Homebuild CG machine
03-17-2003, 06:47 PM
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Homebuild CG machine
I know someone has the link out there, and I would too if I'd learn to bookmark the things I think I might need. Not too long ago I happened across a website where a guy had a bunch of tips on how to build stuff like wing jigs and CG machines. Well, unfortunately I cannot find that website right now and I'd really like to. I've seen tons of sites showing how to make one that hangs from your ceiling and you use rope, but this one was made from wood and arrow shafts and looked a LOT like a certain name brand balancing tool. If anyone out there happens to have this link, I would appreciate it. Sorry I don't have better info to go on.
03-17-2003, 11:02 PM
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Cg Machine
In reguard to your wanting to make a CG machine. I used a 2X6 and cut two squares measuring 6"X6". In the center drill a hole in each of the 6"X6" pieces so that a pencil will fit tightly into the holes. Whala you have a Cg machine that has padding on each end (erasers).
Works great for me.
Works great for me.
03-17-2003, 11:34 PM
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03-18-2003, 04:22 AM
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Homebuild CG machine
This is what you are looking for. This has a construction article for the "Tinker Toy Balance Jig", named for the way that Tinker Toy's were assembled with dowels in drilled holes. There are construction articles for a lot of other useful tools and field equipment.
R/C Flight Unlimited
R/C Flight Unlimited
03-18-2003, 02:22 PM
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Homebuild CG machine
Lightfoot, you are right, that is exactly what I was looking for. Thank you very much. And thanks to everyone else for helping me out on this one. Now I've just got to bet mine built.
03-18-2003, 11:51 PM
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Homebuild CG machine
Pretty good stuff at this link also...including a cg machine http://www.uoguelph.ca/~antoon/hobby/bjig.htm
B-
B-
03-20-2003, 10:45 PM
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Homebuild CG machine
The accurate way that I found to balance a plane is to lift it from the horizontal position on its CG points with two fingers to see it drops nose or tail, then you can add weight accordingly to get correct balance. I have tried hanging my planes from the ceiling as it was mentioned in the post above , put on the useless GP C.G. machine but nothing has worked more accurately as the method I mentioned.here. Keep it simple
03-22-2003, 01:03 PM
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Homebuild CG machine
Setting the C of G has to be an enjoyable experience or your just not going to have the veal to do it right. So here is what I do. Remove two beer from fridge. Explain to wife how you need the beer for your hobby. You need the bottles only so drink the beer. Now tack a piece of triangle stock to the top of the bottles and and place under your models desired c of g. Now to calculate the amount of weight and where to put it will take some thought so you'll need some more beer.....
03-23-2003, 10:47 PM
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Homebuild CG machine
I found Another little interesting way of getting around all the RC sites (some useful some well I won't say) Check out the RC webring.
http://www.modelflight.com/rcring.html
http://www.modelflight.com/rcring.html
03-24-2003, 03:12 AM
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Homebuild CG machine
Q-Ball, I really like your machine, since I have been lazy and still haven't built any of the other suggested ones, I might end up doing this one. One question, what did you use on the top of the poles? Looks like just plywood or something, just not sure. Did your round it or anything?
03-24-2003, 01:34 PM
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King
On the top is 1/8 hard ply.Something thin but hard..On top of the hard ply is a piece of fuel tubing slipped over the top edge. The pvc is 1/2 inch. Another pix of the top. It works perfect..Walt
03-24-2003, 01:42 PM
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King/Another thing
In the first pix I sent. The uprite pieces of pvc that you actually sit the plane on fits into a T at the bottom.Only one side of this T is glued.That way you can rotate the leg in or out in case you want to balance a larger or smaller plane.You can spread it wide or narrow.Have a good one'....Walt
11-23-2003, 04:52 PM
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RE: King/Another thing
I know this thread is older, but has anyone made a homemade prop balancer?? I see there are a lot of homemade CG machine, but what about a prop balancer?
