Engines > Restoration of Model Engines
The number 173.
Michael S.:
hello Jo, thanks for the translation. I didn't even think about that when I chose the picture.
Michael
Michael S.:
The main flaw on the model was the crooked cylinder on the frame. The builder himself had problems with it. He tried twice!
I changed the holes from M 5 to M 6 and sealed them with bolts and glue. Then smoothed in the lathe.
That worked quite well.
propforward:
You are doing some really good work there - that is a fine model and once you have corrected it and made the missing parts I think it is going to be a super engine. Very nice save on the cylinder!
Michael S.:
Now the new holes should come to the right place. I used the front cover of the cylinder as a template. It is held in position with short screws on the frame. The cylinder is clamped to the lid with Teflon tape and can be aligned and marked with the right angle.
Now the cylinder with cover can be carefully removed. The holes are marked with additional clamps. Then you can drill and tap the thread. This is not the super accurate method, but it worked quite well.
Michael
Zephyrin:
these beautiful castings needed indeed this expert work of restoration...
30 mm and 50mm stroke, that is pretty large for a model !
An odd point is that I don't see any steam port or passage in the extremities of the cylinder, are they cast in and open deeper into the cylinder ?
an opening in the middle of the cylinder is visible...an oiler or some sort of uniflow port ?
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