Thread: MMSA at ELDORA
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DAD (Offline)
  #10 7/30/12 5:09 PM
Originally Posted by Jrp4554:
My engine only has 2nd gear. I wonder if i can gear it high enough to work?


Sure no problem. gear for 100 mph at max rpm. Tire diameter X rpm of rear axle divided by 12. that give you feet per min.

60 mph = 5280 feet per min

100 mph = (feet per min X) cross multiply and divide

100 x 5280 = 528000

528000 divided by 60 = 8800 feet per min.

If your rear tire is 82" 's that is 6.83 feet per revolution.

8800ft divided by 6.83ft = 1288 rpm's for rear axle.

Max motor rpm = 11000 rpm divided by 1288 = over all ratio 8.5 to one. You can do that in second gear. Might have to slip your clutch a bit taking off.

Honest Dad himself

---------- Post added at 5:09 PM ---------- Previous post was at 5:05 PM ----------

Originally Posted by Midget18:
How many wings will collapse????

I like my engine, car, and wing so it will be parked in the shop

Posted via Mobile Device
Darned our wing has a big hole in it it will probably just blow up.

Honest Dad himself