millman
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Post by millman on Apr 24, 2024 12:43:25 GMT
From your description it sounds like a Chipmaster, same size as a Bantam but with the dreaded Kopp variator for infinitely variable speed as opposed to the Bantam which has a geared headstock. I have a Bantam that is about sixty years old and I had a similar problem, the spindles on Chipmasters and Bantams are identical at the chuck end, and the only real option you have is to run the machine at a couple of hundred revs and stone the taper with a round carborundum stone. I did consider grinding the taper with a toolpost grinder, it would have been quite easy as I have a taper turning attachment fitted but decided not to do it as the insert doesn’t leave much room as it is to get a screwdriver behind it for removal and grinding would make that gap even smaller, plus I am a coward. As I am writing this another possibility springs to mind, reproduce the taper on a bit of aluminium bar and use it as a lap with a bit of valve grinding paste.
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millman
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Post by millman on Apr 16, 2024 10:27:40 GMT
If what you have got works I would stick with it and buy the DC power supply.
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millman
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Post by millman on Apr 10, 2024 5:45:36 GMT
I think Chester are still trading so it may be worth giving them a call and seeing if they have any capacitors in stock.
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millman
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Post by millman on Apr 1, 2024 15:30:20 GMT
Bore a hole in the correct place large enough to remove evidence of your misplaced hole and just turn the crank pin from larger sized material. Loctite pin in wheel and jobs done. Hole needs boring though, drills and even slot drills will wander depending on rigidity of your mill, if you are doing it on something larger than a Bridgeport you can ignore that comment.
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millman
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Post by millman on Mar 14, 2024 17:33:23 GMT
Yes loads of drawings for 5 inch kings, Keith Wilson done a king, if I remember correctly dear old LBSC done a king in 2 1/2 gauge, I believe it was called kingette, must have been a watchmaking job doing the two inside cylinders but as far as I know only the one in 3.5 gauge,
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millman
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Post by millman on Mar 14, 2024 12:15:02 GMT
John beat me to it ! The only ones I have come across in 3.5 are the Jackson ones and as John says they are sold by Blackgates.
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millman
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Post by millman on Mar 6, 2024 21:20:09 GMT
Just googled Docksteader valve gear simulator and reading the blurb it says Windows XP will unzip the files, I don’t know much about computers, or anything else come to that but maybe find someone still using XP.
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millman
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Post by millman on Mar 6, 2024 15:43:19 GMT
.....The Station Road Steam website has a superb version of the Doug Hewson model for sale, so if you have £13950 down the back of the sofa. Just checked the back of the sofa, couple of buttons, half a dozen sweet wrappers and 47 pence in change, looks like I can’t afford to buy it at the moment.
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millman
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Post by millman on Feb 17, 2024 22:29:47 GMT
Great news that the Tonbridge society are more secure with their track site.
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millman
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Post by millman on Feb 16, 2024 19:41:10 GMT
Oh John that is such a shame, forget about it and go and have a lovely holiday.
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millman
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Post by millman on Feb 11, 2024 18:16:14 GMT
You were lucky with the lazy Suzan bearing being the right size, these bearings also make great turntables for spray painting. I love the motor and gearbox, I must have a look on Ali Express I need a couple for an upcoming project.
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millman
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Post by millman on Feb 5, 2024 9:09:13 GMT
Steve many thanks for showing this repair and in such great detail, I take my hat off to you.
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millman
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Post by millman on Jan 29, 2024 22:41:03 GMT
Excellent job, watching with great interest.
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millman
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Post by millman on Jan 28, 2024 22:39:49 GMT
How about fabricating it in brass, no rusting problems, silver solders beautifully.
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millman
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Post by millman on Jan 20, 2024 9:32:35 GMT
I agree totally with Roger, given half a chance they will wander all over the place, if possible I tend to use a thin side and face cutter as they tend to be a bit stiffer.
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millman
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Post by millman on Jan 15, 2024 22:49:57 GMT
Welcome Martin, Chub is a good first loco and plenty of people here to help you out if you need it.
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millman
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Post by millman on Jan 8, 2024 22:10:15 GMT
Seems strange to me that the shroud has a five thou tolerance on it when it fits in to a 9/32 un toleranced hole.
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millman
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Post by millman on Jan 7, 2024 22:43:30 GMT
Good question, I was wondering myself where I could get some, I couldn’t make the Midlands show so not aware that they weren’t there, are Signal Fuels still trading? I was thinking of going to my local coal merchant and trying to get anthracite beans or grains as used in the solid fuel hopper fed stoves. I have an open fire and use the smokeless stuff, Homefire eco 50 or whatever and although it burns reasonably well in the grate it is very wasteful breaking it up into bits small enough for a loco, it’s a bit too cold and wet at the moment to get a loco outside and play around steaming it to see how it burns.
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millman
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Post by millman on Dec 25, 2023 19:22:23 GMT
Merry Christmas and a happy new year to everyone and thanks for all your postings throughout the year, I have enjoyed reading them and learned a lot from them.
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millman
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Post by millman on Dec 4, 2023 16:03:41 GMT
Many thanks for your reply Chris, just purchased a couple of cans of Upol #8 Acid etch primer, tomorrow I shall get some cellulose thinners and a box of disposable gloves so I can give everything a final degreasing and keep the greasy fingerprints off. Hopefully I will get some painting done before year end.
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