2″ Scale Clayton Undertype

2″ Scale Clayton Undertype

This topic has 3 replies, 3 voices, and was last updated 26 January 2016 at 06:50 by Brian H.

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28 August 2015 at 10:56 #202279
Neil Bradshaw
Participant
@neilbradshaw24930
Good Morning.

Can anybody help me with some advice on repairing rebuilding a boiler of a 2" scale clayton undertype.

I picked up what IO though was a bargain of ebay but it has turned out to be a bit of a headache but that another story.

The boiler is a bit roughly put together it has a couple of leaks which I have repaired but Im not happy with the state of the smoke tubes.

They have been silver soldered then flattened to keep in place it looks quite a mess.

The main shell of the boiler is in excellent condition and with a little bit of work Im sure it will be ok.

What I want to know is, can I drill out the smoke tubes and replace them with new tubes, is this normal practice, not recommended or too tricky.

I cant stretch to replacing the boiler so repairing might be my only option.

Thanks

Neil

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28 August 2015 at 10:56 #2827
Neil Bradshaw
Participant
@neilbradshaw24930
Re Tubing Boiler
28 August 2015 at 12:05 #202285
Neil Wyatt
Moderator
@neilwyatt
The best answer has to be 'ask the person who will be testing the boiler for their advice'.

Neil
26 January 2016 at 06:50 #222617
Brian H
Participant
@brianh50089
Posted by Neil Wyatt on 28/08/2015 12:05:33:

The best answer has to be 'ask the person who will be testing the boiler for their advice'.

Neil

Neils advice is definitely the best for the first step. I'm assuming that the boiler is an all copper one using the correct thicknesses of copper. If so then it should be possible to drill the tubes from both ends to remove them and replace with new ones, silver soldered into position.

The boiler and tubes will have to be VERY clean, possibly pickled in a fresh acid bath as should the silver solder (Easiflo No 2).

Drilling out the old tubes needs to be done very carefully with a drill that is not too sharp or it will grab in the copper. I'd be tempted to make up a counterbore with a pilot to fit the inside of the tube.

Please let us know how you get on with the repair.
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