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Author Topic: Vintage FAI Power rules Q  (Read 494 times)
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Starduster
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« on: January 28, 2016, 01:42:22 PM »

I am putting the finishing touches on the Night Train Mk. VII for the short kit to be offered by Bob Holman plans.

I have a question, though:

According to the plan, the pylon is made of 3/8 Ply. 3/8 Ply is impossible for Bob to laser cut, so how should I solve this? I'm thinking about doing it with a 1/4 Balsa core and two 1/16 ply sandwich. But I'm not sure if this would be legal for Vintage.

So, what say you?

Thanks

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Tmat
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« Reply #1 on: January 28, 2016, 02:25:18 PM »

2 pieces of 3/16" ply?

Tmat
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glidermaster
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« Reply #2 on: January 28, 2016, 02:56:23 PM »

I did the pylons on both of my Night Trains from 1/4" ply, and built the thickness up with firm balsa.
Tony's suggestion is good, too.

John
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Starduster
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« Reply #3 on: January 28, 2016, 03:21:06 PM »

or, three X 1/8 ply? (according to my calculations that comes out pretty close to 3/8!)
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FF Bruce
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« Reply #4 on: January 28, 2016, 03:43:08 PM »

The Vintage rules don't go that deep as to using exact wood sizes.They want you to try and stay close,you can even go to two piece wings if you like.Don't change the airfoils or the out side shape and the Vintage FAI police will live you alone.   
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danberry
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« Reply #5 on: January 28, 2016, 09:03:19 PM »

It needs a pylon about 3/8" thick.........
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glidermaster
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« Reply #6 on: January 29, 2016, 02:40:20 PM »

How about some pictures Rich?
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