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 Post subject: Hope C2 hose choice
PostPosted: Mon Aug 06, 2012 5:06 pm 
Gold Trader / MacRetro rider
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Joined: Sun May 25, 2008 11:03 am
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Location: Sunny Glasgow
Does the size of the hose matter and would changing to a 5mm one cause any changes :?
Does it increase the force any?

Discussion needed :D


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 Post subject:
PostPosted: Mon Aug 06, 2012 5:54 pm 
Gold Trader / rb Rider / Special
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The inner diameter is the same isnt it? (if so = no change).
And even if it was bigger or smaller i think it depends on the master cylinder and how much fluid it moves, i.e it will still only move the same amount.
:?:


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 Post subject:
PostPosted: Mon Aug 06, 2012 8:03 pm 
Old School Grand Master
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No problems changing size, except you'll need new banjos too...


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 Post subject:
PostPosted: Mon Aug 06, 2012 11:51 pm 
Retro Guru

Joined: Fri Aug 26, 2005 9:41 am
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Location: bedfordshire
I need the 6mm hose for a frame that has eyelets machined for the bigger size, the smaller 5mm hose doesn't fit snug in the holes and slops about!
Does anyone have a lead as to where to source the 6mm hose?


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 Post subject:
PostPosted: Tue Aug 07, 2012 5:51 pm 
Gold Trader / rb Rider / Special
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http://www.rushcycles.co.uk/m2b7s331p2679/HOPE-6mm-Braided-Hose-Front-1mtr

And on ebay also i think.


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 Post subject:
PostPosted: Tue Aug 07, 2012 5:54 pm 
Gold Trader / MacRetro rider
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Actually i would have thought just the fact youve reduced the bore by a 1mm would increase the pressure :?


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 Post subject:
PostPosted: Tue Aug 07, 2012 6:35 pm 
Gold Trader / rb Rider / Special
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I always thought it was just the outer diameter that changed?


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 Post subject:
PostPosted: Tue Aug 07, 2012 10:08 pm 
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5mm hose is stiffer - that's why they changed to it.

I've run Minis and DH4s with both and they work fine.

Slightly less spongey feel with 5mm - to the extent that I sent the last of my spare 6mm hose to the chap who bought my M4s last week, I won't be using it again - as I'm not that much of a purist. Only running it on my RC200 with C2s to keep it original but performance is not the same as with 5mm.


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 Post subject:
PostPosted: Tue Aug 07, 2012 10:29 pm 
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dyna-ti wrote:
Actually i would have thought just the fact youve reduced the bore by a 1mm would increase the pressure :?

No... Same fluid in = same fluid out.


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 Post subject:
PostPosted: Tue Aug 07, 2012 10:35 pm 
Gold Trader / MacRetro rider
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suburbanreuben wrote:
dyna-ti wrote:
Actually i would have thought just the fact youve reduced the bore by a 1mm would increase the pressure :?

No... Same fluid in = same fluid out.


Indeed but to increase the pressure of any liquid passing through a tube is you decrease the inner diameter.
plus you increase the speed of passage :?


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