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HomeScaleAircraftScale HeliScale Helicopter Main Discussion › Magnets Strength on Scale 600
06-02-2009 05:42 PM  9 years agoPost 1
BladeStrike

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Shelby Twp, MI

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how strong should the magnet be that are used to hold a 600 scale body together. Magnet would make replacing batteries so much easier.

Bls

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06-02-2009 06:11 PM  9 years agoPost 2
Hoverup

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Golden Gulf Coast - USA

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Obviously strong enough that the removable part of the fuselage doesn't separate in flight or during run-up. Don't mean to be a Smart A**, but it's difficult to answer a question like yours without using engineering units that measure the strength of magnets. Magnetic field strength is measured with two units, the Gauss (G) and the Tesla (T).

I strongly suggest that you forget the convenience of magnets and secure the removable portion of the fuselage with more traditional methods involving fasteners like machine screws and blind nuts. It's the only way to be sure.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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06-02-2009 08:52 PM  9 years agoPost 3
BladeStrike

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Shelby Twp, MI

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Hoverup

your suggestion although very valid would make changing batteries every 5 minutes a royal pain for an electric scale. Someone suggested high strength Neodymium Magnets N52, from what I've read they are very strong (even dangerous).

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06-02-2009 09:12 PM  9 years agoPost 4
Crewdogg998

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Michigan

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I use 1/2 inch rare earth magnets from Hobby lobby (the craft store) to hold the front of my Century Hughes 500 on. Put a dab of silicone on a magnet then attach to fuse. When it is pretty firmed up do the same for the other side. The newly silconed magnet will center on the first one. Make sure you have the polarity correct before you attch them! Ask me how I know.... Crewdogg

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06-02-2009 09:21 PM  9 years agoPost 5
GrantL

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Springfield, MA

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Long Ranger
I also use 1/2" earth magnets to hold the front of my LR on..
I've got 8 pins that line up the front to the back and earth magnets hold it there very securely.

Grant

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06-02-2009 09:42 PM  9 years agoPost 6
axemanclint

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Cypress, Tx. USA

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I too am working on a method with some rare Earth magnets on my Scale Koala fuse in order to be able to take the nose on and off to replace the 600E battery. undoing screws would not only be timely and annoying, but will wear out the fuse over time weakening the screws strength to hold and will probably strip out the hole as well.

"what goes up must come down," hopefully in one piece!

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06-02-2009 10:11 PM  9 years agoPost 7
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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i used rare earth magnets to hold the front prtion of the cowling in place as well as the guns and rockets on my airwolf and the doors are held closed the same way on the 58D.
i pretty much have to pry the front coling up from the body on the airwolf and it holds up to the mach 1+ speeds

drive a rotary, fly a rotorcraft

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06-02-2009 10:27 PM  9 years agoPost 8
Hoverup

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Golden Gulf Coast - USA

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Hoverup

your suggestion although very valid would make changing batteries every 5 minutes a royal pain for an electric scale. Someone suggested high strength Neodymium Magnets N52, from what I've read they are very strong (even dangerous).
If you are changing flight packs every 5 minutes you got bigger issues than magnets.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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06-02-2009 11:04 PM  9 years agoPost 9
helibuff

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Mascouche, Quebec, Canada

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Copter Doctor
i used rare earth magnets to hold the front prtion of the cowling in place as well as the guns and rockets on my airwolf and the doors are held closed the same way on the 58D.
i pretty much have to pry the front coling up from the body on the airwolf and it holds up to the mach 1+ speeds
Could you give us a link were whey can by them please

Yvon (Helibuff)

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06-02-2009 11:24 PM  9 years agoPost 10
Adam Tashjian

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Boylston, MA (the pay state)

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You can get rare earth magnets at radio shack.

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06-02-2009 11:54 PM  9 years agoPost 11
Hoverup

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Golden Gulf Coast - USA

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http://search.ebay.com/search/searc...nets&category0=

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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06-03-2009 12:43 AM  9 years agoPost 12
flyboy0413

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Brookfield, CT

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This is a good place to find magnets. They have every size imaginable. Reasonable prices too.

http://www.kjmagnetics.com

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06-03-2009 01:04 AM  9 years agoPost 13
doorman

rrProfessor

Sherwood, Arkansas

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Magnets
I buy mine about once a year here:
amazingmagnets.com

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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06-03-2009 02:19 AM  9 years agoPost 14
geker

rrApprentice

lykens,PA

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mcmaster-carr would be another good place to get some they carry just about every. you could think of. and do sell to everyone usually an order placed before 5 eastern time and you have it the next day

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06-03-2009 11:17 AM  9 years agoPost 15
Crewdogg998

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Michigan

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Any crafts store should have them!

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06-03-2009 12:18 PM  9 years agoPost 16
Rckfish

rrVeteran

Little Rock,AR

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Bladestrike,
Radioshack has them. On my Jetranger I used magnets, but to Hoverup's point, I was concered about separation in flight.

Along with the magnets I used (1)RC Car body retainers on each side. So I have the ease of battery change with magnets and the added protection on a body clip on each side. Pulling the canopy front works great...very quick.

Works great.
Rckfish

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06-03-2009 01:00 PM  9 years agoPost 17
chopper37

rrVeteran

NJ and Long Island

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Magnets
Does anyone have a picture on how they installed the mag. With the side flanges needing to be flush did you recess them and back the flang up? pics would be great

Thanks

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06-03-2009 01:21 PM  9 years agoPost 18
BladeStrike

rrApprentice

Shelby Twp, MI

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Thanks for the responses guys

I got some Neodymium N52 magnets from kjmagnetics and oh my they are strong . It takes so much force to pry them apart . I may have went overboard with the N52's. Now I have make sure that the magnets are secured to the fuselage with strong epoxy.

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06-03-2009 02:14 PM  9 years agoPost 19
flyboy0413

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Brookfield, CT

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You can reduce the separation force by gluing a spacer so that the magnets don't touch. The thicker the spacer, the lower the separation force.

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06-05-2009 12:02 PM  9 years agoPost 20
Crewdogg998

rrApprentice

Michigan

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Mine are mounted on each side of the fiberglass lip. They never touch but are still pretty strong. Between the alignment pins and the magnets the fuse has to be carefully seperated.

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HomeScaleAircraftScale HeliScale Helicopter Main Discussion › Magnets Strength on Scale 600
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