| Scale Models Built by Heller Davis |
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Casting kit produced by Midwest Model Engineering and is a 1/2 scale of a 1908 1 hp IHC Tom Thumb. Casting kit no longer available.
This model is a vertical gearless air cooled engine designed by Philip Duclos, drawings published in Home Shop Machinist magazine. The gearless design is similar to the olds gearless engine.
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This Woodpecker model is a 1/3 scale of the a 2 hp full size engine. Patterns & casting kits were originally designed & produced by the late Richard Shelly. Kit's are now being sold by MiniCastings. ________________________________________________________________________________________
The photo's below are of a 1/5 scaled down version of a full size Pratt & Whitney R-2800 Double Wasp 18 cylinder radial engine. Although every detail is not exactly to scale it is close enough to impress most. Prints are sold by Lee Hodgson at www.Agelessengines.com. The radial engine below was machined and built by my father (Heller Davis) from all raw materials with exception of one aluminum domed shape casting on the back of the engine. Materials used: Cylinders: L12 leaded steel, Pistons: 2024 aluminum, Rods: 6061-T6 aluminum, Rings: Cast iron, Valves: stainless, Most internal parts stainless, Bearings: ball & bronze. Engine spec's: 1. inch bore, 1.125 inch stroke, 6.7 to 1 compression ratio, 15.90 cubic inch displacement, 260. cc's, Horse power unknown, Weight: 18.750 lbs, Engine measures 11.250 inches in Diameter, 12.500 inches in length, Five main bearings. Oil System: Pressure oil pump, fully pressurised main bearings, fully lubricated cam drive gear, dry sump with scavenger pump. Prop size: 32x10 two blade. 1,100 hours of machining and building, Completed in just a little over five months. Started at the end of April finished the first of October, 2011.
The full size
R-2800 was used to power several types of fighters and medium bombers
during the war, notably the US Navy's F4U Corsair, with the first
prototype Corsair becoming the first-ever US fighter plane to exceed 400
mph in level flight during October 1940, the Corsair's naval rival, the
Grumman F6F Hellcat, the US Army Air Forces P-47 Thunderbolt, and the
twin-engined B-26 Marauder & A-26 Invader. Over 30 different planes
used the R-2800 engine.
Progress as of April 2011.
Finished & running October 1st, 2011 Aermotor 3/8 scale model of the original full size engine that
was manufactured by the Aermotor Co. Chicago, Illinois. The original
full size engine was designed to run a water pump just like you see in
the photos. Casting kit model of the engine and water pump produced by a
company called Pieces of 8 Cycle.
Bremen Caloric hot air engine. The original full size engine was
manufactured by Bremen Mfg Co. Bremen, Ohio.
Callahan Original full size engine was manufactured by
W.P. Callahan & Co. Dayton, Ohio. The model casting kit is produced by Cooper Tool & Machine Co. Flywheel
diameter is 11.312, bore is 1.500 X 2.770 stroke with a sideshaft cam.
It is a cam stopper engine. When the engine is up to speed the governor disengages the camshaft with the exhaust valve open and when speed
slows the shaft is engaged by the governor. This is how the speed is controlled. Four cycle engine and water cooled.
Canfield original full size engine manufactured by Canfield Gas Engine
Co. The model casting kit is produced by Debolt Machine Inc. It has 8 inch flywheels, 1.25 bore
x 2 inch stroke. It is a sideshaft engine and a four cycle engine. Water cooled. Has two exhaust.
Exhaust valve and rear exhaust port. Flyball governor.
1/2 scale Fairbanks Eclipse #1A model casting kit produced by T&S Model
Engine Works. Original full size Eclipse engine Manufactured by
Fairbanks & Morse Co. Beloit, Wisconsin.
Original full size Fairbanks Model "N"
engine Manufactured by Fairbanks & Morse Co. Beloit, Wisconsin.
The model casting kit is produced by Tom Stuart.
It is a one sixth scale of the 25 hp engine. The flywheel diameter is 9.875 with a 1.500 bore x 2.500 stroke. It is ignitor fired and water cooled.
Fuller & Johnson built from Ed Chick castings. (No longer available). It is a 1/3 scale of the original hit & miss governor engine. 2" bore x 2-3/8" stroke. The flywheels are 9" in diameter. Hopper cooled and ignitor fired. ________________________________________________________________________________________________
The first model on the left is a Associated Hired Man. The
castings are from Paul Breisch & Sons Model Works. (No longer in business). It has a 1-1/4" bore x 1-5/8"
stroke. Flywheels are 6" in diameter. It is hopper cooled hit & miss style.
This kit is produced and sold by Pacific Model Design, Bob Bromps. It is
a 1/4 scale model of a 4hp Mogul side shaft tank cool engine.
1/2 scale of a 2 Hp Fairbanks Morse "Jack of
all Trades". This engine is one of four prototypes that were made but never
sold as kits due to the large size & weight. Castings produced
by the late, Ed Chick. YouTube Video
Galloway 1/3 scale of the 5hp engine. The
original full size engine was manufactured by William Galloway Co.
Waterloo, Iowa. Model casting kit produced by Richard E. Shelly &
Sons.
1/3 scale model of the 6hp engine. Original full size engine
manufactured by Gray Motor C0. Detroit, Michigan. Model casting kit
produce by Cooper Machine & Tool Co.
Hagan 1/2 scale model of the 2 hp engine. Original full size engine was
ma
The Nanzy model is built from Russell Snyder castings.
It is air cooled hit & miss with spark plug ignition
Panther Pup is a four cylinder, four cycle, air cooled engine built from Bill Reichart castings. It has a 1
Perkins 1/2 scale of the full size tank and air cooled versions. The original full size engine was manufactured by
the Perkins Wind Mill Co. Mishawaka, Indiana.
The Ryder Ericsson is 1/4 scale of the full size engine. Casting kit model produced by Myers Model Engine Works. The flywheel is 8.875 diameter. Propane is used to
heat the hot end in firebox. Water cools the top end.
The model is a Starite 1/3
scale of a full size 6 hp engine. The patterns were made by a
Canadian man who scaled down his original full size 6 hp Starite engine and had a friend who was a foundry worker
make the castings. I think there was four sets made. My Dad and
his friend machined and built all four engines. Two of the four
finished models were for the Canadian man. The models were built from photographs and critical dimensions taken from
the original 6hp engine. We had no prints at all. It is hopper cooled, spark plug ignition, hit & miss with 1-3/4"
bore and 2-1/2" stroke. The flywheels are 8-1/2" diameter. I
don't believe the casting kits are available.
Baker (Monitor) 1/3 scale of the 4hp engine.
Original full size engine produced by Baker Manufacturing Co.
Evansville, Wisconsin. Model casting kit produced by Pacific Model
design. Model has a 1"-5/8 bore x 2" stroke.
Radial engine is a seven cylinder built from plans in
Strictly Internal Combustion magazine. The engine is called "The
Jemma". Bore is .750 x .800 stroke. It is a 4 cycle engine and uses spark plugs, not glow plugs. The top
end is lubricated by mixing two cycle oil with the fuel. The bottom end runs entirely in sealed ball
bearings and needs no lubrication. It swings a 20 inch prop. at 6000 rpm. Completely scratch built.
No castings used machined
from raw materials.
Th
Stirling tractor was built from plans in Home Shop Machinist magazine. Uses alcohol for fuel and is water
cooled.
The little blue horizontal steam engine is a model 10H from Stuart Turner castings. The green
Two cylinder vertical steam engine model
was built from plans in ModelTec magazine. Has poppit valves (cam operated) for the intake and ported exhaust.
Built from bar & flat stock. |
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