Hi Grandadjohn. Saw your discussion here about 1:48 UH-1F/P and thought I would see if you found any answers. I'm trying to kit bash a UH-1P starting with the Monogram Huey Hog UH-1C, with parts from a UH-1D/H. From what I've read on several forums so far, the most logical progression is to use the C model cabin, the D model rotor assembly with the longer (48' scale) diameter, the D model boom and tail assembly added to the aft of the C model cabin.
I've seen the Italeri UH-1D/H and for the life of me couldn't make out much difference in the tail boom of the D model to the C model. One thread I followed on another forum said he added a section of the D model boom to the C model, and had issues with differences in the model kits' dimensions in that area, requiring a lot of putty and sanding work. Unfortunately the thread was an old one ('07) and was not completed, so don't know what untimately happened.
I've search for dimensional data on the F/P models, with no luck. There are plenty of schematics without data or scale references, which raises the issue of incorrect aspect ratios of the graphic file. I've located a schematic with data of the UH-1M, and created an overlay of it with a schematic of the F model. At least this gave me a starting point with which to compare the two airframes. While not a perfect overlay, it does give some proportional information.
My concern is the accuracy of this method. What dimensional data I've seen uses varying points of reference to measure by. Using the overlay, I'm measuring from the cabin/boom connection joint to the apex of the rudder fin on the boom. That gives me a measurement of the relevant part of the boom that has to added. By my calculations, using combinations of several of these like images, I'm estimating the F model tail boom to be between 36" and 42" longer than the C/M models. Would you concur with this deduction, or do you have more information.