By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Cylinder Liners

Fit Cast Iron liners to cylinder casting

All Topics | Latest Posts

Search for:  in Thread Title in  
John Andrews 212/10/2011 06:52:06
22 forum posts
I am building a 5" ga 2-8-0
 
It has Bronze castings for the cylinders, already machined to diameter.
The steam entry and exit is via slots cut into the body of the casting and the steam enters/exits via the passage between these slots and the liner.
The liner is of Cast Iron, and hence needs to be sealed. I used Loctite 620.
 
I was advised not to machine the liners and then fit them after due to the danger of breaking the liners.
 
The cylinders are too large to fit the liners and then machine on the lathe, so I turned the outside diameter to a sliding fit and loctited them into the casting. Then I bored them to size wih a boring head.
Unfortunately, the boring head was not correctly centered and I have 0.4 mm error in concentricity.
 
The minimum thickness of the liners is now 1.2 mm, and their OD is 43.2 mm
I had originally intended to make new liners and fit then fit them, as clearly they can be safely removed.
 
But If I can hold the recovered liner concentric, I could perhaps bore it out to concentricity.
HOW TO HOLD IT? It's too thin to but in the 4 jaw chuck. Some type of collet suggests itself. Or just give it away and start again?
 
John A
ady12/10/2011 07:31:50
612 forum posts
50 photos
Lots of setting up needed but I recall seeing a cylinder block secured to a lathe saddle, the boring tool was part of a bar running between the centres.
The cylinder head was traversed down the bed and the tool passed through its bores.
 

JasonB12/10/2011 07:37:28
avatar
25215 forum posts
3105 photos
1 articles
As Ady says leave them in the casting and either use a between ctrs bar or just put them back in the mill and open up with the boring head.
 
Could you also fit the cylinder to the faceplate using an angle plate or similar to hold it, my Fowler cylinder is a similar bore to yours
 

 
J
modeng200012/10/2011 07:52:42
340 forum posts
1 photos
This may be of interest,
http://modeleng.proboards.com/index.cgi?action=display&board=general&thread=5073&page=7#ixzz1GwAzNayO
 
John

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

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
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

 

Donate

donate