[Fot] Al-Fin Drums

[Kas Kastner]

Th Alfin drums furnished to my by the factory had fins that are thicker
than the Datsun type. The fins are 90 degrees to the diameter of the
drum. The Datsun fins are a lot thinner but more of them. Bastuck in
Germany is making drums like the factory parts and I believe are available
from the USA dealers for his parts. He makes good stuff. You can see the
factory drums on my Sebring cars of 1963 on page 5. Photos and both types
on page 228 of my new download "Triumph PreparationHandbook *New Edition*"
which is a download or a CD disc. The same page gives you details on how to
modfiy the Datsun drums to fit the Triumph backing plates and hub.

*Never be beaten by equipment.*


On Wed, Mar 5, 2014 at 11:27 AM, John Styduhar <johnstydo at gmail.com> wrote:

> 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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