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Tom Phillips Broken Arrow, OK email@example.com
Red Wing Replica 11/12/2006
Here are some pictures of the Red Wing Replica that I have just finished along with pictures of a couple changes I made to the plans.
To get some experience in machining and building from plans, I decided to purchase a casting kit from Red Wing Motor Company in Arkansas. (http://www.redwingmotor.com/) I used an old model “T” ford coil for ignition, reconditioned it with new points and adjusted it.
I am using a 12V. lead acid battery 6Amp. Mounted with the coil in a red oak box on the rails of the same red oak material.
I made a few modifications to the plans as I went along.
First - I made the valves one piece (instead of two piece) as it shows in the picture.
Second – instead of soldering the piston pin bearing to the rod shaft, I made the shaft and pin bearing one piece using a brass bearing per my own design. (also one of the pictures)
Smaller modifications were made as well as sanding the rough castings smooth before painting. I used acrylic enamel automotive paint instead of epoxy.
The rails and box are my design. Inside the box is a second lid that has an LED lit off/on rocker switch and charging posts, the battery and coil are under this second lid. I am using the original design ignition ground post to fire the coil.
The bore is 1.250” and the stroke is 2” and is fed fuel by a Lunkenheimer style mixer. The flywheels are 8.25” with a ½” keyed main bearing crankshaft. Compression ratio is 5.8 – 1.
I used the original front ring (steel) and a double lip square cut Viton rubber second ring. It will hold the compression without leaking.
This is a good running engine because of the large flywheels compared to the bore and stroke. Also the bearings are oilite and oiled with synthetic non-detergent oil with 5 percent WD-40 in the gasoline. It has very little friction and will coast about 10 revolutions before hitting again.
Copyright 2006, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.