[Fot] Supplier for Brake (drums) for TR4

Tue Oct 24 13:35:36 MDT 2017

Hi gang, 
I have been using the repop Datsun aluminum drums on my TR3. They are from Centric. There are two choices, standard and premium. I have ordered two premium pairs and machined them to fit the TR backing plates, hubs and wheel studs. 
I replaced the first set because I damaged the fins on one and decided to replace both in order to keep even wear. 
The first set had been working fine with no signs of unusual wear or cracking. I think they had 8 race events and a couple thousand miles on them. 
I can't imagine what is different between the standard and premium, besides price. I could not get any information of that topic from any supplier, including whether they were cast iron or aluminum. 
For the premium price, which might have been $50 or $60 a piece, it's worth changing them as soon as a problem arrises, even if it's every couple of seasons. 
I would definitely go for the UK units that Marcel uses, but I think they are very expensive and shipping is too. I think they were over $300 a piece if I remember correctly. 
I never go cheap, but do try to be rational and sensible. 
I have been using the same set of standard shoes from SBS all along. I think they are glued on. 

Dave H. 

----- Original Message -----

From: "rek46 at aol.com via Fot" <fot at autox.team.net> 
To: "John Styduhar via Fot" <fot at autox.team.net> 
Sent: Monday, October 23, 2017 1:33:23 PM 
Subject: Re: [Fot] Supplier for Brake shoes for TR4 

Try Porterfield 

Sent from my HTC on the Now Network from Sprint! 

----- Reply message ----- 
From: "John Styduhar via Fot" <fot at autox.team.net> 
Date: Mon, Oct 23, 2017 12:39 pm 
Subject: [Fot] Supplier for Brake shoes for TR4 
To: "fubog1" <fubog1 at aol.com> 
Cc: <ryan.murphy at fdlco.wi.gov>, "Triumph 'Friends of Triumph" <fot at autox.team.net> 

The OEM Datsun Z finned aluminum drum is a nice retrofit. Several of the racers and street enthusiasts have installed them. The conversion doesn't require much modification. Lighter weight and cooler running that steel drums. Like Triumph parts, the original Z drum is what you want, not the aftermarket piece. Can be machined to 9.055" dia. Lot's of info in the FOT archive.  

On Mon, Oct 23, 2017 at 7:37 AM, fubog1 via Fot < fot at autox.team.net > wrote: 

As the drum gets thinner/closer to the regrind limit, it will have a tendency to warp & get bell-shaped. 
I can't explain the difference in the cost between the drums, but in my experience the cheap drums/discs/etc are cheap for a reason, and not suitable for hard use. 
Glen 

-----Original Message----- 
From: timmmurphh--- via Fot < fot at autox.team.net > 
To: fot < fot at autox.team.net > 
Cc: ryan.murphy < ryan.murphy at fdlco.wi.gov > 
Sent: Sun, Oct 22, 2017 7:59 pm 
Subject: Re: [Fot] Supplier for Brake shoes for TR4 

Thanks to all who replied regarding the brake shoes. I’ve ordered a set from Ted Schumacher. The drums didn’t clean up with 0.025 removed from a side (final size 9.050). It would take another 0.020 on a side to clean the drums up making them 9.090 diameter. I think that is probably too much to take off but I’m not sure. We have a set of original drums on a street car rear axle that we could try and clean up or I can order some new ones. There seem to be two type of drums available; $27 ones and $58 ones (Moss). Nothing in the specs as to why the difference. Any input on drums would be appreciated. 
Tim & Ryan Murphy 
1961 TR4 #317 BRG 
From: timmmurphh at gmail.com [ mailto:timmmurphh at gmail.com ] 
Sent: Wednesday, October 18, 2017 11:32 AM 
To: fot at autox.team.net 
Cc: ryan.murphy at fdlco.wi.gov 
Subject: Supplier for Brake shoes for TR4 
The left rear brake shoe lining came off the shoe at Blackhawk Farms last weekend. I am looking for suppliers for brake shoes with riveted linings as the one that came off was a “glued” lining. I’d also like to specify the lining to use, the Carbotech linings whose pads we use and like on the front discs. I’m also open to any suggestions about what to use for the rear brake shoes. The above would just be my preference based on the latest experience. I see Revington has competition shoes with “Mintex 20” linings I think for about $120 a set which appear to be rivited. Anyone with experience with these brake shoes and linings? 
Thanks in advance for any info you can provide. 
Tim & Ryan Murphy 
1961 TR4 #317 BRG 
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