MadModder
Gallery, Projects and General => Gallery => Topic started by: Stilldrillin on July 05, 2010, 04:42:02 AM
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A German member of my other forum asked if anyone could help him...... He could only obtain metric tube, and needed imperial.....
Piece of bar, drill, ream, top od to size.......Course I can! :thumbup:
I guess something got lost in translation........ He wanted cylinders! :bugeye:
Here`s what he had just bought. A 193? Bowman loco.
(http://i110.photobucket.com/albums/n95/Dayjo/BowmanLoco.jpg)
Stripped......
(http://i110.photobucket.com/albums/n95/Dayjo/BowmanLoco2.jpg)
He sent me a sample, from another loco......
(http://i110.photobucket.com/albums/n95/Dayjo/P4220009.jpg)
Got off to a bad start, when the 3/8” tube I had ordered turned out to be 3/8” o/d instead! :bang:
Could find nothing, anywhere! So, I appealed on here, and a kind Gentleman in America sent me the perfectly sized piece!
Thank you, Joe! (75Plus), yer a Gentleman! :thumbup:
Parted to slightly over length..... Then made end plugs.
(http://i110.photobucket.com/albums/n95/Dayjo/P4190002.jpg)
The bore is a couple of thou` over the original...... So, have to make a pair of pistons to suit......
(http://i110.photobucket.com/albums/n95/Dayjo/P4200012.jpg)
Milled a 2" length of 5/8" dia brass, for the 1/2" wide cylinder blocks.
(http://i110.photobucket.com/albums/n95/Dayjo/P4200004.jpg)
10mm ball end cutter + chamfer....... Looks ok!
(http://i110.photobucket.com/albums/n95/Dayjo/P4221008.jpg)
Sawn in two & cleaned up. Then drilled holes & tapped 7BA pivot thread........
(http://i110.photobucket.com/albums/n95/Dayjo/P4300001.jpg)
Made new pivot screws & nuts.......
Group photo........
(http://i110.photobucket.com/albums/n95/Dayjo/P4300011.jpg)
Next job, soldering! Never liked doing that....... Would rather be machining....... ::)
I made an aluminium pedestal support, plus a wooden handle to fit the bore.......
(http://i110.photobucket.com/albums/n95/Dayjo/P5210015.jpg)
Tinned the bore and the cap. Then pressed & sweated them together......
(http://i110.photobucket.com/albums/n95/Dayjo/P5210019.jpg)
Skimmed the ends to length.......
(http://i110.photobucket.com/albums/n95/Dayjo/P5210023-2.jpg)
And drilled the 1.5mm holes.....
(http://i110.photobucket.com/albums/n95/Dayjo/P5240028.jpg)
Screwed the block to a 7BA aluminium support. Tinned the cylinder & block.
Then aligned them together with a 1.5mm drill shank, and re heated.....
(http://i110.photobucket.com/albums/n95/Dayjo/P6040042.jpg)
(http://i110.photobucket.com/albums/n95/Dayjo/P6040044.jpg)
After a good clean up, I think they came out ok!
(http://i110.photobucket.com/albums/n95/Dayjo/P6040062.jpg)
Obligatory group photo.....
(http://i110.photobucket.com/albums/n95/Dayjo/P6040059.jpg)
Oh, yes! In the pack with the samples was an SEL piston...... Could I make two of those, as well...... Pleese?
(http://i110.photobucket.com/albums/n95/Dayjo/P6140073.jpg)
(http://i110.photobucket.com/albums/n95/Dayjo/P6150005-1.jpg)
Note..... The top one`s still awaiting the big end rad machining......
(http://i110.photobucket.com/albums/n95/Dayjo/P6180021.jpg)
Just received this pic from a very happy man...... :D
(http://i110.photobucket.com/albums/n95/Dayjo/Scharfendyls.jpg)
The loco will be rebuilt properly, during the winter months...... :thumbup:
David D
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David
Very well done and right nice of you to help out a fellow modeler. He should be well pleased with those bits. :ddb: :ddb:
Cheers :beer:
Don
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Another cracking Job david :thumbup: How do you get time to do your own bits lol
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Nicely done and shown Dave.
