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HelicopterEngines Plugs Mufflers Fuel › TT 39 with Hatori 415 pipe.
10-19-2004 11:26 AM  13 years agoPost 1
Dixie

rrApprentice

Somerset, England

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Flew my Raptor 30V2 with a TT39 and a Hatori 415 pipe for the first time this weekend, what a combination Loads of power, got throttling and a steady idle when put into an auto. Well impressed with the TT39, thought I was going to throw it away and get an OS, but no need its fine and all the power I need.

Running on 15% Coolpower, no governor.

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10-19-2004 03:06 PM  13 years agoPost 2
Raptor_in_Swede

rrApprentice

Stockholm /Sweden

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Hi Dixie
Thanks for the info about the Hatori 415 tuned muffler.
I have ordered one for my Raptor 30/TT39 as I am very satified with the 415´s big brother 544 on my TT50 engine.
It shall be interesting to see if the TT39 engine will run better and more powerful on the Hatori 415 compared to the Weston Onepiece I am using now.
I know that the backpressure on the the new large Hatori tuned muffler(544 and 415) is significantly lower than the backpressure on the Weston onepiece pipes.

Raptor 30V1/TT39H/Hatori#415/GY401_9253
Hirobo GPH GT/TT50H/Hatori #544/GY401_9254
RD8000

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