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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 11-04-13, 02:11 PM   #1
bobonker 
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First CX race -- are my tires ok for this course?

I'm riding a Cannondale CAADX with 700x35c Sammy Slicks.

It might be hard to judge from a video, but what do you guys think of those tires for this course (this is the race course):
http://www.bayareacx.com/page/show/2...nt-night-cross

Sammy Slick:


I don't see any mud or water, so I'm thinking that the Sammy tires might be adequate. To date, I've used my CX bike primarily as a way to do intervals on a flat/fast/bumpy hardpack 9 mile dirt loop near work. I run with 30 psi front and 40 psi rear (160 lb rider). I'm not sure if this is optimum from a speed perspective, but it sure works for comfort. I haven't had any trouble with mild amounts of loose over hardpack.

Thanks,
Bob
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Old 11-04-13, 11:41 PM   #2
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I've done that race, (though I am missing it this year) and it's pretty much fast bumpy hardpack. It has a few loose spots but probably not much different that what you have run already from the sounds of it. It should be pretty dry so run what ya brung and have fun!
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Old 11-05-13, 01:17 PM   #3
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Thanks for the info!

Bob
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Old 11-05-13, 08:01 PM   #4
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Those are just fine. Many guys run full file-treads (good ones) until it really gets to be peanut-butter mud. One of my juniors uses Clement LAS for nearly everything, and had no trouble in some muddy spots at the Ed Sander race last weekend, plus he was quite fast on the plain grass and road.

You just have to have file-treads with big side knobs. The LAS is good, and the new Challenge Chicane looks to be good as well.
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Old 11-07-13, 08:20 AM   #5
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I've been running the Clement LAS tires for the dry courses in the Sac CX and Reno Sagebrush CX races so far this season. They are similar to your tires. I'm a little heavier (200 lbs ugh!) and run them at around 40 psi. Still bottom out once in a while, but no pinch flats so far this season.

When the rain comes, I'll switch over to Clement PDX tires.

Good luck and have fun.
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Old 11-09-13, 10:13 PM   #6
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I did the race. It was brutally hard!

Got there an hour early to practice and fiddled around with tire pressures. Ended up going as low as I could without high risk of pinch flatting (about 28f/38r). During the race, I crashed 3 times...twice in the sand pit so it didn't hurt too much. It was quite painful to approach the stairs and be at 90% max HR and then have to grab the bike and run up them. Ouch! It was really fun to get my feet wet though and I learned a lot about riding this bike!

Bob
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Old 11-10-13, 11:17 AM   #7
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Originally Posted by bobonker View Post
I did the race .... It was brutally hard! .... I crashed ... 90% max HR ... really fun
Great race report. Pretty much describes most (all) of my races this season too. Any pictures? I'm over here in the Sacto area and there are a few regular photographers who post pictures a couple of days after each race. Always fun to see the action photos.

If you're close enough and want more fun, the Sacramento CX series is in full swing. Great group of racers at all levels and fantastic courses. http://bicyclingevents.com/SacCx/ Next Sunday's (11/17) venue at Lange Twins winery near Acampo is one of the best.

Regards.
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Old 11-10-13, 01:52 PM   #8
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This was my first race too! Running a single speed with Iron Cross wheels with tubeless Raven tires @ 34psi F&B (I am 175lb) and did not think about adjusting (too much else going on...) Everything worked great - at least I never felt short of grip or like rolling off even with the many pavement U-turns it had.

My HR was around 94-96% but am guessing the Strava/Garmin max calculation does not work for me now I am 45.

I am looking at the Sacto races too. They look great. I just wished I'd jumped on this CX wagon earlier in the season. I am hoping to find other XC race like things to do post cross season here in NorCal.

Here's a video from my sons iPhone (excuse the portrait quality!).
http://youtu.be/kmN_OLw7Lq4

Mike.
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Old 11-11-13, 12:55 AM   #9
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I'm looking at the Sac stuff, too! The race on the 17th might be doable, but we've got a family event at noon. I live in the East Bay about an hour away. Hmmm.

These are probably 2 of the most important things that I learned:

1. If you take the right line, you can go through a given section much faster than you think.
2. If you take the wrong line, you will fall much easier than you think.

Bob
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Old 11-13-13, 06:49 PM   #10
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Originally Posted by bobonker View Post
These are probably 2 of the most important things that I learned:

1. If you take the right line, you can go through a given section much faster than you think.
2. If you take the wrong line, you will fall much easier than you think.
And often you'll find that the line that most other people take it totally wrong; you have to figure it out yourself.
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Old 11-20-13, 10:55 AM   #11
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If you are riding fives(beginner) you will be the first to go in the morning when the course is especially wet and squirly. I would recommend picking up something with tread or you can just deal. Anything goes it's cross racing after all.
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