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HelicopterEngines Plugs Mufflers Fuel › Which pipe for the new 91HZ-R 3D Speed?
08-02-2011 05:37 AM  6 years agoPost 21
sumonzu

rrApprentice

San José - Costa Rica

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Finally I have tested the Hatori SB-21FH Torque Power on the 91HZ-R 3D and it works perfectly! I strongly suggest it if you want a smooth run plenty of power and no vibrations despite the size.

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08-02-2011 02:54 PM  6 years agoPost 22
rilopez825

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Pembroke Pines, FL

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Sumonzu

I fly the OS 91hz-r w/ the OS power boost pipe.
would it make more power with the Hatori enough to make the change?
also what head speed are you flying at? I am currently at 1900.

Richard

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08-02-2011 03:06 PM  6 years agoPost 23
Mike Fortin

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USA

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The Funtech B301 903D is also an option. The Funtech runs extremely smooth, and makes great power and has good mid-range transitions.

It's another high end option that's been working well for lots of people but everyone has their preference.

Have Rotors, Will Fly!

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08-02-2011 05:05 PM  6 years agoPost 24
sumonzu

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San José - Costa Rica

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I'm running at 1950. I bought the engine wihtout the muffler. If you have the OS muffler I would stay with this.

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08-02-2011 05:59 PM  6 years agoPost 25
Mike Fortin

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USA

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The Power Boost pipe is a good one, if you've already got it the gains from switching to another pipe would be very little if at all.

Have Rotors, Will Fly!

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HelicopterEngines Plugs Mufflers Fuel › Which pipe for the new 91HZ-R 3D Speed?
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