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Fórum Cycling UK Forum

forum.cyclinguk.org

Fórum phpBB em inglês. 12 seções acompanhadas: ↳ Does anyone know … ?, Touring & Expedition, ↳ Lands End to John O'Groats, ↳ Women's cycling interests, Cycling, ↳ Helmets & helmet discussion, ↳ Cycle Camping sub-forum, ↳ Health and fitness, ↳ Bikes & Bits – Technical section, ↳ Family Cycling, ↳ Campaigning & Public Policy e ↳ On the road.

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Bikes & Bits – Technical section
Square Taper BB

I was going to say TAKE THE WASHER OUT FIRST! You take all the fun out of bike repair. Next time at Halfords, could get me liter of indicator fluid ?

Electrically assisted pedal cycles
Safety Stuff

I have a friend (PhD and qualified doctor) who boasted about a Samsung mobile clone he bought. He said it came from the same factory, but without the branding - hence the low price. About a month later, he charged it, put it in a drawer in his living room, and shortly after it ignited. My first laptop was a Samsung, back in the days when you could unplug the batteries and change them. The kosher Samsung replacements that I used where thick end of £100, compared to cheapies off Amazon at around £16-£20.

On the road
"Illegal e-bikes"

Finally the BBC have published an article about illegal electric motorbikes and the explanation that "e-bike" refers to an EAPC rather than causing confusion and referring to both legal and illegal electric powered two wheel vehicles with the same term. They also explain the legal e-bikes can be made illegal by the use of aftermarket modifications. See https://www.bbc.co.uk/news/articles/cmdx0jzzpd89o .

Electrically assisted pedal cycles
Safety Stuff

My charging regime after 5 years of doing so: > I am not in attendance during charging and use the mains timer I mentioned above to cut off charging power if the fully charged state occurs after bedtime > I charge to 100% after using at least 10% of overall capacity > I do this for a couple of reasons - firstly because the last phase of charging to 100% is when the BMS carries out cell balancing and secondly I want to be ready for the next ride at the drop of a hat > I'm happy to leave the charging unattended because: (1) I know my charger is from a reputable source and has internal control systems to regulate the output voltage and current and to me, represents no bigger fire risk than the many other mains powered devices around the house (2) In the event of the charger not charging correctly, the battery BMS has over voltage and over current protection circuits to shut off charging if necessary. Further, the BMS also has a temperature sensor to also cut off the charging in the event of over-heat. (3) The are two separate independant fuses in the charging path - one for the coulomb meter I use to measure consumption and another inside the battery, in-line in the charge/discharge circuit. I'm happy to say that none of the above fault scenarios has occurred so I've not been able to 'prove' that the fault prevention systems described function as expected, but one has to have faith somewhere along the line as one might never leave the house otherwise. I never charge unattended o

Bikes & Bits – Technical section
New Model Buffalo Bike With 2 Chains

This is the first time I've heard SRAM mentioned in connection with WBR so I don't think they're doing it as a publicity stunt. There are also charities shipping containerfuls of "old roadsters" (and hybrids, 90s mtbs - rigids with thumbies, anything simple and robust) to various parts of Africa and distributing them to those in need. Some might overhaul them locally before distribution, some might do that in the West.

Electrically assisted pedal cycles
Safety Stuff

... The thing about the battery fire reports is that the reason for them is never reported on, a bit difficult of course seeing as all evidence has burnt away. I've yet to see reports of battery fires from the bespoke ebike stuff from the likes of Bosch etc al. ... We do have some relevant evidence, eg: https://www.gov.uk/government/publicati ... oters-2024 Jonathan

Bikes & Bits – Technical section
Steerer Tube

Thanks, Slowster. The spec sheet online shows 1087mm for the size 56. I've just measured mine at 1097 or 1098, so 10 or 11mm longer! Now that I've looked properly at the bottom of the head tube and fork interface, it's clear that the gap is wider at the rear, so I'm afraid the fork steerer tube must be bent. I've sent a query to Whyte too. I'm hoping they will honour the warranty, because the fork must be quite rare, as the Winchelsea only sold for 3 years, from 2019 to 2021, and the fork has a very large tyre clearance of 74mm. The standard tyres are 650B X 47mm. I'm wondering if there is a similar fork that would work, if Whyte don't have a replacement anymore. Ho hum, I don't need this hassle... Stroudy

Bikes & Bits – Technical section
New Model Buffalo Bike With 2 Chains

It's a bad thing because of the overheads and transport. What's needed is something that can be produced indigenously and isn't a PR stunt for SRAM. By all means, call me cynical if you like. Even if genuinely well intentioned, it's unlikely to make any difference at scale.

Bikes & Bits – Technical section
Steerer Tube

I suggest you measure the wheelbase and compare that with the published measurements, e.g. here - https://www.leisurelakesbikes.com/bikes ... ey__326170

Bikes & Bits – Technical section
New Model Buffalo Bike With 2 Chains

They might be assembled locally, but aren't they manufactured by Giant? That's hardly what I meant by a local supply chain. When the only info is from the charity itself plus bits of editorial in the cycling press, I'll take it with a pinch of salt. Half the bikes in the world are made in the same couple of factories in the Far East so that's hardly a bad thing. WBR just brings together a load of separate suppliers. SRAM for example make the freewheel and essentially give it away. The bikes are assembled by local workers at various locations in Africa and Asia depending on where they're being used.

Bikes & Bits – Technical section
New Model Buffalo Bike With 2 Chains

They might be assembled locally, but aren't they manufactured by Giant? That's hardly what I meant by a local supply chain. When the only info is from the charity itself plus bits of editorial in the cycling press, I'll take it with a pinch of salt.

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