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Old 10-20-2009, 10:11 PM   #1456
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I'm new and dumb when it comes to on road cars. Could someone give me a suggestion on pinion gear size to run? Track is small-med and i'm giong to be running the stock 98 spur gear for now. Motor is a 17.5 trinity duo brushless.

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Try a 98/50.
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Old 10-21-2009, 05:55 AM   #1457
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I'm new and dumb when it comes to on road cars. Could someone give me a suggestion on pinion gear size to run? Track is small-med and i'm giong to be running the stock 98 spur gear for now. Motor is a 17.5 trinity duo brushless.

Thanks
The stock spur is too big for 17.5. Run a 78 spur. Your pinion will depend on the size of your tyre and what roll out you want.
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Old 10-21-2009, 01:42 PM   #1458
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I'm coming from 1/8 scale. To tell the truth I have no idea what roll out is.
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Old 10-21-2009, 01:55 PM   #1459
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I'm coming from 1/8 scale. To tell the truth I have no idea what roll out is.
Rollout is the amount the car will move forward for one revolution of the motor shaft. Check out the spreadsheet I posted before for figuring out rollout easily.

http://www.rctech.net/forum/5250090-post30177.html
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Old 10-21-2009, 02:04 PM   #1460
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Windows wont let me open that for some reason. Just can't catch a break using vista I guess.
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Old 10-21-2009, 09:43 PM   #1461
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Windows wont let me open that for some reason. Just can't catch a break using vista I guess.
ok try this one
http://www.rctech.net/forum/4792583-post5349.html

different link to the same target. i copied Joe's spreadsheet and made only two small changes, i 'painted' every fourth column and row grey for easier navigation, and added 2 columns that relate #teeth and diameter for spurs (i don't trust myself to recall what spur is installed). the only problem is that you need to print multiple copies for each spur size because people will ask you for one.

Last edited by avs; 10-23-2009 at 07:45 AM.
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Old 10-31-2009, 05:27 PM   #1462
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My current GenX layout. Only part still missing is the TQ Booster, which is in transit from TQ Cells. Ran it once already, but had to use a rec. battery. Just finished re-doing the layout to shorten wires, remove the rec. batt, and fix up the ride heights and make a special change to the rear suspension.
notice your long arm, what's the difference between the short and long arm?

tnx
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