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Post by statiiic on Apr 16, 2010 13:52:32 GMT 1
Not sure if this thread has been created yet, but I've heard you can secure the wing to the fuselage using these powerful earth magnet sort of things, does anyone have an experience with that? It would make for a very nice scale appearance.
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Post by ginginho on Apr 16, 2010 14:00:36 GMT 1
Not sure if this thread has been created yet, but I've heard you can secure the wing to the fuselage using these powerful earth magnet sort of things, does anyone have an experience with that? It would make for a very nice scale appearance. Personally I've not tried it. I would think you'd need quite large (or lots) magnets and would still be very wary of any high G maneuvers such as pulling out of a dive. An alternative if you are attempting a scale look would be to use some wing bolts similar to those used on MPX models or on the PZ Mustang. This would require some modd'ing such as adding a suitable plate inside the fuse fitted with nuts that the bolts could screw into. You'd probably also need plate on the top of the wing to spread the load so that the bolts don't pull through the foam. |
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Post by flydiver on Apr 16, 2010 14:33:46 GMT 1
Securing wings with magnets is for the butt-joint type that fit into a slot like the Easy Star or Easy Glider. When new they don't need the security but just like the wing saddle in the Cub gets beat up so does the slot so you end up needing to tape it or put in the magnets. Magnets don't hold it on, they just keep it from sliding apart.
No way will magnets hold a wing like the Cub on during a high-G maneuver.
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Post by Dillzio on Apr 16, 2010 14:55:40 GMT 1
I've been thinking about it myself actually... I just got these off ebay so I can make a basic prop balancer in a vice: 50 x Disc Rare Earth Neodymium Magnets N50 3mm x 2mm cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=300410121262The plan is to attach a few of the magnets together, and put them either side of a vice so you can use the vice to perfectly adjust the distance between them. I was planning to get one of the $4 prop balancers from headsuprc. I'd think that by putting three or four each side of the wing saddle it should be secure enough, but still, how would you feel if you saw you fuselage separate from the wing mid-flight because your magnets let go? |
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Post by skivit48 on Apr 17, 2010 4:06:01 GMT 1
If that ever happens to me. (it won't b/c I'm not going to use magnets for that.) If I ever did though and that happened, I would hope that someone had video of my face when it did.  |
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Post by anbupunk on May 19, 2010 3:16:05 GMT 1
that would be priceless haha ;D
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Post by starboy on Jul 24, 2010 0:58:33 GMT 1
It would not be difficult to find NIBs powerful enough to not separate under high flight stresses and yet be light enough to not adversely effect performance. I have done a few projects using them and they are immensely strong for their weight, especially the flat discs.
Mounting them would be the big challenge. You'd need to epoxy them to studs or something that went through the foam and distributed their load over the opposite side. For the wing that wouldn't be too hard but I'm trying to imagine how you'd go about mounting the opposing set of magnets to the fuse. Maybe if they were epoxied to metal clips that wrapped around to the underside?
Anyway, the key challenge will be separating the wing from the fuse deliberately without breaking or crushing the foam. It would come down to selecting the right size magnets - strong enough to hold in any flight conditions, but weak enough to pull apart easily enough when you want them to, such as for dis-assembly or in a crash.
If my SC didn't fit in my trunk so nicely with the wing attached I might be willing to give it a try. Sounds like an interesting engineering challenge with potential commercial rewards!
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Post by leisureshoot on Aug 8, 2010 12:52:32 GMT 1
I'm much more inclined to attempt nylon bolts through the wing top, with nuts mounted to wood inside the fuse
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Post by coupe1942 on Sept 2, 2013 16:07:23 GMT 1
I use the rare earth magnets for camera mounts on various applications. They are very strong, so be careful in getting any fingers between them as they snap together in a heartbeat. In fact, they are strong enough that my fear would not be holding a wing during flight, but in them holding the piece so tight that there simply is no give in the foam and thus more chance of cracking off pieces of foam in a crash. Believe me, if the rare earth magnets I use can hold a large pipe wrench up, then I am pretty sure they can hold a foam wing during any g-forces. It also depends upon the magnet, as to size and if the corners are beveled to it. Ceramic magnets would not hold up to the pull or g-force, unless you were using the large 95 lb ones, but a good quality super magnet or rare earth magnet is a different story. In using them to snap on a cowl or a canopy, they would require just too much pull to make the removal an easy one for the flyer. Just my opinion on them, but I have used them quite a bit on various camera mounts for my car.
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