will just get too hot.
The cars are pictured on page six of this thread ( post #86 )

Motor will prob be the Orion Vortex or the Novak I have.
No idea what ESC yet
Track is unknown. The track I bought these to run at closed down, might not even keep them.
The diameter on the rear tires is 65mm.

How do you get the rollout? kinda new to this class.
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Old 02-14-2010, 12:58 PM   #122
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tire diameter in mm x 3.1417 (PI) = A
A / spur size = B
B x pinion size = rollout in mm
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Old 02-14-2010, 01:02 PM   #123
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That gives me a rollout of 36.304...

16T pinion now
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Old 02-14-2010, 03:15 PM   #124
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this pinion is too small nearly in all situation. I think you must use a smaller spur, with this you put the motor rear and get a little more tration rear (the "weak point" of pan cars). I think a good starting point for roll out is 45 (But always depending the track and motor you are using), so you can calculate

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Old 02-14-2010, 04:23 PM   #125
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Quote:
Originally Posted by 2wdrive View Post
tire diameter in mm x 3.1417 (PI) = A
A / spur size = B
B x pinion size = rollout in mm
Pi is 3.141593
http://en.wikipedia.org/wiki/Pi
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Old 02-14-2010, 11:01 PM   #126
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Thanks for all the help so far. Does anyone know where I can find spur gears for this car? From what I have read, it is a knock off of a Corally. I'm not sure if I'm keeping the cars, like I said before the track I bought these to run on is closing, but there are rumors of another opening and I'd like to have them ready just in case.

It will most likely be a smaller or midsized track. So anywhere I can pick up a couple of cheap spurs would be great.

Thanks
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Old 02-15-2010, 04:50 AM   #127
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just a guess, but kimborough gears seem to work in most.. someone will correct me i'm sure..
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Old 02-15-2010, 07:49 PM   #128
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Get 64P (pitch) gears.
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Old 02-15-2010, 09:43 PM   #129
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Kimbrough gears are very good indeed, Robinson Racing spurs are also very good. But I wouldn't use 64dp gears in a Pro10 235. 64dp is simply too fragile for the power in these cars when used outdoors on a medium/large asfalt track. Stick to 48dp gears as they are stronger and will last much longer!!! 64dp is mostly used in 12th scale and WGT indoors...
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Old 02-16-2010, 04:32 AM   #130
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Have to agree.
Have been running 64dp since I had the car (2s 17.5 GT outdoor), but the recent weather has meant a lot of debris, and in the last month I have stripped 3 64dp gears, have now gone 48dp and so far not stripped a gear.
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Old 02-16-2010, 06:12 AM   #131
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Thanks for the advice. It has 48pitch on it now, so I'll prob stick with it. Plus all my pinions are 48.

Does anyone have anyextras they'd be willing to sell, or have a link to where I can find some?

thanks
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Old 02-16-2010, 08:05 AM   #132
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anyone tried running a 4.5 / 5.5 wind with a pro 10 and a 2s lipo? I am looking for a gearing for a LARGE track. talking 1/5th scale track. also starting asphalt tire sizes.. thanks (a bunch of 1/8th racers play around with these and keep up with the 1/8th cars on the straight). I want to play too lol
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Old 02-16-2010, 08:29 AM   #133
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Starting rollout for a 4.5 on a 1/5th scale track is around 32mm.
Best start with tires straight out of the box, as large as you can for more traction. Most tires come around 63mm rear 62mm front.

With a good setup you should be able to play with the top 1/8th scale racers.
Have fun and pictures please!
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Old 02-26-2010, 01:06 PM   #134
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Does anybody know who makes the body shell in the picture on post#86, it looks like a 235mm version of the Mercedes C9 1989 Le Mans winner?
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Old 02-27-2010, 06:37 AM   #135
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andy's c9 with seperate wing

isn't produced anymore,to my knowing.

But i know a shop ho has a new one or two on the shelf.
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