Sorry for the tag on again but I got back into my original thoughts on where and why this is important. I have been on this net for at least 20 years now and I can't even think of how many times lengthing has been discussed. So many times the answer was "add a bay". I really thought this is heading for trouble for someone someday. adding a 14" bay to the rear certainly changes the W&B. lacking a common reference point it just is unusable information. Ultimatly from the measurement exercise I would hope that safe flying examples are gleaned from the information. The next step would be to have actual W&B numbers for each... but yet that has it's own problem in that practically no one usees the same datum point on their plane. I know I used the spinner tip so I had all positive numbers to work with. In any case there is certainly examples in the archives somewhere that were well thought out with the W&B taken into account and in some very well documented cases additional length was added to the foreword bays from the main spar. If I get enough of these cases documented the information should become understandable and useable for many years to come. Thanks guys Joe Horton
----- Original Message ----- Subject: KR> fuselage dimensions Hello Guys, Below is a copy of a post I did in Feb of 2016 and again now because of the on going confusion of terms. I have about 12 sets of numbers form folks on the net. But as I had said in follow up messages that year I would like to have many more flying or not. I choose the foreward face of the main spar as a data point to make it easy to hold a tape measure to and should be no confusion as to where the comparison comes from. There are 2 lists started one for the KR2 And one for the KR2S. not surprising from the dimensions I already have there was almost no one that had a "to the drawings dimension" not even my to the plans KR2s. I will gladly finish the chart if I could get another 8 or 10 guys to send dimensions. I just don't have enough to make a true data point reference. I didn't rally talk to Mark L about it yet but he has the one performance page with a lot of information on it from a survey years ago and it seems that may be the right place to add this information. Joe Horton, n357cj Copied from 2/2016 Hey guys, After thinking a little bit more I see that this can still be real confusing to anyone reading any of this in the future. Here is what I propose.... Anyone that can (flying plane or not) take a measurement from the front side of the main spar to the back side of the fire wall plywood and take a second measurement from the front side of the main spar to the point that the tape measure touches at the tail-post intersection at the rear floor position of the fuselage. Basically a center-line of the plane profile. This will give a full length as well as a break down foreword and aft of the main spar for multiple planes. It is also a location that should be accessible for almost every KR built. I guess it would help if with the dimensions I could know if it is a KR2, KR2 modified, KR2S, KR2S modified E-mail them to me privately at [email protected] and I will make a chart up showing all the dimensions relative to each other and assign them to a N number for future references. Pretty sure Mark L. would link it to KR net for us. The end result of this exercise I would hope to have real factual dimensions instead of the subjective add this to that or the other and it flies great. I also am still believing that we are all pretty close together with only a few out-layers in the statistics. I'll do both of mine tonight Thanks for the help. Joe Horton - _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]
