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[gondolier88]

In December Model Engineer there is a model construction article of a Yarrow boiler- 4 pages with plnty of pics- very suitable for marine applications and explains watertube boiler construction very well - I think- I havn't read it properly yet- that's how dedicated I am to trying to help.......is there a smiley with a halo Martin?

Well wortrh a read though.

Greg

[kiwimodeller]

Greg, it will be Feb before the Dec issue gets here and you cannot buy it through bookshops but I will try and hunt a copy down through the club as i recently bought quite a large Yarrow boiler and an unfinished Warrior engine. Club records show the boiler was tested in 1988! but it has never been used. Strangely it has been built with Metric Fine threads in the bushes so I will either have to re - tap them or make fittings or adaptors. I have been told that these boilers need a very good feed pump as the water capacity is small in relation to the amount of steam they can produce. Can you comment on this? Thanks, Ian.

[gondolier88]

Hi Ian,

Nice little setup you have there.

YES ALWAYS have a permanent feedpump linked to a watertube boiler- theyr'e halfway between a monotube and a shell boiler with characteristics of both- the best in my opinion.

I can't remember now- does the warrior have a feed pump?

Greg

[kiwimodeller]

I did not get one with it but as I said it was never finished but I am sure there are plans for one in the literature that came with it. Several other projects to finish first but it was a bargain buy and I will get to it one day. Thanks for your help, Ian.

[Hammer]

The yarrow wright-up in the M.E. would drive very big model, full size steam launch? Hammer.

[gondolier88]

Can you divide by 0.5?

Greg

[Hammer]

Greg, I think 125 would be more my size. Have a look at simple boiler thead . Hammer

[Hammer]

I do think it's good to have an article on boilers at last. Hammer

[Steam Head]

Hi All,

I have a Mendip boiler, which looks mighty like a Yarrow to me. I bought it new less than a year ago.

If I can shed some light please ask. I could take a photo or two maybe, but it's hard to get a good shot in there, but I have a plethora of photos on the subject. I love boilers.

The advice of a GOOD feedwater is very accurate indeed. Don't leave it, unless you're absolutely sure of your pump, (not like my bodgy Weir junk.) I think an engine driven pump is the safest.

I also have a large Scotch Return boiler, and, I think it's a dead-heat which is the most powerful.

If I can help please ask. I am just new on the Forum and I may get lost for a while, but I'll find you in the end.

Regards Steam Head.