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looking good i think of the pattern makers and foundry moulders making the mould to produce a good casting.john
Hi also with our models we can use a 36" or 12" ruler to measure everything from one datum end !! or did they have 45' rulers in those days ??!! Willy
My drawings of the ship USS Ohio I got separately from the Maryland Silver Company Don't know if they exist anymore
for my 1880's to 1900 ship models I have many copies of plans from the National Archives,, the level of drafting and drawing always astound me.. plans for the USS Vesuvius circa 1883.. copy shown is reduced by 50% did have it enlarged to original size ....
Am I the only one surprised to see the crankshaft bolted together in sections? I would think the shear forces from an 8000 HP engine would be problematic. Maybe it was normal and I’m showing my naïveté. I guess limitations at the time prevented a one piece crank that large. This is going to be another amazing build!Sent from my iPhone using Tapatalk
Quote from: pmerritt on August 09, 2022, 03:21:54 AMAm I the only one surprised to see the crankshaft bolted together in sections? I would think the shear forces from an 8000 HP engine would be problematic. Maybe it was normal and I’m showing my naïveté. I guess limitations at the time prevented a one piece crank that large. This is going to be another amazing build!Sent from my iPhone using TapatalkWell, it was common for the shafts from the engine back to the prop to be bolted together too. This engine is around 35 feet long, that would be a tough one to make in one piece. Each joint has eight 3 inch diameter bolts, I don't see any keys in the drawing. They must have got it right, they worked! I thought it was clever that all four sections are identical, just flipped end for end and rotated as needed.Another interesting thing is that the shafts and crankpins are hollow, not solid.