[Fot] was Detroit Locker now TR axle breaking.

[fubog1 at aol.com]

"Just curious, but has anyone looked at MGB axles? What is their 
history?"

The earlier MG cars, including A & early B, used a nice fully-floating 
axle design. The later B uses a (very robust) semi-floating axle.

Glen

-----Original Message-----
From: N197TR4 at cs.com
To: tr3a58 at verizon.net; tony at tonydrews.com
Cc: fot at autox.team.net
Sent: Sat, 14 Mar 2009 9:08 am
Subject: Re: [Fot] was Detroit Locker now TR axle breaking.

List,



I have mentioned this before but I took a TR3/4 Hub into our Axle 
Engineering folks at John Deere for a thorough examination.  One of the 
outcomes was that "it is designed to break".....this might have been a 
bit facetious, but the fact is that it works well to have the hub break 
before the axle.



The stress risers are located in the hub in such a way that breaks in a 
conical shape and traps the hub and wheel on the car. If you look, the 
cutting tool comes to sharp corners with no attempt at a radius.



In search of the weakest link, the axle is next. My vote remains with 
Southwick.



Just curious, but has anyone looked at MGB axles? What is their history?



Joe A



Driving slow is not the answer either. I broke the left rear axle on 
the Warwick in turn 6 at Roebling Road. I was lucky in that turn 6 is a 
slow carasoul and when the axle broke the wheel exited out the 
fiberglass body20quickly. The brake backing plate just bulldozed the 
Georgia sand out of the way and did not dig in enough to cause it to 
roll over. The Warwick uses the same TR3 hub and tapered axle even 
though it is a De Dion axle. The same as the TR3 all the way to the 
same key way with stake point to prevent the key from going in too far. 
This is right where it broke. The same place as any TR3 & TR4 I have 
seen.



A year later and the Warwick is back together but with a redisigned De 
Dion axle with hubs from a 280ZX. Sorry but I am not racing with any 
more TR hubs....



Dean T.





Mar 13, 2009 08:53:55 PM, tony at tonydrews.com wrote:





Or, you could just drive slow. :)



- Tony_______________________________________________
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