If it is a vintage race car, you can run a hardtop and build the car to FIA
specs. I run a factory top and an off the shelf bar with welded in
reinforcements. The top also keeps the sun off you when you are sitting at
grid.
Kelvin.
> -----Original Message-----
> From: Eric [mailto:eric@erickson.on.net]
> Sent: Wednesday, March 29, 2000 10:11 PM
> To: Michael Torrusio
> Cc: MG CHAT LIST
> Subject: Re: Bodily Dimensions
>
>
> Michael Torrusio wrote:
> >
> > Question:
> > We are going to get a roll bar for our 71B. Is there any
> reason why
> > you are having one built rather than getting one through say, Moss?
>
> > >
> > > I have a person who is building me a rollbar (yes,
> finally) and he
> > > would like to get materials and some construction happening
> > > before this weekend when I can give him my car for a few
> hours for
> > > the final fitting.
> > >
>
>
> Michael,
>
> Yep, it is a racing thing. The main reason is because I want
> the top of
> my head to stay where it is and because I race my car and our rules
> state that the rollbar needs to be more than 50mm above the driver's
> head (to stop you losing the top of your head or breaking your neck if
> you turn turtle).
>
> Most 'off the shelf' rollbars don't conform to this -
> especially if you
> are wearing a helmet.
>
> The other requirements are that there needs to be a diagonal
> crossmember, or a "tranverse tube between a top corner of the main
> rollbar and a lower mounting point on the other side of the rollbar",
> plus, for further strength I will have two "backstays".
>
> As you see... not the usual "off the shelf" rollbar and one which will
> probably prevent me from putting the roof up (unless I can find some
> ingenious modification to either the roof/frame or rollbar which fits
> all requirements). I can make the rollbar (half cage) 'removable' to
> return it to a 'roofed' vehicle for 'normal' driving.
>
>
> Eric
> '68MGB MkII
>
|