Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Builds, Repairs, Show Your Machines! => Technical Tips, Builds, and Help => Topic started by: Jim on May 07, 2019, 11:05:43 pm

Title: Re: Boiler PreHeater
Post by: Jim on May 26, 2019, 07:45:14 pm

Thanks Bruce, it does make a difference pumping hot water into a boiler.

Title: Re: Boiler PreHeater
Post by: St Paul Steam on May 26, 2019, 06:04:26 am

fine looking pre-heater Jim, & robust as well (as all your builds are), I must have missed this before.

Title: Re: Boiler PreHeater
Post by: Jim on May 10, 2019, 08:43:34 pm

Hi Bob, I asked because those feet remind of how Geoff (Ozsteamdemon) did feet on his water towers etc, but I didn't remember him making a pre-heater.

Its very very nice.

Title: Re: Boiler PreHeater
Post by: Hero on May 10, 2019, 08:35:44 pm

I'd like to say I made it, Jim, but it ain't so. I have no idea, though, of who did make it.

Go here for what I know of this plant and a better picture of the pre-heater:

https://www.officeofsteamforum.com/collections-pictures/stuart-s50-steam-plant/

Title: Re: Boiler PreHeater
Post by: Jim on May 10, 2019, 07:49:13 pm

Bob who made that ? It looks great.

Title: Re: Boiler PreHeater
Post by: Hero on May 10, 2019, 07:24:50 pm

Here's the pre-heater for my Stuart steam plant (S50 with 501 boiler). It uses waste heat from the engine exhaust.

[attachimg=1]

Title: Re: Boiler PreHeater
Post by: Jim on May 08, 2019, 08:48:33 pm

Thanks Nick, it makes a huge difference pumping boiling water into the boiler instead of cold water.

Now I'd just like to get something like a Stuart pump to automate that process and retire my PMR hand pumps  :)

Title: Re: Boiler PreHeater
Post by: Nick on May 08, 2019, 07:46:00 pm

I didn't realize how big this was till I made it down to the pictures with the engines/boiler and video. I would say it looks dang good for an early attempt and I would be very pleased to have it in my collection! And if you're still not happy, well... let's see you make another  ;) ;D

Title: Re: Boiler PreHeater
Post by: Jim on May 07, 2019, 11:11:25 pm

https://youtu.be/Dk6LfkVpgbE

Title: Re: Boiler PreHeater
Post by: Jim on May 07, 2019, 11:11:00 pm

https://youtu.be/19VrvnGK3oA

Title: Re: Boiler PreHeater
Post by: Jim on May 07, 2019, 11:09:58 pm

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Title: Re: Boiler PreHeater
Post by: Jim on May 07, 2019, 11:07:39 pm

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Title: Boiler PreHeater
Post by: Jim on May 07, 2019, 11:05:43 pm

I made this boiler preheater some time ago, works brilliantly. I know that is some very (very) rough silver brazing, I've learnt a bit since then and
would like to think that if I made this again it would look a lot nicer. Oh well, I just have to say to myself that it gives it some unique character.

Here's some photos of it and a video below.

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