Eaton 8 HP

Specs are:
 the T.Eaton Co limited Toronto and Winnipeg sn# 711 8 hp @ 275 RPM Bore X Stroke= 6 X 12" Built in 1911/12 Flywheels are 36½" diameter.

Because of the large number of pictures on this page I've used thumbnails on this page.
Click on a thumbnail to see a full-size picture. 

Head already removed, the cylinder wall is in very bad shape, so it has to be bored to oversize. A new piston will be cast for this engine. On this picture the new crank-guard it mounted, the original was broken, so a new was cast. It's too long on this photo but it will be made at the proper length later.

The engine has a crank, but I sure would not dear to use it on this size engine. It is 340 Cubic inches. I can only imagine what can happen if it's not in a friendly mood..

Stripping the engine down.

We poured a new big-end bearing, and machined it to fit the crankshaft on the lathe.

Cylinder boring setup.
The bore was very badly pitted and needed to be bored. Since it is one casting, there was no workshop in our vicinity who could do the boring. There was one shop about 80 miles from us who could do it but it was far from "hobby price" to do it.
We decided to try and do it ourselves. We made a set-up and used big bronze bearings at both ends to support the 3" boring bar. It was very important to have the bearings exactly in the center of the cylinder to keep it straight!

The cutting tool will be driven by a Ridgid pipe thread cutter.

Rear bearing, this is where the tool bit is adjusted.

Front bearing

This are the two gearboxes we used to turn the feed.
Both are 30:1, so the total is 900:1

This is the old piston and the new piston. 
The new piston needs some work at this stage.

First I machined two "rings" so I had a smooth/round surface to have the steady. After the steady was set-up I could machine the head of the head of the piston and drill a center for further machining.

Here the steady is setup. As you can see the steady is "homemade".

Machining the inside.

Reassembling the engine again.

The engine's horse power is cast into the crank-guard.

The Eaton ran for the first time in ??? years on December 2 2000. It feels good to hear it running after so many hours of work!

The new piston in the new cylinder.

Eaton just prior it's (2001) new years run.

Eaton New years run 2001.

The Eaton is now about finished. We tend to keep it "as is" for now.

Here it's driving the Tangye pump, the Eaton is more than capable for this job!

Sad but true, we sold the engine in 2001. We needed space (and money) to have a (in our opinion) better engine. A 7 HP Stickney. Fortunately a good friend of has it now so we are able to see it quite often at shows.

Question's or comments?    h.terpstra@wxs.nl