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My New Whiz-Wheel!
Page 1 of 1
My New Whiz-Wheel!
A few months ago, I found a .pdf of an old Aero Modeller drawing for a Control Line Speed Calculator rotary slide rule. I’m not sure, but I think that I found it in the Control Line Plans thread over on RCG. It looked cool, so I saved a copy. For some reason, I decided a couple of days ago that I wanted to make one up for myself. So, I printed the page at a size I liked and cut the two wheel sections out. On break at work today, I laminated the wheels with the heaviest laminating plastic we have. Then I cut the wheels out and pushed a pin through the center to make my new Speed Calculator.
I know there are programs for your computer or your smart phone to do this, but I’m old school. Gimme a stopwatch and a slide rule and I’m happy as a clam. Kinda like having an E6B for control line planes.
But, how accurate is it? I compared the times/speeds from the 2014 Reed Speed Results thread to the speeds I got on this beauty. I rounded the times to the ½ second, and then looked up the results. All speeds were within a half mile per hour of the computer calculated times. More than accurate enough for field tuning. Gotta love the old school….
6th Place: Computer – 45.19MPH, Calculator – 44.75MPH
5th Place: Computer – 53.69MPH, Calculator – 54.0MPH
4th Place: Computer – 54.58MPH, Calculator – 54.0MPH
3rd Place: Computer – 55.29MPH, Calculator – 55.0MPH
2nd Place: Computer – 60.78MPH, Calculator – 60.5MPH
1st Place: Computer – 68.22MPH, Calculator – 68.0MPH
Yep, I LIKE it!
The Whiz Kid Mark
I know there are programs for your computer or your smart phone to do this, but I’m old school. Gimme a stopwatch and a slide rule and I’m happy as a clam. Kinda like having an E6B for control line planes.
But, how accurate is it? I compared the times/speeds from the 2014 Reed Speed Results thread to the speeds I got on this beauty. I rounded the times to the ½ second, and then looked up the results. All speeds were within a half mile per hour of the computer calculated times. More than accurate enough for field tuning. Gotta love the old school….
6th Place: Computer – 45.19MPH, Calculator – 44.75MPH
5th Place: Computer – 53.69MPH, Calculator – 54.0MPH
4th Place: Computer – 54.58MPH, Calculator – 54.0MPH
3rd Place: Computer – 55.29MPH, Calculator – 55.0MPH
2nd Place: Computer – 60.78MPH, Calculator – 60.5MPH
1st Place: Computer – 68.22MPH, Calculator – 68.0MPH
Yep, I LIKE it!
The Whiz Kid Mark
batjac- Diamond Member
-
Posts : 2339
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA
Re: My New Whiz-Wheel!
Looks like you've got a keeper there! Pocket sized, doesn't require batteries and it'll fit behind my pocket protector.
Marleysky- Top Poster
-
Posts : 3618
Join date : 2014-09-28
Age : 71
Location : Grand Rapids, MI
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