Max Posted April 14 Report Share Posted April 14 I am working on brakes and I am wondering how much is the right thickness of the “substance “ on shoes, any help? Quote Link to post Share on other sites
BlueTR3A-5EKT Posted April 14 Report Share Posted April 14 (edited) Regarding ‘substance’. This is described as lining or friction material, Is it attached by rivets? In which case the rivets must be below the surface of the friction material by 1-2 mm if you are refitting. If it is a bonded or glued type lining then 2-3 mm minimum. You will hear and experience it if the lining has worn through. The brake shoe metal part can be re-lined if you cannot find new. https://custombrakes.co.uk/services/vintage-and-classic-cars/ Edited April 14 by BlueTR3A-5EKT Quote Link to post Share on other sites
Max Posted April 14 Author Report Share Posted April 14 Thank you, the friction material is glued. So if I want to renew all the shoes, front and back I can ask to make 5mm all of them? Quote Link to post Share on other sites
BlueTR3A-5EKT Posted April 14 Report Share Posted April 14 (edited) 26 minutes ago, Max said: Thank you, the friction material is glued. So if I want to renew all the shoes, front and back I can ask to make 5mm all of them? No. You will need to show them your brake drums and give them the original diameter. 10 inches front and rear. Or could be 10 inches front and 9” rear, depending on year. If they make them too thick you may not get the brake drums back on! I have an unused new brake shoe somewhere. Are you in a rush? Could take me a day or two if I can actually find it. That will give the correct original thickness. The re lining company probably have material that is up to 10 mm thick and will stick that on then machine the shoe assemblies to the correct diameter for the drums. You must ask them unless they have an original specification for your car and the brake type. Is this Girling or Lockheed brake system and what car? Edited April 14 by BlueTR3A-5EKT Quote Link to post Share on other sites
Max Posted April 14 Author Report Share Posted April 14 That could help me a lot, mine is a very early TR2, Lockheed… 10” and 9” behind so I will show them drums and ask how many mm? Hope you can find the new one, thank you Quote Link to post Share on other sites
Z320 Posted April 14 Report Share Posted April 14 Hi Max, if you give them to a specialist he must know the diameter of each drum, because very sure after +60 years they will not have the original diameter anymore. They will glue new friction material on the shoes - some millimeters more than needed. And next grind them down to the exact diameter, possibly you will get each pair special suitable for each drum. If you have not enough material on the shoes, the work like a block brake of an old wooden carriage. This is the case with new standard shoes in old worn drums. If you have too much the shoe lies like a „bridge“ on both ends of the liners in the drum and will also not brake. Good luck, Ciao, Marco Quote Link to post Share on other sites
Z320 Posted April 15 Report Share Posted April 15 Btw, this is an interesting issue, mostly not taken serious: new standard brake shoes for old brake drums! Commonly is stated they need some time to „bed in“, but for a perfect fit and for the self forcing effect possibly much more is needed: the shoes can be fixed wider as usual on a face chuck to cut the friction liners down to the perfect diameter. OR MORE SIMPLE - fit new brake shoes with new brake drums. This is what I finally did. Ciao, Marco Quote Link to post Share on other sites
BlueTR3A-5EKT Posted April 15 Report Share Posted April 15 1 hour ago, Z320 said: Btw, this is an interesting issue, mostly not taken serious: new standard brake shoes for old brake drums! Commonly is stated they need some time to „bed in“, but for a perfect fit and for the self forcing effect possibly much more is needed: the shoes can be fixed wider as usual on a face chuck to cut the friction liners down to the perfect diameter. OR MORE SIMPLE - fit new brake shoes with new brake drums. This is what I finally did. Ciao, Marco Excellent solution for fitting worn drums to new shoes if you have access to the machinery and measuring tool. I have measured the new original shoes I have. The 9" x 1.75" (rear ones) have 4.8 mm of friction material The 10" x 2.25" (front ones) have 4.7 mm of friction material. So...Your 5 mm suggestion is not a long way off. Where are you Max and who would you buy your spares from normally? Quote Link to post Share on other sites
Max Posted April 15 Author Report Share Posted April 15 Great news, thank you so much!!!…now I perfectly know how to renew all the shoes. i am from north of Italy, usually I buy my spare parts from “British Racing Green” they are a really professional team, they already advice me a workshop who works on friction material. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted April 15 Report Share Posted April 15 Hi Max, Not a supplier I know. Good to read you have an established relationship with a supplier you trust. Quote Link to post Share on other sites
Z320 Posted April 15 Report Share Posted April 15 (edited) On your avatar you are driving the Parco Giardino Sigurtá! I thougt this is no more possible since years? Is this a Mille Miglia number on your door? Ciao, Marco Edited April 15 by Z320 Quote Link to post Share on other sites
