chris willis wrote:There is no problem with the foam wing or spars, all that was being asked was how to measure G, as people are probably aware this is about one of my designs, the wheel and retract unit remove a big chunk of the wing from front to back, as its a prototype wing loads are being looked at, i have one full spar, one half length spar and a smaller l/e spar, I am perfectly happy with the construction on mine, the construction design that i use on my foam wings is very strong, had some very heavy landings with my tiffie and not moved anything on the wing, as for fibreglass, i have seen retracts torn out of them, I would opt for decent foam wings any day myself.
Ken Bones wrote:Ok, so how would you support the wing and add 270lbs to it to see if the wing could take that weight?
Ken
chris willis wrote:Is that 270lbs of weight spread across the entire wing, or one spot.
Chris
Ken Bones wrote:Ok, thought i would try and put some weight on the wings tonight whilst round at my mate Daves house. Anyway over a few beers and stuff we decided that we must both weigh about 270 lbs. So we balenced the wing in the kitchen and sat on it. At this point Daves cat walked under the wing, just as it split( the wing, not the cat) and the two of us fell on the cat.
Now, Daves a big bloke and he now has really hurt his elbow.
The cat is ok though.
The wing should be back together once I get down the model shop to buy some cyano
Bonzey
Andy Boylett wrote:Looks to me like you need for each side:
one small wife approx 86lbs
a child of approx 38lbs
a small dog approx 9lbs
and the cat, approx 2lbs
Then see if you can get them to sit still. You have an issue with the cat sat next to the dog. At leats if the wing fails the cat is on top this time .
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