Author Topic: The Bolton -Bertinat -Bailey Triple expansion engine  (Read 54334 times)

Offline steam guy willy

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #195 on: November 04, 2025, 03:56:58 AM »
the width of the bid ends have now been turned to the dimension and I have done this by holding them in a mandrel in the collet chuck that was drilled and tapped 6mm then sawn down and a grub screw inserted to hold the rod in place .the rod was then turned at quite a slow speed as there is no counter weight in place...

Willy
« Last Edit: November 05, 2025, 08:06:27 PM by steam guy willy »

Offline steam guy willy

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #196 on: November 05, 2025, 02:48:14 AM »
The con rods are done and the crossheads are now awaiting their slippers. Sad news over here with news that the Strumpshaw steam rally has been cancelled for 2026 and here is the press release. The museum will still be opening and a few other events next year, this has allways been a fantastic event and all the relevant stalls will be sadly missed

Willy

Offline Michael S.

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #197 on: November 05, 2025, 10:14:32 AM »
Hi Willy,

The three connecting rods look good 👍.

Too bad about the cancelled event.

Regards, Michael

Offline steam guy willy

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #198 on: November 05, 2025, 08:20:07 PM »
thanks Mike, and yes one of the stalls at the site had masses of offcuts of desirable materials and another stall was full of tools and other stuff too ...fortuntely I have stocked up with these items over the years...there was always lots of items that the chap had no idea what they were used for ??!!!
cheers

willy

Offline steam guy willy

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #199 on: November 10, 2025, 02:18:23 AM »
The slippers are now being made ..I used a length of brass 5/8th X 1/4 " and the slot for the crossheads  3/8th was milled first and  apiece of square brass was soldered in place , it was then turned over and the 7/16th slot was milled..the small slot was milled to be able to hold in the milling vice using the protruding 3/8 brass piece..The slippers will be held in the crosshead  to drill the retaining screws accurately and the protuding parts will be removed later....
Willy

Online crueby

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #200 on: November 10, 2025, 02:36:10 AM »
Nice way to make all those slippers.   :popcorn: :popcorn:

Offline steam guy willy

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Re: The Bolton -Bertinat -Bailey Triple expansion engine
« Reply #201 on: November 11, 2025, 02:23:43 AM »
Hi all and thanks Chris ..the first crosshead is coming along fine and looks the part....so ..the other two need finishing off and a trial set up will be undertaken ..........

Willy

 

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