As I have mentioned recently my new turbo quiets my 13b = significantly. My Honda Shadow Saber motorcycle is n= ow louder. I could actually use my cell phone while in the plan= e. In fairness, I did tell the caller, my mom, to hold on a sec while I walked back into the hangar....but it IS quieter and I do= get the kewl sounds of the turbo/BOV .....= zoom zoom zoom ....bbswooooosh

I wish I could help with a good single source for or turbo info. = The guys at www.turbocharge= rs.com were helpful both on the phone and in person.

I was about to state what John just said about the compression, b= ut he beat me to it. I am using the standard low compression rotors t= hough.

I am running 3lb boost and the engine seems to be p= roducing "scarey power"...but it could just be me.&= nbsp; 3 lb boost, at 34 MP and just over 6300 rpm WOT . R= Db 2.17 Redrive .

Chris Barber

Houston, GSOT

From: Rotary motors in aircraft [flyrotary= @lancaironline.net] on behalf of Rob [rob@mum.edu]
Sent: Tuesday, June 22, 2010 9:05 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] TurboCharger as a muffler

Hi everyone,

I am preparing my Bruce Turrentine 20B= hybrid engine for my BD-4. As I am thinking about all the detail= s it occured to me that a turbo would be a great muffler based on the = experience of those on this list who have them. It turns out that the price of a good turbo has come down to the point that i= t is almost as cheap as it would be to fabricate a good inconell exaust sys= tem. Then I can use it for boosting the engine too.

Is it reasonable to think like this? W= hat do you all think of this proposal?

The only problem is that my 20B has th= e high compression 9.7:1 rotors and I'm concerned about detenation. Is= it possible with the right components to maintain sealevel pressure o= n take off at full throttle and then maintain 30" MP as I get higher?

I have yet to figure out what componen= ts I need to do all this. I have been reading as much as I can about turboc= harging but I can't seem to get good answers to the above questions. = Does anyone know a good place to go to learn more about turbocharging for aircraft or how to select components for a sp= ecific mission?

I would appreciate any comments or cri= ticism on my musings. Brief or extensive coments are welcome.

Thanks everyone.

Robert Bollinger

Currently flying a BD-4 with a Ford V6=

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