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• #3852
Getting up Canonbie is impressive.
I'll bet the motor was a little bit warm after that. -
• #3853
I reckon 6 speed for the climbing and for the high speed (15.5mph) low cadence cruising. 2 speed will be hard work without assist.
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• #3854
The 6 speed does sound like a bit of a faff though, having to alternate two levers to go up and down gears, not sure I want to have anything extra taking my attention from the maniac drivers while commuting.
Found the 2 speed to be a bit spinny, I think they only offer the choice to go down and not up on the gearing of the 2 speed.I'd like to know more of the tech specs around the difference between the power modes on the electric, I honestly couldn't tell that much difference between the three.
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• #3855
Using the shifters becomes automatic after a short while, but you don't tend to go up through the gears; when I've borrowed one I mostly use it like a 3-speed with the option for fine-tuning.
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• #3856
Yeah, this. Building up to speed I tend to use "2nd", then "4th", then flick the rear derailleur into "5th". Just have to flick the shifter back onto the smaller sprocket when slowing down to stop.
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• #3858
Seems to be some more press coming out about the electric, wonder if that means the release is soon...
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• #3859
No review of the Tern Vektron though, which although much heavier, is a fantastic machine and a proper hoot.
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• #3860
These look interesting too....
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• #3861
Is this guy on here? He's quick!
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• #3864
Pop me a PM mate!
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• #3865
About to do the first chain replacement, how do I know the correct chain length without having to count the links one by one? 2nd hand 6 speed bike, is it possible to know if the gearing is "reduced" by just looking at the teeth number on the chainring? If so what is standard and reduced?
Apologies for the noob question... :D
Any tricks @edscoble? -
• #3866
Can you count to 100?
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• #3867
Get a box of toothpicks / matches and pop one into the chain every 10 links.
No need to count to 100. -
• #3868
Measure the new chain against the old one.
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• #3869
can but surely there is a faster way
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• #3870
more practical but still fairly slow method, isn't there a way to know the chain length byjust looking at number of gears and chainring teeth? like http://blog.brilliantbikes.co.uk/2015/02/brompton-chain-sizing-guide.html
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• #3871
Without stating the obvs. is it worth pointing out that you are not looking at replicating chain length - but are looking at replicating the correct number of links?
On a well-worn chain, the same number of links can be over an inch (or more) in overall chain length.
Sorry. You need to count the links.
If you know of another method, I'd be delighted to hear of it. -
• #3872
44t chainring should be 98, 50t 100 and 54t 102 iirc.
Brompton use Sram 8 speed chains.
edit: Brompton make it easy for you.
https://brompton.zendesk.com/hc/en-us/articles/203295641-What-chain-size-and-length-do-I-need-
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• #3874
'Splain.
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• #3875
It's an age old debate 'on here' about whether chains wear or stretch.
Popped down to Compton Cycles in Catford this afternoon to have a go on their 2 speed electric Brompton.
Very fun; took it out for about 5 miles and went along to the Horniman taking as many hills as I could on the way. Even managed to haul myself up Canonbie which was a surprise, still had to out some effort in for that but not too bad.
The power of the assist it puts out feels much the same as the Gocycle (no throttle boost tho).
The option of riding it sans battery does appeal, which would make the 6 speed the better choice perhaps, not sure...