Hi Randy, check out the E-Bay "Control Line and Freeflight" section. Do a search for "B-25". I'd post a link if I knew how to. Two plans are listed for sale, one a scale B-25 from M.A.N. Oct 62, the other a stunt scale by Paul Del Gatto. Both the size you mention and look like worthy projects. 8)
Also consider using RC plans or kits that have scale outlines, after converting countless RC kits and plans to CL scale it can be done. If you use RC kit or plans the hard part will be finding one that is the right size, the RC guys have been building larger models than what we normally would fly. Install a bellcrank and line guide like you normally would, wingtip weight and it will be a CL scale model.
the Koku Fan 3-view is really good and can be purchased from Bob's Aircraft Documentation
Royal kits had a B-25 but it has a lot of balsa blocks, not sure how accurate the outlines are on the kit
To fly with a pair of .35's keep the wingspan around 60-70" span.
This is the scale page we have on the Lafayette Esquadrille website
http://lafayetteesquadrillecl.wordpress.com/lafayette-esquadrille-cl/cl-models/scale/
Fred
Try this website: http://precisioncutkits.com/instock.html
There are several different B-25 laser cut kits for RC listed there,
both full and short kits. Shouldn't be too difficult at all to convert
to CL Scale.
Steve
Here is a link to Kitcutters for the same B-25
http://www.kitcutters.com/Pal/PalB25JMitch.htm
Fred
I have the ability to draw my own plans with cad but not the time for that lengthy a project. Just building something will be plenty!
Plans? Plans?
You've got the problem solved for now, but in the future all you need to do is print out one or two sets of 3-views like the one that Sparky posted, in the size you want. Then get plans for a similar model. Build to the outlines of the 3-views, using the structure of the similar model, and you'll never need to actually make fully detailed plans.
When I do this sort of thing I inevitably end up having to whack something out of the airframe and rework -- you'll minimize that by building to your "similar" model.
(Case in point: my current project is a 48" span Ugly Stick that I'm trying to get off my bench so I can build a Legacy. The wing "plan" is a strip of masking tape on my building board with tick marks at the rib locations. The fuselage "plan" is a piece of newsprint with just the rear fuselage taper penciled in, and the two rear formers drawn out. So far, my only "whack it off and start over" is a 1/8" strip of a fuselage former, to make room for the landing gear mount.)
http://www.ebay.com/itm/North-American-B-25-Billy-Mitchell-Scale-Radio-Control-Aircraft-Kit-by-Royal-/191394928336?pt=Radio_Control_Vehicles&hash=item2c9006d6d0#ht_473wt_1108
Check Ebay. There's a Royal RC B-25 for only $199. A great 70" wingspan kit.
Just a thought for something "different" in a B-25:
I built an Eureka B-25 while in Japan in 1958. I was pretty proud of it as it progressed, but a guy working at the hobby shop pointed out the B-25s had gull wings, mine did not, so I traded it away for something. Year and years later, I became aware that the first eight or nine B-25s were straight- wing dihedral configurations, my Eureka kit was probably ok, although I've never found another like that one. The spars through the nacelles set the dihedral (or gull wing), so what it is, is what it is.
I examined Ron Duly's B-25 Eureka kit and it showed only the gull wing and the parts were cut for that.
If anyone were to build a scale model of one of the first Mitchells, it would raise eyebrows, to say the least.
dg