Eagler's Nest
Airframes => Single Seaters => XL => Topic started by: Keith Silva on October 08, 2014, 09:45:01 PM
-
Hi:
Drawing No. 8a for Station No. 1 shows the 13.5 and 11.5 dimensions from the outside of the tubes. Drawing No. 4 seems to indicate the same. However, drawing No. 6 says all dimensions are from the center of the tubes. So, is the Station No. 1 layout based on dimensions to the tube centers or outside edges?
Thanks, Keith Silva
Legal Eagle XL D-89
-
Keith, all measurements are to the center line.
-
So, is the Station No. 1 layout based on dimensions to the tube centers or outside edges?
Thanks, Keith Silva
Legal Eagle XL D-89
Kieth, I'm guessing your long past this area and question and it was also already answered correctly but I thought I would splash a bit of water on this for all tube and fabric planes in general.
I don't know of any plans where tube stations or locations are not called out to the center line of the tube. This facilitates laying out your weld table or if you use sliding jigs like mine (V-blocks slide on parallel rails-for multiple aircraft building) You can measure to this center mark and then devide your tube dia. in half. Thus your known placement will be dead on.
Of course most of these planes will allow a fudge factor, but if you always shoot for right on the mark, you will be good to go at the end. We all know about how important it is to keep things square, but many have gotten off in the past as they have squared off of one station to the next. Any little error along the way then gets compounded. Alway use a center line from nose to tail and never waver from it, per station.
Not pointing out anything new here, just passing on general info.
Best of success.
Scott Weinberg
irondesignairparts@gmail.com