you know if you go into the archives this is a question that keeps coming up. and it doesn't matter, you're going to get a banana boat no matter what you do . As soon as you pinch the tail in to the tail post, your sides are not going to be flat to your leveled table no matter if you laid your longerons straight or not. It's a fact of life. and you could work it out to try to make the top longeron straight which it wouldn't be in reality. There are a couple thousand banana boat KRs flying that fly straight. Rather than get hung up on whether the fuselage top longeron is straight, the consideration is whether the engine is straight on a lateral line and the wing and tail incidences are as they should be to an established lateral line. You could go the the rocket science route or just do what's worked for all the successfully flying KRs that have been flying for more than 30 years now. If you get hung up on details like whether the top longerons are straight or not ,you'll never finish your airplane. Do what has worked for many others before you, it's all in established lines and is all based on X,Y,Z axis. My 2 cents worth and by no means the definitive answerMartindale Family <johnja...@optusnet.com.au> wrote: Hi Noel
It's a geometric fact. Imagine a playing card stood up on a flat table along its edge. Flex the ends and then tilt it.The centre raises off the table. Either work with it, leave your sides at right angles or, as some have done, adjust your fuselage uprights to create a curved longeron that becomes straight when you stand it up and tilt it for the taper. I think Mark Langford's site might have the lengths of the uprights needed to achieve this.....or search our archives. Most people just live with the banana and use a right angle to their firewall as a fixed reference to work off. John Martindale 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 (H) 61 2 66869075 (W) mobile: 0403 049990 email: johnja...@optusnet.com.au web: www.members.optusnet.com.au/johnjanet/Martindale.htm ----- Original Message ----- From: "Noel Bong" To: "KRnet" Sent: Saturday, November 11, 2006 4:47 AM Subject: KR> Re: fuselage question > Greetings! KR gurus, > I am trying to put the fuse sides together with a taper bottom. It is > upside down on the table, is it normal that the middle section of the > longerons are lifting up from the table top for about 1" or so, this means > there will be a dip on the middle section of both longerons when the fuse > is turn rightside up? Do I have to force them to be perfectly flat on the > table? I'm afraid I might break them if I do that. > > Thanks for your input. > > Noel Bong > Anaheim, CA > noel_gene...@yahoo.com > > > > Truly, > > Noel Bong > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
