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HelicopterEngines Plugs Mufflers Fuel › How to pump my os HZ 91 black haed
09-01-2009 09:49 PM  8 years agoPost 1
telix636

rrApprentice

Italy-Novara

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HI,
I've an Os 91 Hz black head and I want to modify for have more copple and power how I can do this?
Someone have a photo of modify engine or can help me?
Many thanks
MArco

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09-01-2009 09:52 PM  8 years agoPost 2
jsenicka

rrProfessor

Eagle River, WI

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You need a pump, and a pumped carb.
Wait for OS to come out with the new regulated carb designed by OMI later in the year. Then you just need a new carb, a backplate tap and a one way valve

Jim Senicka
Team Manager, GrandRC Flight Team

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09-01-2009 09:59 PM  8 years agoPost 3
Ghostrider

rrElite Veteran

San Diego, CA

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I have an Align 91H carb that is modified with a Cline mod that I would be willing to sell you. I also have a Viper head and a tapped backplate to go along with the carb if you wanted the full montey.

Huge power!

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09-02-2009 04:00 AM  8 years agoPost 4
rocket_33

rrElite Veteran

Mount Pleasant, Michigan USA

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The Cline system is a very good combination. On the HZ it is nice. In fact OS is even coming out with their own Cline Carb setup for this engine

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09-02-2009 10:23 PM  8 years agoPost 5
telix636

rrApprentice

Italy-Novara

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HI,
I'm so sorry with all you, I'm not intented to pump for put a pump in my os, but I thinking to modify for increase the power of engine!
Excuse for my poor english :-(
MArco

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