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John,
I don't know much about the diesel engines, but I have a friend
in St.Louis that uses them all of the time with success. His
name is Dan, I can get you his phone number if you want to talk to
him about them. I won't publish his phone number here until I have
talked to him.
I will attempt to answer your questions as I have watched Dan
and learned some.
> o - How do I choose the correct setting for starting
o To start the engine you need to increase compression... as the
engine warms up you should be able to back-off of the compression
somewhat to get the engine to run smoother.
> o - Does the motor need priming
o Dan always primed the engine... much like a glow engine.
> o - Should the motor be peaked out as say a glow engine
o The problem with tuning a diesel is that you have two settings
to play with... the needle valve and the compression. It seemed
that Dan would wrench down the compression and then start the
engine. I would run rough... like a car with a raised cam (high
RPM and then low RPM). After letting the engine run a little
while to warm up he would rev the engine and adjust the
compression until the thing smoothed out a little (some times
he would let it off too much and the thing would die). After
this he would peak it out with the needle valve... much like
a glow engine.
One more thing. Dan used a higher piched prop than you would expect.
I don't remember the details but I remember him saying that the
secret to performance is in pitch and not RPM's.
I must say they sound much different than a glow engine (much more
quiet). If you want help just let me know and I will send you
Dans phone number.
Hope this helps
Jeff
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