 | | "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | An idea forming in the mind many years ago was to take the pneumatic cylinders and actually make a 'steam' engine. Inspired by Trevyn a few years back at hte hobby show, when he showed up with a pneumatic engine that ran on the duplo tracks, I (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | In lugnet.org.ca.rtltoronto, David Koudys wrote: <snip> (...) <snip> a smaller movie can be found here-- (URL) K (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —Derek Raycraft
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| | | | | | David... That's... Awesome... !!!! Derek (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | | (...) Thanks! I just wish it worked better ... I'll probably continue to tweak it a bit over the next few weeks--hate the look of the coal car for starters... and maybe it'll be good enough to do a loop of track at the hobby show--compete with the (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | In lugnet.org.ca.rtltoronto, David Koudys wrote: <snip> (...) <snip> Ahh, the internet--a beautiful place-- YouTube-- (URL) better for watching! :) Dave K (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —John Neal
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| | | | | (...) <snip> (...) Hey, really fun to watch. Of course, it makes my head spin with all of that there engineering stuff. But I love the sound effect! I am left with two thoughts: First, my son is going to really flip out when he sees this; and (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains, FTX)
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| | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | | (...) Thanks! Your son is an inspiration to me, so we're even and no, I don't remember being around her 17 years ago...i'd be 23 though, and my 20's were big parties and lotsa excess... Well.. maybe not :) Just watching the vid from work, I have a (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains, FTX)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —Ben Fleskes
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| | | | | <snip> (...) Very cool. I can't tell from the pictures, but are your driver wheels on either side of the engine set 90 degrees out of phase with the associated timing difference on your valve positioning? Ben In lugnet.org.ca.rtltoronto, David (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | | | (...) Yep--did the 90 degree offset--when you watch the video, you can see the wheels pause 4 times per revolution (using compass points-- NE, SE, SW, NW)--that's when one phase is done and waiting for the next phase. 4 phases with two pistons! I (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | | In lugnet.org.ca.rtltoronto, Ben Fleskes wrote: <snip> (...) A huge oversite on my part-- Ben, I know I've thanked you before, but seriously, again thanks for the wheel sets that you produce--without them, my pneumatic train wouldn't have happened, (...) (18 years ago, 27-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —Manne Granberg-Ohlsson
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| | | | | (...) Hey David, very awesome! :-) I especially like the way you've secured the cylinders, is it strong? Also, pretty neat idea to stop the air at the front using the lever stick. About the slipping, how about putting rubber bands on the driver (...) (18 years ago, 30-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains, FTX)
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| | | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | | | (...) It isn't the strongest, bot for this application, it keeps the cylinders in direct line with the push rods, so it works. It has the added benefit of keeping the pneumatic tubes more securely fastened to the input/output ports on the cylinder (...) (18 years ago, 30-Oct-06, to lugnet.org.ca.rtltoronto, lugnet.trains, FTX)
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| | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —Anthony Sava
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| | | | (...) That is just too cool. I've watched the movie many times now, I love the sounds your engine makes! I hope you're able to get it to run reliably, I'd love to see it on a loop of some kind. I have a suggestion for the performance issue, but I'm (...) (18 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | In lugnet.org.ca.rtltoronto, Anthony Sava wrote: <snip> (...) Great ideas Anthony! I did put a LEGO boat weight right on top of the drivers, and the 9v motor is pretty close as well. I haven't looked at it in a few days, but plan on modifying it (...) (18 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —Anthony Sava
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| | | | (...) Another idea (and I'll stop after this, I promise!) would be a bit harder to implement, but may work in the end. How about removing one of your trailing pairs of wheels and redesign in a fourth pair of drivers, making your train from a 4-6-4 (...) (18 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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| | | | | | Re: "Big Blue" Pneumatic 4-6-4 engine and tender —David Koudys
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| | | | In lugnet.org.ca.rtltoronto, Anthony Sava wrote: <snip> (...) Never worry about replying--that's what usergroups are for :) (...) Oh if I only had more BBB wheels--the ones you see ar ethe only ones I have :) This way you could take advantage of (...) (18 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)
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