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#11
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Woodstock spars
On Jun 21, 12:34 pm, Frank Whiteley wrote:
On Jun 21, 10:25 am, Bob Kuykendall wrote: On Jun 21, 4:41 am, MartyH wrote: Does anyone know where I might find enough Douglas Fir suitable for use for spars for the Woodstock 12 meter wing? I need pieces in the 12ft range. Does anyone know where I can have these spars made if I dont want to do them myself? This project doesnt go very far without spars! A few things to try: See if the plans include a notation about substituting spruce for doug fir. The spruce is a bit lighter and a bit weaker by volume, but I've seen several plans sets that show spar cap sizes for both spruce and doug fir so you can choose based on what's available in your area. The spruce is pricey, but you can get it from Aircraft Spruce and Specialty and Wicks. For a first-time builder, that's a good option for peace of mind. Have a look at R.S. Hoover's blog for good tips about getting usable aircraft-grade wood from (I'm not kidding) big box stores like Home Despot and Lowes. Note that he's mostly interested in shorter chunks for cheap puddle-jumping Chugger airplanes, but the same general principles apply. It could be that you can do that sort of thing with a few scarf splices: http://bobhooversblog.blogspot.com/ Try your question on the rec.aviation.homebuilt usenet newsgroup. There's at least a few folks there plugged into the wood supply situation. Welcome to the awkward overlap between r.a.h and r.a.s common to all sailplane homebuilders on the Internet. Join the HomeSail forum on YahooGroups and ask your question the http://groups.yahoo.com/group/HomeSail See where builders of Dan Rihn's One Design and DR109 aerobatic airplanes get their doug fir. As for having the spars made by someone else, I would try to dissuade you from that. It's not rocket science, and if you build the tail surfaces first you will have all the skills and tools you need by the time you get to the spars. If someone else builds them, you're just paying someone else to have your fun for you. Further, my recommendation are to stick with the 12m wings, build fast and light, and don't worry too much about the aesthetics of the stuff on the inside. Good luck! Thanks, and best regards Bob K.http://www.hpaircraft.com/hp-24 A few years ago, someone was looking at using the pultruded carbon rods for the spar caps on the Woodstock. I wonder if that went anywhere. It would seem an interesting adaption, especially with spruce. Frank Whiteley- Hide quoted text - - Show quoted text - Thanks Frank but I have no desire to deviate from the plans. The spars will be Douglas Fir. They may be laminated but they will be Doug Fir and then load tested. |
#12
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Woodstock spars
On Jun 21, 4:49 pm, Dan wrote:
On Jun 21, 4:41 am, MartyH wrote: Does anyone know where I might find enough Douglas Fir suitable for use for spars for the Woodstock 12 meter wing? I need pieces in the 12ft range. Does anyone know where I can have these spars made if I dont want to do them myself? This project doesnt go very far without spars! yes, contact Bill Scheunemann at that's Bill at woodwings.com He has the best Douglas Fir I've ever seen and has plenty of it. He can also mill the boards per your plans at a very resonable price. Good luck, Dan Rihn Rihn Aircraft Corp. Thank you Dan! I knew someone was still finding good stuff. |
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