Hi Ian
assuming that you are going to fit them to the boat together as one unit then just a few inches lower than the out casing should do.

Hi Ian There are normally second hand pumps for sale at the SBA AGM , Have a word with Richard Havard (a fellow SBA member) . He has lots of stuff for steam boat builders. or contact Iain Miles your area rep. Both are fairly local to you. Have you looked at the sales/supplies page on the SBA website...

www.mscdirect.co.uk
if you use the monthly flyers which are also on the website then they are fairly good on price

steamboatjack wrote:Victas are on the SBA directory of suppliers and have been for some time.
Jack

I knew I should have checked

As the cost of either bronze or cast iron is the same I would prefer bronze cylinders.
I am half way into building the 6 inch pump, I wish now I went for the 12 inch.

gallanach wrote:Malcolm Duckett sourced the insulation material for his boiler from https://shop.vitcas.com/

Cheers

Based in Bristol, I see. they seem to have a good range of stuff suitable for building boilers. Should they be added to the SBA website as a known supplier?

Mike Rometer wrote:Speak to a kiln manufacturer, they have it chapter and verse, and know who supplies what, from where, and how much.

Yep to the above, I was given a old kiln, got mine out of that.

Great news

Remember you can buy these ready made up from places like Machine Mart. Also the inner does not have to go all of the way to the top.

It is all very simple, the inner flue has 3 stainless sticky out bits riveted to the top. just a bent L shape. Slide the outer over the inner and the bottom of the outer just rests on the casing. not fixed. Held in place by its weight. The inner does have a slight force fit into the stub as the bott...