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

Help with loco build please

All Topics | Latest Posts

Search for:  in Thread Title in  
mark6101/11/2019 11:52:10
12 forum posts
1 photos

I am building a 5" gauge 0-6-0 "Jinty" whih has inside cylinders and as a result the centre driving axle takes the form of a crankshaft.

The next job is to fit the wheels to the axles. I understand the principles of quartering and have made a jig for this purpose.

My question is, does the crankpin on the centre wheel have to be aligned with a precise point on the crank axle or can I fit it at any random point, just ensuring that the crankpin on the opposing wheel is offset by 90 degrees?

I hope I've explained my problem clearly,

Thank you,

Mark.

Nigel Bennett01/11/2019 16:08:53
avatar
500 forum posts
31 photos

It would be usual to position the outside crankpins at 180 degrees from the adjacent big end. This is for balancing, as the coupling rod assists in balancing out the connecting rod. Not something you can do with an outside-cylinder engine! You may also find that the balance weights on the driving and coupled wheels are very differently positioned to each other. See photos of the full-sized locos.

mark6101/11/2019 16:18:37
12 forum posts
1 photos

Thanks for that Nigel, I appreciate you taking the time to help me out. Your answer makes a lot of sense so thats what I'll do.

Cheers,

Mark.

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