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GREENLEY TUG BUILD THREAD 88"

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john greenfield
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Re: GREENLEY TUG BUILD THREAD 88"

Post by john greenfield »

Wayne
The tip is just a sheet of 1/4" (6mm) balsa sheet stuck onto the last rib and angled up at 45 deg. we do this by cutting the front and rear spars to the correct angle and just sticking the balsa sheet to the ends of the spars. Then, using the ribs as a guide, sand the balsa to the correct shape top and bottom before adding the ply sheeting to the wings. Ply sheeting is also added between the front and rear sheeting from the last rib out to the balsa tip.

Hope that helps.

AEB
AEB = Aeronautical Energiser Bunny (with thanks to CW)

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Barry_Cole
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Re: GREENLEY TUG BUILD THREAD 88"

Post by Barry_Cole »

This is the way I did mine.

I left the spars long, and cut the ends out of 1/8" balsa as per the drawing. The spar slots are not deep enough, but I just deepened them until it fitted at the correct angle I made then 45 Deg from the top surface. When they were glued in, I got a piece of about 2" wide timber 24" long, and stuck coarse sand paper on the last 6 ". The wood then rubbed on the main ribs, and the end got sanded to the correct size and angle. After sheeting I stuck 1/32" ply on the end, to stop damage in the event of a 3 point landing.

It's a nice place for stickers too.

:shock: :shock: :shock: :shock:

BC
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Stuart Ward
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Re: GREENLEY TUG BUILD THREAD 88"

Post by Stuart Ward »

That's the story, Wayne. Rough cut oversize and sand it with a long bar. Then ply the tip bays.
Stu

john greenfield
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Re: GREENLEY TUG BUILD THREAD 88"

Post by john greenfield »

Wayne
I notice that you did not cut a 45 deg angle on the bottom spars, they seem to be cut flush with the end rib. A 45 deg angle on the bottom spars would give more support to the tip but you can cut some 45 deg triangles from 3/8 balsa and stick them to the ends of the bottom spars to do the same job.

AEB
AEB = Aeronautical Energiser Bunny (with thanks to CW)

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Barry_Cole
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Re: GREENLEY TUG BUILD THREAD 88"

Post by Barry_Cole »

Ouch, and Yuk....

:cry: :cry: :cry: :cry:

BC

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Stuart Ward
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Re: GREENLEY TUG BUILD THREAD 88"

Post by Stuart Ward »

Ohhhh( cringe) in the words of my grand daughter "hurt ' morning"
Stu

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Stuart Ward
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Re: GREENLEY TUG BUILD THREAD 88"

Post by Stuart Ward »

Wayne Thompson wrote:
28 Mar 2019, 19:20
Stu is making a tow release for me then i can sheet the middle section etc
I had better get on and do that then

Stu

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