Search results

Worth drilling the cladding holes in the cylinder block (easy to mount) before you get to much sticking out of it

One other thing the shaft holding the expansion link arms, drawing says 6 15/16“, make 7 1/4” and trim down when you have the expansion links connected to the valves. Had to be longer on all the ones I have done.

Maybe a bit late, but when I made mine I found it needed more than the 1” of thread shown on the drawing I needed 1 1/8” minimum to achieve full movement of the expansion links.

The two I have built will run without but they definitely run better with the springs If it was running on steam there would not be any benefits

Adding very light springs to hold the valve against the ports makes running on air a lot better all cylinders work properly

Setting the eccentrics on the crankshaft

Timeing a Stuart triple is often considered a black art, this is hopefully shows one of the the problems that I think gets overlooked,the drawings have a note on them stating “if the ports vary from the drawings adjust the length of the valve to suit”. This engine shows exactly why this is...

So the second set done

Have you got a link for the auto drain it sounds good

Yes both fully reversing they are just contra rotating in the same position

My finished pair of triples built mainly through lock down

I have built a couple of Stuart triples and enjoyed the learning curve, I took lots of pictures and have put them together with descriptions, if you’ve got 15 minutes to spare I hope you enjoy I wish there was something similar I could’ve seen when I started.

Thanks everyone for your replies and Ken I think you nailed it. I will call the supplier on Monday

That’s interesting I also drilled a 9.3mm hole before I turned it round and it did wander even though I had given it a hefty centre drill, it’s for a flywheel so will not need to be structurally stressed

So I have turned the other end and the pattern is mirrored exactly 2” down the bar?it must be a production issue otherwise it would be random

Has anyone come across this it looks like a stain and won’t machine or polish out it’s cast iron Meehanite bar I can’t really take much more material off wondering if it’s going to have to be binned

I have arthritis in my hands and the hand wheel on the saddle of the Myford is quite small, so my quick solution £16 on eBay makes life more comfortable, and the handle folds in, just need to make a sleeve (2nd picture) 12mm Bore 120mm Dia Hand Wheel Black for Milling Machine 702105224106 | eBay

The one I have seen had a heating element screwed into a boss in the boiler shell, so the same as a valve or pipe fitting, if you use a circle it has to become part of the pressure vessel shell and would require to be fit for purpose

I have never had an electric boiler but I have seen commercially manufactured ones, the safety valve is the most important and I should imagine some sort of electrical safety circuit.

I have made some 1/4” dia ones from KS brass tube, the brass end caps were made interference fit and pressed in with a bit of loctite just in case, fitted with a spring for return, single O ring on a brass piston, shaft from stainless welding rod, hose connector machined in the end cap...