In the beginniung we found that the hubs broke because they were using a
SQUARE key in the axle and as the hub tried to turn it would actually roll
up over the key and break the casting. We milled the axle/hub to take a
3/8" x 1/4" key and elenminated the problem. Same thing on the Spitfire.
----- Original Message -----
From: Barr, Scott <sbarr@mccarty-law.com>
To: <fot@autox.team.net>
Sent: Wednesday, February 16, 2000 6:46 AM
Subject: The Hub of the Issue
> Hi all,
>
> Joe Curry and I have been discussing, off list, the question of GT6 hubs
> and their tendency to break, leaving a perfectly nice GT6 rolled into a
> ball. From time to time on the list, we've discussed this issue and
> various fixes, from GT6Steve's beautifully done 240Z hubs with TR6 axles
> to CNC-machined replacements made from metallic elements obtainable only
> from asteroids.
>
> But here's the question of the moment: WHY do the hubs break?
>
> Is it increased cornering forces that are the problem or is it something
> else? The failures I've seen or heard about were all related to
> cornering. So is it cornering forces that crack the hubs, or do the
> hubs crack for whatever reason and then the cornering forces break off
> the axle because the cracked hub is wallowing around?
>
> I'm looking for any opinions at all, from first-hand scientific analysis
> to general belly-button-picking (as someone here so aptly put it). I'd
> prefer to keep my GT6 shiny side up and rubber side down and am just
> looking for some data before I pick a fix.
>
> Scott Barr
> sbarr@mccarty-law.com
>
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