taped wings gorilla tape

[deyagis]

i taped my wings with gorilla tape the whole front edge and the ends of the wing . could this throw cog off alot. i think it will really help my wing survive my learning how to land good part. ive been landing on tallgrass . now im ready to land it on footbal field grass. how do i check my cog?

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[killioughtta]

That's not gonna stick for long! I've used that tape on an Air Boat and it does not stick well to foam. The very best is Scotch Strapping tape. It's reinforced, light-weight and stays on forever. And the best part? It's clear.

www.scotchbrand.com/wps/portal/3M/en_US/ScotchBrand/Scotch/Products/ProductCatalog/?PC_7_RJH9U52300LM30I87QR3ES18H7_nid=TWFM8NR10LgsV9FWH5FFP6gl0M8TV7V1Q0bl

It's the one that looks like it has strands of fiber-glass along the length of it. It won't tear and it's pretty good. That Gorilla tape is much stronger but it won't stay on and it's really really heavy.

[jbess]

From what I have found on the internet and discovered myself, the COG check has two parts:

First, locate your Center Of Lift, which is found at the largest camber of the wing (thickest part). I've measured it at 2.25" behind the leading edge. Measure and put a pencil mark, or sticker on that spot under the wing, about 3-4" away from the fuselage.

Second, put your fingers on those marks, and lift the plane. You can also create a hanger device from a wire hanger. Look at the tail of the airplane.

If the horizontal stabilizer is level with the ground, you are perfectly balanced. If it's off-level, move your fingers or hanger device until it is level. Measure the difference from the dot to the current balance point (Center Of Gravity). From what I've read, you only get about 1/4" fore and aft of the Center Of Lift (2.25"-2.75"). So if you are 2.6" you are a bit nose heavy, but within limits. If your COG is 2.8" you are too nose heavy. If your COG is 2.2" you are tail heavy.

It's ideal to move current weight or remove weight on the plane to stay withing the +/- .25" limits, rather than adding weight to the tail or nose to get a balance.