Building Hit or Miss Claire Engine
- Thread starter Jack B
- Start date
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Cut stock and started machining the Flywheel today. This will take a while. My stock is one inch thick and I have to make the width .750. There is also an indentation to cut on both sides. The finish diameter will be five inches.
Making a bunch of chips. This will do for today I will try to get back on it tomorrow.
Making a bunch of chips. This will do for today I will try to get back on it tomorrow.
The stock for the Piston is in the collet. It has been turned to the outside diameter size and faced. The hole being center drilled will finish up bored to size and with a square bottom. The fussiest part of making the Piston is the outside diameter to size with the Cylinder. The inside that takes more machining is just a nest for the Crankshaft Yoke. But it required more work.
First drill about 3/8 inch.
Second drill about 15/32
First drill about 3/8 inch.
Second drill about 15/32
Very nice work. Is there going to be a water jacket on that cylinder for cooling?---Brian
Hi Brian
Phil Duclos designed this engine without a water jacket. He also eliminated gears. I guess it will be quite different than other IC engines. I am holding my tolerances as close as possible. This is a first time experience with a small engine for me. Thanks for taking an interest. Jack B
Phil Duclos designed this engine without a water jacket. He also eliminated gears. I guess it will be quite different than other IC engines. I am holding my tolerances as close as possible. This is a first time experience with a small engine for me. Thanks for taking an interest. Jack B
Hi Brian
I knew there was some more information about this engine concerning the water jacket. The plans are covered in four Home Shop Machinist magazines. So I reread the article and here is what Mr Duclos said,"there is no water jacket to cool the cylinder". He also said,"the heavy walled cylinder acts as a heat sink together with the thick aluminum head and the spacer block situated below the cylinder". These items are shown above in my picture of the engine on the red back round. Jack B
I knew there was some more information about this engine concerning the water jacket. The plans are covered in four Home Shop Machinist magazines. So I reread the article and here is what Mr Duclos said,"there is no water jacket to cool the cylinder". He also said,"the heavy walled cylinder acts as a heat sink together with the thick aluminum head and the spacer block situated below the cylinder". These items are shown above in my picture of the engine on the red back round. Jack B
Hi Nick: Glad to hear from you. This is a much different animal then the last engine I made. There is a great deal of steel machining. I had my computer in and out of the repair shop the last couple of weeks so I had to be careful that I didn't goof up my posting. Everything seems to be ok now and the engine has enough parts on it to look respectable. Keep in touch. Jack B
The Yoke which is the next part is just a simple diameter and length of aluminum that fits inside the Piston. The turning is complete and the slot is being cut.
Edgefinder to pickup the center.
Center drill where the hole for the Yoke Pin will go.
Edgefinder to pickup the center.
Center drill where the hole for the Yoke Pin will go.
Drilling hole.
5/32 Ream.
The picture shows the finished Yoke along with the Piston.
A 5/32 rod goes through the two holes in the Yoke.
The shaft holds the Connecting Rod.
The Yoke is held in the piston by the 4-40 screw.
5/32 Ream.
The picture shows the finished Yoke along with the Piston.
A 5/32 rod goes through the two holes in the Yoke.
The shaft holds the Connecting Rod.
The Yoke is held in the piston by the 4-40 screw.
