CityCyclingEdinburgh was launched on the 27th of October 2009 as "an experiment".
IT’S TRUE!
CCE is 14years old!
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RULES No personal insults. No swearing.
not resolved@sallyhinch, that can be a problem.
You want an inner tube that has the same number on it as the tyre. It can fall within the range so if you have a tube that goes 700 X 18-25 it obviously works on a tyre that is 23 or 25 (never seen a tyre that is 18)
And
If you have a tyre that is 700x 25-35 it will fit a tyre that is 25 or 28
However what would be useful but ypu do not get is 700 X 23-28
Or maybe you do if you look hard enough?
I find whenever I read anything on the Sheldon Brown site, I end up feeling more confused than when I started.
Fortunately the frankenwheel in question is almost worn out, so as soon as I can persuade the bike shop to replace it (he was reluctant at the last service as there was a few months more wear left in it - upselling doesn't really come naturally to Dumfries retailers) I shall start again with a back wheel that's the same width as the front one and tyres and inner tubes to fit. That will leave me with a redundant lightly worn slime inner tube which may be a price worth paying not to have a bike with one schraeder and one presta valve.
and that's before I even start trying to replace the tyre on my Brompton ...
@sallyhinch, breaking news on the Schroeder and presta valves.
It sounds now like the wheels might be different widths?
As long as there is clearance it is not a major deal?
You do need tubes that are the same size as the tyres. The tyres do need to fit the rims.
The slime is maybe going to be redundant.
Swaps shop it
a price worth paying not to have a bike with one schraeder and one presta valve
My trailer has a Schraeder tube and I did toy with the idea of changing one of the Presta bike tubes for a Woods for completeness.
700x18/28 tubes are definitely available (which would cover the needed 23 & 28) - I have 2 on my bike right now... Schwalbe I'm 99.9% sure
@gembo, yes - a bad decision made in a hurry several years ago has been biting me ever since.
If I have understood Sheldon Brown correctly, I may get away with a too-wide tyre on a too-narrow wheel as long as the brake pads don't rub the tyre. Actually, that's another can of worms as it turns out my back brakes had sprung out of alignment and one of the pads is now very crookedly worn. Fortunately I never cycle much above a sedate amble so I'll probably get away with it.
Yes as sheldon and others have said as long as no rubbing from pads or mudguards you can put bigger tyres on rims. I have a 23 mm tyre on front of bike I was on today and a 25 mm on back. Same rims. Prefer 25
Brake pads often crooked, or worn non-linearly.
Dems da breaks
This inspired last night's blog https://cityexile.wordpress.com/2017/08/27/there-once-was-a-bike-from-devizes/
Are there suspicious weld marks along some of the frame tubes? Any changes in paint colour? Was it bought from a dodgy geezer down the pub?
Starting to sound like you've actually halves from two separate bikes, joined together in unholy matrimony...
Based on my own experience, I would not use a 23-28 tube in 28 tyre except in an emergency. The tube gets extra stressed around the valve and can lead to early failure.
@Darkerside - no the bike is fine, it's just that a while back, for reasons that made sense at the time, it got a skinny replacement back wheel. I've been riding it like that for about 5 years without problems except when I need to sort out a puncture. But possibly I'm getting more punctures than I might have expected (even adjusted for the amount of blackthorn around here)
So, to recap: I can put slime in my inner tubes, as long as it is the right kind of slime and they are the right kind of inner tubes with removable valve cores and I'm careful when pumping them up and I don't mind Nazi mechanics shouting at me. They may or may not magically heal any punctures I get but things could get messy in an unspecified way afterwards.
That's candidate for CCE POTW if there was such a thing.
Update: slime-filled inner tubes are no match for a thorn big enough to go in one side of the inner tube and out the other.
This didn't happen in the dark with no lights while not riding off a cliff(e) into a burn, I hope?
No, but related! It was the reason why I was riding my Brompton in the dark, as the big bike was hors de combat with a puncture.
I've been using the Durano Plus' now for about 4 weeks with ZERO punctures,
also the kevlar strips i put in my Conti's on the road bike, 3x3 hour rides so far and no punctures -
i inspected all the tyres at the weekend and some minor cuts on the front of the duranos, no thorns or any other signs of anything on them - 1 deep cut on the rear of the Contis, about 4mm in length 2mm deep - off center though, its almost a brand new tyre too - but i think i'll keep going on that one.
The tyre in question was a Durano plus (I think) but it's a lot older than 4 weeks! To be fair it was one of the biggest thorns I've ever seen and even marathon pluses are not immune to thorns as I know to my cost.
While changing a tube last night I also dug an astonishing amount of wee sharps out of the tyre. Seems to be worse recently.
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