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L.E.

Old 02-22-2005, 07:55 PM
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RobT
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Default L.E.

What is the best way to get the leading edges to have the same radius?

Thanks

Rob
Old 02-22-2005, 08:34 PM
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khodges
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Default RE: L.E.

I sand the first one to whatever is required, and then make a template of the profile, and sand the second one, stopping frequently to fit the template and see where the second LE is compared to the first one. It takes a bit longer on the second LE, but you'll get an exact match. Be sure to measure along the full length.
Old 02-23-2005, 12:34 PM
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Montague
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Default RE: L.E.

A long, straight sanding bar helps a lot.

How accurate you need to be depends a lot on the airplane as well. Believe it or not, most sport planes are more than fine just using the ole mark 1 mod 0 eyeball (or mod 1 for those with the laser job done ).

The template thing is the way to go if you want it perfect.
Old 02-23-2005, 06:53 PM
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Default RE: L.E.

I agree with the template idea, except I make a template from the plan first and use it one both leading edges.
Dennis-
Old 02-24-2005, 08:38 AM
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RobT
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Default RE: L.E.

What if the plan only gives the cross section at the root?

Rob
Old 02-24-2005, 09:45 AM
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Default RE: L.E.

I did the eyeball method for years until I tried something new with my current project. I took a 3/8 scrap of MDF and made two templates of the leading edge from a cross section of the plan. Took the templates and tacked them onto each end of the wing then sanded it with a long bar sander. In the end it was dead on and maybe a little quicker than the old method.

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