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  #1  
Old 12-16-2002, 09:33 PM
wild03 wild03 is offline
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Custom gear ratios

Here's an idea for those with lots of torque. Slow taking off but should give you a higher top end for those land speed record runs.

http://www.geocities.com/wdiaz03/wild_ideas.html

I believe that with red Gears the ratio drops to a little over 2:1
I'll have to do the measurement again!
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  #2  
Old 12-17-2002, 05:59 AM
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ib311 ib311 is offline
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How do you measure ratios?
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Old 12-17-2002, 09:02 AM
wild03 wild03 is offline
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Quote:
Originally posted by ib311
How do you measure ratios?
Since ratio is just the number of turns one gear turns for every turn of the other gear, You can get a rough measurement by putting a small mark on the tire and a small mark on the motor pinion. Let's say on the 12o'clock position. Start turning the tire slowly until you reach 12o'clock again and count the number of turns the motor pinion makes. So one turn of the tires will give you a couple of turns on the motors.

With the blue gears for every turn of the tire I get exactly 4 turns on the motor hence 4:1 gear ratio. Red gears gives a little over 2 but I'm still gotta double check

You can also use the number of teeth on the gears and calculate the ratio but the other method will give you a good approsimation.
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