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wing strut materials - 7/18/2003 2:42:57 AM   
ilbcnuairborne


 

Posts: 21
Joined: 6/27/2003
From: Wilton, CT, USA
Status: offline 		Looking for appropriate material for wing struts. "V" struts, not cabanes. Hope to find something of appropriate size and shape for a 1/4 scale aircraft. Aluminum, spruce, bass or whatever. Will have to be about 26" long minimum.
       Post #: 1

wing strut materials - 7/18/2003 3:16:46 AM   
Roadkingofskies


 

Posts: 16
Joined: 6/20/2003
From: Lockport, IL, USA
Status: offline 		Woof,

I was in need of spruce also. One of the moderators gave me this link. Hope it helps. They sell spruce cut to dimensions by the foot.

http://www.aircraftspruce.com/catal...s/menus.wp6.php

They had exactly what I needed for a 40% I'm building.

Jim

(in reply to ilbcnuairborne)
       Post #: 2

wing strut materials - 7/18/2003 3:51:12 PM   
Highflight-RCU


 

Posts: 597
Joined: 2/28/2003
From: Houston, TX, USA
Status: offline 		Spruce has been the standard for areas requiring structural strength for may years. However, good Spruce is getting harder to find and more expensive.

So it came as a surprise to me that Basswood is almost identical to Spruce in it's load carrying ability. I've been using Basswood instead of Spruce for spars and wings struts in my giants (including a 1/3 scale Nelitz Cub) for many years.
There's a chart I saw somewhere that compares the two in various ways and, again, they are almost identical in the ways that are important to us.

The only trick is that, just like with Spruce, you want to pay attention to finding clear material with straight grain.
And unlike Spruce, it's a lot easier to find and a heckuva lot cheaper too.

Highflight

(in reply to ilbcnuairborne)
       Post #: 3

wing strut materials - 7/19/2003 3:24:51 AM   
bennydh-RCU


 

Posts: 2
Joined: 7/8/2003
From: California
Status: offline 		Hey what about molding fiberglass around foam? Or balsa? I use shaped aluminum Im thinking maybe 26" of aluminum could be unnecessarily heavy, same goes for spruce, when glass and carbon fiber are options now days. Its just an idea Ive thought about trying myself. Just havent done it yet!

(in reply to ilbcnuairborne)
       Post #: 4

wing strut materials - 7/19/2003 6:35:14 AM   
BMatthews



Posts: 9004
Joined: 10/4/2002
From: Burnaby, BC, CANADA
Status: offline 		If you're worried about the grain runout or other wood quality issues with spruce or bass or whatever then just use it as the fairing for a music wire core that properley takes the tensile stress.

Use two 1/2 thicknesses with the wire at the 1/4 chord point. Bend the eyes into the ends and solder as required or use something a little heavier and solder over a 3 or 4 inch length to a bicycle spoke to accept a 2-56 clevis. Other options should be presenting themselves by now if I haven't hit the nail on the head.

Wire take tremendous tensile loads but in compression it'll be the wood that will prevent it collapsing so design accordingly.

< Message edited by BMatthews -- Jul 19 2003 1:43AM >

_____________________________

Witty saying to be plagarized shortly.....

(in reply to ilbcnuairborne)
       Post #: 5

Strut material - 7/19/2003 7:53:37 PM   
Sea Commander



Posts: 18
Joined: 11/8/2002
From: Powell River, BC, CANADA
Status: offline 		Check the Sea Commander site. We make and sell structural streamlined aluminum tubing. It is made from aircraft grade 6061-T6,with .035 wall. It's much stronger and lighter than most other material on the market.

Gord Whitney
Commander R/C Models
http://www.seacommander.com

_____________________________

The bitterness of poor quality remains long after the sweetness of low price is forgotten

(in reply to ilbcnuairborne)
       Post #: 6

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