If anybody needs the MM tube dimensions let me know.
The motor plate and welding cups are off the shelf.
See the bottom of the first page on the web site.

Paul Lamar

Paul,

Do you have 3D models for the 13B you would like to share with me?  The more
models you have the better.  I am using SolidWorks to design a custom
aircraft around the 13B.  I have not decided if I need turbo or not.  I
really only need 200 HP.  Thank you!



Best regards,
Glen DeBusschere

I use Rhino.

Paul Lamar

Paul,

I understand.  Can you output to *.STEP or *.IGS format?

-Glen

Yes.,
Does your ISP accept zip files? These files are generally too big to email
unless zipped.

Paul Lamar



Paul,

Yes, it does.  I have Cox Communications and they are good about that.
However, you can send it also to my other account: glen@cleverbugdesign.com
- either one should work - or you can send it to both.  Thanks!

Glen

OK try this.

Paul Lamar

Paul,

Thank you.  I was able to open it and import it into my assembly.  This
gives me a really good idea for space requirements.  I am designing a
tractor-prop configuration but I guess the firewall forward spacing would be
similar as the Cozy one you sent me.

Thanks again!

-Glen

I got lots of tractors.

If you give me the dimensions on the firewall hard points, the thrust line
position and the distance to the prop flange I'll do a lay out for free.
There are several options for rear mounts. The best way is to build it into
the oil pan.

Tractor or pusher.

Most airplanes have limited space under the engine for cooling systems.
Needed for tandem and pusher designs.

Side by side tractors the cooling system can vertically go on the cool side
of the engine. The left side. Then you can use the stock cowl openings.
Always put the diffuser between the hot engine and the rad. A one degree
increase in under cowl temperature will result in a 1% loss of cooling. In
other words make sure the rad gets the coolest air possible.

The great thing about the rotary
compared to other water cooled engines is the small size allows putting the
cooling system under the cowl. All the liquid cooled WW II fighters had the
cooling system mounted someplace else.

Mike Wills RV4 is one of the best tandem layouts I have ever seen.
It cools extremely well. It never got over 168 F while Dave Leonard ran it
up for about 30 minutes. The oil was cooler than the water.
The narrow cowl has less internal volume than a stock RV4 cowl with cheeks.

Mike cleverly extended the back of the oil pan back about 5 inches behind
the engine as the front of the oil pan must come to a wedge so the water rad
diffuser has the room it needs.

The gussets in the motor mount are unnecessary and the rear mount could be
simplified but all and all it is one of the best so far.

Send me a rendering of yours and I'll give you a free critique :)

Paul Lamar


Paul,

Thank you.  It is a tractor side-by-side 2-seater.  I have seen some planes
that have one inlet for radiator and the other for oil cooler.  I was
thinking this would make the most sense because I have the width.  I will
send you renderings when I get it fleshed out a little more.  Thanks again!

-Glen


Isn't Mike's RV-4  cooling layout very similar to the P-40 Warhawk?

Matt-

Similar but the big difference Mike uses the more efficient
Kays and London wedge diffuser and a much lower drag heat
exchanger.

Do you have my book "How to Cool Your Wankel" news letter subscriber
special at $30 plus $5 for shipping and handling in the US.
Cash only. Sends it certified mail if you wish which is cheaper
than registered.

830 East Santa Maria St.
Suite 303 very very important
Santa Paula CA 93060

Paul Lamar