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Can a lehner 2250/10t (1183kv) pull this combo
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crazyjr
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Can a lehner 2250/10t (1183kv) pull this combo - 05.21.2008, 03:50 AM

I was playing with BrianG's speed calculator Thanks Brian, its a great dream tool) and i am thinking of building a speed MT. I don't know if it will ever compete, but you never know, it may come to the east coast. Here is the setup i run on the calculator:

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 25
Total Voltage: 29.6
Motor KV: 1183
Tire Diameter (inches): 5.6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 1.76 : 1
Total Ratio: 5.82154 : 1
Tire Circumference (inches): 17.59 inches (446.86 mm)
Total Motor Speed: 35016.8 RPM
Vehicle Speed: 100.21 mph (160.97 km/h)
Effective Speed Rate: 3.39 mph/V (5.44 kmh/V)
Estimated Adjusted Speed: 86 mph (138 km/h) - 14% loss
Effective KV Value: 1183
KT constant: 1.14 oz-in/A

I know the 2250 is a frighteningly powerful motor (center diffed Twin Force and still wheelies) What i want to know is, Can it pull the underlined ratio with approx. 5.6" MT tires? I didn't figure in ballooning in and replaced the current diff(ofna/51 spur) with a hot bodies/kyosho 44 tooth spur. in the figures. I figured this on 8s lipo's and 3.7v per cell

This is being theorized around a Kyosho Twinforce, with a center diff (one of the ones sold by Promod a while back) Anyonw with lehner 22 series experience prefered, but open to all opinions

BTW the current setup with an MGM 16018 pulled 2584watts peak with 6s lipo's geared for 49mph, current gearing is 19/51


Work because i gotta, play because i wanna

People here hate Nitro, I love it. I start it, run it about 50 ft from me and it dies, I go after it. Perfect exercise

Last edited by crazyjr; 05.21.2008 at 03:57 AM.
   
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