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Old 04-22-2004, 10:09 PM   #1 (permalink)
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Default Best 90 motor
Let it fly. Think about peicing a 90 machine together. Probably the Extreme. What 90 motors you guys like and why?
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Old 04-26-2004, 06:45 PM   #2 (permalink)
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I put a Viperhead on my ys91 this weekend and it was pretty much unstopable!
The YS has been using a pressurized system for many years that is proven.
You don't use exhaust pressure (which eats up main tank fuel line quick)
PLUG and PLAY with muffler and 25-30% nitro
Needles Work and are easy to adjust
Doesn't require much adjustment..ie...set it and forget it unless temp swings are drastic
Just kick's ass nothing more to say.
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Old 04-26-2004, 07:15 PM   #3 (permalink)
 

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I agree. For me it is YS all the way!
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Old 04-26-2004, 07:27 PM   #4 (permalink)
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Go to this thread: https://www.helifreak.com/viewtopic.php?t=823

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