mk one":28qq6jkh said:
Nice, i think black cranks will work, be interesting to see what the Cooks look like on, i will keep an eye out for a bb for you. And that's a nice looking wheelset too.
What is the deal with the rear cable stop? is that original and why does it need to bolt on/off?
Thanks Mark.
The wheelset is such a nice feature of the original spec. A massive thank you to Retrorider_IT again for selling these to me..... and I get to keep my other set for the Klein. Fortunately they also came with the 143mm rear axle that allows you to run the 135mm rear spacing.
The Cooks cranks have been more of a hassle - I'll detail this below. :facepalm:
The rear cable stop (and cantilever mounts) are all held on with Allen bolts. I think this is because the cast aluminium lugs would have been too difficult to release from the mould if they were made with those parts attached? - perhaps it gives more space to bond the carbon to the lugs and add them afterwards?
Either way, it's a neat solution and the seat stays and Chain stays have loads of tyre clearance.
It's that same tyre clearance on the chainstays which has lead to my next problem...
Installing the Cooks cranks.
Currently, the set up is running Deore DX cranks with a 127.5mm UN54 bottom bracket. This leaves about 8mm of clearance to the chain stay. Not a problem, but slightly big on the gap. I decide instead to purchase a 122.5mm UN54 and run that to close the gap and reduce the risk of chain suck.... which has obviously been an issue previously judging by the damage in that area.
Runs well, but decide those Cook's Cranks would look ace and want to give them a try.
Bottom bracket must be the same as the Deore DX ones run right?
No. :facepalm:
i) 122.5mm bottom bracket doesn't work.
ii) Decide to re install 127.5mm bottom bracket..... that doesn't work either.
iii) Look for 132mm Sealed Type bottom bracket, Shimano/Suntour/Similar. Nothing available.
iv) Spot a Stronglight 134mm Cup and Axle type bottom bracket on eBay and purchase. Item coming from Poland so expect slightly longer on postage.
v) Busy few weeks at work mean although I've now got the Bottom bracket, I don't get to try fitting it until the weekend.
vi) Install. Bugger. :facepalm: 134mm still isn't long enough!
vii) Purchase 140mm Campagnolo axle from US. :facepalm: :facepalm:
Am I doing something wrong or do Cooks cranks take a ridiculously long axle? - 140mm is more than the axle spacing on the rear!!
Is it just one of those things that Trek specced something really weird on their Carbon bikes?
The massive tyre clearance on the chainstay is the main cause but didn't the 1990 model year 8900 Composite also come with Matrix/Cooks as original spec?
Is there something different between earlier and later Cooks cranks other than arm profiles?
I'm sure an expert would know. :roll:
retrobikeguy":28qq6jkh said:
boy"O"boy":28qq6jkh said:
Cheers RGB.
With that TEAM YORK CYCLEWORKS on the rear stays, I'm sure I've seen a similar large frame in an MBUK/ MBi article? It was about small independent innovators- Pete Tomkins rings a bell?
Thats the one, they had it for sale outside the front of the shop for a while when it was retired, didnt even clean it
Still looking for the article! - Will scan it once I find it!
Here's some pics showing clearances with Cooks and Stronglight vs Deore DX and UN54 122.5mm
Cheers.
boy"O"boy
