Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-03 Thread Steve Lange
Bill Swingle wrote: Now that we've discussed this at length, has anyone noticed that the magnetic force is not actually suited to this application? Meaning, any displacement of the parts involved reduces the attractive force significantly. But, what is really called for is the opposite characterist

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-03 Thread Andrew E Mileski
Bill Swingle wrote: Now that we've discussed this at length, has anyone noticed that the magnetic force is not actually suited to this application? Meaning, any displacement of the parts involved reduces the attractive force significantly. But, what is really called for is the opposite characterist

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-03 Thread Paul Emerson
Good point. It is overkill, and as soon as the magnets are separated a little bit, they lose most functionality. Also remember that these magnets are (relatively) easy to slide apart, so if the plane part in question is sheard off - it will just slide away. Their real force is felt when separating

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-03 Thread Bill Swingle
Now that we've discussed this at length, has anyone noticed that the magnetic force is not actually suited to this application? Meaning, any displacement of the parts involved reduces the attractive force significantly. But, what is really called for is the opposite characteristic. Thus, to make u

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread MSu1049321
Velcro tabs not enough to keep the tips from sliding off? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email se

RE: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread lomcovak
Technically yes, but probably not enough to cause RX operation to deteriorate enough to be a problem. Again, the old adage is a rigorous range check if you have changed or modified soemthing that has the potential to alter RX sensitivity. Quoting Steven Bixby <[EMAIL PROTECTED]>: > > I'm

RE: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread Steven Bixby
I'm curious - would rare-earth magnets in close proximity to receivers, servos, or wiring have an effect on radio range or radio operation???

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread Simon Van Leeuwen
5 21:32:42 -0800 > > To: "Zb. Michalczyk" <[EMAIL PROTECTED]> > > Cc: soaring@airage.com > > Subject: Re: [RCSE] Rare earth magnets as wing retention devices? > > > > I have a couple of 3" x 1.25" x .75" rectangular neodymiums, if they &g

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread John Erickson
L PROTECTED]> > Organization: Radius Systems > Date: Tue, 01 Mar 2005 21:32:42 -0800 > To: "Zb. Michalczyk" <[EMAIL PROTECTED]> > Cc: soaring@airage.com > Subject: Re: [RCSE] Rare earth magnets as wing retention devices? > > I have a couple of 3" x 1.25&q

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-02 Thread David Nasatir
Is there an easy way to compare the shear strength of a magnetic wing hold down with that of a nylon bolt without actually doing the physical testing? Martin Usher wrote: >I have a question. Do two apposing magnets generate twice the force or should you use a small low weight steal attraction p

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Simon Van Leeuwen
Lange" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 01, 2005 2:35 PM Subject: [RCSE] Rare earth magnets as wing retention devices? One more question: anyone tried using large rare earth magnets as wing retention devices on wings with plug-in wing panels? I know that these are routinely

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Martin Usher
>I have a question. Do two apposing magnets generate twice the force or should you use a small low weight steal attraction plate? (John and Linda) Two magnets will grip a lot stronger than a magnet and steel plate. If the magnets are set up so that both poles are used (small horseshoe type) the

[RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread John & Linda
View Dr > Afton, VA 22920 > > 540 943-3356 > fax 943-4178 > 540 943-3356 > - Original Message - > From: "Steve Lange" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, March 01, 2005 4:35 PM > Subject: Re: [RCSE] Rare earth magnets as

RE: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread John & Linda
View Dr > Afton, VA 22920 > > 540 943-3356 > fax 943-4178 > 540 943-3356 > - Original Message - > From: "Steve Lange" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, March 01, 2005 4:35 PM > Subject: Re: [RCSE] Rare earth magnets as

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread TJB
- Original Message - From: "Steve Lange" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 01, 2005 4:35 PM Subject: Re: [RCSE] Rare earth magnets as wing retention devices? Zb. Michalczyk wrote: rare earth magnets are not made in large sizes for some reason Actually, I&#x

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread TJB
t;Steve Lange" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 01, 2005 4:35 PM Subject: Re: [RCSE] Rare earth magnets as wing retention devices? Zb. Michalczyk wrote: rare earth magnets are not made in large sizes for some reason Actually, I've found a wide array of sizes availab

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Steve Lange
Zb. Michalczyk wrote: rare earth magnets are not made in large sizes for some reason Actually, I've found a wide array of sizes available from the following provider: http://www.wondermagnet.com/ I got some that are 1" long by 1/2" wide and about 1/4" thick...whoa! I can barely pull them apart!

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Zb. Michalczyk
ROTECTED]> To: Sent: Tuesday, March 01, 2005 2:35 PM Subject: [RCSE] Rare earth magnets as wing retention devices? One more question: anyone tried using large rare earth magnets as wing retention devices on wings with plug-in wing panels? I know that these are routinely used for hatch and canop

FW: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Bruce Hobbs
Here's a thought.the safest aircraft is one that never leaves the ground or can fly at all.so prepare your aircraft to withstand clipping trees, buildings, slow moving cows, wind shear, bad pilot decisions, etc. and pretty soon it is so heavy that it won't ever be damaged.'cause it's su

Re: [RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Paul Emerson
I have use these on a smaller (100" span) model 3 piece wing. Just get the mixed pack from: http://www.kjmagnetics.com/ And epoxy the best size in face to face with a piece of wax paper between. Takes a little faith, though. On Tue, 01 Mar 2005 11:35:08 -0800, Steve Lange <[EMAIL PROTECTED]> wrot

[RCSE] Rare earth magnets as wing retention devices?

2005-03-01 Thread Steve Lange
One more question: anyone tried using large rare earth magnets as wing retention devices on wings with plug-in wing panels? I know that these are routinely used for hatch and canopy hold-downs and similar, just wondering if people have tried them in place of snap-type wing locks or hook & band