Greg,
I am almost certain I had those calipers on a Volvo from the 60s. I had a
whole string of 122s, including a wagon (223), as well as a P1800S. The
P1800S had 4-pots; some of the earlier 122s had 2-pots, so I think it was
either the middle 122s or the wagon (~67-68 timeframe) that had the three
pots.
Somehow they had both front wheels and one rear wheel on each of the two
braking circuits, so if one side went they said you would still have 80%
braking.
Regards,
Jim Wallace
At 09:46 AM 1/7/01 -0700, you wrote:
>Date: Sun, 7 Jan 2001 11:04:08 EST
>From: Windoseat@aol.com
>Subject: Three pot Girling calipers
>
>Hi;
>
>I was over visiting the relatives tonight and my father-in-law was cleaning
>out the garage. He showed me a box of four Girling calipers that have three
>pistons. One large and two smaller ones on the opposite side. I took one home
>and checked it against the caliper from my GT6+. It is an exact match as far
>as overall size and location of the mounting points.
>
>Anyone ever hear of this kind of arrangement?
>
>My father-in-law thought they were for a larger car like Jag and the three
>pot arrangement was design to fint inside a particular wheel. The caliper
>also has a spacer between the halves to fit a ventilated rotor. The spacer
>was added by Kelsey Hayes during a development program my father-in-law was
>working on at the KH test facility back in the 60's
>
>Just thought this was kind of curious and wondered if anyone could shed any
>light on the three pot arrangement?
>
>Greg Wolf
>1970 GT6+ "Ian"
>KC79746L
>Bridgewater, Michigan
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