[Fot] Southwick bearing issue

[Peter Vucinic]

Dave,
If you want to send me some pics that would be good.
If you have a single indentation in the inner race, then it looks like the
fault started there. With a single indentation. Most likely a fitting
problem occurred when a lot of pressure was put through ONE of the balls,
through the inner ring, thus causing the indentation. However, minor the
indentation, failure will commence at that location. Driving over that pot
hole again.

If the outer ring is a 'loose fit' and the inner ring has a s=ingle,
significant defect, then it is possible that the outer ring may crack. I
would still ensure the fit between the outer ring and the housing is
correct. Should be 'size for size' with the bearing. 

Cheers...





-----Original Message-----
From: Dave [mailto:dlhogye at comcast.net] 
Sent: Tuesday, 2 September 2014 11:20 AM
To: Peter Vucinic
Subject: Re: [Fot] Southwick bearing issue

Peter,
Now that I'm back in the shop.  
I couldn't imagine how the seal could have failed so soon and was stupefied
by the crack in the race.  The bearing has an O ring seal on the outer race
and the race has a close fit to the flange.  The assembly slips into the
flange and is held on by what I think is referred to a C clip Ford
arrangement.  The Ford flanges are welded onto the Triumph axle tubes.  
Then after cutting the outer race off, I inspected the inner race and there
is just one 1/4" size crater in the race and no other signs of damage and
the crack in the outer race is clean with no noticeable fragmentation. 
Thanks for the input.

Dave

Sent from my iPad
> On Sep 1, 2014, at 5:48 PM, "Peter Vucinic" <pvucinic at netspace.net.au>
wrote:
> 
> Wow, That even makes it more important to check the fits etc. That's 
> very low miles indeed. Of Course, the quality of the original bearing 
> may have a large contributing factor in the life span.
> 
> I have seen on occasion bearings that have not been finished ground 
> and the hardening is not quite up to scratch!
> 
> Cheers...
> 
> "You can Make a Small Fortune From Motor Racing. As long as You 
> Started With A Lage Fortune!"
> Kind Regards
> Peter Vucinic
> TR-4
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> -----Original Message-----
> From: Dave Hogye [mailto:dlhogye at comcast.net]
> Sent: Tuesday, 2 September 2014 9:53 AM
> To: Peter Vucinic
> Cc: Friends of Triumph
> Subject: Re: [Fot] Southwick bearing issue
> 
> Oh, btw, the axle assembly had only a few hundred miles on it.
> 
> Sent from my iPhone
> 
>>> On Sep 1, 2014, at 2:50 PM, "Peter Vucinic" 
>>> <pvucinic at netspace.net.au>
>> wrote:
>> 
>> Dave,
>> I am assume you are talking about a Tapered Roller Bearing Cup? Or is 
>> it a Complete Ball Bearing?
>> Did the race crack ACROSS the raceway? Or Was it around the 
>> CIRCUMFERENCE of the raceway?
>> 
>> If a bearing CRACKS through a raceway, the Bearing fit was incorrect. 
>> OR it may have been damage when fitted and then a crack has 
>> propagated
> from there.
>> Check for any damage on the outer edge of the bearing next to the crack. 
>> 
>> Cheers....
>> 
>> "You can Make a Small Fortune From Motor Racing. As long as You 
>> Started With A Lage Fortune!"
>> Kind Regards
>> Peter Vucinic
>> TR-4
>> _______________________________________________
>> fot at autox.team.net
>> 
>> http://www.fot-racing.com
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>> Donate: http://www.team.net/donate.html
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>> 
>> -----Original Message-----
>> From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of davehogye
>> Sent: Tuesday, 2 September 2014 2:56 AM
>> To: Friends of Triumph
>> Subject: [Fot] Southwick bearing issue
>> 
>> Hello Friends,
>> I was looking into the fact that an axle seal on my Southwick 
>> conversion blew, or at least I thought it was a seal problem, but I 
>> just pulled the axle out and found that the outer race had cracked
> through.
>> I thought I had something going on because while watching my race 
>> video from last October I heard what sounded like a bearing or 
>> perhaps gear whine when I pulled into the paddock after the race. The 
>> sound wasn't obvious until I heard it on the vid.
>> Anyway, during a recent check of things I noticed grease was slinging 
>> out of the seal and onto the brake plate. I was thinking how the heck 
>> did the seal fail in such a short time.
>> Now I'm wondering how the heck the race broke. 
>> WTF,
>> Dave
>> _______________________________________________
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>> 
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