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Determining the number of strands in rubber motors (Read 2220 times)

pb_guy 5 Star Member Offline So I'm just a kid at heart. Posts: 2045 Location: Youbou, BC, Vancouver Island Joined: Oct 15^th, 2014	Re: Determining the number of strands in rubber motors Reply #5 - Mar 6^th, 2019 at 5:12pm	Print Post
	This is the worksheet on which that calculator is based. Perhaps it will work on your mac. No guarantees. ian

	Hode_sRubber_Motor_calculator.zip ( 5 KB \| 79 Downloads )
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Sky9pilot Administrator Offline Stick & Tissue Posts: 12911 Location: Kelso, WA 98626 USA Joined: Jan 9^th, 2010	Re: Determining the number of strands in rubber motors Reply #4 - Mar 6^th, 2019 at 3:27pm	Print Post
	You'd have to contact that site for info regarding making it work on your mac. I think you might zero out the numbers on the site, plug in your numbers and calc on the site for the results. Just a thought! 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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PT New Member Offline I Love YaBB 2.5 AE! Posts: 22 Location: Seattle Wash. Joined: Jan 20^th, 2019	Re: Determining the number of strands in rubber motors Reply #3 - Mar 6^th, 2019 at 11:29am	Print Post
	I found this calculator also http://jchismar.com/peanutscale/calculating-scale-rubber-motor-sizes/ How ever I can't get it to work on my Mac


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Sky9pilot Administrator Offline Stick & Tissue Posts: 12911 Location: Kelso, WA 98626 USA Joined: Jan 9^th, 2010	Re: Determining the number of strands in rubber motors Reply #2 - Jul 7^th, 2017 at 5:51pm	Print Post
	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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pb_guy 5 Star Member Offline So I'm just a kid at heart. Posts: 2045 Location: Youbou, BC, Vancouver Island Joined: Oct 15^th, 2014	Re: Determining the number of strands in rubber motors Reply #1 - Jul 7^th, 2017 at 2:31pm	Print Post
	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 8^th, 2017 at 2:01am by pb_guy »
	Rubber_Motor_Calculator.zip ( 6 KB \| 61 Downloads )
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Sky9pilot Administrator Offline Stick & Tissue Posts: 12911 Location: Kelso, WA 98626 USA Joined: Jan 9^th, 2010	Determining the number of strands in rubber motors Jul 7^th, 2017 at 10:33am	Print Post
	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

	( 127 KB \| 81 Downloads ) 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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