> >      > >
> >      > > 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.
> Hi Paul,
Wonderful job. Thank you.

Did you design the mount for the standard firewall (29,13) or the
1 inch taller one like Brian did?
Is this a necessary issue, or was it just for a more comfort
installation?

I wouldn't dare to P-port my renesis.
I prefer side-ports like Tracy did.
For the RV-4 I don't have to squeeze every PS out of the
renesis I could, even If you could have enough power like
you used to say :)

Kind regards
Thomas