Charlie Baldwin wrote:
> It seems that it is a common occurrence to hear of someone with a TD or
> TF breaking an axle shaft. This would lead one to believe that the
> original axle shafts are marginal in strength or resistance to fatigue
> failure. Many in the T series community have done something to increase
> the power of their engine, whether it be supercharging or tuning by some
> other means. If the axle shafts are inherently weak, then how do these
> hopped up street cars or racers fair? Do they break axle shafts with
> regularity? Perhaps the currently available shafts have much better
> strength due to better design or metallurgy.
> Is there anyone on the list who races his TD or TF or has done something
> to substantially increase the power? What have you done to avoid broken
> shafts? If they are available, who supplies stronger shafts and
> approximately how much power can they handle?
My first car out of High School was a 1949 MG TC. Soon after I bought
it, one of the axles snapped in the middle. I took the broken halves to
a neighborhood machine shop and had them mounted in a lathe and center
bored to take a 5/16" steel rod with a tight press fit. I hammered the
assembly together, then ground the join area down to a deep groove and
had the whole shebang welded with some really good strong welding rod
and then ground it smooth, leaving the general repair area a bit on the
thick side. I owned the car for a few months more, before my father
forced me to sell it. I never any further trouble with the axle after
the repair. If I owned a T-Series and had an axle break, this is exactly
what I would do to repair it.
My Victor TF-1 is an MG TF replica, but uses all MGB running gear, power
train, brakes and suspension, so it's not prone to this sort of failure.
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