[Fot] was Detroit Locker now TR axle breaking.

[N197TR4 at cs.com]

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 body quickly. 
> 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, <A HREF="mailto:tony at tonydrews.com">tony at tonydrews.com</A> wrote:
> 
> >> 
>> Or, you could just drive slow. :)
>> 
>> - Tony
>> 
> 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20090314/6083359c/attachment-0001.htm>