[Fot] TR4 axle shafts

[jkhagen at charter.net]

Friends in Rust,  I have  '62 TVR Grantura with TR3-4 rear hubs,[keyway] 
brakes, drums.  The rear is independent suspension but "quill shaft" 
outer end is same configuration as TR-3-4---Car has been raced since 
1992. [hubs =same]  I upgraded the quill shaft from David Gerald [keyway 
and all] to aircraft steel [S1-55e] Rating.  David Gerald runs these on 
V-8 500HP Griffiths.  No failures.  I would suggest that if the outer 
portion of the shaft does not bend--[better steel]  and tight fit--you 
would have a hard time breaking it!   John Hagen


On Mon, Jan 20, 2014 at 4:12 PM, MadMarx wrote:

> Ken,
>
> I had this talk with the tech people of the ASN.
> Answer:
> "A axle upgrade in this way is an advantage in performance and not 
> allowed.
> You can run harder on curbs than the car without upgrade and might 
> gain
> speed from it. Not granted."
> Then I came up with safety issues.
> Answer:
> "You choose your race car. If your car is not suitable for racing, 
> it's your
> problem. Where should it end? One car has small brakes, other ones 
> have soft
> wishbones and so on. You have to run it as it is."
>
> So the only thing I can do is to change the shaft.
>
> Cheers
> Chris
>
> -----Urspr|ngliche Nachricht-----
> Von: Kenneth Knight [mailto:kknight at klaenv.com]
> Gesendet: Montag, 20. Januar 2014 15:47
> An: 'MadMarx'
> Betreff: RE: [Fot] TR4 axle shafts
>
> Chris:
>
> Sounds like you need to have a talk with the tech folks where you 
> race.  The
> stock axle housing will remain with the Southwick conversion, it will 
> just
> be safer, and easier.  Our club allows modifications for safety. 
> These cars
> are 150 years old, no sense in getting someone hurt or destroying a 
> car just
> because it wasn't done that way in the 1960's.  To the guy that 
> protests the
> modification I would say, "what if it breaks and I take YOU out in the
> crash?"
>
> Good luck, I hope you come up with a simple and safe solution that is 
> cost
> effective.
>
> Ken
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