roy53 Posted April 16 Report Share Posted April 16 I have a new set of shoes with competition spec material supplied by Enterprises for a TR2 . Also original Alifin drums if anyone is interested that i had intended use but changed plans Roy Quote Link to post Share on other sites
Max Posted April 16 Author Report Share Posted April 16 (edited) 17 hours ago, Z320 said: On your avatar you are driving the Parco Giardino Sigurtá!I thougt this is no more possible since years? Is this a Mille Miglia number on your door? Ciao, Marco Ciao Marco, yes I was in the 2022 edition and all the cars acrossed the Parco Giardino Sigurtà, it was an amazing experience …of course normally the park is not allowed to any kind of car. Edited April 16 by Max grammar Quote Link to post Share on other sites
stuart Posted April 16 Report Share Posted April 16 2 hours ago, roy53 said: I have a new set of shoes with competition spec material supplied by Enterprises for a TR2 . Also original Alifin drums if anyone is interested that i had intended use but changed plans Roy Are they 10" Alfins, which type radial or finned? Stuart. Quote Link to post Share on other sites
Z320 Posted April 16 Report Share Posted April 16 1 hour ago, Max said: Ciao Marco, yes I was in the 2022 edition and all the cars acrossed the Parco Giardino Sugurtà, it was an amazing experience …of course normally the park is not allowed to any kind of car. I‘ve been there in 1997 (?) with my SLK when it was only allowed to „go“ there by car. That was scary but changed, I‘ve been told. I will look for a photo this evening. Quote Link to post Share on other sites
roy53 Posted April 16 Report Share Posted April 16 2 hours ago, stuart said: Are they 10" Alfins, which type radial or finned? Stuart. They are 10 " and the finned ones with a couple of the fins broken off. But when you think of their age . Roy Quote Link to post Share on other sites
stuart Posted April 16 Report Share Posted April 16 (edited) 11 minutes ago, roy53 said: They are 10 " and the finned ones with a couple of the fins broken off. But when you think of their age . Roy I know, Ive got them on the back of my Girling axle 4a Stuart. Edited April 16 by stuart Quote Link to post Share on other sites
Z320 Posted April 16 Report Share Posted April 16 believe it or not, this was 1999 and it was only allowed to visit the park by car and to stop and walk around only in special areas Quote Link to post Share on other sites
2long Posted April 17 Report Share Posted April 17 Anyone know if the radial Al-fins were an earlier type than the finned ones shown above, or if the two types were both offered at the same time? Is one type better or more valuable/rare? Dan Quote Link to post Share on other sites
roy53 Posted April 17 Report Share Posted April 17 All I can say is that they are mintex competition spec made 30 years ago so still asbestos Roy Quote Link to post Share on other sites
Max Posted April 17 Author Report Share Posted April 17 13 hours ago, Z320 said: believe it or not, this was 1999 and it was only allowed to visit the park by car and to stop and walk around only in special areas Wow!!!of course with SLK was easier, do you still keep it today?In those years I had a 200k but blue, I sold in 2005, what a "connection". That park is really nice and big. I saw very fast cause we was late for the "hour check point" and I was fighting with the "overheating" (was June ) but I will always keep a great memory of that ride. Quote Link to post Share on other sites
Max Posted April 17 Author Report Share Posted April 17 29 minutes ago, roy53 said: All I can say is that they are mintex competition spec made 30 years ago so still asbestos Roy i am really curious if they really improve the braking instead of some new kind of friction material Quote Link to post Share on other sites
Z320 Posted April 17 Report Share Posted April 17 Hi Max, the SLK was sold after 7 years ownership with 160,000 km on the clock for a good price. It was a good car but no reason to be sad that its gone. And perhaps - who knows - I will drive a SLK Supercharger again in some years.... Ciao, Marco Quote Link to post Share on other sites
james christie Posted April 17 Report Share Posted April 17 I had fun for three years with a 2015 200SLK. Why the K, I don’t know as by that time they had lost the Kompressor. One of the more electronically unreliable cars I have owned. It left us at 1200m in deepest Slovenia with an engine management board that decided to go into ‘stolen’ mode and refused to start. Later I had problems with the wheel captors failing which turned most things off. Fortunately all taken care of with an excellent warranty which I had the prudence to negotiate at purchase from the MB dealer. It had less room in the cockpit than my TR3 and when the roof was folded up into the boot, you could just about get a briefcase in there! BUT, it was watertight, comfortable and had a/c!! james Quote Link to post Share on other sites
Z320 Posted April 17 Report Share Posted April 17 SLK = Sportlich, Leicht, Kompakt not Kompressor Quote Link to post Share on other sites
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