I have been absent for some time. what ever happened to the elec. var pitch
prop development? also, what happened to the Elipse (sp?) prop. they were
bought out, right? i can't find any google of them.
Kevin Lane
Butch got the prop back from the guy in NC that were supposed
to test it and is checking it over. The plan is he will
send it to Perry for test. Here is Perry's recent report on the
subject. PL
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I was running hotter spark plugs (BUR6EQ-L / BUR8EQ-T) as an experiment to see if it would help with the 100LL spark plug fouling issue.
Lynn Hanover made me aware that this could cause detonation at high power settings, so I removed the plugs with only 6 flying hours on them. They still looked like new and color was normal so I don't
think I was entering any dangerous territory, possibly because my engine runs so cool with the new two-pass rad. I put new stock plugs back in, don't want to take the risk.
I started looking at aquiring an off-the-shelf RX-7 cap discharge system again. I found this page, it looks like the installation is actually very straightforward:
http://www.fc3s.org/how_tos/electrical/hi_6.html
It is only installed on the leading coil and the stock coil is still used. My experience has been that it is the leading plugs that get fouled anyway, the trailings are less affected, maybe because
they are more protected, firing through the small hole in the rotor housing.
The two internal wires are disconnected that go from the igniter to the coil. The coil is then hooked up directly to the CDI output (orange and black wires in the attached photo). The igniter outputs
that used to go to the coil now go back to the CDI to trigger it (red and white wires). Very simple!
I still plan to work with you on developing a multi-spark high voltage CDI for aircraft rotary engines, but I want to install one of these automotive systems first, because it's cheap and readily
available.
I heard from Butch recently, I think he hasn't had time to go through the LAEV yet since he got it back. I'm still piddling on the test stand turbo engine anyway, I did some wiring but there is still
a little more to do and I still need to make the oil plumbing connections for the RD1B. I don't expect to be ready to do any LAEV testing until early next year. Once the engine is running I can also
use it to develop the new CDI.
Perry
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