Re: leading edges

From: William Gowen <wdgowen_at_gmail.com>
Date: Mon, 4 Apr 2016 10:00:51 -0400

I didn't copy Emil but I don't claim my use as an innovation. It's just an
idea that makes sense for the A6 rules. I think my first use of the idea
was in 2005 or 2006.
On Apr 4, 2016 9:54 AM, "Warthodson_at_aol.com [Indoor_Construction]" <
Indoor_Construction_at_yahoogroups.com> wrote:

>
>
> The first time I saw the leading edge of a wing on an indoor free flight
> duration model rotated 45 degrees was on Emil Schutzel's A6, many years
> ago. He is not on this list, so I thought I would give him credit for the
> innovation & try to smoke out more discussion on how old this idea really
> is.
> Gary Hodson
>
>
> -----Original Message-----
> From: upwind120_at_gmail.com [Indoor_Construction] <
> Indoor_Construction_at_yahoogroups.com>
> To: Indoor_Construction <Indoor_Construction_at_yahoogroups.com>
> Sent: Sun, Apr 3, 2016 8:02 pm
> Subject: [Indoor_Construction] Re: Is there a simple way to lay out
> different camber arcs?
>
>
> Banana ribs…after I find the sweet spot on the french curve, I mark the
> chord on it with a Sharpie a tiny bit overlength (the ribs will be cut to
> the correct length later in the process). Then I move a little further
> along the french curve, toward the straighter end, and mark the chord in a
> different color. That becomes the bottom contour of the banana rib.
>
> Now I use the one template (the french curve) to cut tops and bottoms just
> by sliding it right and left on the blank. If I'm building a wing with a
> Gowan style front spar it's easy to make the front .08 (so I can notch it)
> and the back end .06.
>
> I'm working on a P-18 whose plan calls for the top of the front spar to be
> radiused, presumably for aerodynamic purposes. This further weakens the
> most vulnerable stick in the whole model. Rolling the square stick 45º like
> OlBill does is the natural solution.
>
> a.
>
>
Received on Mon Apr 04 2016 - 07:00:53 CEST

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