Jan, I apologize. I did not mean to offend anyone, and was totally mistaken
about your connection to Rene Herse. Your connection to them in my mind,
somehow became your brand, that you sold. However I stand by my brake comments.
I had intense brake judder on my Specialized Crux, and it was cured by toe-in
(regardless of the cause). Other forks may not have the same results, and using
different brake pads could change things too. I use long Mt. bike Kool Stop
salmon pads with great results. Cantilever brakes are all basically the same.
They all need toe in, regardless of the fork material. You do a great job on
your magazine and products and I can't blame anyone for marketing their
products the best way they see fit.Clayton Bailey
On Friday, June 12, 2015 7:31 AM, Jan Heine <hein...@earthlink.net> wrote:
It's totally normal to be skeptical when a magazine also has a sister company
that sells bicycle components... However, the reason Compass exists is because
we at Bicycle Quarterly wanted to put our research into practice and make the
parts that we want to ride on our own bikes. We cannot tell others what they
should manufacture (and believe me, we have tried!), so we had to do it
ourselves. It's that simple.
The conflict of interest is best dealt with by being honest. So when the
handlebar bag of a test bike that was held on with a Grand Bois decaleur we
sell flew off during a fast gravel descent, of course, we reported it. When we
found that the Grand Bois Ourson tires didn't perform appreciably better than
the Panaracer Col de la Vie that used the same mold, we said so. Sure, we lost
some sales at Compass, but the credibility of Bicycle Quarterly is far more
important. And the Ourson tires were discontinued based on our research, and we
replaced them with our own Compass Loup Loup Pass tires, which perform much
better. And Compass Bicycles sells the MKS platform pedals and half-clips that
I found to offer less optimal performance on short hills... If I was trying to
boost sales, I would have said that the half-clips offer the same performance
as clipless or full toeclips, and have quoted the Youtube study...
To suspect that we talk about fork judder on carbon cyclocross forks only to
boost sales of Rene Herse bikes is a bit far-fetched. For full disclosure, we
do get a small licensing fee from Boulder Bicycles for every Rene Herse bike
sold, but so few of these bikes are being made that it's totally insignificant,
on par of what we make from selling Maxi-Car replacement axles. These are
projects we do because we want to do them, not because they make money. We also
do sell the wonderful Kaisei "Toei Special" fork blades, but again, I doubt
many are sold to riders who'd otherwise buy a production carbon fork...
The carbon fork issue (brake judder with cantilever brakes and a high-mounted
cable hanger) has been reported in many magazines, but I believe we are the
first who figured out what really is happening. It is simply a mismatch between
very stout fork legs and a flexible steerer. Instead of getting the "brake
dive" in the fork legs as the weight transfers forward during braking, you get
flex in the steerer, which affects the tension of the brake cable, setting up a
rhythmic oscillation. It can happen with any fork material, but it's
predominant with carbon forks. I am sorry if that wasn't explained clearly
enough in the article.
Jan Heine
Editor
Bicycle Quarterly
www.bikequarterly.com
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