Sam James Cowl LUVIN'

A forum for the proverbial airport bum who just wants to talk about anything and everything related to flying. Introduce yourself here !!

Post Reply
User avatar
bullojm1
Chief Rivet Banger
Posts: 1374
Joined: Sat Mar 25, 2006 6:37 pm
Location: KDMW
Contact:

Sam James Cowl LUVIN'

Post by bullojm1 »

So far the James cowl has been a lot of extra work. Last night I needed to trim my baffles and wasn't looking forward to that task. I have seen all kinds of methods -- the most famous one being the paper-clip method where you look at how far down the cowl pressed the paperclip attached to the baffles to get an idea of what kind of space there was to work with.

It occurred to me that for the first few passes, if I could find a spacer to put around a thick black sharpie, I could reach my hand under the cowl through the inlet holes and mark on the baffles the contour of the top of the cowl. So I found a 3/8" nut threaded nicely to the thick black sharpie:

Image

I reached my hand under the top cowl and traced along the top of the cowl onto the baffles:

Image

Image

After I traced, I snipped the baffles and repeated. However, each time I went to stick my hand under the top cowl, it was closer to the engine and there was less room to work with. However, my skinny arms were able to squeeze into the space until the very end. Here is about 75% of the baffles trimmed:

Image


All of this took about an hour or two. Dare I say it was *fun*? I don't know if you can use this method with the Van's cowl since the inlets are smaller. This is finally one of the tasks with the James cowl that saved me time over the Vans cowl!
Mike Bullock
http://www.rvplane.com
RV-7 | Superior IO-360 | Whirlwind 200RV
Garmin GTN650 | GRT Dual Sport SX EFIS
Status: FLYING!

User avatar
dons
Class C
Posts: 873
Joined: Thu Apr 20, 2006 4:28 pm
Location: Waterloo, Ontario, Canada

Post by dons »

I'm missing something here, I thought the inlets on the SJ cowl were smaller than on the Van's cowl, so it would be easier to get your arm in there on a Van's version. :?

Good thing I'm still working on my wings so I have lots of time to get my mind around the SJ vs Van's cowl choice, but this kind of thing really helps, thanks.
Don Sinclair
CYKF
RV-7A (Fuselage)

User avatar
bullojm1
Chief Rivet Banger
Posts: 1374
Joined: Sat Mar 25, 2006 6:37 pm
Location: KDMW
Contact:

Post by bullojm1 »

Don-

They might be smaller when the rings are installed -- I didn't put the rings in when I had my hand stuffed in the hole for obvious reasons. Also, I think my ROUND arm fits better in the ROUND inlets on the James cowl, rather than the rectangular holes on the Van's cowl.
Mike Bullock
http://www.rvplane.com
RV-7 | Superior IO-360 | Whirlwind 200RV
Garmin GTN650 | GRT Dual Sport SX EFIS
Status: FLYING!

User avatar
dons
Class C
Posts: 873
Joined: Thu Apr 20, 2006 4:28 pm
Location: Waterloo, Ontario, Canada

Post by dons »

Thanks Mike, I didn't know that.
Don Sinclair
CYKF
RV-7A (Fuselage)

User avatar
aparchment
Class C
Posts: 522
Joined: Tue Nov 15, 2005 9:43 pm

causing trouble

Post by aparchment »

That Mike's arm is round?
dons wrote:Thanks Mike, I didn't know that.
Sorry, just stirring up trouble in an idle moment listening to a server architecture discussion.

User avatar
dons
Class C
Posts: 873
Joined: Thu Apr 20, 2006 4:28 pm
Location: Waterloo, Ontario, Canada

Post by dons »

I was wondering if someone would read it that way, glad I'm not the only one with a bent sense of humor around here :evil: .
Don Sinclair
CYKF
RV-7A (Fuselage)

Spike
Chief Rivet Banger
Posts: 4013
Joined: Thu Oct 14, 2004 8:40 pm
Location: Baltimore, MD
Contact:

Post by Spike »

We are all bent dude.
http://www.rivetbangers.com - Now integrating web and mail!
Current Build: 2 years into a beautiful little girl

Post Reply