32x40 H -- Gas Engine

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BRIAN

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• Jan 16, 2015

• #91

OK so its back to work
Looking around I found I had to many half finished job so I got into clearing up some of them.
The intermediate timing gear did not have a shaft so one was made and the gear planted.
the side plates had to be milled out to take the bearing retainer plates that I had not made yet??

So that had to be done.

Also the piston was not finished the blank had been made early on and lapped to the cylinder
but I kept making excuses to my self that I had not ordered the rings. so it was put to one side ( I still haven't ordered them ) "Do other's do this" ,
So find the blank and drill the wrist pin hole.


Turn the inside of the skirt.



Then mill out the recess for the small end,



Now fit it all together to see how it fits,





That looks Better.


Brian.

 

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BRIAN

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• Jan 18, 2015

• #92

Next step is the blank for the cam shaft.
Turned between centres so I can return it to the lathe after the cams are cut and reduce the shaft to fit the bearings
and the timing gear etc.



Next step will be on to the mill,with the rotary table, but its to cold at the moment for my brain to get up to working temperature for this job.

Brian.

 

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BRIAN

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• Jan 19, 2015

• #93

Hi ho Hi ho on to the mill we go, remove the 240° to form the base circle and we have a camshaft.






Slowly slowly Brian.

 

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• Jan 23, 2015

• #94

A few more photo's showing the cam sub assy in the rough. two drip oilers will be mounted between the can shaft supports on the flat plate to lube the cyl and big end.







Keeping going Brian.

 

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• Jan 28, 2015

• #95

The next problem was fixing the sub assy to the crank case with the correct gear alignment. a bit of a fiddle with a transfer punch and it was done.





The oilers arrived in the post so that gave me the next job drill and tap 1/4 x 40 and in they go pipework to follow.



Almost forgot the cam gear and the ignition timing wheel had to be drilled to take the grub screws for location during timing operations, final fixing will be by a end cap and screw.



I have made a start on the carburettor It's taken a long time on the CAD to get this so it looks as if it's going to work.

So I have started cutting metal by making the throttle body.



Brian

 

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BRIAN

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• Jan 31, 2015

• #96

Today has been a big day the valve retainers and pins made and the valves fitted.



The rockers made and fitted .








The rockers are going to be T beam in section and tapered toward the valve end so I have a little tidying to do but today it looks like an engine for the first time.
waiting for the plug and gasket material, then I can see what the compression is like.
Still a lot to do.

Brian

 

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BRIAN

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• Feb 2, 2015

• #97

Limited time in the shop today just to cold.

made progress on the carburettor.



Brian.

 

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BRIAN

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• Feb 3, 2015

• #98

Short time in a very cold shop today.
Managed to drill the jet holes for idle and main ,and make the venturi , this involved making a form tool to cut the internal shape. Hope for a better day tomorrow..



Brian.

 

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BRIAN

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• Feb 4, 2015

• #99

Made the mixture controls today and started on the outer end plate.
Did a quick fit up to see how it all goes.



Coming along.---Brian.

 

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BRIAN

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• Feb 9, 2015

• #100

The carb is getting nearer to a working item just the throttle leaver to do, still awaiting the diaphragm and valve for the gas demand valve.



Started on the feed system that takes oil from the drip feed into the big end. lots of head scratching to get this right.



The spark plug arrived today, How's this for a little darling.




Its moving on..Brian.