By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th


Building the boiler

All Topics | Latest Posts

Search for:  in Thread Title in  
RICHARD CALLIS27/09/2019 13:44:08
3 forum posts

In the 2018 boiler guide it states that either the water gauge or injector can be fed from the manifold but not both. Has anyone overcome this.



Paul Lousick27/09/2019 13:58:02
1369 forum posts
531 photos

The Australian code for model steel boilers states that the water gauge shall be connected to the boiler independent of all other fittings, including the steam manifold. Reason being that any take-off of steam to a fitting attached to the water gauge will lower the pressure and will give a false reading in the gauge.


tractionengine4227/09/2019 15:05:59
365 forum posts
105 photos
Posted by RICHARD CALLIS on 27/09/2019 13:44:08:

In the 2018 boiler guide it states that either the water gauge or injector can be fed from the manifold but not both. Has anyone overcome this.



I've built a 3" Allchin with a steel boiler.

I fitted a plug between the two ports on the manifold, then ran a pipe from the boiler to the other end of the manifold so that the manifold is fed from both sides and each side only feeds one outlet.

My boiler has two ports under the crankshaft, I used one of these, I fitted a custom low profile elbow to it and ran the pipe under the gears and up to the manifold, it's a bit tight but easy enough to find a route that does not clash with anything moving. I used 1/4" pipe.

If you're building a 1-1/2" with a copper boiler then maybe you can add a threaded bush to the top of the boiler in a suitable location.


Edited By tractionengine42 on 27/09/2019 15:29:55

Former Member27/09/2019 16:11:12

[This posting has been removed]

RICHARD CALLIS30/09/2019 19:14:52
3 forum posts

I would like to thank everyone for get back to me with their comments.

My next stage is to split the manifold and at the forecoming model show look at finished models to find a point in the boiler top where I can fit an extra bush.

I will update you when I have the answer



JasonB30/09/2019 19:39:38
17821 forum posts
1948 photos
1 articles

Bill, you must be looking at different engines to me. The first three on station road steam all have the water gauge, injector feed, water lifter feed and pressure gauge all off the same manifold as per the drawings.

Richard, at the end of the day it will be your boiler inspector who will have the final say so talk through any solution swith him before cutting metal.

JasonB30/09/2019 19:53:52
17821 forum posts
1948 photos
1 articles

This photo shows the manifold that fixes to a pad on the top of the boiler so all 4 items are off the manifold


One option may to enlarge the front left fixing hole and use a banjo type fitting and run a short length of pipe from that to the top of the water gauge. Though check clearance to gears.

Edited By JasonB on 30/09/2019 19:56:12

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
Allendale Electronics
Eccentric July 5 2018
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest