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Message
you should get a speeding ticket!!
Everyone else is toiling away for years and you just slam together some
parts and start it!
Hi
Thomas. Well, in this case, no records were broken. This is the same
engine I had running on the Kolb about a year ago. All I did recently
was change the gear drive, and put it on a trailer as a test stand. I even
used the same wiring, hoses, and even the old Kolb inst panel, so there
really wasn't that much to it.
For your 1-rotor, you a right about more inertia from the flywheel, but you
could keep mass down by making it a big diameter with most of the mass at the
rim, inertia-effect goes up with radius at the same weight (actually it goes up
with the square, if don't get it completely wrong here)
That
would be the plan. I've all but forgotten about remaking the current
aluminum adapter, because it would be too heavy, without helping much.
It's also way easier to make a heavy ring that uses the existing bolt holes in
the flexplate. I'd have to come up with a way to balance it, and it
would have to be at least 10 lbs I think. I tried several pounds before
(with Tracy's drive), and it made no difference at all.
Also what about a freewheel-unit, before the PSRU? Something like in
car-auto-trans, it would not eliminate the torque reversal in the engine, but
keep it from going into the gearbox/prop.
You mean like
a torque converter? That might help, but there's no room for that. A
few of the two strokes use "slipper clutches" to help with the gearbox
resonance.
By the time the Mazda-1-rotor is smooth and idles well, it probably will
cost the same as a small re-engineered 2- or 3-rotor. You mentioned Alu-side
housings - as the price is now, these already buy a whole 40-hp engine.....
unless Mazda goes Alu at some point....
Nevertheless, keep hacking on it!!
This is one
of those projects I'm doing just because I want to. It's clear
that it may never become anything worth using, but it's an interesting
exercise nonetheless. With any luck, it will keep me busy until
someone makes an ideal engine :-)
BTW, I found
no evidence at all of damage from my missing piece of intake. I can't
inspect everything through the intake and exhaust ports, but what I can see
looks perfect, and certainly the apex seals are fine. There's about a
50% chance that the aluminum piece came off after I removed the intake, since I
was trying to break it the rest of the way apart after I got it off
the engine. I didn't see the missing piece on the workbench, or floor, but
that doesn't mean much either.
Rusty
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