> > > >      > > 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
> > > > Just don't fly over the Alps :) You will need that extra p-port
> > power at 14,000 feet 5000 meters. Tracy lives at or below sea level :)
> > > > -- > > Paul Lamar ...No rotor no motor.
> > > But sure he doesn't fly below sea level :)
> Vans says the ceiling with 150 PS to be around 18,000 ft.
> How much PS developes a side-ported renesis?
> > Best regards
> Thomas
> > I have flown below sea level here in California. There is
> an airport in Death Valley.
> > What is the uncontrolled air space altitude limit in Germany?
> Are you IFR certified in Germany?
> > Then you may have clouds to climb over.
> > If you are real careful with the intake design and you are
> using a 2.85:1 psru you might get 200 PS at 7500 RPM.
> Do you have a four port or a six port RX8 engine? Also it helps
> if you can take the engine apart and port it.
> Most people mess up the intake manifold and are lucky to
> see 180 HP. Many are getting 160 HP with the 13B because
> the intake manifold is so bad. Also a European muffler is not
> going to help the PS. Check out Mistral in Geneva. They will
> sell you a good manifold that gets about 190 HP. I don't
> know if it can be fitted to a four port RX8 engine or a six port
> for that matter.
> > BTW here are some picts of a sweet little airport and air show
> in Trento Italy. One of the places you can visit when you
> get your RV4  flying.
> > Paul Lamar ...No rotor no motor.

The renesis I bought from rupert is the six port type.
Uncontrolled airspace goes up to 2,500 ft GND, but you can fly
VFR and without air traffic control up to 10,000 ft.

Kind regards
Thomas

Thanks Thomas.
I'll tell a little story about why you need all the power
you can get when flying in the mountains. I rented a Piper
Warrior in Anchorage and took my wife and a couple of friends
down to Valdez for dinner. We flew down the scud run route. Down
Turnagain Arm through a narrow canyon to the port of Whittier, past
Esther Island and up the fjord into Valdez. Second time I had taken
that route. Parked the airplane and had dinner. When we
finished dinner the fog started rolling in the Valdez fjord
eliminating that route back to Anchorage. I climbed North up to
14,000 feet and I tried to climb over the Chugach mountains
some 13,000 feet high and some clouds on top of that. The climb
rate on the piper was down to 50 FPM and I was sweating it big time.
Rocks poked up through a broken cloud layer at 13,000 feet.
We came out about Butte and the weather became severe clear.
We could see Anchorage in the distance to the west as well as
Mt. McKinley 100 or so miles to the north east. It was summer so
it did not get dark till about 2 or 3 AM and then only for
an hour or so. The alternative was being stuck in Valdez for
a week or so until the weather got
better  (if ever) :).

-- 
Paul Lamar ...No rotor no motor.