Dave,
The modification to the rotor side of the hub is not significant. What is
involved is to drill and tap four 5/16 inch threaded holes in the opposite
flange where it is pretty "meaty". A spacer is machined to fit the gap
between the two flanges, providing the additional stability for the outer
flange.
I had mine converted with several that Henry Frye put through a machine
shop (multi-hub discount) for my street/AutoX TR3 in anticipation of
getting dedicated wheels and super sticky tires for Autocrossing. The hard
part was finding long enough machine bolts (fully threaded) to span the
gap. I couldn't find them and ended up chasing the threads myself.
I have don't have the pictures here at work, but I am pretty sure I still
have E-pictures on my home PC. I'll send them to you during the weekend.
I don't know who devised up this modification, but it is a great way to
provide additional support the outer flange.
Jack Brooks
1960 TR3A
1980 TR8
1974 Norton 850 Commando
Hillsdale, NJ
webmaster - NJ Triumph Association
http://www.njtriumphs.org
>-----Original Message-----
>From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net]On
>Behalf Of SpiwakD@aol.com
>Sent: Friday, October 13, 2000 10:37 AM
>To: fot@autox.team.net
>Subject: (no subject)
>
>
>Amici
>
> A local TR3 racer is planning to reinforce his front hubs
>by welding
>some metal into the depression between the flanges (perhaps two
>crescents of
>rebar). I suggested he wait until I sought the advice of the FOT
>seers. I did
>mention to him the tip about through-bolting the flanges together, but he
>thought the extra holes on the rotor side would weaken the
>flange. I welcome
>any comments on this project. How many front hub breaks have there been?
>Where do they break?
>
> Dave
>
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