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Engine Settling Measurement

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karolamy(at)roadrunner.co
Guest

Posted: Sun Aug 25, 2013 7:26 pm Post subject: Engine Settling Measurement

 	  Quote: 	
		  From you guys with Van's engine and cowl, and that have at least 50 plus hours of flying on your 10, how much did the engine settle relative to the fixed position of the cowl?   My 6 settled about 3/32 and that was about what I planned for - lucky!


	


Also were you successful with only 1/8th inch gap between spinner bulkhead and forward cowl as per plans, or do you wish you had increased this gap just a bit to facilitate cowl removal?



I'm certain I'll get quite a variety of opinions, but that's ok, please just let em rip!!!



Thanks Much,

Rich

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n223rv(at)wolflakeairport
Guest

Posted: Mon Aug 26, 2013 2:29 am Post subject: Engine Settling Measurement

My -4 settled a lot (~1/4") but my -10 did not settle any appreciable amount.



I'd leave as large of a gap behind the spinner that you are comfortable with for the reasons you gave.  I didn't build a race plane, I was more of "I don't want to scratch the paint and I want to be able to cowl it myself." 



YMMV

-Mike Kraus

RV-10 flying 150 hours



Sent from my iPhone



On Aug 25, 2013, at 11:21 PM, Karol Hansen <karolamy(at)roadrunner.com> wrote:



 	  Quote: 	
		   

 

 

> From you guys with Van's engine and cowl, and that have at least 50 plus hours of flying on your 10, how much did the engine settle relative to the fixed position of the cowl?   My 6 settled about 3/32 and that was about what I planned for - lucky!

 

 Also were you successful with only 1/8th inch gap between spinner bulkhead and forward cowl as per plans, or do you wish you had increased this gap just a bit to facilitate cowl removal?

 

 I'm certain I'll get quite a variety of opinions, but that's ok, please just let em rip!!!

 

 Thanks Much,

 Rich

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rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Mon Aug 26, 2013 7:18 pm Post subject: Re: Engine Settling Measurement

I built my cowl with prop spinner 1/8" higher. After i installed the .090" ss pins in the rear top hinge in place of alum .125" per instructions cowl dropped a little and rear gap enlarged. After 120 hours/20 mo my spinner is still about 1/8" higher than cowling. I think the engine settled less than 1/16" just like my cowl. I would recommend perfect alignment and not worry about it. 



I left 1/8" clearance between backplate and cowl. It works but entirely too tight. I would recommend 1/4-3/8".

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_________________
Wayne G.

bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Tue Aug 27, 2013 3:47 am Post subject: Re: Engine Settling Measurement

Mine settled around 1/8, may be just a bit more. I left 1/4 gap and glad I did.

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_________________
Bill
WA0SYV
Aviation Partners, LLC

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