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Old Feb 21, 2012, 11:21 PM
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United States, OR, Tualatin
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I am looking for your email Doc that says: "Send me my money and I will send you your TTTGU"
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Old Feb 22, 2012, 10:13 AM
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USA, OK, Oklahoma City
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Possibly a dumb question: When you glue the unit to the fuselage, the magnets were just pushing against the edge of the unit. That's why you had to string them together correct? GV
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Old Feb 22, 2012, 11:16 AM
Yes, ALL your money...
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A hut in the woods in Oregon
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Quote:
Originally Posted by gavoss View Post
Possibly a dumb question: When you glue the unit to the fuselage, the magnets were just pushing against the edge of the unit. That's why you had to string them together correct? GV
The inside magnets are compelled to follow the outside ones as close as possible. By tying the top ones and pinching them together, the inside ones exert side force on the block, jamming it up against the roof of the forward fuselage.
Without pinching them together, they don't exert any clamping pressure.

BTW, one of the inside magnets was stuck by some of the smooshed out 5200, and I simply removed the outer magnet, and reversed poles, and placed it over the inside magnet. It immediatly jumped out of the glue and snapped onto the correct orentation. Cooler than cool

WinchDoc
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Old Feb 22, 2012, 11:32 AM
Yes, ALL your money...
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A hut in the woods in Oregon
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a little moment of truth

Last night I glued the hatch onto the hardware and left it to cure overnight.

It's like presents in the morning!
*BUT*
will the glue hold the block into the canopy, or are the magnets too powerful?

WinchDoc
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Old Feb 22, 2012, 01:20 PM
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United States, WA, Port Orchard
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You Sir, are a freakin genius.
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Old Feb 22, 2012, 08:22 PM
Just Toss It !!!
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United States, CA, San Diego
Joined May 2004
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Now then, after flight testing, please let inquiring minds know if the magnets were strong enough to hold the canopy or if the long moment arm allowed the air to peel it off like your fingers did.

Matin
is a naturalized pessimist.....
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Old Feb 22, 2012, 10:19 PM
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Portland Intl, Oregon, United States
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Maybe Docs done one of his special "hold it out the window of the car while the Winch Wench drives fast" wind tunnel tests

Tim
Who's thinkin a safety string might be a good idea until its tested at speed.......;-)
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Old Feb 22, 2012, 10:28 PM
Yes, ALL your money...
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Old Feb 22, 2012, 10:46 PM
Launching!
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Chula Vista, CA
Joined Jul 2006
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Looking good Doc......slowing down ain't such a bad thing when your landing a twisty!

DC, who predicts the magnets are EXACTLY powerful enough
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Old Feb 23, 2012, 08:25 AM
Yes, ALL your money...
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A hut in the woods in Oregon
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Quote:
Originally Posted by MATIN View Post
Now then, after flight testing, please let inquiring minds know if the magnets were strong enough to hold the canopy or if the long moment arm allowed the air to peel it off like your fingers did.

Matin
is a naturalized pessimist.....
Quote:
Originally Posted by A6INTRUDER View Post
Maybe Docs done one of his special "hold it out the window of the car while the Winch Wench drives fast" wind tunnel tests

Tim
Who's thinkin a safety string might be a good idea until its tested at speed.......;-)
Quote:
Originally Posted by winchdoc View Post
It's in secret wind tunnel testing-shhhh

WinchDoc


Notice that there are 2 magnets in line; it's much easier to remove across the long axis than the direction of the air load.

Tim is right, I tested the magnet block in the 'poor man's wind tunnel'

WinchDoc
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Last edited by winchdoc; Feb 23, 2012 at 08:37 AM.
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Old Feb 23, 2012, 09:27 AM
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Really cool idea. Ian
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Old Feb 23, 2012, 11:54 AM
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Cheshire, UK
Joined Apr 2006
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Very nice result Doug!

best make sure your power switch isn't in line with the magnets though ehh?
- wouldn't want a brake/off control would we.....

Rob
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Old Feb 23, 2012, 01:53 PM
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United States, OR, Corvallis
Joined Mar 2007
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I haven't used any of the rare earth magnets in my planes yet, but has anyone found any interference issues with either the receivers or servos? Just wasn't sure if the magnets were too close to a servo core if that could cause problems.
Tom
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Old Feb 24, 2012, 10:38 AM
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Roseville, California, United States
Joined Mar 2001
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I've been using them more and more these days...haven't had any issues related to equipment interference yet. In fact I haven't had any issues with them at all. They are pretty slick and have a lot of great uses.

-hutch
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Old Feb 24, 2012, 01:03 PM
'Rainmaker'
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Cheshire, UK
Joined Apr 2006
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I was kidding.....

Seriously though, I use them on the rear of the canopy to take out any of the servo slop and 'keep the hatch shut' on the rotor. The lever arm is quite long.

Rob
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