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14 tooth cromo bad boy cortesy of token - well glad i didn't go for 13 as 42-14 is hard work on the hills of yorkshire! much easier to spin on the downs compared to with a 16t - and the token cog looks fit being all drilled and shiny!
did i mention evans cycles are doing token lockrings (black) for £2.99 with free postage? Compared to £12.99 at chain reaction...
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31trum: rear sprocket will turn ~3 times for every turn of the front (assuming something similar to a 48 front, 16 rear), so you would expect it to wear out 3 times quicker.
Funny, i always thought that the sprocket will wear out quicker because at all times less teeth are in contact with the chain compared to the chainring. Thus the forces working on the sprockets teeth are bigger than in the front.
Somebody please correct me if i`m wrong. -
Yes, must admit, the same thought went through my head when I was walking to the station yesterday (strange the things you suddenly mull over when you're not on your bike).
Having said that, it does assume that the propulsive force is spread fairly evenly across all the sprocket or chainring teeth that are in contact with the chain, rather than the majority of the force being applied to one chainring tooth and one sprocket tooth (which, unless I am imagining this wrong, would happen if the chain spacing were marginally greater than the tooth spacing).
Been a long day, so ignore if I am being totally stupid / nonsensical.
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Tried out my geared bike this morn on way to work on 42-14 - thought i could push a bit more -it may be a struggle up the hills but it seriously sucks sticking to 23-24mph down hills on 42 16///
maybe should just go with the 14?
by sticking to - i mean spinning madly at
I've only just seen this. Not even 120rpm downhill.
Unless you've got some kind of physical disability, it's a fucking disgrace, and you should fit a freewheel.
Whereabouts in Yorkshire are you? I'm going to write to your fucking MP, you big girl's blouse.
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I've only just seen this. Not even 120rpm downhill.
Unless you've got some kind of physical disability, it's a fucking disgrace, and you should fit a freewheel.
Whereabouts in Yorkshire are you? I'm going to write to your fucking MP, you big girl's blouse.
I live in horsforth, and the hills aren't a 2-3% gradient, I'd like to see you spin at 120rpm down them, without ending up on your face...
as well considering that was my first week of riding a fixed why don't you chill the fuck out and go find a hill to ride in finsbury?
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Ha ha - fuck you ;)
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I live in horsforth, and the hills aren't a 2-3% gradient, I'd like to see you spin at 120rpm down them, without ending up on your face...
Haha.. you clearly don't know BMMF.
It'd be more like 220rpm and you wouldn't see his face because you'd be 5000m behind him.
You're new, he was just messing about, you will get faster leg speed and gain confidence as time passes and you become more comfortable fixed.
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as I mentioned - running 42 14 now and it's a whole different ball game - before i was constantly resisting , now most of the time can just spin . started with shitty plastic toe clips too - been using my spds and got some metal clips and straps en route.
i've got one thing to say - riding fixed is awesome - can't believe it took me so long to finally build a bike!
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I've got a 12t alu one for riding the rollers. Wouldn't bother with alu on the track. It won't last half the time.
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New sprocket - Alloy or cromo?
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@TM
Oh yeah....and Steel, because steel is real yo.....and it lasts longer....and if you're worried about the weight of your sprocket, you should shoot yourself in the head now forget about it.