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| Gold Blend. A Coffee Jar Engine........ |
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| Bluechip:
Dave There is a link from that site to an animation. Had a quick shufti at that ... ??? I think you may well be right. Maybe that's why you don't see too many Ross Linkage engines .... :scratch: The Rhombic is quite understandable ... by comparison. I have both Rizzo books, but neither give any real insight .. Doing an ordinary Stirling meself at the mo ... just out of all the scratty bits of metal I have .. Being slung together on the fly ... ::) was going to do some more this PM but felt off it. Been to the Dentist this AM for two fillings ... Cakehole inoperative ever since ... just got it going about 7PM so I've been stuffing my face ever since, need to catch up on snap .. Regards from a peckish ... BC |
| Stilldrillin:
Well...... Had another go, with geometry set (99p Wilkinsons), squared paper, cardboard cut outs, imagination etc.... :smart: Managed to prove one thing. I've totally lost any trigonometrical ability. Despite using it almost daily while working for a living! :palm: Sooo....... After all that waste of time, decided to build a conventional crank assembly! ::) Drilled the deck 5mm, and threw away 6off assorted/ useless, new, tin coated countersink bits. Before finding my old rose bit, from the 1960's. :bang: Consequently, not a lot of progress made, in a lot of (precious) time........ :bang: The column's rather high at the mo. Better to shorten by an inch, than to extend. The bearing sleeve, through the column, is 1/2" dia brass, and will have a pair of ballraces. The discs are 2" dia. The thicker one will be the boss of the 5 or 6" dia flywheel. No progress possible over the weekend. But hope have the time, to come up with a means of holding a dozen balsa wood discs securely to an oscillating 4mm piece of silver steel........ Hope your gob's better now, Dave....... :thumbup: David D |
| Bluechip:
--- Quote from: Stilldrillin on August 12, 2011, 04:03:07 PM ---Well...... Had another go, with geometry set (99p Wilkinsons), squared paper, cardboard cut outs, imagination etc.... :smart: Managed to prove one thing. I've totally lost any trigonometrical ability. Despite using it almost daily while working for a living! :palm: Sooo....... After all that waste of time, decided to build a conventional crank assembly! ::) Drilled the deck 5mm, and threw away 6off assorted/ useless, new, tin coated countersink bits. Before finding my old rose bit, from the 1960's. :bang: Consequently, not a lot of progress made, in a lot of (precious) time........ :bang: The column's rather high at the mo. Better to shorten by an inch, than to extend. The bearing sleeve, through the column, is 1/2" dia brass, and will have a pair of ballraces. The discs are 2" dia. The thicker one will be the boss of the 5 or 6" dia flywheel. No progress possible over the weekend. But hope have the time, to come up with a means of holding a dozen balsa wood discs securely to an oscillating 4mm piece of silver steel........ Hope your gob's better now, Dave....... :thumbup: David D --- End quote --- Ah, It's coming on. I'm sure it will be a runner ... :thumbup: Recently refurbished gob is in splendid fettle ... Just completed Full-Power acceptance trials on a bag of Pork Scratchings .... One small discrepancy, I think he's used Metric fillings ... me gnashers no longer seem to fit BSF nuts ... Bugger ... :scratch: BC |
| Stilldrillin:
Has it been a month since I posted/ did anything much? Sheesh! :bugeye: I've not had much shop time lately, and when I did, I could only manage around an hour at a time..... ::) I needed some 1mm+ slots. So bought a 1.2 x 50mm dia. slitting saw, then had to make an arbor to suit...... It works an all........ Been making most of the fiddly bits. These are rod ends...... Ball race big end, rings......... Fitted ball race main bearings. Pushrods are 3/16" brass tube. Have replaced the displacer steel disc, with a disc from a jam jar lid....... All loosely pressed together. The piston just ducks back inside the cylinder, as the displacer arrives....... I now need to find some way of holding the top displacer disc in place, without marking the shaft. Also a 6" x 1/4" flywheel........ David D |
| Rob.Wilson:
:bugeye: looking great David :clap: :clap: :clap: :clap: Very interesting build :thumbup: Rob |
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