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-   -   Cables retaining their shape (https://www.bikeforums.net/classic-vintage/1159105-cables-retaining-their-shape.html)

Andy_K 10-30-18 01:48 AM

Cables retaining their shape
 
From the "it's late and I should get some sleep, but I was just tinkering in the garage and wondered about this" files...

I just pulled the old cables from a 1969 Raleigh Competition. They did this.

https://farm2.staticflickr.com/1952/...88249fe5_c.jpg

Have you seen that? Yeah, I know steel likes to keep its shape, but that's some serious persistence even if the previous owner replaced the cables before flipping the bike.

Also, have you ever seen Brompton-branded handlebars on a non-folding bike? Maybe it's just an oddly chosen sticker, but it was under the bar tape.

https://farm2.staticflickr.com/1945/...66941a1a_z.jpg

randyjawa 10-30-18 01:59 AM

Seen it a couple of times and do you know what causes it?

When you pull the transmission cable through the shifters, allowing the cable to go around the curve of the shifter, as you pull, then the cable will be warped every time. To avoid, make sure that you are pulling the cable through a hole ONLY. Do not allow the cable to pull through the hole and around the shifter barrel.

Can't offer any information about the bars, though.

dabac 10-30-18 05:04 AM


Originally Posted by randyjawa (Post 20639943)
Seen it a couple of times and do you know what causes it?

When you pull the transmission cable through the shifters, allowing the cable to go around the curve of the shifter, as you pull, then the cable will be warped every time. To avoid, make sure that you are pulling the cable through a hole ONLY. Do not allow the cable to pull through the hole and around the shifter barrel.

+1

It's similar to the action that's used to curl parcel ribbons.

big chainring 10-30-18 05:35 AM

Brampton with an "a". English components from the golden era of bikes.

Andy_K 10-30-18 09:12 AM


Originally Posted by randyjawa (Post 20639943)
Seen it a couple of times and do you know what causes it?

When you pull the transmission cable through the shifters, allowing the cable to go around the curve of the shifter, as you pull, then the cable will be warped every time. To avoid, make sure that you are pulling the cable through a hole ONLY. Do not allow the cable to pull through the hole and around the shifter barrel.

So you're saying this happened as I was removing the cables? That's odd. I had no intention of reusing the cables, so it's no big deal. I had just never seen this before.

Andy_K 10-30-18 09:14 AM


Originally Posted by big chainring (Post 20640015)
Brampton with an "a". English components from the golden era of bikes.

Thanks! That makes more sense. I had never heard of them.

noglider 10-30-18 10:38 AM

There were also Brampton 3-speed hubs, similar to Sturmey Archer.

fietsbob 10-30-18 11:29 AM

I like the christmas package ribbon analogy..
 
Wire was coiled on a big spool at the cable mill .. coiled again for packaging , to sell in the store..
[FWIW, just uncoiled a new 1, it laid flat ]

The bulk reels are a bigger diameter ...




..

Chombi1 10-30-18 12:27 PM

Uhmmm.......If they are long enough and rust free, that would not stop me from reusing them.....
especially as older brakesets have move stiffer springs on their calipers, compared to modern ones so you might not even notice the difference at the levers....
I bet you can hang them and run them through your fingers while pulling down a few times to "massage" out most of the coiling out of them....

gugie 10-30-18 12:31 PM


Originally Posted by Andy_K (Post 20640310)
Thanks! That makes more sense. I had never heard of them.

​​​

"Made in Bramptan, England"

Everyone wants to correct my wool Carlton jersey. Clearly I meant "Works(h)op"?

Ah, the English. Leicaster is pronounced Lester. All those extra letters hanging on for the ride.

Andy_K 10-30-18 01:29 PM


Originally Posted by Chombi1 (Post 20640642)
Uhmmm.......If they are long enough and rust free, that would not stop me from reusing them.....
especially as older brakesets have move stiffer springs on their calipers, compared to modern ones so you might not even notice the difference at the levers....
I bet you can hang them and run them through your fingers while pulling down a few times to "massage" out most of the coiling out of them....

They're shift cables and feel a bit sticky. I'm willing to splurge for new cables. The short one with the more orderly coil will make a nice garage shelf decoration.

Andy_K 10-30-18 01:38 PM


Originally Posted by gugie (Post 20640650)
​​​"Made in Bramptan, England"

Everyone wants to correct my wool Carlton jersey. Clearly I meant "Works(h)op"?

Ah, the English. Leicaster is pronounced Lester. All those extra letters hanging on for the ride.

Brampton, Bramptan? I seem to recall being taught that a cursive 'o' exits at the top of the letter, but apparently the folks in Brampton thought the main difference was that an 'a' is slightly wider.

Also...

https://pics.me.me/i-dont-know-how-t...e-19581339.png

nlerner 10-30-18 02:53 PM

I suspect those cables are trying to twist themselves into a message of some sort. You need to be able to read cursive, however, to understand.


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