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I would like to run my engine on it's test stand
without the prop. I'd like to rig up electric fans to blow thru the
radiators. will I have better luck with a leaf blower or one of those
squirrel cage type blowers? the leaf blower has high velocity, but it
seems the big squirrel cage blowers [like used in forced air furnaces] move a
large quantity of air and may handle back pressure better. I assume others
have already figured this out. I quit when water hit 210°. the leaf
blower I had on the water rad didn't seem to make a huge difference, but my
ducting was a pretty poor first attempt.
my tests so far have had no potential of runaway
rpms, plus the MSD ignition has rev limiters, so I am not worried about
that. being killed by a prop is a MUCH more potential accident. I
have a wood prop and is was too scary to be around when mounted. I don't
have water at the airport, so that solution isn't too easy, I'd have to bring
water and pump it. at some point I'm going to have to address the muffler
too. last run got up to 4000rpm. damn that is loud, even with
my noise canceling headsets turned on. my new s/s exhaust manifold is
starting to turn a golden color.
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