Posted by bc on March 19, 2021 at 07:56:54 from (24.255.129.137):
In Reply to: detroit diesel? posted by swindave on March 18, 2021 at 13:20:43:
Interesting topic and stories here. We used the 4-53's, 6-71's, and the 8's on our drilling rigs around here in the 70's and 80's. 4-53 on the water pumps and on up for the mud pumps and drawworks. Would use one 6-71 for normal drilling but when it came time for a bit trip, start the other one, shift it in gear with the other, and those babies would scream running in tandem pulling pipe out of the hole. I don't remember having any problems with oil leaks though. We'd check the oil at the start of every tower and it didn't seem to be a problem. Daylight driller would do the oil changes. Of course every time there was more than 2 seconds of idle time that meant all the hands grabbed a bucket of rig wash and a brush and wash the rig down.
Dean's stuff was interesting. I think the PT boats used twin 8 cylinders with the manual shift power divider. I'd like to have one to cruise around the lake and do a little fishing. Read where they found John Kennedy's second PT boat after the PT109 was sunk in the Solomons, the PT59 was found sunk in the harbor off of Manhattan, New York and is being restored. Used plywood for the hulls. Didn't know the landing craft were plywood also. No wonder they didn't stop any bullets.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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