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Re: hangglider

Postby tomsines27 » Wed Aug 13, 2014 4:01 am

Hi Rick, You make a good point.
The choices are not very good, to expensive, no range, they even catch on fire, but at least there is a choice. You probably think I'm going to try and sell you my car, well its not for sale. People like yourself just think I'm nuts, even though I have solved these problems. By the way, did you notice, that brown haze over your city. I guess if you live in manure you get used to it. Go solar.
Tom :mrgreen:
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Re: hangglider

Postby Rick Masters » Wed Aug 13, 2014 11:08 am

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Re: hangglider

Postby tomsines27 » Thu Aug 14, 2014 3:25 am

Hi Rick, This has been done before. You`ll never get your wife in it, and where would you put kids,and groceries? You`ll be a lonely man, until the rear wheel slips out from under you, then you`ll be in the hospital!
Tom :mrgreen:
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Re: hangglider

Postby Bob Kuczewski » Thu Aug 14, 2014 10:46 am

tomsines27 wrote:I guess if you live in manure you get used to it.


Objection. Assumes facts not in evidence.

Be nice!!
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Re: hangglider

Postby Rick Masters » Thu Aug 14, 2014 2:08 pm

Tom is referring to pollution and he is correct. This is something we have to explain to people from San Diego.

He doesn't seem to understand handling of modern reverse trikes, though, which is surprising.

Image

"Directional stability is another benefit gained by placing the center of gravity up front. Tri-Magnum stubbornly resists swapping ends no matter how it’s treated. A locked-wheel, sliding stop from 50 mph produces a straight-ahead line of travel with the rear end floating first a little to one side, then a little to the other. Even full-power turns with the rear wheel spinning wildly across the pavement produce nothing more than a little sideways float at the rear. Corners are taken flat with almost no body roll. This thanks to the stiff stabilizer bar on the VW front end. In our case it’s a necessary item because all the roll stiffness of a three-wheeler must come from the two side-by-side wheels."
http://blog.modernmechanix.com/the-mi-u ... xcitement/
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Re: hangglider

Postby tomsines27 » Fri Aug 15, 2014 4:37 am

Hi Bob, I`ve Talked nice about pollution for decades, nobody paid attention. Now, America is circling the drain, and you`re asleep at the wheel.
Tom :(
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Re: hangglider

Postby tomsines27 » Fri Aug 15, 2014 4:57 am

Hi Rick, You make a good argument, however I noticed this in the article. "under full throttle, the rear wheel spins because the engine can produce more power than the single rear wheel can transfer to the ground". My point!
Tom :(
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Re: hangglider

Postby Rick Masters » Fri Aug 15, 2014 9:17 am

Your point is not a point. Any vehicle with a powerful engine can break its wheels loose. So what? The triMagnum has placed better numbers on skidpad testing than a Corvette. How? Because any 4-wheel vehicle lifts the inside rear in hard cornering -- becoming much like a trike at that moment.
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Re: hangglider

Postby tomsines27 » Sat Aug 16, 2014 3:26 am

Hi Rick, You can move the weight forward, made it longer, widen the wheel base, and many other things, but it still has a fatal flaw. Its A TRIKE! You`ve gotta have balls a steel to ride that thing. Tom
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Falcon 3 / 195 Measurements

Postby Bob Kuczewski » Tue Aug 19, 2014 12:26 pm

Hi Tom,

I'm sorry it's taken me so long to get you the measurements that you requested. I was at Fort Funston most of last week and I flew every day from Tuesday through Saturday. But I did find the time to take the measurements that you wanted.

This first picture shows my Falcon 3 / 195 set up behind the bush at Funston. Because the glider is at an angle to the camera, the planform is foreshortened. Notice that the sweep back of the wing tips is a major contributing factor in the glider's stability, and yet that is not reflected in the measurements you've asked me to make:

measure_001.JPG
measure_001.JPG (83.82 KiB) Viewed 5033 times


These next two pictures show the location of my hang point (about 67.75 inches) from the front of the keel:

measure_002.JPG
measure_002.JPG (46.77 KiB) Viewed 5033 times

measure_003.JPG
measure_003.JPG (60.78 KiB) Viewed 5033 times


These next two pictures show the location of my hang point (again about 67.75 inches) from the rear of the keel:

measure_004.JPG
measure_004.JPG (89.1 KiB) Viewed 5033 times

measure_005.JPG
measure_005.JPG (58.68 KiB) Viewed 5033 times


These last two pictures show the location of the trailing edge of the glider as measured from the front of the keel (about 106 inches):

measure_006.JPG
measure_006.JPG (66.28 KiB) Viewed 5033 times

measure_007.JPG
measure_007.JPG (86.12 KiB) Viewed 5033 times


So to answer your question, I hang at roughly 64% of the root chord (68/106). But that is NOT 68% of the lifting surface, because of the sweep of the wings and the general complexity of the airflow over a glider. That's why wind tunnels were invented!!    ;)
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