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| Potty Popcorn Engine |
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| Stilldrillin:
Thanks Chaps! :thumbup: It's right nice to be right, occasionally........ :D I thought Stew had changed the laws of physics! (Jim). :smart: David D |
| sbwhart:
I thought Stew had changed the laws of physics! (Jim). Well they have got doubts about :smart: I recon they measured the bit of string wrong. :D Stew |
| AndyB:
Hi Stew, Superb work! Just love your ideas :bow: I have to ask, after seeing the way you made the steam chest (and the Potty bit), is it your twin overcrank in Model Engineer magazine? Nice work on that too :bow: :bow: Andy |
| sbwhart:
Hi Andy Yes its my the over crank in Model Engineer. The steam chest is small enough to be made from one chunk of material, if you've got a chunk of the right size, I hadn't to referted to type and fabricated it. Thanks for you interest Stew |
| sbwhart:
Well back off holiday, and got another part ticked off:- the eccentric. Using a bit of mild steel bar first turn a 5mm wide groove to 20mm dia, and put a small centre drill into the end Then over onto the mill and centre under the spindle. Off set the mill to the throw of the eccentric and put in another small centre. With a independent four jaw in the lathe and using a woble bar get the off set centre running true. Put a 7.5mm drill through followed by a 8mm reamer. Back in the selve centring chuck turn a little boss to take the fixing grub screw, and part off Set up in the mill a drill and tap M3 for the grub screw. Thats that one done. Stew |
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