Randy,
I need to build pipe tunnel in the bellypan. fiberglass lay up on a PVC
pipe to make the tunnel. cut out the fuse around 4" behind the wing
mounting. The fuse will also have some glass lay up to fill the cutout.
The entire glass work will probably weigh similar to the unmodified plane.
Karl's header is a wraparound. I think that is his specialty. Just tell
him how high the header has to be reference to the exhaust center line.
Above setup is for a stock OS 91SX-H w/ an extra head shim, Perry pump,
Karl's header, 140 size carbon pipe (21" long). APC 15x8 with 20% had
10500rpm on a bench.
I will have to run the engine again soon since I changed the crankshaft w/
91FX's, Rear bearing with Boca SS. I am thinking about running the setup
with 16 or 17" props as Nat Penton. (I gotta look for those E-mails from
Nat)
Ihncheol Park
-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On
Behalf Of Randy
Sent: Thursday, November 04, 2004 7:29 PM
To: discussion at nsrca.org
Subject: Re: Excelleron 90
So how much modifying did you need to do to the bellypan? I have a macs
header for my OS91FX, but would need to be able to rotate the engine to get
the pipe to line up bellypan. It appears I would need to cut out engine
beams to do this. I assume Mr. Mueller's header wraps around the engine?
Wings and tail feathers are done, or at least waiting for the glue to dry.
Thats most of the assembling for this plane. Probably spend Saturday
putting the engine and radio gear in the plane.
Randy
----- Original Message -----
From: Ihncheol Park
To: discussion at nsrca.org
Sent: Tuesday, November 02, 2004 3:21 PM
Subject: RE: Excelleron 90
Randy,
The same hinges were used in 80's by EZ. I am replacing them with
RadioSouth hinges.
For the engine, I am using an OS 91SX/FX with modified bellypan and fuse
to accomodate a tuned pipe with Karl Mueller's header. Another one will
have YS 120SF with pipe.
Only thing I wanted the SA Excelleron 90 to be better was the packaging.
There were no dividers to protect the parts (compared to JR Propo's Explorer
90).
Ihncheol Park
-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of randy10926 at comcast.net
Sent: Tuesday, November 02, 2004 9:45 AM
To: nvrc club list; discussion at nsrca.org @nsrca.
Subject: Excelleron 90
When the box arrived last night after work. Opened and what a pretty
covering job. Man I wish I could be this good at covering.
So what engine would You use?
It comes with metal hinges, which I have never seen before. Would you
repalce them and with what?
Randy
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