• Welcome to the website of the Vincent H.R.D. Owners Club.

    Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Hon. Editor and Webmaster by calling 07977 001 025 or please CLICK HERE.

    You are unrecognised, and therefore, only have VERY restricted access to the many features of this website.

    If you have previously registered to use this forum, you should log in now. CLICK HERE.

    If you have never registered to use this website before, please CLICK HERE.

F: Frame Friction Damper


erik

Well Known and Active Website User
VOC Member
On the C rapide which i restore are friction dampers on the rfm which have discs made of steel ,cadmium plated with three holes of different sizes.On my C comet there are discs in the dampers which are Aluminium alloy or stainless steel and only two holes.What is correct?regards Erik
 

A_HRD

Well Known and Active Website User
VOC Member
Two Holes. The centre one is 5/16 dia for FT129 bolt with a thinned and reduced head (0.445" Across Flats).
On early Series B machines the other hole had a 2BA bolt fitted (0.187" dia), but that was soon increased to 0.250" dia for a 1/4 BSF Bolt.

Peter B
 

chankly bore

Well Known and Active Website User
VOC Member
I've never seen stainless steel friction drums on an original machine, any other observations out there? I have one original? cad. plated drum with holes 2B.A., 1/4" and centre of 5/16". Perhaps its one of those RARE TRANSITION MODELS!!!!!! Or, more likely a bit of "make-do" scrimping at the Works. Why they didn't just enlarge the 2 B.A. hole is just another of those little beguiling mysteries.
 

erik

Well Known and Active Website User
VOC Member
the rapide is from 1951 and has the older design of the ufm .the friction drums are looking original and are not solid.they are hollow on the inside looking like cast parts.
 

Top