DUCATI TT and F1 FORUM
 
It is currently Sat Nov 18, 2017 2:28 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 26 posts ]  Go to page Previous  1, 2, 3  Next
Author Message
 Post subject: Re: Cranckshaft bearing
PostPosted: Mon Jul 31, 2017 9:33 am 
Offline
User avatar

Joined: Tue Mar 18, 2014 10:03 am
Posts: 170
Hi Filippo...
The use of the word float can be confusing. It means side to side or end to end movement, not up and down like a boat.
Are you still using the stock 350 cams?
Regards...
Flattop


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Mon Jul 31, 2017 1:07 pm 
Offline

Joined: Wed Aug 27, 2014 3:36 pm
Posts: 80
Hi Flattop
I make mistake, for"floating" I meant "axial play" as the manual.
In Italian "gioco" that is the same as "play".
https://www.ducatimeccanica.com/350_650 ... s/h-12.htm


Yes I want to use stock 350 cams.

Ciao
Filippo


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Mon Jul 31, 2017 9:53 pm 
Offline
User avatar

Joined: Tue Mar 18, 2014 10:03 am
Posts: 170
Hi Filippo...
Apologies.....my mistake.
The English language is the craziest one on the planet.
Regards...
Flattop


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Tue Aug 01, 2017 10:14 am 
Offline
User avatar

Joined: Wed Sep 11, 2013 7:13 am
Posts: 159
Filippo,
Skf made the angular bearings in three verslons, with iron, bronze and resin cage.
Difference was the max revs they could turn.
Fit crank without shims, measure play and then put 0,10 to 0,15 thicker shims in.
After tightening the cases the crank should turn over without help.
As said : I did the gearbox before and took it out for easier working.
Ciao
Ducadini

_________________
Nego i ricordi peggiori, richiamo i migliori pensieri


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Wed Aug 02, 2017 1:55 am 
Offline

Joined: Wed Aug 27, 2014 3:36 pm
Posts: 80
Hi Flattop, it's a pleasure!
On this site I learn twice, about engines and about English.


"Fit crank without shims, measure play and then put 0,10 to 0,15 thicker shims in.
After tightening the cases the crank should turn over without help."
Hi Ducadini, now is all clear, I will try to do as you say.

Thank you everybody.
Ciao
Filippo


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Wed Aug 09, 2017 10:42 am 
Offline

Joined: Wed Aug 27, 2014 3:36 pm
Posts: 80
Hi all
I managed to remove the crankshaft bearing with same kind of tool I made by me.
The left bearing came out without heating . Just few, very soft ,Hamner Shots.
https://www.flickr.com/photos/156916018 ... res/8FC1H0

Ciao
Filippo


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Thu Aug 10, 2017 1:39 am 
Offline
User avatar

Joined: Tue Mar 18, 2014 10:03 am
Posts: 170
Hey Filippo...
The bearings do not look like angular contact or roller bearings. Straight cut or helical primaries in the motor?
What are the stamped numbers-letters on the 350 cams?
Regards...
Flattop
Took a better look at your photos. Yes.... angular contact bearings. At first sight it looked like black seals on the bearings.


Last edited by flattop900 on Thu Aug 10, 2017 10:11 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Thu Aug 10, 2017 9:19 am 
Offline

Joined: Thu Oct 14, 2010 7:30 am
Posts: 139
Those RHP bearings use a pretty thick phenolic ball separator. Would need to see the other side of the bearing to be sure. If the bearing came out easily without heating it would be a good idea to use some Loctite on the outer race when you re- assemble the engine. You don't want the race to spin in the case at high revs/load. Continued use with loose races can damage the cases.


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Fri Aug 11, 2017 6:03 am 
Offline

Joined: Wed Aug 27, 2014 3:36 pm
Posts: 80
Hi Flattop
350 stock Cams are marked with O 3 and V 3 see pics
I take more pics on the bearing but these a 're still blurry. Sorry
Hi wdietz186 which kind of Loctite I have to use?
https://www.flickr.com/photos/156916018 ... res/74M852

See link for bearings and cams
Ciao e grazie
Filippo.


Top
 Profile  
 
 Post subject: Re: Cranckshaft bearing
PostPosted: Fri Aug 11, 2017 11:15 am 
Offline
User avatar

Joined: Wed Sep 11, 2013 7:13 am
Posts: 159
Filippo,

Was the discussion only about the crankshaft bearings or also about the 6207 and 6307 ?
You can use the FAG bearings without problem, doesn't have to be SKF.
Just be sure to order the correct ones : RS for one side oilseal, 2RS for double side oilseal.
SKF has a great site where You can find all info on their bearings.

ciao
joseph

_________________
Nego i ricordi peggiori, richiamo i migliori pensieri


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 26 posts ]  Go to page Previous  1, 2, 3  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Template made by DEVPPL