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tow bar
by G Walker - 24/08/26 06:52 PM
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Forums39
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Jun 14th, 2026
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Joined: Sep 2022
Posts: 1,163 Likes: 354
Has a lot to Say!
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Has a lot to Say!
Joined: Sep 2022
Posts: 1,163 Likes: 354 |
Sorry I'm only today come to look at the brakes more closelyIn my PlusFour model year 2022 it is a single-piston brake. The manufacturer can not be identified ![[Linked Image]](https://tm-img.com/images/2023/01/20/3D1D3BE0-7BA7-4AB3-A88A-F3E200DBF217.jpeg) ![[Linked Image]](https://tm-img.com/images/2023/01/20/3688CE9F-C30C-4CD5-A88A-5987B75C70DD.jpeg)
Clemens
PlusFour Red Baron MY 2022
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Joined: Aug 2010
Posts: 82 Likes: 1
Just Getting Started
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Just Getting Started
Joined: Aug 2010
Posts: 82 Likes: 1 |
And the sliding mechanism isn’t protected by a rubber covering as most cars are, they’re open to the elements and if not used often enough they will seize up.
Last edited by p8mog; 20/01/23 07:09 PM.
Heron Grey Plus Four 2021
Previous:-
Connaught Green 4/4 1988
Black Plus 8 1998
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Joined: Nov 2018
Posts: 6,666 Likes: 433
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,666 Likes: 433 |
Is that not a dual piston? One piston either side of the disc.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Jun 2015
Posts: 2,085 Likes: 69
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2015
Posts: 2,085 Likes: 69 |
Is that not a dual piston? One piston either side of the disc. No signs of a hydraulic line connecting across to the other side?
Doug
2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Joined: Nov 2018
Posts: 6,666 Likes: 433
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,666 Likes: 433 |
Is that not a dual piston? One piston either side of the disc. No signs of a hydraulic line connecting across to the other side? It'll travel through the body of the caliper - with a single pot, the caliper usually slides in a carrier, on dual pots the pads slide on pins.
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Nov 2018
Posts: 6,666 Likes: 433
Talk Morgan Sage
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Talk Morgan Sage
Joined: Nov 2018
Posts: 6,666 Likes: 433 |
My 1972 had dual pots with no connecting line. ![[Linked Image]](https://www.tm-img.com/images/2022/06/06/282017640_10166117052040034_6595677168008678428_n.md.jpg) Same with the uprated 4 pots, no line ![[Linked Image]](https://www.tm-img.com/images/2020/04/26/v1SQyPVN8H6iekaqHxp83z2ykiRv4ry6a-FDNQ-X6Lw2E7y6RbF_nvUSnGQaA6f4qKOVgFt8Ay4U_bE6rUGMri_Tz5QuQVXZMQjqxe_8zUnLORlNXPpjIli4LpNBLSb32vuIS2cyvEZ5ay9ad36KKzUbbHOpmNbjNZ0fuTTHGRdEwv1onnmebujlKGs-bF_1lB0fBV99.jpg)
"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10
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Joined: Sep 2022
Posts: 1,163 Likes: 354
Has a lot to Say!
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Has a lot to Say!
Joined: Sep 2022
Posts: 1,163 Likes: 354 |
It's not easy to photograph this... played with the brightness again. I only see a piston on the inner side where the vent is placed. ![[Linked Image]](https://tm-img.com/images/2023/01/21/9256808C-E559-4C43-BEDB-72F51ED6518B.jpeg)
Clemens
PlusFour Red Baron MY 2022
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Joined: Jul 2022
Posts: 206 Likes: 15
L - Learner Plates On
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L - Learner Plates On
Joined: Jul 2022
Posts: 206 Likes: 15 |
If you take the pads out you will eliminate the guess work and know for sure, looks easy enough.
Previous Mog Plus 4 Fiat Twin Cam.
Plus Six
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Joined: Aug 2010
Posts: 82 Likes: 1
Just Getting Started
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Just Getting Started
Joined: Aug 2010
Posts: 82 Likes: 1 |
As I’ve said before, it’s a single piston.
Heron Grey Plus Four 2021
Previous:-
Connaught Green 4/4 1988
Black Plus 8 1998
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Joined: Jul 2019
Posts: 5,432 Likes: 466
Charter Member
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Charter Member
Joined: Jul 2019
Posts: 5,432 Likes: 466 |
Thanks for posting the pic Clemens.
Unfortunately the mechanism that allows the calliper to slide back and forth as the brakes are applied and released is not obvious from the angle you took the pic from.
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