| Gallery, Projects and General > Project Logs |
| New project started, double acting "steam" engine! |
| << < (4/6) > >> |
| kellswaterri:
Hi John, never seen that one with the ''String'' drive for between centres turning...could you enlarge on how it is done...this should be a very interesting engine build. John. |
| John Hill:
--- Quote from: kellswaterri on December 12, 2009, 12:34:16 PM ---Hi John, never seen that one with the ''String'' drive for between centres turning...could you enlarge on how it is done...this should be a very interesting engine build. John. --- End quote --- It is a bit hard to describe, just tie the string around the centre and wind on tight until it no longer slips then attach it to the work, I was lucky in my work in that as the pieces would be screwed together I could attach the string to a screw head. |
| chuck foster:
looking good john :thumbup: can't wait to see it run :dremel: chuck :wave: |
| John Hill:
I cut the lawns yesterday and as the weather was not the best I got to spend a few hours in my shop today! :ddb: Turning a connecting rod, I put a piece of 12mm square in the four jaw and began to slim it down a little. Now I am going to solder a couple of short tubes to one end.... ... the rod is being held in a small vice so that I can work on it with my 100Watt soldering 'iron' and my Big Boy's Hair Dryer! A few minutes later and I have the two pieces soldered in place and I have drilled a hole that is just a tad undersize for that desired to fit the crank pin. Then into the band saw it goes for a little trim... Ready now for a clean up and I need to drill that hole to the final size too! One crank assembly, the short rod is to the piston and has a long stroke, the long rod goes directly to the steam chest whereas the piston rod goes to a cross slide. You might be wondering why I am using lead solder for this job, the main reason is that I do not have a safe place to use a torch and neither do I have a good enough torch. With lead solder I can do the job quickly and easily using just the big electric soldering iron and a hot air blower. |
| John Hill:
I turned a couple of fly wheels out of cast exercise weights, getting the letters off the casting is a challenge and this was the first one I did using an angle grinder, not good as you can see. The letters are actually quite easy to clean off neatly with a cold chisel showing that sometimes the old ways are the best ways. I assembled all the bits on a piece of brown stuff to see what needed to be adjusted, sorry to say that there were a lot of things to fiddle and juggle and just about every bolt hole is now a slot and all clearances, including those which were once too tight, are now in the 'rattle' classifications. So lets take a look around the assembly of ill-fitting parts! Crank shaft end and showing the cross slide. Other end of the cross slide showing the piston rod and the end of the valve chamber (aka 'steam chest'?). That pin will be getting a trim. Patience please while I work out how to post the last bit.. :ddb: |
| Navigation |
| Message Index |
| Next page |
| Previous page |