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----- Original Message ----- From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, November 07, 2004 6:15 PM
Subject: [FlyRotary] Re: PM alternator/generator with EWP
rijakits wrote:
Again, my question:
From where do you have the idea, that belts are the major prolblem?
Thomas J.
Not a major problem...but a potential softspot in any installation. They are very susceptible to heat and abrasion. Things that can be engineered out with a mass production car line, but are somewhat iffy in a one-off plane installation.
Added to that is the weight of two pulleys, a belt or two, and mounting hardware, and you possibly have something that is quite a bit heavier than necessary...especially considering that the mount and housing are built studier than would be necessary without the sideload and vibration caused by a belt.
I believe that a direct-drive, PM generator could be fitted to a 13B. It could possibly be lighter, occupy less room and be more reliable. If the EWP is used, the total installation would be simpler, as one of the reasons for a belt have been eliminated already.
Hi, Ernest....it would be wonderful for us canard builders to be able to get rid of the belts, as they are located very close to our aileron push-pull tubes. The loss of a belt could also mean the loss of aileron control. Converting to an EWP is of course, easy. If I can find a way to eliminate the belt to an alternator, I will be a happy camper indeed !!!! Please continue sharing any information you may find. Thanks for sharing your ideas. Paul Conner, 13b powered SQ2000 canard
-- http://www.ernest.isa-geek.org/
"This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
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