Paul,
I'm getting close to finishing my airplane, money is really the only
factor now, just have to get a prop, elt, transponder and Dynon, and
it's pretty much done (it'll never be FINISHED). I like my current cowl,
and I anticipate flying with it, but I think I could do a better job,
and so I'd like to build a new cowl from scratch. I'll do this after I
get the plane airborne. I've attached th dimensions for my cowl, I was
wondering if someone who has the ability could put this into a format
where I could cut templates every 2" from the firewall to build a plug
for my new cowl. I intend to make the plug out of stacked 2" foam. I
would like to make a female mold so I can build a few cowls, in case
anyone wants one. My firewall is not stock in that it is 8" taller than
stock, but this cowl could be easily cut down on the horizontal seam
that joins the top and bottom halves of the cowl. Also, the spinner is
16" dia, and the spinner face is 45 inches in front of the firewall,
rather than the 39 that is stock. But, that said, this cowl should be
able to be installed on an RV-4 with the spinner in the stock position,
as long as it has a 16 inch spinner.

Just three notes that might not be clear, and I apologise for the shoddy
drawings:

   1. The width of the firewall viewing from the top down is 25.5 inches.
   2. The thrust line is perpendicular to the firewall
   3. The firewall height is 37.25 inches

Is anyone wants the plot points for a STOCK Van's RV-4 cowl, I can also
provide those.

Thanks.
Brian Trubee

I would like the plot points for the stock RV4 cowl.

Paul Lamar ...No rotor no motor.

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