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View Poll Results: Which type of combat do you prefer?
One design (same plane shape/size) with common and battery) 1 4.35%
Similiar planes (Kens single motor combat planes) and common motor and battery. 14 60.87%
No limits except battery size (900 mAh 2S) 3 13.04%
Anything that flies....no limits 5 21.74%
Voters: 23. You may not vote on this poll

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Old Feb 26, 2013, 09:35 PM
treefinder
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SE MI
Joined Oct 2004
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All I know is after carefully setting the magnets in place so they attracted each other, I hot glued them in and after it cooled, it was like there were no magnets there, only two pieces of non magnetic material. I peeled them out and checked to see if they attracted each other and nothing. posted the question "wha happened" here and got the answer that heat kills rare earth magnets, so, from then on, I use epoxy. Pretty much the only use I've found for it on foamies.
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Old Feb 27, 2013, 04:45 AM
Doink-not again :)...aka Greg
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United States, MI, Sterling Heights
Joined Jul 2012
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Thanks everyone - epoxy looks like the recommended glue.
I found this this morning - interesting.
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Old Feb 27, 2013, 05:20 AM
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Joined Apr 2012
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Quote:
Originally Posted by mav913 View Post
Been kind of quiet in here, everyone must be flying.

Not sure if anyone interested but I thought I'd let everyone know there is a R/C Swap Meet this weekend at the Gibraltar Trade Center, Taylor. It's organized by the Downriver Aero Modelers Flying Club.
http://www.gibraltartrade.com/

See you all tonight.

John
There is also a Model airplane show being put on by RCCD at the Gibraltar in Mt Clemens on March 16 and 17.
http://www.gibraltartrade.com/pdf/RC...rcraftShow.pdf
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Old Feb 27, 2013, 05:24 AM
Slipping the Surly Bonds
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Attica, MI
Joined Dec 2006
10,562 Posts
A quick repost from the above website What Not to Use!

Do not use a hot glue gun on neodymium magnets. While this adhesive works really well on so many surfaces, the high temperatures can demagnetize your magnets. Even the so-called low temperature hot melts are well above the Maximum Operating Temperatures of most neodymium magnets. Don't do it!

Now I know. I read it on the internet. lol!


Ken
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Old Feb 27, 2013, 07:57 AM
AKA Don
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United States, MI, Houghton Lake
Joined Dec 2002
7,609 Posts
Quote:
Originally Posted by springer View Post
All I know is after carefully setting the magnets in place so they attracted each other, I hot glued them in and after it cooled, it was like there were no magnets there, only two pieces of non magnetic material. I peeled them out and checked to see if they attracted each other and nothing. posted the question "wha happened" here and got the answer that heat kills rare earth magnets, so, from then on, I use epoxy. Pretty much the only use I've found for it on foamies.
Experience trumps theory every time. Thanks for sharing your experience.

Does make me wonder about the type/quality of the magnets. and how hot they got. But bottom line hot glue and magnets don't play well together!
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Old Feb 27, 2013, 07:58 AM
GLMS
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Michigan
Joined Jan 2007
570 Posts
I was just trying to help, after spending two years designing magnetic tooling for a local magnetic work-holding company I learned a few things. Not an expert by any means but somewhat schooled in the ways of magnetism. My apologies if I had misspoken as it was not my intent.
Sorry Guys

John
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Old Feb 27, 2013, 08:03 AM
treefinder
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SE MI
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So now the trick is how do we know that little disk is a neodymium magnet or something else?
Incidently, on some of the smaller planes, I indent the foam with the magnet and put scotch tape over it. Works well with the little biscuit mags that Don has.
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Old Feb 27, 2013, 09:41 AM
treefinder
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Topics for tonight? Assuming we don't get 29" of snow in the interim!
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Old Feb 27, 2013, 10:26 AM
Doink-not again :)...aka Greg
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United States, MI, Sterling Heights
Joined Jul 2012
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Quote:
Originally Posted by springer View Post
Topics for tonight? Assuming we don't get 29" of snow in the interim!
Topics..... hummmm....Magnets -

Seriously though...

Sorry, I will not be able to make tonight’s meeting. Have not done any snow removal yet and need to get to it after work. Hopefully next time

So you can talk about me - ya know - good looking guy and all, can't read and comprehend, Ask to many questions ...

Greg
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Old Feb 27, 2013, 11:08 AM
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United States, MI, Oxford Charter Township
Joined Dec 2012
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I know you went over it last week, but I have a OSF that needs push rods installed.

Mike
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Old Feb 27, 2013, 11:21 AM
Joe The Ripper
United States, MI, Washington
Joined Sep 2011
766 Posts
Interesting magnet discussion. I use Gorilla Glue on my mags. However, are the quoted temps the point that it will "start" to affect magnetic strength or does it turn off like a light bulb and have no strength at that temp.?
Joe
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Old Feb 27, 2013, 11:23 AM
Joe The Ripper
United States, MI, Washington
Joined Sep 2011
766 Posts
For tonight's tech session can we talk about battery charging and battery life?
Joe
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Old Feb 27, 2013, 11:39 AM
treefinder
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control rods and batteries, sounds like a plan! (and magnets, and Mak!)

well, actually, that maybe just a suggestion, since we don't do plans! We keep the UN in club! (!?)
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Old Feb 27, 2013, 12:49 PM
Doink-not again :)...aka Greg
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United States, MI, Sterling Heights
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Quote:
Originally Posted by springer View Post
control rods and batteries, sounds like a plan! (and magnets, and Mak!)

well, actually, that maybe just a suggestion, since we don't do plans! We keep the UN in club! (!?)
Well I do have a topic I would like to discuss in a future meeting would be landing gear. Metal rod, alunimum, fiberglass and maybe Mike can show us how to make wheels .
Yea future meeting - My idea and yes, "it is all about me"
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Old Feb 27, 2013, 01:58 PM
treefinder
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SE MI
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Ok, we'll talk about doing that at a future meeting and talk about you too!......

Actually, it's a good topic, I'm sure we all have our fave gear setups, and they're probably all different!
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