10-11-2017, 04:38 AM
The steel supplier I went to today was not as helpful as I had hoped, would effectively only sell me offcuts out of their bin if I didn't want a full length. The tribulations of being a hobbyist in an industrial field. I bought a 700mm length of 102mm round 4140, only piece they had with sufficient diameter to get my 85x 85mm piston out of. Cost an arm and a leg. At least I'll have some stock on hand, nothing else bigger than 50mm round in the shed at present and not much of that.
I've sorted out the appropriate seal and wear rings, hopefully will tackle the piston tomorrow.
I spent a bit of time this afternoon facing the flywheel out of the tractor, I decided to attempt milling it on the rotary table to avoid having to make a mounting flange to chuck in the lathe. Didn't go as well as I had hoped. The thing is HARD. I doubt it started life that way but it has seen some slip over the years and has a crazed, oil-impregnated surface. Think I might have to make a flange and do it in the lathe after all as I'm not sure I'm not milling runout into it with the mill setup.
I've sorted out the appropriate seal and wear rings, hopefully will tackle the piston tomorrow.
I spent a bit of time this afternoon facing the flywheel out of the tractor, I decided to attempt milling it on the rotary table to avoid having to make a mounting flange to chuck in the lathe. Didn't go as well as I had hoped. The thing is HARD. I doubt it started life that way but it has seen some slip over the years and has a crazed, oil-impregnated surface. Think I might have to make a flange and do it in the lathe after all as I'm not sure I'm not milling runout into it with the mill setup.
Lathe (n); a machine tool used in the production of milling machine components.
Milling Machine (n); a machine tool used in the production of lathe components.
Milling Machine (n); a machine tool used in the production of lathe components.