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Single blade madness continued
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7
comments (7 topical, editorial)
Re: Single blade madness continued
(
3.00 / 0
) (
#4
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by johnlm on Thu Feb 10th, 2005 at 08:54:00 PM MST
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User Info
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Brief update
After rereading the original post by Rotornuts and the posts about the maple seeds, I started getting concerned about all the talk about balancing one of these monoblade props, so I couldn't take it anymore and went out and chucked the prop up to a variable speed drill. I started it slowly, expecting to pick up some kind of wierd vibration or shuddering at around 50 to 100 rpm - nothing - smooth as silk. So I cranked it up to a couple of hundred rpm where I noticed a slight vibration, but nothing much worse than Ive seen on 3 blade props that were not precisely balanced. So I cranked it up full bore around 600 rpm and it was still pretty smooth. The one test I did not do and thought about after I came back to the house was to yaw it a bit while I was holding this thing (the drill with the prop on it) in my hands with the prop whipping by at 500 rpm to see if there was any of the 2 blade choppy effect during yaw. I guess that will wait until tomorrow. But for now, for no more time than I spent trying to balance this prop, I think we have over concerned ourselves. Either that or I just got plain lucky on the balance. Looks promising.
John
Re: Single blade madness continued
(
3.00 / 0
) (
#5
)
by rotornuts on Thu Feb 10th, 2005 at 10:16:03 PM MST
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User Info
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My only real big concern john is the narrow blade but I'm sure your aware of that. we should be trying to combine the area of three blades into one or the low speed may be disappointing. But seeing as how you had all the parts allready I don't see the point in making a new blade till we see how the three point balance system works out.
Thanks for trying this out.
Still eagerly waiting for you to get some wind.
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Parent
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Single blade madness continued
|
7
comments (7 topical, 0 editorial)
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