[Fot] Thrust washers

[RACER BUD]

also...hard braking in a race moves the crank forward
Racer bud
Spitfire #21
----- Original Message ----- 
From: "Greg Lunker Hilyer" <Lunkercars at earthlink.net>
To: "Randall" <tr3driver at ca.rr.com>
Cc: "Friends of Triumph" <fot at autox.team.net>
Sent: Sunday, March 09, 2008 4:37 PM
Subject: Re: [Fot] Thrust washers


> Seems to me that clutch loading pushes the crank forward and therefor  
> the front washer[s] take the force. If the main cap were misaligned  
> rearward, the block journal half of the thrust washer would take all  
> the load. If the misalignment was slight, with clutch in, the rear  
> washer would still have clearance - not load... Or what am I missing?
> 
> Just went and re-inspected and mic'd it. Wear is actually minimal - . 
> 001"-.002" depending where I measure as compared with the other 3  
> halves. The failure area is not consistent around the radius but  
> rather "pock marks" in 3 distinct areas there the next layer of  
> material is exposed. Going back to my theory above, if the crank had . 
> 004" thrust clearance and the main cap was .002" out of alignment,  
> the rear would not come into contact until that .002" was worn off.
> I'm now starting to put 2+2+2 together and including my pressure  
> plate failure [explosion?] into the equation. That incident [race  
> before last] is why, in addition to general freshening, I've got the  
> crank out to be crack checked. Now seems likely that the violence  
> from the clutch cover coming apart [it destroyed the bellhousing]  
> perhaps combined with the misalignment of a less than robust part  
> added up to what I found.
> Thoughts? Comments? Please?
> Greg "Lunker" Hilyer
> TR4 #314
> Albuquerque NM
> On Mar 9, 2008, at 5:17 PM, Randall wrote:
> 
>>> Makes perfect sense.
>>
>> Not to me ... can someone explain what I'm obviously not seeing :  
>> how the
>> load on the front washer can be more than the load on the rear  
>> washer ?  Cap
>> misaligned means not enough clearance, that's obvious.  But the  
>> lower rear
>> washer would be just as tight as the upper front washer, plus it  
>> would carry
>> the load from the clutch.
>>
>> Randall
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