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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@tonydrews.com";>tony@tonydrews.com</A> wrote:
>
> >>
>> Or, you could just drive slow. :)
>>
>> - Tony
>>
>
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<HTML><FONT FACE=3Darial,helvetica><FONT SIZE=3D2 PTSIZE=3D10>List,
<BR>
<BR>I have mentioned this before but I took a TR3/4 Hub into our Axle Engine=
ering folks at John Deere for a thorough examination. One of the outco=
mes was that "it is designed to break".....this might have been a bit faceti=
ous, but the fact is that it works well to have the hub break before the axl=
e.=20
<BR>
<BR>The stress risers are located in the hub in such a way that breaks in a=20=
conical shape and traps the hub and wheel on the car. If you look, the cutti=
ng tool comes to sharp corners with no attempt at a radius.
<BR>
<BR>In search of the weakest link, the axle is next. My vote remains with So=
uthwick.
<BR>
<BR>Just curious, but has anyone looked at MGB axles? What is their history?
<BR>
<BR>Joe A
<BR>
<BR><BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-=
LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Driving slow is not the ans=
wer either. I broke the left rear axle on the Warwick in turn 6 at Roebling=20=
Road. I was lucky in that turn 6 is a slow carasoul and when the axle broke=20=
the wheel exited out the fiberglass body quickly. The brake backing plate ju=
st bulldozed the Georgia sand out of the way and did not dig in enough to ca=
use 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 ke=
y way with stake point to prevent the key from going in too far. This is rig=
ht where it broke. The same place as any TR3 & TR4 I have seen.=20
<BR>=20
<BR>A year later and the Warwick is back together but with a redisigned De D=
ion axle with hubs from a 280ZX. Sorry but I am not racing with any more TR=20=
hubs....
<BR>=20
<BR>Dean T.
<BR>
<BR>
<BR>Mar 13, 2009 08:53:55 PM, <A HREF=3D"mailto:tony@tonydrews.com";>tony@ton=
ydrews.com</A> wrote:
<BR>
<BR><BLOCKQUOTE TYPE=3DCITE style=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-=
LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">
<BR>Or, you could just drive slow. :)
<BR>
<BR>- Tony
<BR></BLOCKQUOTE>
<BR></BLOCKQUOTE>
<BR>
<BR></FONT></HTML>
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