> Were these one-off setups or is it possible to easily adapt the
> existing TR3/4 rear axle to disk brakes?
Anything is possible, but it certainly wouldn't be easy.
> It appears to me that it would only require a
> bracket to support the caliper
Even that is kind of tricky ... where does the bracket attach ? The
existing brake plate bolts under the bearing housing, so the thickness
cannot change unless you re-engineer either the axle or the axle housing.
And IMO the existing plate, while adequate for drum brakes, probably isn't
heavy enough to support a caliper securely. Certainly OEM disc brake
caliper brackets (including on the TRs) are much heavier stuff.
> and some means to effect a parking brake.
Which almost certainly the race cars didn't have.
You forgot adapting a rotor to the existing hub, which sounds kind of tricky
to me, too.
I've seen rear disc brakes on a TR3/4, but it was done by changing the
entire axle assembly, usually to a shortened Ford 9" from a car with rear
discs.
The real question, IMO, is why ? You'll overheat the front brakes long
before the back ones, and it takes a LOT to overheat the front brakes. I've
raced down mountains and not had any trouble with the stock brakes
overheating. I have managed to overheat them as an experiment, but it took
a very determined effort with full throttle combined with heavy braking for
many minutes. And the back brakes still worked just fine.
If you're just looking for "bling", go buy a Honda.
:)
Randall
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