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suparich



Joined: 16 Feb 2009
Posts: 5

PostPosted: Mon Feb 16, 2009 1:14 pm    Post subject: old school new cool Reply with quote

Hi, Please help.

I need to upgrade my old Cannondale mountain bike and I'm at a bit of a loss as to which new parts still fit.

The frame 1989.
Kitted out with 1990 Shimano Deore XT.

I need to replace the worn bottom bracket, chain set, rear cassette and derailleur.

questions...

1. I'm assuming that I have to replace the cassette with a seven speed block; my XT hubs most probably can't take nine speed?

2. Bottom bracket - Hollowtech. Do I need new tools to fit this or should I get a shop to do it? Any axle issues?

3. Which chain set can I use? XT looks like it's been upgraded out of my old bike's league.

thanks.
r
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tomlevell



Joined: 13 Apr 2008
Posts: 989

PostPosted: Mon Feb 16, 2009 1:53 pm    Post subject: Reply with quote

The frame 1989.

Blimey and it hasn't snapped yet!

1. I'm assuming that I have to replace the cassette with a seven speed block; my XT hubs most probably can't take nine speed?

IIRC the change to 8 speed (and then 9 speed) meant new hubs so you will have to get a 7 speed hyperglide cassette.

2. Bottom bracket - Hollowtech. Do I need new tools to fit this or should I get a shop to do it? Any axle issues?

You should be able to change the BB itself. Easiest thing is to get it out (although that might not be easy if it's been in since 1990) and measure the width of it or read off the numbers on the body of the BB. You'll then a shimano square taper in that size.

3. Which chain set can I use? XT looks like it's been upgraded out of my old bike's league.

You can still buy chainrings to suit the old size bolt circle. You may have to buy the more boutique brands such as Middleburn but it's going to be cheaper than a new chainset.

Option 4 - Go to retrobike and sell it. There will no doubt be a few Cannondale nuts on there.
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suparich



Joined: 16 Feb 2009
Posts: 5

PostPosted: Mon Feb 16, 2009 2:29 pm    Post subject: Reply with quote

whats retro bike?
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mr-marty-martin



Joined: 30 Jun 2008
Posts: 3778

PostPosted: Mon Feb 16, 2009 2:30 pm    Post subject: Reply with quote

type it in on google, its a website
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suparich



Joined: 16 Feb 2009
Posts: 5

PostPosted: Mon Feb 16, 2009 2:42 pm    Post subject: Reply with quote

I'd rather not sell it, unless it was for silly money, I've kept it going for so long.

The crank arm thread is striped, both sides, so I probably do need a new chain set.

Do any shimano ones still fit?
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tomlevell



Joined: 13 Apr 2008
Posts: 989

PostPosted: Mon Feb 16, 2009 4:28 pm    Post subject: Reply with quote

You can still get square taper crank sets from the online retailers but the BB lengths required changed in the early ninties when they went low profile.

Pretty much anything should fit. I assume the BB shell width is one of the standard sizes. 68 or 72mm
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suparich



Joined: 16 Feb 2009
Posts: 5

PostPosted: Mon Feb 16, 2009 4:36 pm    Post subject: Reply with quote

so can I buy a Hollowtech chainset / bottom bracket and fit it myself??
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tomlevell



Joined: 13 Apr 2008
Posts: 989

PostPosted: Mon Feb 16, 2009 4:43 pm    Post subject: Reply with quote

They should fit but not knowing enough about that age Cannondale you could fall foul of the cranks hitting the chainstays as they might be wider than is standard now.
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suparich



Joined: 16 Feb 2009
Posts: 5

PostPosted: Mon Feb 16, 2009 4:47 pm    Post subject: Reply with quote

well, it's a sm1000 i think? 1989. just before they introduced the replaceable hangers.
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Steve Kish



Joined: 06 Jan 2009
Posts: 8029
Location: Near Heathrow

PostPosted: Mon Feb 16, 2009 6:16 pm    Post subject: Reply with quote

Keep it!! Retro is so totally 'now and happening'! Razz

I use J D Whisker of Goff's Oak, as they still have loads of NOS bike bits. Find them on the net.
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