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JMack's Discussions

Tire Pressure

Started this discussion. Last reply by VJ Goh Aug 24, 2011. 19 Replies

Off-Season Photo Contest #1

Started this discussion. Last reply by Ronnie Crandall Aug 15, 2010. 5 Replies

Upgrades for next season?

Started this discussion. Last reply by Skronglite Industries Dec 14, 2010. 33 Replies

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Latest Activity

VJ Goh replied to JMack's discussion Tire Pressure
"Having just done the Cycle-Smart CX camp and having a coach tell me what to do really helped. I can run my Michelin Muds (blue!) clinchers at 35 psi and corner really aggressively. I'm about 78kg.   Before the camp, I would habitually…"
Aug 24, 2011
Michael Cole replied to JMack's discussion Tire Pressure
"Totally by feel and traction.  When training I run higher pressure so I can avoid pinch flats.  On race day I go for maximum traction for the conditions.  In the Pacific North West that pretty much means rain, and mud.  Since I…"
Aug 1, 2011
Emil replied to JMack's discussion Tire Pressure
"I'm pretty much with the group on this although I don't quite like to bottom out my rear (or the tire) on the warmup lap. May try that in training and see if I can get along with it. Still use a manual pump but also a digital guage with…"
Jul 22, 2011
nik c replied to JMack's discussion Tire Pressure
"I'm all about testing different tyre/pressure combos 'in the field' before race day (ie on practice/training rides).   this helps me get a faster idea of a baseline pressure and also how well a pressure is working (compared to…"
Jul 20, 2011
JMack replied to skibikejunkie's discussion Want to Buy: file treads
"How about a mismatched set?  One Challenge, one Vittoria. Both brand new, never glued."
Jun 27, 2011
Chris Mayhew replied to JMack's discussion Tire Pressure
Jun 17, 2011
Joey Mullan replied to JMack's discussion Tire Pressure
"What ever happened to the rule of thumb" method of "does my tire squat too much under my weight in the rear?" The "eye-ball'n method", if you will."
Jun 17, 2011
Gregg Germer replied to JMack's discussion Tire Pressure
"I will agree the baseline pressure is a good idea, but it's really about experimentation on non-race days that is the way to determine your approximate tire pressure for a given tread. Recently I've found the limit on back-tire pressure…"
Jun 1, 2011

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Magnolia, DE
Current Bike Collection:
Van Dessel Hole Shot
Specialized Transition
Aegis Aro Svelte
Gunnar Rockhound
1989 Trek - My first race bike, still ridden today
And enough parts to build at least two others.
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Dream Bike:
Anything I can sneak past my wife.
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The people. The community.
How long have you been racing cyclocross?
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Comment Wall (15 comments)

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At 5:51pm on November 3, 2009, JesseD said…
Read your article about iron cross, really enjoyed it. Did you race it or are you shooting for next year?
At 6:59pm on June 17, 2009, J. Suzuki said…
Please feel free to use any photos, I only ask for photo credit.

At 6:15am on June 8, 2009, Dan Killingsworth said…
Jamie- image sent!
At 10:48am on April 15, 2009, Dan Werle said…
Hey JMack, I read that you're doing an article on long-distance 'cross-type races. I've started a thread on the CXMagazine forums that identifies a number of these types of events if you need more information on them.

I can't wait to read the article. Those types of events just have a certain pull that really excites me.

Take care.

At 10:14am on March 30, 2009, smitty said…
JMACK, The head honch for the Crossniacs would be non other than Jared Roy,
At 12:13am on March 28, 2009, Albino said…
Hey, sorry I couldn't get the photo to you in time. Ill still get it to you all the same.

At 3:23pm on March 23, 2009, elgee said…
Karen Jarchow took a bunch of great pics yesterday and she says it is fine to use them, she offered to send high rez versions on a disc. I can get her your e-mail. Alot of what she took is on my Addicted to Bicycles blog today...use what you want, we had a great turn out and some great races with some pretty big names...
At 6:42am on March 20, 2009, Ian Briggs said…

I have Mark Lasers' private contact info if you need it. If you do contact me off-list on

Ian B
At 2:37am on March 20, 2009, Ian Briggs said…
Good Morning,

Perfectly OK to use the image. I'll send over a full-rez (600dpi) actually as scanned tonight, but in the meantime you could download a slightly compressed / scaled down image of the same pic here:-

Where you'll see there is a full caption / info too...

Whilst on the subject. Although I have a limited no. of vintage shots like this (a few) - I have been sent some pix by a former UK Pro' rider from the late '70s / early '80s - Barry Davies, which might be of interest. You can find some downloadable versions of a small no. of these pix on the same blog (on the earlier pages from Sept. '08). I'm sure Baz would have no objections to their use.

He contacted me because of my connection now with the Iron Cross races organised by Mark Laser / Yellow Breeches Racing out of PA, USA. and he plans to ride this year's race during the coming October. Iron Cross and the Three Peaks are certainly races which are worthy of editorial comment / feature in any 'Cross publication - they attract scant attention really considering their importance, and if you need anything connected with either event (pix /text) let me know. Aagin I have both 'stuff' and the contacts.


Ian Briggs
At 4:18pm on March 19, 2009, sasha said…
I'd be happy to send you the file. What's the preferred resolution? High as possible?

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