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| bio | website | chiark.greenend.org.uk/~armb |
|---|---|---|
| location | Cambridge, UK | |
| age | 48 | |
| visits | member for | 2 years, 2 months |
| seen | yesterday | |
| stats | profile views | 5 |
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Apr 19 |
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Replacing thick wheels with thinner ones Those are unlikely to fit his existing rims: sheldonbrown.com/tire-sizing.html#width But since the question talks about replacing the wheels, not just the tyres, he can choose new wheels to suit. |
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Apr 19 |
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Replacing thick wheels with thinner ones You can certainly get 406 tyres narrower than 1.5, for example the Schwalbe Ultremo ZX 23-406. |
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Apr 18 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? That's why I pointed out "that's one particular phone compared with one particular dedicated GPS unit on one particular route". But buying a new iPhone 4S is a bit different from reusing the old Droid he already has. (I don't know how much an iPhone 4S costs in the US, but in the UK it's about £450 SIM free, which is more than a Garmin Edge 810.) On the other hand the Edge 510 does support GLONASS (the 810 doesn't), and wireless (Bluetooth) download of maps from your computer or phone. |
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Apr 17 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? The other big difference is that with a dedicated GPS you basically have to use the firmware and maps the manufacturer provides, your choice is take it or leave it. With a phone you have a choice of hundreds of apps for mapping, tracking your performance, sharing your rides socially, whatever. Of course if you don't want to spend time digging through hundreds of apps doing roughly what you want, reading reviews, trying out trial versions etc., to find the one that really works well for you, that's not much of a plus.... |
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Apr 17 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? See for example the maps with traces on bicycles.stackexchange.com/a/6143/1158. Now that's one particular phone compared with one particular dedicated GPS unit on one particular route, but I suspect that sort of difference is common. However, the question isn't "which is better", it's "I already have a phone, is it going to be good enough, or should I pay for a dedicated GPS as well". |
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Apr 17 |
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How much “play” is normal in a Sturmey Archer 3 speed hub? I wouldn't swear that much normal and not a sign of stuck pawls, but if it reliably does engage when you pedal forwards I expect it's okay. I'll see if I can find one and compare. Knowing it's an AW will lead you to hundreds of dismantling and servicing guides, I've never been that brave.... |
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Apr 16 |
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How to replace a Sturmey Archer's cable? I don't understand how "the adjusting part" can be on the cable. Usually it screws onto a bit you haven't shown that has a little chain then a rod that screws into the hub, and it's attached to a cable clamp: theoldbicycleshowroom.co.uk/… But yours doesn't look quite like that.... |
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Apr 16 |
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How much “play” is normal in a Sturmey Archer 3 speed hub? No letter codes? sheldonbrown.com/english-3.html#sturmey I think most of the SA two speeds were Duomatic, with a kickback gear change, but your GIF has a indicator rod and change, so it's not one of them. And a fair amount of lash/play before the pawls engage is usual. |
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Apr 16 |
answered | 7 speed front Derailleur on 9 speed crankset |
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Apr 15 |
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Why do I always get punctures in my rear wheel? sheldonbrown.com/brandt/rear-flats.html |
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Apr 15 |
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What factors influence the maximum tire pressure other than the tire itself? re "tube is pinched under the rim" - or sticking through a damaged tyre: guardian.co.uk/environment/ethicallivingblog/2009/aug/06/… "I eventually tracked down the cause: a large gash in my rear tyre; the legacy of a large chunk of glass the previous summer. With my tyres down at around 40psi, the tear wasn't even noticeable but at 80psi, the inner tube was forcing its way through the gap and getting pinched, causing my punctures." |
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Apr 15 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? External battery packs make it harder to fit it neatly in a waterproof case though, or force you to take it out while you connect it to recharge the internal battery. That might not matter though, depending on where/when you ride. (On the other hand if you get something like a Satmap 10, the ability to run on standard AA cells as an option can be useful.) |
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Apr 15 |
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What factors influence the maximum tire pressure other than the tire itself? Also see bicycles.stackexchange.com/questions/10843/… |
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Apr 15 |
answered | What factors influence the maximum tire pressure other than the tire itself? |
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Apr 14 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? There are ways around the battery life issue for e.g. multi-day touring when even a dedicated GPS might not last, if necessary: bicycles.stackexchange.com/questions/13144/… bicycles.stackexchange.com/questions/9155/… But a GPS with better battery life might be cheaper than getting a setup like that for a phone. On the other hand, many people only do rides that a phone will last for. |
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Apr 14 |
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tyre size for a 28" bike, at the moment: 35C, is 32C too narrow? Do you mean "is 32C too narrow for my existing rim width", in which case which rims are you using, or "is 32C too narrow to be comfortable/avoid pinch flats on my road surface", in which case what sort of surface do you ride on? And how fast do you ride? The main advantage of narrow tyres is aerodynamic. |
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Apr 14 |
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Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? Thanks. I don't have direct experience of the Garmin screen. The resistive screen PDA with GPS I had before my smartphone worked even inside a waterproof case or with gloves, but not very well. Better than a capacitive screen though. |
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Apr 11 |
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Can I get smaller tires without changing my rims? "essentially any size" is a bit of an exaggeration: sheldonbrown.com/tire-sizing.html#width Also, all other things being equal, a fatter tyre has less rolling resistance. But (i) thinner tyres have less aerodynamic resistance which matters more to racers, and (ii) all other things aren't equal, because a narrow tyre can be run at a higher pressure with the same tyre construction. |
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Apr 11 |
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What does the label on a tire mean? As Sheldon explains, the "outer diameter" isn't the outer diameter of the actual tyre, it's the outer diameter of the nominal size tyre first (or typically) used on that rim at the time that size system was established. A 40-622 really is about 700mm, but a 20-622 racing tyre isn't. A fat 26" mountain bike tyre can have an actual diameter larger than a 27" or 28" tyre. (And 29" mountain bike tyres use the same rim diameter as one of the sizes known as 28".) |
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Apr 11 |
answered | Repurpose old android phone (without cell phone plan) as cycle computer with GPS tracking? |
