Author Topic: Old Style Oscillator  (Read 10704 times)

Offline Jasonb

  • Full Member
  • *****
  • Posts: 6463
  • Surrey, UK
Re: Old Style Oscillator
« Reply #15 on: December 28, 2017, 06:34:45 PM »
Bridgenorth? where is that, these ones came from Bridport. ;)

Should not jump about too much, that is why it has a counterbalanced crank just like the old one, combined with an ali piston I don't see it being an issue. Though if i did not run it then jumping about would not come into it :LittleDevil:

Online Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 12416
  • Hampshire, england.
Re: Old Style Oscillator
« Reply #16 on: December 28, 2017, 06:48:30 PM »
Bridgenorth? where is that, these ones came from Bridport. ;)

End of the Severn valley Railway: It has a very nice cliff Railway and some excellent pubs :DrinkPint: Martin and I were discussing them the other night  ::)

Yes Bridport Foundry  :facepalm: .. but the stuff they have cast themselves is excellent quality. Early on they were selling the old Channel Island stuff that was not of the same quality.

Jo
Usus est optimum magister

Offline Gas_mantle

  • Full Member
  • ****
  • Posts: 1332
  • North Yorks - UK.
    • My Youtube channel
Re: Old Style Oscillator
« Reply #17 on: December 28, 2017, 07:52:53 PM »
It's an attractive little engine, do you know if it is based on a full size working engine ?

Offline Jasonb

  • Full Member
  • *****
  • Posts: 6463
  • Surrey, UK
Re: Old Style Oscillator
« Reply #18 on: December 28, 2017, 08:37:05 PM »
I suppose the one in the other thread ma have been used as a very small "workshop" engine but as it is of such a simple design I have my doubts.

Should be quite attractive when complete, not sure what colour I will go with, maybe a similar green to the original or possibly something else, quite fancy a cream but more yellower than what I used one the Muncaster which should set off the wood lagging quite nicely.

J

Offline Gas_mantle

  • Full Member
  • ****
  • Posts: 1332
  • North Yorks - UK.
    • My Youtube channel
Re: Old Style Oscillator
« Reply #19 on: December 28, 2017, 08:56:14 PM »
I quite like the look of little ocillators.

I guess when you make a lot of engines you start to run out of new colours, it seems like once you exhaust the green, black, red and blue there isn't must else left ;-)

Offline philjoe5

  • Full Member
  • ****
  • Posts: 1011
Re: Old Style Oscillator
« Reply #20 on: December 28, 2017, 10:14:10 PM »
Well there might be others  :cartwheel:

Phil
If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.  - Mark Twain

Offline Gas_mantle

  • Full Member
  • ****
  • Posts: 1332
  • North Yorks - UK.
    • My Youtube channel
Re: Old Style Oscillator
« Reply #21 on: December 28, 2017, 10:15:47 PM »
You ought to link them up as a throaty V10  ;)

Online crueby

  • Full Member
  • *****
  • Posts: 8648
  • Rochester NY
Re: Old Style Oscillator
« Reply #22 on: December 28, 2017, 10:16:07 PM »
Well there might be others  :cartwheel:

Phil

Thats what happens when you feed the engines after midnight, they start to breed!

 :ROFL:

Offline Jasonb

  • Full Member
  • *****
  • Posts: 6463
  • Surrey, UK
Re: Old Style Oscillator
« Reply #23 on: December 29, 2017, 04:55:22 PM »
The last complicated bit of work on the cylinder was sticking it all together with a few blobs of Silver solder which went quite well and I'm liking the new Sievert torch that Santa gave me. Half hour in the pickle had it looking clean even if the bronze was a bit pink



That left me with what was essentially a simple cylinder  "casting" that could be treated like any other and machined on the surfaces that matter followed by poking some holes in where needed.



Cylinder end covers next I think.

J

Offline Gas_mantle

  • Full Member
  • ****
  • Posts: 1332
  • North Yorks - UK.
    • My Youtube channel
Re: Old Style Oscillator
« Reply #24 on: December 29, 2017, 05:26:52 PM »
I like that cylinder fabrication, it looks just like a casting  :)

Is it entirely bronze ? I've never worked with bronze but presumably it silver solders well ?

Online crueby

  • Full Member
  • *****
  • Posts: 8648
  • Rochester NY
Re: Old Style Oscillator
« Reply #25 on: December 29, 2017, 05:39:49 PM »
That came out excellent!  How did you hold the parts to the main body for soldering? Are there pins or screws?

Offline Jasonb

  • Full Member
  • *****
  • Posts: 6463
  • Surrey, UK
Re: Old Style Oscillator
« Reply #26 on: December 29, 2017, 05:43:41 PM »
The two end flanges are brass and so is the rectangular bar that has the steam passages milled into it. Main cylinder was cut from hollow SA660 bronze, cross rod that forms the pivot from the same and the valve block from LB4 which is another leaded bronze. But it all solders up very easily and is nice to machine being harder than the typical gun metal castings you get.

Stood it on end to solder so gravity kept the two end flanges in place, cross rod located and took the weight of the valve block and I just put a twist of wire around it to hole in place

Online Jo

  • Administrator
  • Full Member
  • *****
  • Posts: 12416
  • Hampshire, england.
Re: Old Style Oscillator
« Reply #27 on: December 29, 2017, 06:13:30 PM »
Is that a casting flaw on it?

Jo
Usus est optimum magister

Offline Jasonb

  • Full Member
  • *****
  • Posts: 6463
  • Surrey, UK
Re: Old Style Oscillator
« Reply #28 on: December 29, 2017, 06:20:12 PM »
Well you have got to make them look authentic ;)

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 13459
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: Old Style Oscillator
« Reply #29 on: December 29, 2017, 07:26:49 PM »
That turned out very well Jason!  At this speed, should be running in a few days.

Bill