Member postings for Dalboy

While making the Farm boy I needed something to support a piece which overhung the vice so I knocked this little beastie up. Sorry slightly out of focus

And I thought that drilling a 0.036" was bad enough to take a 1/32" split pin

Made the rocker arm pivot pin but I feel that it needs shortening as when it is put through the support for the rocker the split pin is about 1/8" away from it. The pin was made to the measurements on the plan

Rocker support in place I need to make a small flat on the bottom so that a grub screw has somewhere to grip as well as keep the support at the correct angle for the exhaust valve

Finally got around to the rocker arm and a small steel bearing which will push on the exhaust valve. As can be seen it is just a fraction over 1 1/2" long.

Next job the rocker arm support

Could some of these wooden clock plans be converted to metal

being a new metalworker someone will correct me if my thinking is wrong so here goes how low in the vice is it being held. would holding it just by the lower section where no material is being machined away stop this happening, that is to say no pressure on the top closing it up. I know that vices for milling machines are meant to hold square.

Hope that makes sense

Very little done today just the valve spring keepers, made from stainless steel the measure 0.400" X 0.125" with a 0.125" hole for the valve stem, and also sized a small piece of brass for the rocker arm ready to be drilled and machined.

I have just ordered one Steve but thank you for the offer

Thank you Jason for that info it just seems to be missing on the plans. All it said was 1/4" X 32 TPI so I assumed it was ME thread

Edited By Dalboy on 01/08/2023 21:27:24

Except for the spark plug thread which is 1/4" X 32 and I only own a 1/4" X 40 which I seem to have a lot of, so have to order these are ME threads. The head machining is now complete, time to start on some of the furniture for the head like making valve springs and rocker assembly. In the last photo(sorry about the quality) you can make out where the inlet and exhaust ports enter the valve guides. The four holes which can be clearly seen in the bottom of the head photo are for head bolts, the other hole seen in the top of the head is for the rocker arm support and the little hole in the side for a grub screw to lock the support in place.
It seems as if everything turned out OK as closer to completion of the head I was worried that if something went wrong there is a lot of work to get back to here.

Been working on the valve guides as these need to be inserted in the head before some holes need drilling

Shaped the outside was the first job as well as drill and ream for the valve stems to fit. You can see that the bases are not yet opened up in the second photo.

Changed to a collet chuck so that they can be opened up note the bull nose cutter in the drill chuck to give a rounded bottom to the inside

All complete and pushed into the head. They are not going to move now not only can I now drill some holes into the valve guides from the side but they also will aid in getting the at the correct angle as well allow for lining up the fuel chamber where the spark plug pokes through into the cylinder. As well as this it will aid lining up the angled threaded hole for the spark plug which I spotted earlier on in the head(see previous post)

Slid the valves in just for show, I will fit these properly when I have made some more parts for the head

I like the part where it states

Used: An item that has been previously worn. See the seller’s listing for full details and description of any imperfections. See all condition definitions

This does remind me of a cartoon where the customer is pointing at what he wants on the shelf and the shop assistant saying "There is no good pointing at it the computer says we don't have any"

I label my storage drawers with what is in there, By the time you get the phone out and check a QR code I would have found and extracted what I wanted

Started on drilling the cylinder head first was the small hole for a post to take the exhaust rocker. Also drill and ream the two holes for the valve guides

Then onto the four holes for the head bolts also while it was there I did a small dimple which will be where the spark plug will go. The reason the spark plug is not drilled yet is that it needs to be at an angle

top and bottom view of the head the dimple can be clearly seen. There are still more holes to drill some can't be done until the valve guides are made and in place

Edited By Dalboy on 28/07/2023 20:41:14

Not posted much but realised that I had not posted the progress on the piston all turned to diameter and the inside milled out and hole drilled and threaded. Still need to part off to length and do the piston ring groove when the o ring arrives

Had a very minor mishap on the inside but nothing that would need any more than a little clean up as it I can barely feel the little ridge looks worse than it is.

I did the piston above a few days ago and decided to make the con rod in the mean time while waiting for the o ring.

After two attempts at this I threw the parts in the scrape pile and ordered some replacement ali. Yes two made and both buggered up by me making stupid mistakes

Any way having a day off of the Farmboy I returned today and turned the blank for the head at least that went right after double checking and double checking again was not going to have another con rod episode.

Edited By Dalboy on 27/07/2023 21:34:29

Been meaning to make a small vice stop for those odd jobs to save some of the set up time. I used some offcuts of ali from the rounds I cut up for the Farm Boy I am making. I had a spare day as waiting for some material for the farm boy so knocked up this little stop to clamp to the vice.

Finished this last night I had to revert back to woodworking mode, not that a lot of woodworking involved.

This was done for a friend of the wife's. I am no means a sign writer by any stretch of the imagination. But they are very happy with it.

I have a wood lathe that requires oiling every so often. I use an eye dropper to get the oil where it need to go and have found that 3 drips is enough for a days turning. The bearings have only been adjusted once in all the years I have owned the machine. Even then it was just a minor adjustment. Keeping the machine clean and regular checks and servicing has kept it in a good state for the work I use it for.

By using a dropper in the little cup I do not have to fiddle with an oiler that needs stopping when not using it (to prevent puddles under the machine) and then adjusting it when it is needed

I have used it on a very regular intervals so it is not that it sits for long periods of time doing nothing, maybe lately while working on the projects I have on the go in metal has it only had little use

Not sure if this will be the right size on Axminster Tools site