Re: Re: Pietenpol-List: 1/2" web
Posted: Sat Mar 13, 2010 8:46 am
Original Posted By: Jim Ash
About a year ago when I priced it from both Wicks and Aircraft Spruce, the cost of the 1/2" center with four 1" x 1/4" capstrips was more than the cost of the solid spars, so I went solid and routed. Of course, the plywood center web may be cheaper, I did not price that. One question I could never get a good answer to is how/where the proper splices would be (building a one-piece wing). I would think that they could be anywhere as long as they were staggered. Of course, this would not be a problem if building a 3-piece where all of the components could be full length without splices. I like the built-up spars, the examples on here are beautiful, but cheaper and more original won out.Unfortunately, I did not weigh before and after routing, but I can tell you that the weight saving is substantial, not miniscule as some on here have suggested. Pietenpol says 25% and I think that is probably right. If it is wrong, it is low.Gene________________________________________________________________________________Date: Sat, 13 Mar 2010 11:06:12 -0500 (GMT-05:00)
About a year ago when I priced it from both Wicks and Aircraft Spruce, the cost of the 1/2" center with four 1" x 1/4" capstrips was more than the cost of the solid spars, so I went solid and routed. Of course, the plywood center web may be cheaper, I did not price that. One question I could never get a good answer to is how/where the proper splices would be (building a one-piece wing). I would think that they could be anywhere as long as they were staggered. Of course, this would not be a problem if building a 3-piece where all of the components could be full length without splices. I like the built-up spars, the examples on here are beautiful, but cheaper and more original won out.Unfortunately, I did not weigh before and after routing, but I can tell you that the weight saving is substantial, not miniscule as some on here have suggested. Pietenpol says 25% and I think that is probably right. If it is wrong, it is low.Gene________________________________________________________________________________Date: Sat, 13 Mar 2010 11:06:12 -0500 (GMT-05:00)