Five Cylinder Radial With Ohc

AT last positive news the assembly of the cages went smoothly , and I made three drill bushes to guide the drills when I open the ports in the cages, this gives me stages to inspect to see if the alignment is correct.
At this point I have decided that it would be wiser to continue work on these two heads just in case a design change is needed. so the (scrap) head will be used to test. followed by the first production head, only when I have a full working assembly will I continue with the other four.
I have done another slide video. but have made a mess of the titles for each slide I had it all OK but the upload swiped off all my work. However you can see it on my You Tube channel
( brian hogger ) I cant seem to get it to run from here.
The valve seats are perfect 45° .5 mm wide and concentric with the valve guide.
Brian.
two seats.JPG
 
Last edited by a moderator:
The next stage was to remove the location spigot and bring the head to it's correct length.
Then cut the last fin, this fin is not 180°, the rear of the head has a place for the bracket to hold the ignition sensor.
P1013258 (2).JPG


P1013262 (2).JPG

I think I now need two valves
Brian.
 
The valves are made over length and will be trimmed to size when the cam is in place so that's the next job
I think the cam box will come first So I will have to order the Oillite bushes .
Brian.
P1013266 (2).JPG
 
Brian, so as the valve/seat interface wears you will just trim the valve stem to compensate? Or are you using something like a shim-under-bucket adjustment mechanism? My apologies if you answered this somewhere earlier in your thread. :)
 
Hi Bill
Yes I have the option of both . the bedding down of the valve seat is often compensated by the cam settling
into its follower, and the valve settling into the inside of the follower, It is unusual for the lash to reduce, so a shim may have to be added inside the follower after it has all bedded down.
This also begs the question as to what part do you harden as you require a soft part running against a had one
I am thinking that hardening the follower bucket may be the best.
And you have no need to apologise , asking questions Is the life blood of the forum, and also my pleasure
in answering them, we all learn from it.
Brian.
 
Brian, I would say the valve stem and the bucket would need to be hard, The valve face is normally hardened a bit more than the shaft but both are wear areas. And the bucket against the valve will be the second wear area. not sure about the cam lobes. I may be wrong on this but that was my thinking. or thinking when not equipped.
 
Today I made a start on the cam box. the blank for the body was drilled then bored .
When it came to making the end plate I looked at the 12 1/2" Length of bar and wondered if it was possible to simply machine it without reducing the length,
so my 7x12 took the bar between the standard 4jaw and the centre, the end plate was machined on the end of the bar, then parted down to 8mm and cut off with a saw.
just for the fun of doing it.

Well we all have those day's don't we .
Brian.

P1013267.JPG

P1013268.JPG

P1013267 (2).JPG
 
Love following this thread. Keep it up Brian! :)
 
The next stage was to mill the box and end plate down to size, Having lifted the head of the mill to gain clearance for the rotary table and boring head. Now I had to lift my small vice high enough so the cutter would reach using the 3 2 1 blocks.
The box is now to size ready for the real work to begin.

P1013269.JPG






P1013270.JPG

Slowly Slowly Brian.
 
You must log in or register to reply here.
Back
Top