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Early Aviation
Discuss World War I and the early years of aviation thru 1934.
Replacing 1/77th engines with 1/72nd ?
swede82
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Alabama, United States
Member Since: October 24, 2013
entire network: 135 Posts
KitMaker Network: 23 Posts
Posted: Wednesday, January 17, 2018 - 12:15 AM UTC
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 .....
jon_a_its
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England - East Midlands, United Kingdom
Member Since: April 29, 2004
entire network: 1,336 Posts
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Posted: Wednesday, January 17, 2018 - 12:43 AM UTC
the 1/72nd parts are about 5.6% larger than 1/76th scale so will look a little larger, & may need fettling to fit.
Cantstopbuyingkits
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European Union
Member Since: January 28, 2015
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Posted: Wednesday, January 17, 2018 - 05:30 AM UTC
1/77 scale?
md72
#439
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Washington, United States
Member Since: November 05, 2005
entire network: 4,950 Posts
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Posted: Wednesday, January 17, 2018 - 05:37 AM UTC
My guess is an old 'box scale' kit.
Grauwolf
#084
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Quebec, Canada
Member Since: September 14, 2005
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Posted: Wednesday, January 17, 2018 - 06:26 PM UTC
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

magnusf
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Stockholm, Sweden
Member Since: May 02, 2006
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Posted: Wednesday, January 17, 2018 - 11:41 PM UTC
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
swede82
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Alabama, United States
Member Since: October 24, 2013
entire network: 135 Posts
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Posted: Friday, January 19, 2018 - 12:06 AM UTC
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!!!
swede82
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Alabama, United States
Member Since: October 24, 2013
entire network: 135 Posts
KitMaker Network: 23 Posts
Posted: Saturday, January 20, 2018 - 11:05 PM UTC
Although...these are some great engines !!!!!! http://www.smallstuffmodels.com/2018/01/new-small-stuff-72-pratt-whitney-engines.html