Author Topic: Wing spars ?  (Read 11556 times)

Offline PSweeney

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Wing spars ?
« on: February 14, 2014, 01:59:56 PM »
I've seen modern CNC aluminium ones for front wings, but how were they traditionally made ? 

dreracecar

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Re: Wing spars ?
« Reply #1 on: February 14, 2014, 03:37:20 PM »
A process called "HAMMER FORMING"

2 pieces of thick aluminum plate in the shape of the spar less 1/16" on one and the other one 1/4" smaller.

you then sandwich the spar material (5/8" bigger than the large plate) between the 2 plates and HAMMER the edge over the larger plate. flop the plates to get your lefts and rights

Offline PSweeney

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Re: Wing spars ?
« Reply #2 on: February 15, 2014, 03:07:18 PM »
thanks I thought about doing it this way but thought it may pucker on the curved edges,  think I may have more success making it out of two pieces, a flat spar clamped to a flat surface and then a 3/4in wide flat piece wrapped around the outer edge and tig'd ?

dreracecar

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Re: Wing spars ?
« Reply #3 on: February 15, 2014, 07:24:32 PM »
dont worrry about the nose of the spar, the curve of the skin has enough strenth to hold possision without rivets.

Ron Fourner has a basic metal fabrication book that goes through the process in detail

Offline janjon

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Re: Wing spars ?
« Reply #4 on: February 18, 2014, 08:05:26 PM »
Have you any references to airfoil shapes and how to lay them out?
Just keep the same amount of stuff on the right
as there is on the left. Seeing straight ahead is highly overrated....

Offline George

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Re: Wing spars ?
« Reply #5 on: February 19, 2014, 05:02:09 AM »
N & P sell the spars. We bought a "kit" and built our own wings.

Offline rooman

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Re: Wing spars ?
« Reply #6 on: February 19, 2014, 05:46:30 AM »
N & P sell the spars. We bought a "kit" and built our own wings.

I use Frank and Scott's parts too as it is much quicker than beating out a set of spars and the price is more than reasonable.

Roo
Yeah, I am from the south--any further south and I would have been a bloody penguin.

dreracecar

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Re: Wing spars ?
« Reply #7 on: February 19, 2014, 07:54:06 AM »
But whats the fun in doing that

Offline JeffV8

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Re: Wing spars ?
« Reply #8 on: February 19, 2014, 08:01:39 AM »
It saves on labor costs  ;)

dreracecar

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Re: Wing spars ?
« Reply #9 on: February 19, 2014, 08:08:00 AM »
As a company or service shop I would say yes, but for an individual that wants to make somthing themselves---its something to learn.

Offline JeffV8

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Re: Wing spars ?
« Reply #10 on: February 19, 2014, 08:24:31 AM »
I agree Bruce. I like to fabricate what I can..

Offline PSweeney

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Re: Wing spars ?
« Reply #11 on: February 19, 2014, 09:14:01 AM »
I like to do things myself too.  I'd been thinking about how I could make a wing then saw the CNC spars and I'm sure i'd have the job done in half the time and to a better standard if I went this route but thats not how I operate.  I take pride in turning perfectly good metal into scrap and occasionally producing a part I can bolt on my digger.   It's the curse of being a perfectionist with average abilities.... It's all fun and I enjoy learning even if it is the hard way sometimes.

Question for you all.....perspex or wooden front wings...cool or not ?  seen a  few, I like to use a variation of materials etc.  I know common sense and evolution would suggest aluminium but I like the little details and want to stand out from the accepted norm.


dreracecar

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Re: Wing spars ?
« Reply #12 on: February 19, 2014, 09:52:21 AM »
period correct Don Long front wing kit and also used as canards without the struts

Offline PSweeney

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Re: Wing spars ?
« Reply #13 on: February 19, 2014, 11:21:19 AM »
very cool thanks for posting