Having always had an interest in how to make and grind crankshafts I took the plunge (literally) and found an old Churchill CRM Offset Crankshaft Grinding Machine and thought I would share the experience!
Myself & two colleagues drove to Yorkshire last April to extricate 7.5 tons of machine that was destined for the scrap yard. After a hard 3 hours we got it out and loaded onto the truck and headed home to South West Glasgow.
Once in position I wired it up and all was found to be working with exception of the hydraulic traverse to the table. A wiring fault was found and rectified which got the table working!
This is the fist time the machine had worked under power since 1984? Now that I was happy it was working, I set about stripping off some of the parts for cleaning, inspection and preparation for painting.
Progress was going well until the end of August when disaster struck. I snapped my achilles tendon in my left leg! As I am not exactly in the fisrt flush of youth recovery was slow, very slow!
Everything came to a halt and I have only this month been able to start work on it again. I am hoping to have it ready soon enough to set up an old crank to see how accurate it will grind. I also managed to pick up an American Arnold gauge or in process gauge that measures to 1 tenth of one thousandth of an inch! Not that I expect this age of machine to grind to that tolerance? If it can achieve .0005" that will cover the cranks I intend to grind?
Anyway I've prattled on enough the pics below show it as it was in its last home, the next as it is emerging into daylight after some 35 years. The last 2show it back here in Scotland.
If there is enough interest I'll post progress of the restoration. The goal is to grind a Rolls Royce Merlin V12 Crank that I believe this grinder was capable off back in the day? And before anyone pipes up, I know that's a tall order both in terms of being able to achieve and indeed find one!
Might have to settle for a Jag V12?