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- Thread starter evozero
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torqueless
Senior Retro Guru
Re:
Yeah that should be the way it works. You only need one bolt. Obviously I cannot personally guarantee that the bolt is compatible with the 5800s and that the 5800s are compatible with your levers and have the right drop for your frame, having no personal experience of any of those components, although from your pics and measurements I cannot see any reason why not? But check with your suppliers!
Indeed, if the bolt 'does what it says...' it hardly matters whether you buy two front brakes or one front and one rear, although if you have the option it is probably best to get two front anyway, simply because a spare front bolt is more versatile than a spare rear bolt.
Yeah that should be the way it works. You only need one bolt. Obviously I cannot personally guarantee that the bolt is compatible with the 5800s and that the 5800s are compatible with your levers and have the right drop for your frame, having no personal experience of any of those components, although from your pics and measurements I cannot see any reason why not? But check with your suppliers!
Indeed, if the bolt 'does what it says...' it hardly matters whether you buy two front brakes or one front and one rear, although if you have the option it is probably best to get two front anyway, simply because a spare front bolt is more versatile than a spare rear bolt.
torqueless
Senior Retro Guru
Re:
Just bumping this to say that I consider this brake-reach measuring methodology from Sheldon to be a bit rough 'n' ready, although probably close enough for practical purposes. As far as I'm concerned, brake reach is measured as the vertical distance between two horizontals: One passing through the centre of the pivot bolt (or anchor bolt for centre-pulls), and the other passing through the centres of the brake-block bolts.
They will "work", but they will almost certainly feel terrible. Either very wooden or very spongey. But it's not a combination i've tried. Or would want to try.
Since the launch of SLR brakes shimano have been playing more and more with variable rate cable pulls and then onto dual pivots and so on. So they are getting less tolerant of mix and match.
Since the launch of SLR brakes shimano have been playing more and more with variable rate cable pulls and then onto dual pivots and so on. So they are getting less tolerant of mix and match.
torqueless
Senior Retro Guru
Re:
Jesus... I suppose this is only to be expected from a manufacturer with a sideline(?) in fishing reels..
So what would happen if Evozero connected these 5800s to his existing levers?
Is it A) He barely needs to think about applying his brakes- pulling the levers half a millimetre sends the pads rocketing towards the rim at high velocity? Or B) Pulling his levers all the way back to the bars at high velocity barely induces the pads to sluggishly creep half a millimetre towards his rims?
Evozero, presumably 'the bolt' linked upthread would allow you to watch the classifieds for an older, saner pair of Shimano dual pivots that will be compatible with your levers (if any exist- don't ask me) and fit them to your frame without having to take a drill to it..
Jesus... I suppose this is only to be expected from a manufacturer with a sideline(?) in fishing reels..
So what would happen if Evozero connected these 5800s to his existing levers?
Is it A) He barely needs to think about applying his brakes- pulling the levers half a millimetre sends the pads rocketing towards the rim at high velocity? Or B) Pulling his levers all the way back to the bars at high velocity barely induces the pads to sluggishly creep half a millimetre towards his rims?
Evozero, presumably 'the bolt' linked upthread would allow you to watch the classifieds for an older, saner pair of Shimano dual pivots that will be compatible with your levers (if any exist- don't ask me) and fit them to your frame without having to take a drill to it..
Re: Re:
The bolt has arrived, very quick delivery from SPA cycles.
Please let me know what you think ASAP, I have found some 5700's for sale.
Should I cancel the 5800's in favour of the 5700's or forget fitting modern calipers altogether?
Cheers,
Ian
torqueless":3qg4zb9v said:
The bolt has arrived, very quick delivery from SPA cycles.
Please let me know what you think ASAP, I have found some 5700's for sale.
Should I cancel the 5800's in favour of the 5700's or forget fitting modern calipers altogether?
Cheers,
Ian
I've no idea if it's scenario A or B, all i do know is that the x800 series brakes are different from the x700, shimano say they don't work together, users say they do, but not amazingly well (matched shimano road brakes/levers are good, really really good). But to complicate things everything going back through time with dual pivot is the same. Single pivot SLR brakes are different again. Then the "old school" brakes (Golden arrow etc) are again, a different standard.
As i said, good pads and new (modern) cables would be as good a start as any. The old cables were utterly dire compared to the current shimano compressionless.
As i said, good pads and new (modern) cables would be as good a start as any. The old cables were utterly dire compared to the current shimano compressionless.
torqueless
Senior Retro Guru
Re:
I would cancel the 5800 order.
Who would have guessed that friction braking could get so complicated? Forty years back you could have got two different brakes from two different manufacturers, connected them to two different levers from two other different manufacturers, and the whole thing would have worked flawlessly.
The brakes on my bike are made up of parts from maybe six different manufacturers all told. I've never had any problem slowing down or stopping yet.
I would cancel the 5800 order.
Who would have guessed that friction braking could get so complicated? Forty years back you could have got two different brakes from two different manufacturers, connected them to two different levers from two other different manufacturers, and the whole thing would have worked flawlessly.
The brakes on my bike are made up of parts from maybe six different manufacturers all told. I've never had any problem slowing down or stopping yet.
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