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Old 07-24-2009, 05:00 PM   #1
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Default Duo vs. Duo 2

So I'm in the market for a 13.5 motor and at our track the Duo motors seem to be the fastest. Question is which one do I get? Have any of you guys that have been running the Duo done any testing with the Duo 2?
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Old 07-24-2009, 06:47 PM   #2
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I would like to know also. I am looking to buy one of these 17.5 motors.
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Old 07-24-2009, 08:12 PM   #3
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The Duo 2 will allow finer timing adjustment on the motor.
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Old 07-24-2009, 08:17 PM   #4
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The duo 2 has timing adjustments from 10 to 30 degrees with the ability of doing it with the motor in the car by loosening 3 screws in the end bell nd turning the end cap. You also can change the timing in small steps instead of 10 degrees at a time like the original duo. Ive been running the new motor for a couple weeks now and they are very fast. Be sure to go down a few teeth when u put it in so you dont burn it up lol. Always good to be under geared and save a motor than be over geared and burn it up.
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Old 07-24-2009, 10:34 PM   #5
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Quote:
Originally Posted by thisguy2849 View Post
The duo 2 has timing adjustments from 10 to 30 degrees with the ability of doing it with the motor in the car by loosening 3 screws in the end bell nd turning the end cap. You also can change the timing in small steps instead of 10 degrees at a time like the original duo. Ive been running the new motor for a couple weeks now and they are very fast. Be sure to go down a few teeth when u put it in so you dont burn it up lol. Always good to be under geared and save a motor than be over geared and burn it up.
Is the only difference the endbell timing setup? Or does the motor have different properties as well? Does anyone have the Kv readings for both motors as this is usually the best indicator for the type of motor (rpm vs torque)
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Old 07-24-2009, 11:09 PM   #6
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The motors are very similiar. By running them on a phantom dyno the duo 2 is putting up a little bit better numbers from what ive seen. The new duo has more power coming out of the turns when ive been racing them and if geared right it cant be touched down a straight
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Old 07-27-2009, 02:05 PM   #7
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Ok that's good info, thanks.
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Old 07-27-2009, 02:09 PM   #8
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Dont know for sure... but from what i have heard, the only difference is in how the timing is adjusted. The rest of the motor shoudl be the same.
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Old 07-27-2009, 03:45 PM   #9
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rotor is different too.Stronger.
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