Crankshaft weight

[unclemiltie]

I am getting ready to list a couple NOS cranks online. I never really paid attention before I guess but after weighing them in the box I found that the commander crank, 523137, is at 80 pounds while the 259 crank is at 60 pounds. The 20 pound difference surprised me and as I age it felt more like 50 difference

[S2Deluxe]

A shorter stroke 259" crankshaft, with 5 main berrings, and 4 siamiesed connecting rod journals, should be very close, to 3/4 the weight. Of the longer stroke Commander six, with 4 main berrings and 6 individual rod berrings. Why's it such a surprise?

Mark

[StudeRich]

Also remember that a Six Cylinder Engine and Crankshaft is LONGER by TWO Cylinders! Probably the Largest reason for being heavier.

[S2Deluxe]

Also remember that a Six Cylinder Engine and Crankshaft is LONGER by TWO Cylinders! Probably the Largest reason for being heavier.

Thanks, for the clarification, Rich! That was essentially, what I was trying to say. Although, in a little bit more of a roundabout way.

Mark

[jts359]

I just used a chainfall to install a 6 cylinder crank as the last time I did it I pulled some tendons in my fore arm and it took about a year to heal. Ed