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Building a Cyclo Cross bike


Meerkat82

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Posted

I am still trying to figure out which rims work better, mtb rims running tubeless or wider type road clincher rims converted to tubeless? Is it possible to use lower psi on road rims with tubeless conversion?

Posted

Will Mavic Krysium Equip S wheels work for CX?

Should do as long as your rear spacing is correct for that hub width and you are running canti's

Posted

I built up a beautiful Swiss Cross a few years ago and found it the ideal early morning training road bike and commuter as it removed the stresses of trying to negotiate the crumbling paving of the Jo'burg northern suburbs. It was also great for the Spruit and my personal records for the climbs up the treeline in Delta and the climb up to Alberts were both done on it. As was the climb up Breedts from the south.

 

BUT, I was not perfectly, entirely, 100% happy.

 

First, the gearing. I was running a compact road crank with a road derailleur and a 12-25 cassette. Doing the Hunter Cycles CX Sundays or going up the Swartberg pass I ran out of gears. I wanted to do Karoo2coast on it but felt that I could nor get the gearing right. I needed more going uphill.

 

Second, braking. I loved the Paul canti brakes but at 98kg I encountered significant brake shudder when engaging the front brake aggressively on steep sections. Nothing I could do about it except lose 25 kg to reduce the stresses.

 

Third, when doing rutted and bumpy downhills, the road derailleur was not up to the task of maintaining chain tension and eliminating chain slap.

 

So, when I received a call out of the blue last year I sold the bike and sort of put the cash aside for "one day".

 

I decided that if I ever built a CX bike again, I'd run a SRAM drive train. SRAM use the same pull ratio between their road and MTB group sets so I could run a MTB RD with road shifters. I decided to go 10 speed as 11 was the latest and greatest and priced accordingly. I gradually bought a 10 speed X0 derailleur and some Red shifters on the hub from people who had upgraded.

 

I found a 10 speed SRAM compact crank online on a clear-out sale. Ditto a FD. I had a 10 speed chain and a 29er wheel set I could chuck in.

 

I decided that if I had a CX bike, I would not need a geared HT mtb, so resolved to sell off my Ritchey P29er frame and apply the proceeds to this build. This provided some additional cash and also a stem, seat post and saddle that would do the job. I flogged the XT group set.

 

I blew a bundle on some Hope V-twin cable to hydraulic converters as I missed getting the TRP ones being sold on TheHub, but was still under budget.

 

Then I sought out a frame and impulsively and sentimentally decided to get a Ritchey again.

 

Three months later I had my first ride on Sunday, and have had one on Monday, Tuesday and again today.

 

Only one thing remains. A visit to Bogus as I still have budget and want a red bike again.........

Posted

Should do as long as your rear spacing is correct for that hub width and you are running canti's

No worries with the hub width. Steel frame. 135mm and road fits.

Posted

I built up a beautiful Swiss Cross a few years ago and found it the ideal early morning training road bike and commuter as it removed the stresses of trying to negotiate the crumbling paving of the Jo'burg northern suburbs. It was also great for the Spruit and my personal records for the climbs up the treeline in Delta and the climb up to Alberts were both done on it. As was the climb up Breedts from the south.

 

BUT, I was not perfectly, entirely, 100% happy.

 

First, the gearing. I was running a compact road crank with a road derailleur and a 12-25 cassette. Doing the Hunter Cycles CX Sundays or going up the Swartberg pass I ran out of gears. I wanted to do Karoo2coast on it but felt that I could nor get the gearing right. I needed more going uphill.

 

Second, braking. I loved the Paul canti brakes but at 98kg I encountered significant brake shudder when engaging the front brake aggressively on steep sections. Nothing I could do about it except lose 25 kg to reduce the stresses.

 

Third, when doing rutted and bumpy downhills, the road derailleur was not up to the task of maintaining chain tension and eliminating chain slap.

 

So, when I received a call out of the blue last year I sold the bike and sort of put the cash aside for "one day".

 

I decided that if I ever built a CX bike again, I'd run a SRAM drive train. SRAM use the same pull ratio between their road and MTB group sets so I could run a MTB RD with road shifters. I decided to go 10 speed as 11 was the latest and greatest and priced accordingly. I gradually bought a 10 speed X0 derailleur and some Red shifters on the hub from people who had upgraded.

 

I found a 10 speed SRAM compact crank online on a clear-out sale. Ditto a FD. I had a 10 speed chain and a 29er wheel set I could chuck in.

 

I decided that if I had a CX bike, I would not need a geared HT mtb, so resolved to sell off my Ritchey P29er frame and apply the proceeds to this build. This provided some additional cash and also a stem, seat post and saddle that would do the job. I flogged the XT group set.

 

I blew a bundle on some Hope V-twin cable to hydraulic converters as I missed getting the TRP ones being sold on TheHub, but was still under budget.

 

Then I sought out a frame and impulsively and sentimentally decided to get a Ritchey again.

 

Three months later I had my first ride on Sunday, and have had one on Monday, Tuesday and again today.

 

Only one thing remains. A visit to Bogus as I still have budget and want a red bike again.........

Pictures of said bike, or we will all say it's a figment of you imagination [emoji12]
Posted

 

I blew a bundle on some Hope V-twin cable to hydraulic converters as I missed getting the TRP ones being sold on TheHub, but was still under budget.

 

..

You could have talked nicely to your mate who has the TRP one's in a box in his study... he would have listened.....

Posted

You could have talked nicely to your mate who has the TRP one's in a box in his study... he would have listened.....

Now you tell me.....

 

At least a new bike has got me riding again.

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