At 07:15 PM 10/10/2000, you wrote: >FlyBaby > >Let me be more specific...correct Luis...the distance >between front and rear spars, centerline to >centerline, is 27 in. in Fig 4-1. When Fig 4-2A, Full >size rib drawing, is taped together, the centerline to >centerline distance between spars is 26 5/8 in. >Thanks for the response Luis. > >Matt I measured 4-2A on a light table and my results also fall short of the 27" from spar centerlines as you mentioned (but only by 1/16 of an inch). The problem of using the templates provided is that, in most cases, the paper distorts and therefore it yields poor results. I learned this the hard way when building the Thorp. As they say, when you're done with your project you'll have a plane and a half. I don't know what can be done to fix your problem, short of making new ribs or using a thicker spar. Also, and please don't laugh, I've been stumped more than once due to a "cheapo" ruler. You may want to get a "second opinion" from a different one. This IS NOT an exact science, and reading some of the early articles written by Mr. Bowers will prove that point. Sorry I can't provide a good solution for you. Luis Hernandez Jr. CEO Payne Corporation MotorcycleShopper.com | MotoDirectory.com | MotorcycleBooks.com MotoSalvage.com | MotoMail.com | MotoBanners.com | MotoClubs.com Voice (407) 860-1989 - Fax (407) 574-1014 - eMail: mshopper@cfl.rr.com