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Re: [Fot] Aluminum rear brake drums

Subject: Re: [Fot] Aluminum rear brake drums
From: Todd Redmond <>
Date: Fri, 21 Jun 2013 11:16:14 -0400 (EDT)
Cc: "" <>
User-agent: Laszlo Mail 3
WOW is right!  And it was sent from an iPhone!   (small keyboard lots of 
typing) Geez us

Thanks Tony!

On Fri, Jun 21, 2013 at 8:17 AM, Tony Drews wrote:

> Wow.  Just... wow.  What GREAT information.  I love this group!
> Tony D (the other Tony)
> At 02:36 AM 6/21/2013, TR4 Tony wrote:
>> Todd
>> Bastuck remanufactured these 9.055 inch drums based on the old 240z 
>> pattern,
>> but both the quality and machining is variable. The sell them 
>> specifically to
>> fit the TR hub pattern. You need to do a lot of work to these to make 
>> them
>> right, including the more obvious dimensional mods as the shoes don't 
>> sit
>> nicely in them.
>> Brembo used to similarly make a repro in 240z configuration. These 
>> were ok.
>> Same issues as above though.
>> The best solution is to get old 240z drums and machine these up, but 
>> some
>> caution on relining needed - the issue is the lining detaching so if 
>> your guys
>> get round this then fine, if not its a bad job.
>> There are other alloy drums out there at the moment supplied by MOSS 
>> one in 9
>> inch and one for the 10 inch axle. These are mainly supplied through
>> Racestorations and a sister company. I've tried all of these and the 
>> quality
>> is very poor and a big accident waiting if you use the 10 inch ones
>> particularly. The aftersales service when I had a problem was 
>> disgraceful so
>> make your own judgement on that one.
>> The only alloy drums I could recommend are the Typecast vintage 
>> replicas which
>> are supplied in 10 inch - these are proper cast and spun items and a 
>> really
>> good job. These guys are on the web as and in Leicester 
>> UK. Next
>> up would be old Datsun finned type.
>> Also note that alloy drums are fragile - one good hit and they 
>> shatter -
>> except the typecast ones which are made of a higher quality 'softer' 
>> material.
>> Not great for howling round on the loose.
>> In terms of braking performance, the tests that I did a few years 
>> back on a
>> good sample of all the various drums on my (heavy) rally car showed 
>> up the 10
>> inch steel drums as having the most stopping power metre by metre. 
>> The 9 inch
>> alloy 240 z drums were close, but only because I'd toleranced them to 
>> a set of
>> shoes that Ted S sent me years back - they were on a trigger and the 
>> whole
>> shoe seated beautifully. Mintex M1144 shoes were also good and I used 
>> those as
>> the 'control'.
>> Having said all that you really have to be at the outer edge before 
>> you get
>> any benefit over the standard steel drum when its properly vented,
>> particularly on the 10 inch .... Even when too hot to touch. So for 
>> the cost
>> I'd go on a diet of costly fish food to lose the weight if it got 
>> that
>> critical.
>> Regards to all
>> Tony
>> Sent from my iPhone
>> On 20 Jun 2013, at 12:38, "Bill Tobin" <> 
>> wrote:
>>> Hi Todd, the quick answer is I don't think so.
>>> There are a couple differences between the Z drums and Triumph 
>>> drums. I
>> think one of Kas' books explained them.
>>> By what I hear, the finned aluminum drums are no longer available.
>>> BTW, I recently bought a set of Z drums on e-bay and am planning on 
>>> fitting
>> them to my TR6. I'll keep you posted.
>>> Cheers, Bill
>>> ----- Original Message ----- From: "Todd Redmond" 
>>> <>
>>> To: <>
>>> Sent: Wednesday, June 19, 2013 12:06 PM
>>> Subject: [Fot] Aluminum rear brake drums
>>>> Fot,
>>>> Looking at buying a used set of Datsun 240z Aluminum finned rear 
>>>> brake
>> drums. Found a pair.
>>>> Might be a silly questions but can these be relined?
>>>> Thanks
>>>> Todd
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