Landing Gear Mounting -- Funtana S90 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 07-01-2007, 01:26 PM   #1
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Landing Gear Mounting -- Funtana S90

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OK -- I landed in the tall grass and tore off the landing gear.

The Funtana is a really light construction, which I guess is needed if the overall weight of the plane is a major consideration, but that's not an issue for me as I don't do 3D.

So -- I cut a piece of 6mm plywood to run between the former that holds the engine box, and the first former towards the rear -- approx 18.8cm long. I used "Gorilla Glue" to hold it to both formers and to the blocks on which the original landing gear pad was mounted.

I do believe that the way this has been constructed, if I were to do another extra hard landing it would do considerable damage to the fuselage. At least the original construction, although weak, broke off without damaging the fuse in any significant way.

My question is this: given that metal bolts and blind nuts are so strong, would it be possible (or wise) to use wood screws instead? My thinking is that on a hard landing the screws would simply pull out of the plywood rather than break everything apart.

Alternatively, how about nylon bolts with blind nuts? If this seems like a good idea, what size? (probably #8 or #10 -- say about 1/8" dia?).

Thanks for any help!


PS: I know -- don't land so hard......
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Old 07-01-2007, 01:34 PM   #2
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I had a Giles that was prone to loosing it's landing gear. i thought along the same lines as you, and installed nylon bolts. They sheared on a slightly bumpy landing. I'd avoid the nylon bolts.

The Funtana's slow down so much, you should be able to almost set it on the runway. My Mini Funtana had the same issues as yours, and I just beefed up the ply area a bit, bolted the gear on, and learned to bring it in much slower than I was used to.

Good Luck.
Michael Gyger
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Old 07-03-2007, 10:54 PM   #3
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landing nose high tail wheel first is the key to keeping the gear in a litely built plane ive found.
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Old 07-03-2007, 11:03 PM   #4
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I agree..the funtana lands super slow! repair the damage and fly like it never happened! most likely won't hit the tall stuff again!
happy flying!

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Old 07-04-2007, 02:55 PM   #5
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I use #4 x 1/2 self tapping screws to hold a two piece alum gear on a 9 lb RV3 with 3 screws on each piece. If it is one piece I would use four screws. If I pull out the screws on a rough landing I use #6 screws. If again, I plug the holes with some pointed 1/8 dowel and med CA and start over. In canada we are lucky; we can use robertson screws.
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