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Gap between governor and upper cowl ramp (IO-540)

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Tim_Lewis(at)msm.umr.edu
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Posted: Mon May 29, 2006 11:37 am Post subject: Gap between governor and upper cowl ramp (IO-540)

Listers,



Attached are a couple of photos from my RV-10.  One shows the governor, 

the other shows the cutout for the governor in the upper cowl ramp.  I 

have gaps all around the prop governor between the governor and the ramp 

cutout.  This will permit air to flow from the high pressure side of the 

cowling to the low pressure side through the gaps.



Have others encountered similar geometry?  What, if anything, have you 

done to reduce the leakage?



Thanks,



Tim Lewis

-- 

Tim Lewis -- HEF (Manassas, VA)

RV-6A N47TD -- 830 hrs

RV-10 #40059 under construction

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Tim(at)MyRV10.com
Guest

Posted: Mon May 29, 2006 2:30 pm Post subject: Gap between governor and upper cowl ramp (IO-540)

Yep, there needs to be clearance for that arm to travel with the cowl

on.  I suppose it would be possible for someone to go into depth and

put rubber seal around the ramp area,  but I didn't and doubt that it

has a lot of consequence.  I suppose you could also mold in a cutout

with clearance around the governor and have it seal on the backside.

I can't say this wouldn't be great.  I just doubt it's necessary.

Basically, as long as that arm doesn't hang up, I think you've got

it where it needs to be.



Tim Olson - RV-10 N104CD - Flying

do not archive

Tim Lewis wrote:

 	  Quote: 	
		   Listers,

 

 Attached are a couple of photos from my RV-10.  One shows the governor, 

 the other shows the cutout for the governor in the upper cowl ramp.  I 

 have gaps all around the prop governor between the governor and the ramp 

 cutout.  This will permit air to flow from the high pressure side of the 

 cowling to the low pressure side through the gaps.

 

 Have others encountered similar geometry?  What, if anything, have you 

 done to reduce the leakage?

 

 Thanks,

 

 Tim Lewis

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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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flysrv10(at)gmail.com
Guest

Posted: Mon May 29, 2006 3:04 pm Post subject: Gap between governor and upper cowl ramp (IO-540)

I bridged the governer with the rubber gasket and use screws to attach

it to the alum. baffle so it could be removeable.  It is not perfect

but a little better than having it all open.

Do not archive.

On 5/29/06, Tim Lewis <Tim_Lewis(at)msm.umr.edu> wrote:

 	  Quote: 	
		   Listers,



 Attached are a couple of photos from my RV-10.  One shows the governor,

 the other shows the cutout for the governor in the upper cowl ramp.  I

 have gaps all around the prop governor between the governor and the ramp

 cutout.  This will permit air to flow from the high pressure side of the

 cowling to the low pressure side through the gaps.



 Have others encountered similar geometry?  What, if anything, have you

 done to reduce the leakage?



 Thanks,



 Tim Lewis

 --

 Tim Lewis -- HEF (Manassas, VA)

 RV-6A N47TD -- 830 hrs

 RV-10 #40059 under construction

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

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