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Unread 25-01-2009, 19:19
writchie writchie is offline
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AKA: Wally Ritchie
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Re: Fans/Propellers - Are you doing them?

Quote:
Originally Posted by Rick Wagner View Post
A few extra ounces of pushing power should always be welcome on the slippery surface this year. I'm surprised not many seem to be doing it because it is so simple to implement. Just take a spare motor and put a hobby shop propeller on it, mount the motor with a hose clamp behind a screen for safety. Have the software turn it on when the wheel motor current (or command level) exceeds some forward value.
It's a bit more than this but not that difficult.

The major weight and effort is the safety cage. When you throw a prop it can do serious damage and may bounce off obstacles without loosing all that much. The trailing edge is sharp. IMHO only a complete shroud that prevents an exploding propeller from escaping will satisfy the Inspectors.

Props must also be balanced or the vibrations are likely to lead to failure.
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