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| Stilldrillin:
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. Stripped...... He sent me a sample, from another loco...... 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. The bore is a couple of thou` over the original...... So, have to make a pair of pistons to suit...... Milled a 2" length of 5/8" dia brass, for the 1/2" wide cylinder blocks. 10mm ball end cutter + chamfer....... Looks ok! Sawn in two & cleaned up. Then drilled holes & tapped 7BA pivot thread........ Made new pivot screws & nuts....... Group photo........ 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....... Tinned the bore and the cap. Then pressed & sweated them together...... Skimmed the ends to length....... And drilled the 1.5mm holes..... 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..... After a good clean up, I think they came out ok! Obligatory group photo..... Oh, yes! In the pack with the samples was an SEL piston...... Could I make two of those, as well...... Pleese? Note..... The top one`s still awaiting the big end rad machining...... Just received this pic from a very happy man...... :D The loco will be rebuilt properly, during the winter months...... :thumbup: David D |
| dsquire:
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 |
| Reckless_Engineer:
Another cracking Job david :thumbup: How do you get time to do your own bits lol |
| sbwhart:
Nicely done and shown Dave. Hope he makes a nice job of the rebuild to match your cylinders. Stew |
| Brass_Machine:
Very nice job David! Very professional looking. Eric |
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