Hope he makes a nice job of the rebuild to match your cylinders.
Stew
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Very nice job David! Very professional looking.
Eric
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Thanks Chaps!
For all your positive comments...... :thumbup:
David D
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Great thread David :clap: :clap: :clap: :clap: :clap:
Your work must be all over the world now :thumbup:
Rob
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Great thread David :clap: :clap: :clap: :clap: :clap:
Your work must be all over the world now :thumbup:
Rob
Thanks Rob! :thumbup:
Funny you should say that! Off top of me head, Australia, New Zealand, Thailand, Austria, Germany, France, and all points of the Uk & Ireland.....
I`m re sleeving a Cyldon piston, at the mo. For Bournemouth! ..... But, next week, it`s America! :bugeye: A "Miss America".... Pre war, steam powered speedboat....... No cylinder/ piston/ crank/ flywheel etc. But, another member in the UK has one, for sampling...... Probably! :scratch:
Should be another interesting project! :D
David D
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Hi I am new to this group and not sure if this is the way to contact you .After reading your excellent artical ,My question is on the Bowman cylinder is the pivot pin originally screwed or pressed in .I have bought two Bowman 300 and the pivot pin protrudes in to the cylinders damaging them. I will make new cylinders and solder them to the old bases.
Regards Peter
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Nice to see you are still on your feet and keeping busy Dave, and good to see you helping out :clap: :clap: :clap:
John
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Nice to see you are still on your feet and keeping busy Dave, and good to see you helping out :clap: :clap: :clap:
John
Thanks John.
But.... Have you seen the date of this project? That was 11 years ago!! :thumbup:
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My question is on the Bowman cylinder is the pivot pin originally screwed or pressed in .I have bought two Bowman 300 and the pivot pin protrudes in to the cylinders damaging them. I will make new cylinders and solder them to the old bases.
Regards Peter
Hi Peter. Welcome to Modder.
I'm pretty sure, I copied the original, and screwed the pivot pin into the cylinder base. The tapped hole in the base, was deeper than the pin's thread length. So, it couldn't do any damage.
Has someone replaced the pivot pin, with studding... ? :scratch:
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:doh: Cheers Dave, i was at the opticians yesterday, and yes i'm in need of new glasses.
John
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:doh: Cheers Dave, i was at the opticians yesterday, and yes i'm in need of new glasses.
John
Nice one John! But....
You think you've got trouble!
I've just had cataract op, on my left eye. Marvellous job! Everything is clear and bright. Through the new lens. :thumbup:
The right eye, is still short sighted, and a pale khaki colour. :palm:
I'm having fun, with single lensed reading glasses..... :scratch:
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I was told i have a cataract starting in the corner of my left eye!!!!!!!! ehhh its a bugger this getting old. hope yours gets back to normal soon Dave.
John
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ehhh its a bugger this getting old. hope yours gets back to normal soon Dave.
John
Thanks John. But,being this age, sure beats the alternative..... :lol:
I had a phonecall today. An appointment, for pre-op, Monday. Should be all sorted within a couple of weeks... :thumbup:
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Good luck David with the procedure.
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Thanks Andrew....
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Morning Dave
Nice to here from you :thumbup: :thumbup: :thumbup:
Stew
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Hi Stew!
Still around. Not very productive, at the moment.
Waiting for the weather to sort itself out. And, allow me to, "get out there", again....
Hope all is well, with you and your's.
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Yes Dave, it does beat the alternative!!!! good luck with the operation.
john
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Hi Stew!
Still around. Not very productive, at the moment.
Waiting for the weather to sort itself out. And, allow me to, "get out there", again....
Hope all is well, with you and your's.
Hi Dave
We're all good thank you so far escaped covid, had a bit of a brush with Prostrate Cancer treatment seems to have worked so far. Been building a loco for the last four years nearly got it finished about 12 months work max should see it finished and steaming.
Hope you and yours are all good
Stew