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Five Cylinder Radial With Ohc

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OK the drawings are done and the cylinders will be machined Later.
Meanwhile I have started on the valve cages again. I have decided to do one at a time very carefully
rather than try to do them all in a batch. also I will only do one on each head at a time to allow time for the loctite to cure before attempting the other. this way all the heads will have time to cure before the next machining operation.
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Only seven more to go.
Brian.
 
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Life is about to get easier for you Brian. Longer in time but easier in machining. Good choise of operations.

"Billy G"
 
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At last I have something to report, the valve cages are in and the seats cut, Inlet and exhaust ports drilled to match. So the next job is the valves , Then cam boxes and cam shafts ETC.
I have bored out one of the cylinders to the new size 26mm and all looks good so the other four will follow as and when I find the time.
The photograph shows parts made to date, The items in front of the complete head are the felt oiling pad to lubricate the cams and it's cover.
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Slowly slowly Brian.
 
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The other 8 valves are now done, the final trimming to length will be done when the valve lash is set.
The next job will be the 4 camshafts, then the cam boxes.

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Onwards and upwards Brian.
 

34_40

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As alway.. Marvelous work Brian.
 
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Just to keep you up to speed, I made a start on the camshafts today.
Parted off the stock to the correct length and centre drilled the ends
so I can turn them between centres.
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P1013283 (3).JPG

Brian.
 
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Today I turned down the blanks, using my favorite roughing tool then trimmed up the edges . and started setting up the mill to form the cams.
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I may try to video this we will see how it goes.
Brian.
 

wrmiller

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A video would be really cool Brian! :)
 

Dataporter

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Wow, machinist and videographer! Nice video Brian.
Dave
 

kvt

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That is nice, Nice work on both the engine and the video.
 

Bill W.

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Brian, many of us start out on small machines... you are an inspiration to all of us.
Thank you,
Bill
 
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The next stage was to make the end plates that carry the front cam bearing.
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All four made a light push fit in the cam box

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Next reduce the cam box to its finished height, the dimension from the base to cam centreline must be spot on because this affects the cam belt tension.
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Three more to do and all the fussy work with the cam followers.

Slowly slowly Brian.
 
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To bring the cam boxes to size I have changed the tooling to a fly cutter fitted with an indexable
tool from the lathe ,It's doing a great job, speeded up things no end and the finish is good.

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Brian.
 
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Four cam boxes to size awaiting the next operation.

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Brian.
 

wrmiller

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Nice. I like the finish left by the fly cutter. Did you make the holder for your lathe insert?
 
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Hi Bill . The holder is from an " economy " set I purchased about 8 years ago It's seen more work than I care to think about, still trying to wear out the original tips.

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Brian.
 
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Todays work was to cut the holes for the cam followers .
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The next job will be the access holes in the side of the cam box, cylinders No's 1 5 4 have the holes on the right and No's 2 3 on the left looking from the front of the engine.
Brian.
 
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Time for a rest and catch up on all the jobs I have been putting to one side, or simply ignoring.
And think about ordering the materials for the next stage.
So if I don't post on this thread for a while don't fret I will be back.
Brian.
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kvt

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Brian, It looks nice, I was beginning to wander it you had stopped for the summer, since had not seen any more on the progress, for a little while. Hope you get caught up and your materials come it ok. This is an interesting build,
Will continue to watch for when you start in again.
 
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I am off to Scotland next week to see the grand children and teach them how to run the 32x40 gas engine.
I will also be collecting the material for the crankcase and gears of the Radial, ready to start work next winter.
Brian.
 
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Hi all
Back from the holiday with loot in the baggage, this is the material for the crankcase ----crank case bulkhead-----gear case ---belt case- ---- rear bulkhead-- and the gear shafts,
I think this will keep me occupied for the coming winter.

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Brian
 

kvt

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Wait, you had to go all the way to Scotland to get your materials. What US stuff is not good enough.
Welcome back and looks like you will have fun.
 

wrmiller

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Nice find Brian. Those should do nicely. :)
 
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Hi all
Ken. for the record I live in Sicily in the south of the island only 80 miles across the Med from North Africa (Tunisia)
so the U S is a long way away. Locally it is hard to find material , On mainland Italy you can get a ton of anything but not six inches, so I usually order from the UK and suffer the postage.
The temperature has been to high for me to venture outside and the coolest place is the workshop so I have been starting on the crankcase. bulkhead. . the first job was to make a reference surface. the piece is to large to go in the lathe. and only fitted in my Cheepo mill vice after removing the jaws. but in the end we got it done.P1013339.JPG

Next stage was to flip it over and mark the centre.

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The centre was punched then the mark enlarged with the Archimedes drill. this method allows you to correct any error if necessary

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The job was then transferred to the mill and centred with the Co Axial indicator ready for drilling and boring to fit the spigot on the Jig.

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That's it for now maybe a little tomorrow

Historical Note
Archimedes lived in in the port of Ortega in east Sicily and was killed when the Romans besieged the city.

Brian.
 

kvt

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Now I see why you purchase things any time you go somewhere. If you had to pay the postage on I can really see it., I was stationed in the UK for a while, and the postage was something else at that time.
How thick is that bulk head going to be, It looks pretty beefy from the pics.
 
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