Classic cars forum & vehicle restoration.

exbmc · Posted: Thu Jan 24, 2013 8:26 pm Post subject: Bronze bearing manufacturers

I need a little help, finding a company who can restore bronze crankshaft bearings. A company in Chesterfield, were recommended, but have found they no longer do this work. If anyone has any information, could you post it up please? These bearings are no longer obtainable, so the job would involve removing the existing bronze, from the steel shells and remetalling. Then boring to size, because it's not a blue and scrape job, so i understand anyway.

Rick · Site Admin Joined: 27 Apr 2005 Posts: 22447 Location: UK

Might be worth speaking with Arnett's in Doncaster (I think), they did the truck engine and had to re-metal the bearings in that. Worth asking the question anyway.

RJ
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IanAl · Joined: 15 Jan 2013 Posts: 60

Hopefully you will have some luck with Ricks suggested company, but if you are still stuck try http://manufacturing.zibb.co.uk/profile/c+b+s+rotary+power+motion+ltd/gb/worcestershire/kidderminster/dy10+1jr/26011854

exbmc · Posted: Thu Jan 24, 2013 9:05 pm Post subject: bearings

Thanks Rick, that's a start. I will have a google for some contact details.

Ian, thanks to you as well. You posted within seconds of me. CBS looks very hopeful, and my boss's brother lives just up from them in Kinver, so a trip to take parts and a family visit could be on.

V8 Nutter · Joined: 27 Aug 2012 Posts: 587

A company called Coventry Boring and Metaling used to do that sort of work. I don't know if they still exist

D4B · Joined: 28 Dec 2010 Posts: 2083 Location: Hampshire UK

Guy Martin went to a place that did that on the Loco he was helping restore
in How Britain Worked (Channel 4) here is a clip watch the vid from about
35 minutes onwards (sorry if theres ads painful isn't it.....)

http://youtu.be/Rl5Dmfhm0u0?t=35m

exbmc · Posted: Thu Jan 24, 2013 9:46 pm Post subject: bearing makers

Yes they do V8. I have just had a google, and CBM are very much still in business. I will be able to have a ring around tomorrow. It's the material that bothers me to be honest. I have no idea of the spec of this bronze material, or if anyone works with it yet. White metal remaking would be so much simpler, but i don't think we can change to it.
The engine, for anyone who is curious, is an Elizalde Tigre 150hp.
It is a Spanish engine, to go in a Casa Jungmann, that was a license built version of the German Bucker Jungmann, a back end of WW2 trainer biplane. this particular unit, was built in 1948, so quite new compared to some of the stuff members on here tackle! Wink

Thanks also to D4B, i'll have a look at the vid.

Penman · Joined: 23 Nov 2007 Posts: 4759 Location: Swindon, Wilts.

Hi
You might find there is a need to get a particular spec in order to get your engine re-certified at zero hrs.
I wonder if shuttleworth (or one of the other major aviation museums) would be able to help with sources for aviation metals.

Alternatively one of the other owners of CASA 1-131 s might be able to help.
http://tinyurl.com/atvtwv9

Is yours on the list?
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exbmc · Posted: Fri Jan 25, 2013 1:46 pm Post subject: bearings

Penman, i should have said, it isn't mine. I work part time at a local airfield, mainly on the engine side. This is the sort of thing i get involved in, from time to time. Most work is on Lycoming or Continental products, spares and manuals all to hand. I work along with a CAA licensed engineer / LAA inspector who checks my handywork. This will be a permit engine, rather than C of A release.
It has to be spot on anyway, but the paperwork is much reduced.
We know the valve clearance is .012", and the cylinder base nuts are 60 ft/lbs, so we obviously need to obtain much more before anything is manufactured or put together. The owner has a photocopied Spanish manual, but it doesn't help a lot really. The engine has been years out of the air, and came with the aircraft. It is flying about on it's current 125 hp Tigre, and we hope to have the 150 ready for the back end of summer. G-BPTS if you want to look it up.

Salopian · Joined: 05 Jan 2010 Posts: 354 Location: Newport Shropshire

Looked it up and somewhat Tiger Mothish to my non flyers eye. Can only say sounds fun and good luck!.
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