You are here: Home / Messages / Heavy Twins / Atlas Main Brgs

Atlas Main Brgs

Up to Heavy Twins

Atlas Main Brgs

Posted by don_raulin at March 18. 2017

I geuss I sent an email regarding subject

Assembling Atlas Engine #121497

One superblend and one roller!

When case halves are cinched up the last .040" on one side -engine locks as inner race binds against case bore surface

Looks as if roller brg is slight less in width ? or is case distorted?

Have no history as its an old basket job. Don Raulin USA

Re: Atlas Main Brgs

Posted by john_holmes at March 19. 2017

Surely if the inner race is binding on the case then the bearing is too wide or a bearing is not seated correctly. Have you compared the radii on the crank, crankcases and the bearing to ensure a radii mismatch is not stopping a bearing outer being fully home in its housing or bearing inner on a crank journal.

Re: Atlas Main Brgs

Posted by don_raulin at March 19. 2017

Have verified inners are all in on crank

checking outers in case tedious but will verify next and check radii on inners

will also search for bearing dimensions

Re: Atlas Main Brgs

Posted by don_raulin at March 19. 2017

found it! outer race timing side not fully seated, when I installed originally

, it dropped in so nice with warm case/iced brg race I thought it fully seated.

back to basics I preach-sometimes don't heed

Powered by Ploneboard
Upcoming Events
Brittania Rally - Denmark Aug 18, 2017 - Aug 20, 2017 — Jolly Roger Mc, Nørre Langgade, 8840 Rødkærsbro, Denmark
2017 International Rally Aug 24, 2017 - Aug 28, 2017 — Open Huis, Ieperstraat 157 - 8840 Staden, Belgium
2017 MGP Reunion Aug 29, 2017 03:00 PM - 06:00 PM — The Shore Hotel, Old Laxey Hill Laxey. Isle of Man IM4 7DA
Tay Valley Branch Camping Weekend - Town Yetholm Sep 08, 2017 - Sep 10, 2017
CRMC Track Parade - Anglesey Coastal Sep 09, 2017 - Sep 10, 2017 — A55, Ty Croes, Gwynedd LL63 5TF
Upcoming events…
This is Brio Diazo Plone Theme