Woven brake linings and Cast Iron drums

[robgross1930]

Originally Posted by Synchro909

I can see why he might think that. When riveted linings wear down to the rivets, they leave grooves in the drum, so Yes.

It’s another story if rivets are allowed to rub the drum. What if they were made out of steel?

As for the brass wire content, without it, the lining would be weak.

Tell your friend to replace his woven lining with molded lining and when you go on tour make sure that your car stays behind his and don’t ride with him, especially at higher speed.

[Synchro909]

Originally Posted by robgross1930

It’s another story if rivets are allowed to rub the drum. Why? Brass rivet/brass wire. I know there are different grade of brass but....What if they were made out of steel? The drums or rivets made of steel? Tis thread is all about cast iron drums so I guess you are talking about steel rivets.

As for the brass wire content, without it, the lining would be weak.]True, but is it relevant?

Tell your friend to replace his woven lining with molded lining and when you go on tour make sure that your car stays behind his and don’t ride with him, especially at higher speed.I guess you are confirming that the woven linings create more friction. I don't think anybody disagrees with that but back to the purpose of the thread - do they scour the surface of a cast iron drum?

Please, let's stay on topic. woven linings on cast drums.

[robgross1930]

Originally Posted by Synchro909

Quote:
Originally Posted by robgross1930
It’s another story if rivets are allowed to rub the drum. Why? Brass rivet/brass wire. I know there are different grade of brass but....What if they were made out of steel? The drums or rivets made of steel? Tis thread is all about cast iron drums so I guess you are talking about steel rivets.

As for the brass wire content, without it, the lining would be weak.]True, but is it relevant?

Tell your friend to replace his woven lining with molded lining and when you go on tour make sure that your car stays behind his and don’t ride with him, especially at higher speed.I guess you are confirming that the woven linings create more friction. I don't think anybody disagrees with that but back to the purpose of the thread - do they scour the surface of a cast iron drum?

Please, let's stay on topic. woven linings on cast drums.

Well I've beat this horse enough. But one last time shouldn't hurt:

“Please, let's stay on topic. woven linings on cast drums.”

That’s what my post was about.

“Why? Brass rivet/brass wire.”

Take a look at the diameter of a brass rivet head and compare it to the diameter of a “fine” brass wire and you should readily understand.

“The drums or rivets made of steel? This thread is all about cast iron drums so I guess you are talking about steel rivets.”

Quite the contrary in the context of your remark. I was merely making a comparison of brass vs. the hardness of steel and figured you would be able to see that brass damage would not be all that severe by comparison.

As for the brass wire content, without it, the lining would be weak. "True, but is it relevant?"

Is it relevant? Absolutely. Without it, the lining would have a harder time standing the pressure.

“I guess you are confirming that the woven linings create more friction. I don't think anybody disagrees with that but back to the purpose of the thread - do they scour the surface of a cast iron drum?”

No, I’m confirming that a woven lining will provide a better brake on a mechanical brake system. A molded lining will give satisfactory results as well IF it is soft enough. Yes, there is no doubt that a woven lining with brass scours a cast iron drum or any drum for that matter and so does a molded lining. But the woven lining will not chew up the drum and destroy it in short order …. unless maybe the cast iron was extremely poor in which case it would be too weak to serve as a drum.

[Synchro909]

But the woven lining will not chew up the drum and destroy it in short order …. unless maybe the cast iron was extremely poor in which case it would be too weak to serve as a drum.[/FONT][/COLOR][/SIZE][/FONT][/QUOTE]

That is where Forever4's comment about different types of cast iron come into play. I was aware of what Forever said.
FWIW, the drums are from a US supplier and although I would have to ask him (if he knew), I would guess they are US made. One would hope they are the appropriate cast iron.
Tom, Your point is quite valid but I'm not sure it helps when we are looking at woven linings on cast iron.

I think I will suggest to my friend that if it is working well, leave it but keep an eye on it. Pull the drums every few thousand miles and check. Take appropriate action when/if damage is found.
Randy's response would still be worth hearing.