Neil, after looking at your cowling, I don't think the regular Glastar
unit would work. Do you feel the same? I never built anything like
it, and I can see it's plenty of work. Im wondering how close the
cowling on an RV is tto a Glastar. Probably more trouble than it's
worth.
How much do you think the MM would cost? I was thinking of getting
someone around here who would let me cut/fit the parts, and he could
weld with a student(me) under his nose. I have an old buzzbox tig,
but I'm not verry good. Tubing is esp difficult, i've heard. Jack
An engine mount could cost as much as $1000. Most of that is labor.
If you can do it your self that would be much cheaper of course.
The cooling system will fit in the stock cowl with the rad mounted on
the cool side. That is what the 3D drawings are all about. To see what
fits
and what does not fit.
Paul Lamar
Jack,
Cowling. The thrust line on a glastar is I believe much
higher
than an RV, as I had to keep everything as tight (low) as possible to
keep
the cowl from interfering with the engine. Things like a CLR of 7
inches on
the P port pipes rather than the standard 8 inches. The oil filter and
generator also had to be mounted on the side of the motor to keep the
overall height down. I have since walked around the stock cowling and
wandered if I should have just attempted to alter that, but is very
difficult to get alterations even and nothing looks worse than a lop
sided
cowling.
My cowling was made to suit Jeff Doddridge's motor mount and as I have
said
I have a mold. I never intended to make cowls, but I am prepared to
make a
cowling for you if required, but do allow that freight from here,
Australia,
is very dear, especially as cowls are bulky and freight is on volume
rather
than weight. Post may be cheaper, but I would expect a freight bill
of up
to $500 as a guess. Just something to think about.
MM. The actual welding and cutting I did in a half day, but that was
after I had spent considerable time in making up a jig. Again that was
specifically for Jeff's engine mount. I made the jig to ensure I had
the
motor offset and down thrust as close as possible. I really cannot see
any
other way to do it. Grinding and cutting the tubes was very time
consuming
to get as close as possible for minimum welding. It is frightening how
quickly the tube shrinks as you grind the tapers each end, and
suddenly it
is too short. With that in mind you start on the longest, so that if it
suddenly "shrinks" you can use it on a shorter place. The difficulty in
tube welding is the lack of material so that any excess heat and it
simply
melts leaving a big hole to fill. That is why a TIG is ideal, as heat
is
easily controlled which is less distortion as well. Again as I said I
also
have most of the jig work still here with too many photographs to
guide you
if that is how you want to go.
Any more useless information you want to know, just ask. Neil
in OZ.
Back on-line. Over 1 week without service. Had to put in a new line,
new modem, new wireless, new/used computer. My driveway is 960 feet.
I'm not fond of snow either. Thank you Neil , shipping is a bit much.
I'll wait until I understand just what I need. I'm curious about the
different cooling methods, under the engine and spark plug side.
Under seems to be sooo much larger in capacity. I'm aware of the
necessity for lotsa cooling for the rotary, and I wouldn't want to do
the job 2 or 3 x's. Still need to do more work on the fuselage and
wire the wings, and.....Jack
You need my book Jack. How to Cool Your Wankel.
Paul Lamar
Jack,
Paul is right as usual, whatever you do get Paul's book on
cooling, as is the best buy available. I followed Paul's advice from
the
book and now even though it is late winter (15 degrees C which is
possibly
60 to 70 F) I can run my motor at full throttle stationary with the Rad,
shutters closed for 10 minutes straight and just a slight opening of the
shutters drops the temps to under 180 degrees. The oil temps track the
water
by around 5 - 10 degrees. Exhaust temps are getting to 1800 degrees
so it
is working and keeps possibly too cool. What a wonderful problem. Took
pics. of the rads so you can the setup which is a direct copy of
Paul's
book. THe holes in the top of the left cowling are to feed the intake
for
the cab heater which goes to a heat muff on the exhaust. It certainly
works
for on the outlet from the heat muff it melted the crappy black tubing I
had
used. One hour at full noise with the cab getting decidedly hot
before the
plastic melted, and the water temps never got over 190 degrees and
that was
with as I said the shutters closed. I am not the only one who thinks
that
Paul;'s book is good value, for I took his book to an air show with my
motor
18 months back as a static display which generated a lot of interest,
and
by
the end of the first day, some bastard had pinched Paul's book. Neil.
Good pictures Neal. Thanks.
Paul Lamar
Jack, We use a shipper called "Conico" to send stuff to the
Philippines. A
box 30x30x30 inches is $80 and larger items are figured by volume at the
same rate. We send college text books which we load into the boxes at
the
shipper with the box on a pallet and they fork lift it into the
container..
To send a rotary engine put a piece of 3/4" plywood in the bottom of the
box. These shippers are located in all major cities. We go to Norfolk
Virginia which is 60 miles.. These people are container packers usually
serving shipments to one foreign country. Our shipper accumulates a
container about every two weeks, then 5 weeks till delivery to their
foreign location.
george grimes
Spruce is shipping the book.
Neal, that plane looks sooo cool. I'm dying to hear how it flies. I
was running a bit stagnant for a while with all the house inspections,
and meeting town's building specs, but I got my CofO finally, and I'm
back on the plane as soon as I clear the shop. I am impressed with
the rotary. I was wondering if you followed up on the rotary sale on
Barnstormer. Until my reverse mortg comes thru, I'm a bit short.
Thanks for the shipping info, George, i'm sure that someone around
here must use the same practicality in shipping. I surely is nice to
be involved with you guys. I don't know anyone around here building a
plane, and even fewer mechanics to chat .
Jack
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