[Fot] Al-Fin Drums

[John Styduhar]

If you look at page 5 on the Kastner Drive Preparation CD you will see that
the alfin rear drums on the racing TR4 are radially-finned.  The photo
caption says that these were a gift from the factory Competition
Department.  So they were using a design similar to the Z-car.
Hey Kas, can you shed some light on this?  Thanks


On Wed, Mar 5, 2014 at 1:20 PM, Marcel Van Mulders <
van.mulders.marcel at telenet.be> wrote:

> Years ago, Moss Europe was selling Alfin drums with radial fins, only good
> for looks but not for racing.
> Now, Moss is selling Alfin drums with circumferential fins, just like the
> factory option : these are very strong and longlasting in racing. I made a
> big hole in the backplate (1.5") and a row of 1/3" holes in the drums. I
> believe these holes are a great help for cooling by air circulation inside
> the drums
> Marcel, Belgium
> -----Oorspronkelijk bericht-----
> Van: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] Namens
> davehogye
> Verzonden: woensdag 5 maart 2014 16:39
> Aan: Todd Redmond
> CC: Triumph 'Friends of Triumph
> Onderwerp: Re: [Fot] Al-Fin Drums
>
> I think that I removed almost a half inch of material off to clear the
> backing plate. The drums were inexpensive and had Centric packaging. I
> could
> get the part number if need be.
>
>
> Dave H.
>
> ----- Original Message -----
> From: "Todd Redmond" <alfetta95 at optonline.net>
> To: "John Styduhar" <johnstydo at gmail.com>
> Cc: "Triumph 'Friends of Triumph" <fot at autox.team.net>
> Sent: Wednesday, March 5, 2014 6:57:01 AM
> Subject: Re: [Fot] Al-Fin Drums
>
> Yep! That's the loving i meant.
> Thanks John.
>
> Sent from my iPhone
>
> > On Mar 5, 2014, at 9:51 AM, John Styduhar <johnstydo at gmail.com> wrote:
> >
> > II think the loving that Todd was talking about is to enlarge the
> > Z-car drum's center hole slightly to slip over the axle hub and to
> > machine the outside lip of the stock TR brake backing plate to fit
> > into the recess between the drum's steel lining and the aluminum
> > casting around the perimeter of the drum. That worked for me.
> >
> >
> >> On Tue, Mar 4, 2014 at 7:22 PM, Robert M. Lang <lang at isis.mit.edu>
> wrote:
>
> >>
> >> Hi,
> >>
> >> I was putting together a list of "Stuff" for a possible new Triumph
> >> racer and I noticed none of the usual places (US suppliers) have
> >> al-fin drums listed now...
> >>
> >> Anyone care to comment on availability?
> >>
> >> We're talking 9" drums for TR6 and probably TR4.
> >>
> >> I saw them on the Brit sites, but not on the US web sites.
> >>
> >> Regards,
> >> rml
> >> ------------------------------------------------------------
> >> ---------------
> >> Bob Lang Triumph TR6!! | This space for rent Former NER Solo Chair |
> >> Voice:617-253-7438 | Cell: 339-927-4489
> >> ------------------------------------------------------------
> >> ---------------
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