REFLECTOR: Obtaining Repairmans Certificate - Static RPM

Brian Michalk michalk at awpi.com
Tue Mar 27 19:31:37 CDT 2012


Larry,

I just wrote an update.  With three washers, I get 2250, but I for the 
life of me can't remember my manifold pressure.  I'm strictly running 
28BTDC, so am losing some power there, and am also drawing air through a 
non-boosted turbo.

On my first flight I did see 3,000 RPM, so I don't want to remove any 
more washers.  Once I finish the development of the constant speed prop 
controller, I may remove the extra washers.

On 03/20/2012 11:20 AM, Laurence Coen wrote:
> With three blades and one washer I can get 2500 RPM static with my 
> Franklin IVO.  High speed taxi test 2600+ RPM.  In testing for max 
> cruse at 8000 ft I found a 2 KT increase from 2600 RPM to 2700 RPM and 
> no increase at 2800 RPM. If it runs good at 2600 RPM you're golden.
>
> Larry Coen
> N136LC
>
> --------------------------------------------------
> From: "John Dibble" <aminetech at bluefrog.com>
> Sent: Tuesday, March 20, 2012 10:58 AM
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Obtaining Repairmans Certificate - Static RPM
>
>> Brian, There's something wrong if you can't get high rpm with 3 
>> blades. What is your fuel burn rate at idle?
>>
>> John



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