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Post by Tel on Mar 8, 2005 20:31:42 GMT
This is the next engine folks - all I got is this pic so it's going to be a bit tricky  |
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Post by Tel on Mar 8, 2005 20:33:43 GMT
Frame pattern  |
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Post by Tel on Mar 8, 2005 20:43:49 GMT
Frame castings  |
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Post by greasemonkey on Mar 8, 2005 22:18:14 GMT
Hi Tel
Looking good. Are they cast them in Ali in your own foundry? What did you allow for shrinkage allowance and draft angle on the pattern?
Andy
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Post by Tel on Mar 9, 2005 6:43:50 GMT
Yes Andy, ran 'em the other morning while it was still cool enough to play with fire. Draft angle is 3° (or at least the scroll saw table set over to the 3° mark), actually could have done with a little more in the cut-out areas as I had a bit of trouble drawing the pattern. Shrinkage allowance is a bit academic 'cos I sort of made the pattern to eyeball dimensions (I'm making this thing up as I go along) and then added about 1/8".
Actually I ran two the evening before and they were dismal failures - mainly because I cleverly managed to pour the metal in the wrong hole on both of 'em. Ah well, practice makes perfect they say.
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JohnP
Hi-poster
Posts: 186
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Post by JohnP on Mar 9, 2005 13:00:33 GMT
Tel, on the picture of the prototype, it looks like there is some conduit running along the base and then up. Any idea what that was for? If you replicate it, will you be using scale electrons in the wires?  What was the original use for the engine? JohnP |
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Post by Tel on Mar 9, 2005 21:27:10 GMT
Uses? Brunell do a similar engine and to quote them;
This unusual cylinder configuration was originally used for Marine propulsion and was patented by Brunel in 1822. Later the design was used by the bleaching, dyeing and finishing trades where, due to the nature of the work, separate independent drives to each machine were most convenient.
The model is of an engine made by Lang Bridge Ltd., of Accrington and was used to drive a calico printing machine. Built in 1903, the prototype can be seen as a running exhibit in the Northern Mill Engine Society’s museum at Bolton, Lancashire.
Their version is somewhat different (it has trunk guides for starters) and is WAAAAAY to silvery for my pockets.
I noticed that conduit and was wondering myself - more likely to be an oil line of some sort I think.
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Post by Tel on Mar 10, 2005 9:59:19 GMT
The frames bolted together & the underside shapered to shape. Set-up is a bit flimsy & the Douglas was just about at full stroke, but light cuts won the day.   |
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Post by Tel on Mar 11, 2005 9:32:05 GMT
..another precarious set up  but starting to look like something  |
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Post by SpaceCadet on Mar 16, 2005 18:15:03 GMT
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Post by Tel on Mar 19, 2005 8:18:24 GMT
Yeah Ian, I was aware of the Brunel model - way too silvery for my pockets I'm afraid. It's based on this engine.  |
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Post by steammadman on Mar 20, 2005 21:31:30 GMT
HELLO TEL,
You sound like a man after my own heart,just had a look at Brunell's web page, they must think we model engineers are either daft or made of money,£217 for castings for that diagonel engine ?, .
I always chop out of the solid or fabricate,and the out of
whatever i can beg, borrow or steel.
good luck with your new project , look forward to seeing it on the bencch at a future show.
cheers
brian
steammadman
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Lee
Involved Member
Posts: 95
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Post by Lee on Mar 20, 2005 23:52:35 GMT
Where is the prototype Tel is it in a local museum.
Lee
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Post by Tel on Mar 21, 2005 19:02:37 GMT
Nah Lee, regrettably, it's over in Blighty somewhere - all I got is this single pic
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Post by Tel on Mar 22, 2005 6:50:15 GMT
HELLO TEL, You sound like a man after my own heart,just had a look at Brunell's web page, they must think we model engineers are either daft or made of money,£217 for castings for that diagonel engine ?, . I always chop out of the solid or fabricate,and the out of whatever i can beg, borrow or steel. good luck with your new project , look forward to seeing it on the bencch at a future show. cheers brian steammadman Yes indeed Brian - here's a peep at my fully fabricated, all singing, all dancing, not-quite-finished-yet 'Pseudo Pstuart' - no names, no pack drill, but it's styled after the 3/4" x 3/4" product of a well known maker ;D  |
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Post by steammadman on Mar 22, 2005 21:28:10 GMT
Hi Tel
the stuart look alike looks well, does she run as sweet as she looks?.
if i can sort out how to do it i'll post a couple of my
engines,(i'm not very good with this dam'nd computer,
i wish it was steam driven.) but will have ago any way.
cheers
Brian
(steammadman)
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Post by Tel on Mar 23, 2005 0:15:05 GMT
look foward to seein' 'em Brian. If you run into any trouble just holler
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