Originally posted by roo142
I have an old raliegh road bike that I am upgrading and replacing all of the old hardware. I want to replace the 7 gear cassette and get a newer 8 or 9 gear. I am getting new wheel sets. Are there any frame size width issue that are going to interfere?
Originally posted by roo142
Yep, It is 126mm. Are there any setups that will fit this width or am I kinda stuck with the 7
8 and 9 speed shimano casettes are interchangable on 8/9 speed shimano compatible hubs.Shimano 10 speed even works on shimano 8/9 hubs with a thin included spacer.Originally posted by nutbag
I plan on going to 9 speed when all my 8 speed levers die. When Shimano went to 9 speed, they moved to a narrower chain, so a 9 speed cassette is not the width of 8 old cogs plus 1, it's obviously narrower.
So what's the issue?Originally posted by nutbag
I've just read on www.bikeforums.net that the overall width of a 9 speed Shimano cassette is only 1mm wider than the old 8 speed, becasue the 9 speed stuff uses a narrower chain and cogs.
http://www.bikeforums.net/showthread.php?t=55763
(see message #3)
Sounds too good to be true, but I'm sure it would be easy enought ot find out.
Originally posted by boudreaux
So what's the issue?
If it's not 130 dropout spacing, and the frame is steel, it's not an issue.The frame can be spread, or the wider hub just dropped in and ridden.Originally posted by nutbag
I think he's concerned that a 9 speed cassette, or even an 8, would be too wide for his old Raleigh frame.
Originally posted by roo142
I have an old raliegh road bike that I am upgrading and replacing all of the old hardware. I want to replace the 7 gear cassette and get a newer 8 or 9 gear. I am getting new wheel sets. Are there any frame size width issue that are going to interfere?
Duno what the issue supposedly is with 753 but it doesn't have to be cold set.Just spread the stays and drop a 130 in.It's only 2mm per side.Originally posted by Mr_Potatohead
I just couldn't bear to part with a full Reynolds 753 team issue frame made in Nottingham just because it's 126mm spaced.
But cold setting 753 tubing is not advisable. So...
"
Originally posted by boudreaux
Duno what the issue supposedly is with 753 but it doesn't have to be cold set.Just spread the stays and drop a 130 in.It's only 2mm per side.
Originally posted by Mr_Potatohead
"when the wider hubs came into fashion, many riders tried to fit them. the problem they found was two fold. Either the SEATSTAY would buckle just below the bridge as the stays were opened wider, or the fit would look OK, and after a short while the CHAINSTAY would fail under fatigue near the BB shell due to the extra
stress put on it." [/B]
Originally posted by nutbag
Wow, I thought that was a myth -- you know, one of those things you here in bike shops but never ever see in your whole life
Still find it hard to believe,as there are plenty of other heattreated steels with the same characteristics.Spreading one enough to cold set it certainly involves alot more stress and bending than what's involved in just dropping in a 130 hub.Originally posted by Mr_Potatohead
Just to reiterate, the problem is only with 753 tubing. Because it has been hardened so much it is stronger, thinner, and less ductile than convential cro-mo tubing.
Originally posted by boudreaux
Still find it hard to believe,as there are plenty of other heattreated steels with the same characteristics.Spreading one enough to cold set it certainly involves alot more stress and bending than what's involved in just dropping in a 130 hub.
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