Can anyone tell me if there would be a awkward sizing problem replacing a kits 1/77th scale radials with 1/72nd resin replacements? The kit engines leave a bit to be desired and I would like to replace them. There are no cowls, the engines set open so no problem there. Any info or advise will be appreciated !!! Thanks .....

the 1/72nd parts are about 5.6% larger than 1/76th scale so will look a little larger, & may need fettling to fit.

1/77 scale?

My guess is an old 'box scale' kit.

Revell/Monogram Ford Tri Motor was scaled as 1:77 according to the box description.

Could work if you think 3 resin engines are worth the investment.

Cheers,
Joe

I've done a bit of measuring since I had an FW-190 BMW-engine in 1/72-scale handy. That one is 15 mm in diameter in 1/72, in 1/77 it would be close to 14 mm. I assume that the Trimotor's engines are a slight bit smaller in themselves meaning that the difference between the diameter it should be and the actual diameter of a 1/72 resin engine is less than 1 mm: you will get away with that!



Magnus

Thanks Guys, appreciate the help. Yes, the OLD Revell Tri motor....decided to try to make a silk purse out of a sows ear! Actually, was dared to try it.......surprisingly, having fun with it! I do less A/C than armor so its nice on occasion to step away from the rust and dust!!!

Although...these are some great engines !!!!!! http://www.smallstuffmodels.com/2018/01/new-small-stuff-72-pratt-whitney-engines.html