between the smokebox and the boiler

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between the smokebox and the boiler

Post  tractor mike on Tue 23 Oct 2012, 11:46 am

hello to everybody, can i ask a couple questions, is there any sealant to go between the smokebox and the boiler? and is there any sealant to go between the cylinder bloke and the boiler, hope everybody is getting on well with there build, i will post some pics over the next couple days to show how im getting on.

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Re: between the smokebox and the boiler

Post  lynnr on Tue 23 Oct 2012, 11:52 am

Hi Mike

No jointing compound between smokebox and boiler. It will possibly drip a couple of time but will seal up.

Cylinder to boiler will have 2 gaskets and a uniform smear of folic gunge between each and the metal.

Both details are specified in the very good instructions from Steve.


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between the smokebox and the boiler

Post  tractor mike on Tue 23 Oct 2012, 11:59 am

hi lynn thats great, i havent got to fitting the cylinder bloke yet but i thought i would ask before i get there and i couldnt see anything about the smokebox/boiler thats why i thought i would double check, thanx for the reply and i see u have yours in steam and it looks great on the video, well done i bet your real pleased

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Re: between the smokebox and the boiler

Post  lynnr on Tue 23 Oct 2012, 12:10 pm

Very pleased as this is the first time for me building an engine. Only had a short time with a friend north of Daventry last feb for a learning session.

I did a great number of hours test steaming before she even moved an inch! I think about 50 hours in total. I was confident in all the reciprocating and rotational parts. But absolutely no experience of the steam side. Father was a mechanical inspector for RSA before retiring so kept me in check.

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between the smokebox and the boiler

Post  tractor mike on Tue 23 Oct 2012, 12:29 pm

im gladded u are happy, u have done a good job and hopefully mine turns out the same, im like u, its all a new experience i do very little with steam, im a tractor man really and now my collection has grown that much i running out of storage room, i wanted to do something different and i want my boy to get in with steam so i thought i would take the plunge and build a road loco

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between the cylinder and the boiler

Post  tractor mike on Wed 07 Nov 2012, 9:39 am

it may sound stupid but like ive said before im new to this steam business so u wil get silly questions from me, but on the top of the boiler where the cylinder sits there is 7 threaded holes, is there a reason for them to be threaded and does anything go in them many thanx

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Re: between the smokebox and the boiler

Post  lynnr on Wed 07 Nov 2012, 10:08 am

Simple answer.

When the boiler was pressure tested. All holes need to be filled hence all holes a threaded to take blanking plugs/studs

There is multi holes in stead of one big one as multi holes reduce the water lift effect during high steam demand.


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between the cylinder and the boiler

Post  tractor mike on Wed 07 Nov 2012, 10:17 am

hi lynn thats great, its a good job your on here many thanx

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