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How to build model airplanes >> Building Scale/Semi Scale Model Engines >> Engines that I have built
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Message started by John M Oshust on Apr 4th, 2014 at 2:11pm

Title: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:11pm
I hope that you will not mind if I collect and post a few pictures of various scratch build engines that I have constructed since starting this hobby. Starting with my fist build a Guillows camel
Camel_1.jpg ( 260 KB | 4 Downloads )
Camel_2.jpg ( 263 KB | 2 Downloads )
Spirit_1.jpg ( 245 KB | 2 Downloads )
Spirit_2.jpg ( 250 KB | 1 Download )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:14pm
My first engines were quite heavy and contained a lot of metal parts.  At first I adapted hardware store items to fabricate engine parts.  Over the years I have "lighted up" a great deal and hand make most parts.
BG_1.jpg ( 279 KB | 1 Download )
BG_2.jpg ( 276 KB | 2 Downloads )
Clerget_6.jpg ( 289 KB | 2 Downloads )
Clerget_9.jpg ( 299 KB | 2 Downloads )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:16pm
I really prefer making radial of rotary engines.  Though I have tried my hand at inline and V variants.
Engine_8_002.jpg ( 267 KB | 3 Downloads )
Exhaust_2.jpg ( 217 KB | 1 Download )
P47_1.jpg ( 161 KB | 2 Downloads )
P47_2.jpg ( 138 KB | 4 Downloads )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:20pm
I have really grown found of WW1 aircraft so I guess most of my future wok will involve rotary and inline engine construction.  The design and fabrication of abstracts of power plants of this type does get easier the more you attempt it.
Soptrip_1.jpg ( 262 KB | 3 Downloads )
Soptrip_2.jpg ( 257 KB | 0 Downloads )
Spirit_1_001.jpg ( 245 KB | 2 Downloads )
Spirit_2_001.jpg ( 250 KB | 1 Download )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:26pm
Whether the engine has 5, 9, or twelve cylinders, I have learned to start by making a prototype cylinder.  Once that is decided upon you start a production line to fabricate the required parts.  Clear reference diagrams and photos are the  key to abstract engine construction.  I use the term abstract because I have no desire to replicate the engines exactly.  I wish to represent their mechanical complexity without machining exact miniature engine duplicates.
Stear_1.jpg ( 305 KB | 0 Downloads )
Stear_2.jpg ( 300 KB | 3 Downloads )
Stear_3.jpg ( 252 KB | 1 Download )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 4th, 2014 at 2:30pm
My third model was one of a Ford Trimotor.  Here the production line approach was helpful in fabricating 3 radial engines. If you all do not mind I will continue posting engine photos when I have extra time.  Ta ta!
Tri_1.jpg ( 286 KB | 2 Downloads )
Tri_2.jpg ( 267 KB | 2 Downloads )
Tri_3.jpg ( 279 KB | 4 Downloads )

Title: Re: Engines that I have built
Post by Tom Akery on Apr 4th, 2014 at 5:54pm
WoW....JohnO,

Great collections of engines....thanks for sharing them with us.  Please continue to give pointers as you post more pictures... I need something like the Sopwith for my Nieuport.
Tom

Title: Re: Engines that I have built
Post by John M Oshust on Apr 5th, 2014 at 2:56pm
I shall attempt to present a sequence to a radial engine build.
The cylinders, in this case a PVC fitting.  At $1.50 each or so a nine cylinder engine gets pricy. Find suitable material for a crankcase and lay the cylinders placement out. Arrange the cylinders as exact as possible. Balsa valve covers and Al tubing push rods. Flex straw intake manifolds.
Engine_1_003.jpg ( 34 KB | 4 Downloads )
Engine_2_003.jpg ( 59 KB | 2 Downloads )
Engine_3_004.jpg ( 51 KB | 4 Downloads )
Engine_4_001.jpg ( 54 KB | 2 Downloads )
Engine_5_003.jpg ( 45 KB | 3 Downloads )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 5th, 2014 at 3:04pm
A coat of primer and things start looking good. The exhaust manifold appears. Some color and TLC .
Engine_6_004.jpg ( 57 KB | 2 Downloads )
Engine_7_003.jpg ( 52 KB | 3 Downloads )
Engine_9_003.jpg ( 55 KB | 4 Downloads )
Engine_10_003.jpg ( 67 KB | 2 Downloads )

Title: Re: Engines that I have built
Post by John M Oshust on Apr 5th, 2014 at 3:12pm
Color separated the piping systems.  Almost ready for an install. Engine installed and prop fabricated...props are another thread for the future.  If this thread is helpful I shall continue.
Engine_11_004.jpg ( 60 KB | 3 Downloads )
Engine12.jpg ( 51 KB | 4 Downloads )
Paint_7.jpg ( 79 KB | 3 Downloads )

Title: Re: Engines that I have built
Post by Tom Akery on Apr 18th, 2014 at 10:38pm
Thanks JohnO for posting these engines.  Great stuff and very informative, and very inspirational.  Amazing detail that makes a model come alive!!!

Well done!
Tom

Title: Re: Engines that I have built
Post by John M Oshust on Feb 7th, 2017 at 5:14pm
My lastest radial. The number five cylinder has an oil leak
IMG_1657.JPG ( 225 KB | 1 Download )
IMG_1658.JPG ( 249 KB | 1 Download )

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