Steve,
The other major problem is that if the top end of the shoulder
harness is mounted below the shoulder, in an accident, as you
body will go forward and the shoulder belt will place a downward
force on your shoulders, compressing the spine. This is
potentially dangerous. If you really want a shoulder harness,
add a roll bar and mount the top to it.
Regards,
Jack Brooks
Hillsdale, NJ
1960 TR3A TS69032LO
1974 Norton 850 Commando Roadster
> -----Original Message-----
> From: owner-triumphs@autox.team.net
> [mailto:owner-triumphs@autox.team.net]On Behalf Of
> Steven Newell
> Sent: Tuesday, March 21, 2000 1:24 PM
> To: R. John Lye; Triumph Mailing List
> Subject: Re: 5 pt harness/TR4 options?
>
>
>
> "R. John Lye" wrote:
>
> > >Has anyone installed a 5 point harness on original
> seat (without a rollbar)
> > >or replaced their seats in a TR6, I am considering
> doing this to autocross
> > >the car.
> >
> > You really don't want to have a five point harness
> in an open car without
> > a roll bar;it is extrememly dangerous. In the rare
> case of a rollover, you
> > really don't want the high point of the car being
> your head! R. John Lye
>
> Besides a road test of the TR4, one of the old mags
> the PO passed along has a
> photo series of a autocrossing bugeye in a
> cartwheeling roll. The guy apparently
> broke his arm, otherwise fine. Had a lapbelt and a
> small rollbar.
>
> I understand John's point -- i.e. nice to be able to
> duck -- but this guy looked
> kind of s-t-r-e-t-c-h-e-d out by forces of physics
> during the roll, so it looked
> like his head would have been the highest point
> *despite the rollbar*. Which
> would have been a Very Bad Thing had he not also
> cartwheeled, so that the car
> didn't hit flat upside down till it came to rest. Is
> it realistic to think you
> *can* duck during a roll?
>
> If not a full harness, can anyone share experience
> AFA installing a shoulder
> belt in a TR4? I won't be autocrossing, but after the
> engine rebuild I will be
> driving around a major city every sunny day I can.
>
> [BTW, mine is an early '62 w/ the TR3-style seats.
> PO-installed lapbelts, and
> the period rally [compression?] lapbelt in the boot]
>
> --
> Steven Newell
> Crave Technology, Denver, CO
> 303.675.0777 / 303.675.0999 (fax)
>
>
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