(PhysOrg.com) -- Anyone who has ever stepped barefoot onto blacktop pavement on a hot sunny day knows the phenomenon very well: Black surfaces absorb the sun's heat very efficiently, producing a toe-scorching surface. In the wintertime, that can be a good thing: A dark roof heats up in the sun and h...
The article is from 2009. It presents new roof tiles that become black in winter in order absorb heat from the sun, and white in summer to reflect it. I still can't buy these as far as I'm aware. What happened to that? They do write > Savings from the black state in winter have yet to be quantified.
So maybe it turned out that it wasn't worth it compared to tiles that are white year round?
I either don't get what you're saying or didn't explain the brake cable structure of the bike well enough. It looks like this:
brake lever---housed cable---transition to unhoused via cable stop---unhoused cable---transition to housed via another cable stop---brake itself, more transitions there but that doesn't matter here
At each transition between housed and unhoused, I need one of these pieces (or something similar), but since I lost one of them, I only have one.
But as the other replies all suggested full housing instead of bothering with this ferrule thing, I think I'll just try that.
It's a no-name bike from the 2000s, Wheeler Pro 39. Thanks for your input, I'll try full housing first as that seems the most straightforward.
Thank you, I'll do just that and see how I fare with full housing 👍
[I'm not allowed to post images because my account is too new, so those imgur links will have to do...]
While dragging my bike through some bushes, the exposed section of its rear brake cable running along the top tube got snagged in a branch and I ended up losing the small plastic piece that goes over the housing to turn the frame's cable guide (?) into a cable housing stop. I believe it's called a stepped ferrule or stepped housing end. Naturally, there is another such piece on the other end of the exposed cable, which I'm pretty sure is identical to the one I lost, so I can show you what it looked like:
https://imgur.com/a/ipdAwKB
My first question: What exactly is this called and where can I buy a replacement? Searching for "brake cable stepped ferrule", "brake cable stepped housing end", "brake cable stop" etc., I can find bits that look similar, but none that are an exact match.
My second question: Considering some bushes were enough to somehow dislodge or break one of these, I'm wondering how safe they are compared to alternatives like e.g. a fully housed brake cable or a different kind of ferrule (maybe made of metal):
That thin plastic step (see highlight in last pic of the album) has to withstand a lot of force and if it breaks the housing will just slide through the guide and the brake will fail.
The cable sliding out might also be a concern: I can see that rotating the ferrule gap to be opposite of the guide gap makes that unlikely and that even if they are aligned it's still unlikely due to the cable's tension opposing it, but I wonder if that's how I lost the other one.
Thanks in advance for any advice!