> > > Hello Paul,
    > > >
    > > > I'm searching for a RV-4 renesis engine mount.
    > > >
    > > > Jerry told me you would do the engineering and he would do
    > the
    > welding.
    > > >
    > > > As I remember you will need the firewall hardpoint plan sets
    > > > which I don`t have because I decided to start firewall
    > forward
    > > > for different reasons.
    > > >
    > > > I remember seeing some pics of a RV-4 mount on your homepage,
    > > > so I hope you already got the needed plans?
    > > >
    > > > best regards
    > > > Thomas
    > > >
    > > > Sure no problem. I need a few dimensions. The firewall out
    > line
    > > > and the lenght of the cowl. Also do you plane to use the
    > stock
    > > > checked cowl or build you own? I think I know where you
    > > > can get a real slick rotary engine cowl from Brian Trubee.
    > > > Brian might also give us the hard point dimensions. I might
    > > > have them as well.
    > > >
    > > > --
    > > > Paul Lamar ...No rotor no motor.
    > >
    > >
    > >
    > > Cool!
    > >
    > > I don`t want to use the stock cowling.
    > > Something like Mike Wills or Brian Trubee, if possilbe with
    > a ram air
    > > scoop. But thats far away in the future yet.
    > >
    > > Is Brain still onboard?
    > >
    > > Kind regards
    > > Thomas
    > >
    > >
    > > Yes he is. He moved the cooling rad down under the cockpit
    > somewhat
    > > like the quick and simple cooling system. Frees up a lot of
    > volume
    > > under the cowl. Does away with the scoop under the prop. Makes
    > > the cowl easier to build. The last shots are of Steve Rosine
    > > airplane.
    > >
    > > Paul Lamar
    >
    >
    > Hi Paul,
    > I can't put the rad under the cockpit. I think I have to reserve
    > this space for a big muffler. I suppose noise regulations are
    > quite
    > stricter here as in the US. With a RV-4 the benchmark in
    > Germany is
    > around 63 db(A).
    >
    > If I plan to make a custom cowling, do you still need the
    > length of
    > the cowling? I thought the dimensions of the cowling will be
    > defined
    > by the design of the mount?
    >
    > Kind regards
    > Thomas
    >
    >
    > Ah yes. They will probably make you run a three blade prop
    > too. OK back under the cowl with the rad. It is going to look
    > more like a P40 than an Me109 :) (Bf109 ?)
    >
    > Paul Lamar ...No rotor no motor.
    >
    > I changed a few things on my aircraft- made the firewall 1 inch
    > taller,
    > and placed the prop flange 44 inches in front of the firewall,
   instead
    > of the stock 39 inches. Also used .025 thick elevator skins and the
    > extruded trailing edges for the h stab. We'll see how the weight and
    > balance comes out- I can always change the battery position.
    >
    > I don't know what provisions are made for engine mounting on the
    > renesis, but I imagine that it is similar to the generation 3, in
    > which
    > case you can use a shertz beam type mount.
    >
    > Brian Trubee
    >
    > Yes that is what I did. Use a Schertz Beam. Here is a 3D Thomas.
    > P-port. Exhaust pipes not shown yet.
    >
    > Paul Lamar

   Re Brian's moving the prop out to 44 inches, I think this usually a
   good idea in that extra space between the firewall and engine is
   very useful. Also, a p ported 13B , properly installed, will be
   lighter than the 0-320 it replaces. I am going to rebuild my
   Tailwind engine mount (again, sigh) and I am going to move the prop
   flange out to 42 inches from 38 inches. CG can be fine tuned with
   battery placement.
   Jerry


   OK here it is at 44 inches.
   --
   Paul Lamar ...No rotor no motor.