How props were made
How props were made
(OP)
A fantastic link that I had to share, its quality, the small pictures can be all clicked on and enlarged, read it all and enjoy!!
h ttp://www. practicalm achinist.c om/vb/anti que-machin ery-histor y/casting- machining- large-prop ellors-193 0s-193744/
Brian,
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Brian,





RE: How props were made
JMW
www.ViscoAnalyser.com
RE: How props were made
Ignore him, this is engineering history, and that is what you put up there. That stuff makes the ten ton foundry, where I used to work in the UK, look like a hobby shop.
B.E.
RE: How props were made
--Scott
http://wertel.eng.pro
RE: How props were made
Im sorry I wasn't about back then, so much was figured out. All that figuring out later became Inputs for computer programmes. Im still figuring out the Inputs 70yrs later LOL
BG
RE: How props were made
I also enjoyed it very much and what really facinates is how they tackled projects back then without all the tools we have today. And the further back you go, the more impressive are some of the projects that not only were seriously considered but actually built.
That includes pyramids, medievil cathedrals and so on.
Today I got a snippet from the Greenwich Museum on the radio.
I had previously read a book about Harrison and seen a TV show devoted to Harrison and his marine chronometers.
H3 is being rebuilt.
It has over a thousand components all made with very centre to basic lathes and the plates were hand filed. It took him 19 years to make H3.
Today's very brief radio article brought out something of the manufacturing methods the complexity of the design and it revealed that Harrison, in his pursuit of the very best chronometer invented the caged ball bearing and the bi-metallic strip... back in the 1750's.
So yes, posts like this fascinate me but they also take up a lot of my time.... so despite what I said, do please keep such links coming.
But maybe they didn't have 'elf and safety, HR or dumb managers to hold them back... or did they? (Must go look at that other thread on this and see what people have been saying).
JMW
www.ViscoAnalyser.com
RE: How props were made
Can a machinist tell me why a ball ended milling cutter, or a grinding wheel, weren't used for that planing (shaping) job? An active tool has to be easier than transferring all the cutting forces via a gantry.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: How props were made
Also, given the surface speed limits imposed by the tough bronze they're cutting, the extra speed available from live tooling couldn't be used, even if you could solve the problem of providing clearance for a milling head and drive all over the generated surface.
Mike Halloran
Pembroke Pines, FL, USA
RE: How props were made
Heres some more pictures of 'stuff' just for you, !
http://www.flickr.com/photos/averheijden/page8/
BG
RE: How props were made
As a matter of fact I did get an all too brief tour of the MAK (now Caterillar) works in Kiel.... it was quite something to see the how they make the large diesel engines..... I'm sorry I didn't get the same access when I visited Man B&W but the one I'd like to see is Wartsila's machine shop..... now there are some big engines!
JMW
www.ViscoAnalyser.com
RE: How props were made
JMW
www.ViscoAnalyser.com