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Sam James Cowl

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norman96(at)telus.net
Guest

Posted: Sun Nov 15, 2009 9:43 pm Post subject: Sam James Cowl

How many people are flying with Sam James Cowls?

Is everyone happy?



Are they lighter than stock?

Are they faster than stock?

Do they cool enough?



Thanks,

Norman Hunger

RV6A Delta BC

Do not archive

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dcw(at)mnwing.org
Guest

Posted: Mon Nov 16, 2009 6:14 am Post subject: Sam James Cowl

A friend converted his RV-7A from Van's standard cowl to the Sam James cowl in hopes of improving his cooling issues.  Frankly he noticed no difference in cooling and about a 2-3 knot gain in speed.  So whether it was worth the effort is open to question.

 

 Doug Weiler

 RV-7 under construction

 

 

 

 Norman Hunger wrote: [quote]--> RV-List message posted by: Norman Hunger <norman96(at)telus.net> (norman96(at)telus.net)   

   

 How many people are flying with Sam James Cowls?   

 Is everyone happy?   

   

 Are they lighter than stock?   

 Are they faster than stock?   

 Do they cool enough?   

   

 Thanks,   

 Norman Hunger   

 RV6A Delta BC   

 Do not archive   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

   

 [b]

- The Matronics RV-List Email Forum -

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martin(at)gbonline.com
Guest

Posted: Mon Nov 16, 2009 6:14 am Post subject: Sam James Cowl

Norm

I am replying  directly to you rather than the list, because I do not have 

time to reply to dozens of email query's.

I have over 1000 hours with my James Cowl. I find that as a general 

statement it is 1 to 5 lbs heavier than the stock Vans cowl. (I have both)

They are on average  5 to 10 knots faster and they cool better. Actually, I 

have found that in the winter time (wisconsin) they over cool with the 4 3/4 

inch inlet rings supplied.  I remedied that by designing  and making

rings with a smaller inlet diameter (4 inch) for winter time use. I also 

made a set of 3 1/2 inch opening for operations below zere temps.

You may call me any time CST (at) 920 619 6968 (cell phone -let phone ring). 

Do not reply by Email, I only look at it occassionly .

Dick Martin

RV8 N233M

the fast one

---

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garrys(at)tampabay.rr.com
Guest

Posted: Mon Nov 16, 2009 9:18 am Post subject: Sam James Cowl

I have flown with the Sam James cowl and plenum on my RV7A since new.  Now 

250 hours.  Obviously I have no way to compare to "stock" Vans cowls, 

however based on general discussions with other RVers I don't think my plane 

is any faster nor does it run any cooler than stock.  Still, I'm pleased as 

I think the S.J. cowls look way cooler!



Garry Stout

---

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martin(at)gbonline.com
Guest

Posted: Thu Nov 19, 2009 7:27 am Post subject: Sam James Cowl

I converted to a sam James cowl and plenum chamber after approx. 500 hours 

with the Vans cowl.  The james cowl cools better, and my airspeed increased 

an average of 10 knots.  The down side is that you will need a propeller 

with a 2 inch extended hub.

I do not have time to discuss this on the internet.  I will be happy to talk 

to any of you via telephone. anytime. Call 920 619 6968.



Dick Martin

RV8 N233M

the fast one

----From: "Norman Hunger" <norman96(at)telus.net>

To: "RV List" <rv-list(at)matronics.com>

Sent: Sunday, November 15, 2009 11:40 PM

Subject: Sam James Cowl

 	  Quote: 	
		   



 How many people are flying with Sam James Cowls?

 Is everyone happy?



 Are they lighter than stock?

 Are they faster than stock?

 Do they cool enough?



 Thanks,

 Norman Hunger

 RV6A Delta BC

 Do not archive

- The Matronics RV-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?RV-List

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