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Determining the number of strands in rubber motors (Read 204 times)
Reply #2 - Jul 7th, 2017 at 6:51pm

Sky9pilot   Offline
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Stick & Tissue
Kelso, WA 98626 USA

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Thanks Ian for your Xcell prowess!!! Much appreciated!
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #1 - Jul 7th, 2017 at 3:31pm

pb_guy   Offline
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So I'm just a kid at heart.
Youbou, BC, Vancouver Island

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If you want to play with the numbers, but the math is too daunting, I put together a spreadsheet to take the hard parts out. The yellow cells are for internal calculations. Don't enter anything there. The blue cells are where you put your data. I included a couple of spots for you to do metric to SAE conversions.
When it comes to the selections for rate of climb and single/double surfaces, only the first checked cell will count.

Modified Spreadsheet layout. Updated Version now attached.
ian
« Last Edit: Jul 8th, 2017 at 3:01am by pb_guy »  
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Jul 7th, 2017 at 11:33am

Sky9pilot   Offline
Administrator
Stick & Tissue
Kelso, WA 98626 USA

Posts: 8473
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Chas H Grant wrote this article for Free Flight Rubber Modelers to help them determine the number of strands needed to power their models.

It was posted in the Current Builds section by Mike/New Builder, July 7, 2017 for the Gene Duboise Gere Sport build.
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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