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Well, I think the 3D model of the full-size slew/crowd engine is complete - got the valve eccentrics/rods, and piston/conrods, crankshaft all in. Here are some pictures of the engine and some cutaways:Next on the list is a mock-up of the passages/valves for an attempt at a simpler version that will work at small model scale, but first a few days away from the computer to let the little grey cells recover from this one!! EDIT: and could not resist seeing how it looks on the main boom. Still need to make the spur gears for either side, and get the engine placement tweaked so the gears mesh correctly, but looks pretty impressive up there!
hi ,its good to be able to get all those drawings ! and looks like a major build project...
Very interesting Chris. I guess this was a really specialized engine. Back then, I guess you couldn't just go on-line and order a "Binford 80-00-80 Steam Engine", bolt that sucker to the boom and go to work! Jim
Chris--You're getting pretty handy with the 3d modelling. I know how steep the learning curve is. You are doing nice work.---Brian
So Chris, what do you have the shop elves doing while you are drawing?? Not making trouble I hope Bill
Quote from: b.lindsey on November 06, 2017, 12:54:48 AMSo Chris, what do you have the shop elves doing while you are drawing?? Not making trouble I hope BillYou're right, it's tough to keep them entertained between builds, so I am alternating them between reorganizing the shop to make useful room for the mini mill I picked up from a friend's estate, carving a steersman for the Lombard model (who looks vaguely familiar), raking leaves, and polishing the carousel horse that I finished carving and painting for a friend. Its kept them mostly out of trouble, between sessions racing squirrels down the street (not sure where they got those little saddles!).
Quote from: crueby on November 06, 2017, 01:14:22 AMQuote from: b.lindsey on November 06, 2017, 12:54:48 AMSo Chris, what do you have the shop elves doing while you are drawing?? Not making trouble I hope BillYou're right, it's tough to keep them entertained between builds, so I am alternating them between reorganizing the shop to make useful room for the mini mill I picked up from a friend's estate, carving a steersman for the Lombard model (who looks vaguely familiar), raking leaves, and polishing the carousel horse that I finished carving and painting for a friend. Its kept them mostly out of trouble, between sessions racing squirrels down the street (not sure where they got those little saddles!). Mini Mill?????PS: Drawings are looking great Chris. I'm looking forward to hearing about your upcoming visit to the full size machine.Jim
Chris That is a odd lead screw pitch it’s not even in our language ( mm) very oddYou have heard the term ear worm for a tune that you cannot get rid of ,well elves racing squirrels is in my head ,I have the image stuck now every time I see the tree rats down the garden plaguing the local cats 🐱 Great work on the design work in fusion , just had a bad cam from fusion rammed a carbide end mill into the nearly finished part ,full rapid in Z- 🙈🤯Still got plenty of Stuart
Grizzly seems proud that it is a 1/16th per turn advance, but that was obviously written by a non-tool-using marketoid with his head in the swarf barrel...
Quote from: crueby on November 06, 2017, 07:43:11 PM Grizzly seems proud that it is a 1/16th per turn advance, but that was obviously written by a non-tool-using marketoid with his head in the swarf barrel... I'm picturing a shop where the only metrology instrument is a tape measure with sixteenth inch graduations and the logo "Vote Billy Fox County Surveyor".--Tim