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03-31-2013, 10:40 PM | #1 (permalink) |
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HEIM JOINT's explanation of Tennis Raquet Effect
I made up this article a couple of years ago for a magazine but it was never published. So I thought I might as well post it on the forum. It is my attempt to show what generates tennis raquet effect and why/how Chinese weights can reduce it. Hopefully after reading and digesting the article you will have a clearer understanding of the physics involved.
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05-09-2013, 07:39 AM | #2 (permalink) |
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Join Date: Mar 2012
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Re: HEIM JOINT's explanation of Tennis Raquet Effect
Thanks for posting!
Anyone put Chinese weighs on the main blades? ___________________________ Sent via Android, Tapatalk. 7HV,Warp, 130XXX |
08-07-2013, 08:02 AM | #3 (permalink) |
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Join Date: Mar 2011
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great writeup, we could use more of this high quality engineering and explanations
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08-07-2013, 08:19 AM | #4 (permalink) |
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Thread Starter
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Thanks, but as you can see there is not much interest.
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08-09-2013, 12:06 AM | #5 (permalink) |
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Join Date: Mar 2013
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To bad - could of saved a few dirt naps -
Evidently Blade did listen - and lynx. Sum
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08-19-2013, 03:26 PM | #6 (permalink) |
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Join Date: May 2007
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HEIM JOINT, I have read your article and recently experimented with this idea. Just wanted to let you know that someone has tried it and I greatly appreciate your time and research into this.
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Conway V Scene From Above Photography www.scenefromabove.ca Gaui X7 Cameraship |
10-24-2013, 12:26 PM | #7 (permalink) |
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Join Date: Nov 2010
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Yeah...
Well I appreciate this stuff too. But, maybe if you sell some billet machined titanium Chinese weights and sell them at 500% mark-up, with some scantily clad ladies in your booth, people will notice then?
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-Rob Former Managing Director of Maxxum Robotics Inc. |
10-24-2013, 02:21 PM | #8 (permalink) |
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Join Date: Mar 2012
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Re: HEIM JOINT's explanation of Tennis Raquet Effect
Hahaha! That'll do it.
Gotta be in fashion. ___________________________ Sent from phone using Tapatalk typo generator |
10-29-2013, 07:48 PM | #9 (permalink) |
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Join Date: Jul 2008
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Thanks for the write up Heim Joint
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11-03-2013, 04:56 PM | #10 (permalink) |
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Join Date: Aug 2010
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We do appreciate it.
At least those who can appreciate it appreciate it! Most guys would rather spend big bucks on an oversized, over powered servo to solve their tail problems than to understand some basic physics. And I appreciate the actual measurements. I have done the tests on my 250, at least with my fingers on the pushrod and you can just feel the difference. Not quantitative, but illustrative. |
02-14-2014, 11:20 AM | #11 (permalink) | ||
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Join Date: Jun 2013
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here's a good visual on the concept.
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04-24-2014, 05:06 PM | #12 (permalink) |
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Join Date: Jan 2008
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How do I get chinese weights
How do I get some Chinese weights for a Trex 500 DFC?
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12-05-2014, 03:22 PM | #13 (permalink) |
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Join Date: Jan 2011
Location: Sao Paulo, Brazil
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Fine article Hem! It shed a light on an issue I didn't ever imagine that exists. Congratulations!
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Compass 7HV / Atom 6HVU / Atom 5.5 / Align Trex 500L / Spektrum DX8 Not flying anything - model or full - since 2017! |
02-08-2015, 02:12 AM | #14 (permalink) |
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Join Date: Sep 2009
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Excellent product. I have used them in the past. Any chance of making a set for the Goblin 380?
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02-08-2015, 08:22 AM | #15 (permalink) |
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Thread Starter
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Sorry I don't have anything that would fit the Goblin 380
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02-08-2015, 09:03 AM | #17 (permalink) |
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Join Date: Sep 2009
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Heim Joint, check out this thread. I would bet you could sell dozens of weights for the Goblin 380. Upgrade addicted crowd...
Check out the thread I started in that forum: https://www.helifreak.com/showthread.php?t=680826 |
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