Hill, Stephen M EDUC:EX wrote:
>
> My understanding is there is a difference between the Vixen and the M series
> brakes. I believe the M series uses a complete TR6 front brakes, including
> the upright. The Vixen uprights are not TR6, probably Herald,
In fact 12/50 Drum brake Herald uprights. See
http://www.ukmotorsport.com/vixen/parts/front_suspension.html
but visually
> similar to Spitfire. (There was a string on this 6 months ago.)
>
> Where it get wierder is my 1970 Vixen has the older, smaller uprights but
> uses TR6 calipers and pads. I have to say I don't know what disks it uses. I
> always thought TR6, but I could wrong. We have to allow for variances within
> the Vixen range. My 1970 2500 was at the end the Vixen period, and may have
> different stuff from the 1800's. I suppose you could always the disk turned
> down, if it fit in every other way.
There are many "overlap" cars which are neither one model nor another
but somewhere in between. This could be yet another example.
John
>
> Stephen
>
> > ----------
> > From: Dr John Upham[SMTP:webmaster@ukmotorsport.com]
> > Reply To: Dr John Upham
> > Sent: Wednesday, November 29, 2000 2:28 PM
> > To: TVR US mailing list; Polly, Craig J
> > Subject: Re: tvr,s
> >
> > Craig,
> > I have copied your enquiry to the US TVR mailing list in the
> > hope that someone can shed some light on your problem.
> >
> > Polly, Craig J wrote:
> > >
> > > Hello John,
> > > I've hit a problem with my 1800s rebuild. I have been
> > > rebuilding the brakes and I have found that the new TR6 disc's that I
> > have
> > > bought do not allow the brake calipers to fit. The old disc's that I
> > took
> > > off are a good 1" smaller on the o/dia .Does this mean that I need the
> > > caliper mounting plate from a TR6 ?.
> >
> > As far as I knew, TR6 discs are 10.75" in diametre but I'm no expert
> > on TR6s.
> >
> > I am now a little concerned that I have
> > > the correct uprights and steering arms as I have had a quick look at my
> > > 2500m and it seems on quick inspection that the mounting holes in the
> > > steering arms may be different.
> >
> > I think the Ms use different steering arms to Vixens.
> >
> > The rear brakes are also smaller than TR6
> > > items which adds to my confusion.
> >
> > It adds to mine as well. I would expect 9" drums at the rear.
> >
> > > From your parts list the upright should be herald drum
> > brake
> > > these obviously allow the fitment of larger TR6 disc's but do they have
> > any
> > > identification features ?. The ones I have the steering arm passes
> > through
> > > them.
> > >
> > > Any advice would be helpful
> > >
> > > Regards,
> > >
> > > Craig
> > >
> > Lets hope someone else can help.
> >
> > Regards,
> >
> > John Upham, TVRCC Helpline.
> >
> >
> > --
> > Dr John Upham, The UKMotorSport Index,
> > http://www.ukmotorsport.com/, webmaster@ukmotorsport.com,
> > Voice: +44 (0) 976 634 053 (W), Voice: +44 (0) 125 287 2551 (H),
> > Voice: +44 (0) 976 634 053 (M)
> > Registered address: Reid House, Mill Hall, Cuckfield, West Sussex RH17
> > 5HX
> > Registered number: 3445711
> >
--
Dr John Upham, The UKMotorSport Index,
http://www.ukmotorsport.com/, webmaster@ukmotorsport.com,
Voice: +44 (0) 976 634 053 (W), Voice: +44 (0) 125 287 2551 (H),
Voice: +44 (0) 976 634 053 (M)
Registered address: Reid House, Mill Hall, Cuckfield, West Sussex RH17
5HX
Registered number: 3445711
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