Showing posts with label SICI. Show all posts
Showing posts with label SICI. Show all posts
Friday, June 25, 2010
Wednesday, June 23, 2010
Longer lefts?
During bike fits, we note the cyclist’s need for longer/shorter pedal spindles or need for extenders. At first we did not think it was that big of a deal. However, the need for longer/shorter spindles has become beyond note worthy.
Literally, we are finding AT LEAST 3 of every 5 cyclist’s stance width requires a spindle width longer or shorter than a standard width pedal.
To track this data even more closely we are noting the need per foot being fitted. In other words 5 bike fits would = 10 feet.
We have recorded as high as 9 of 10 feet needing longer or shorter spindles in a weekend of bike fitting (5 bike fits). That means not one cyclist fit on a standard pair of pedals.
While tracking this information, we noticed the left foot needs to be placed more laterally than the right foot to be accurately placed under the knee. At times, we move the right foot in and the left foot out by changing cleat position. Sometimes, we use a shorter right spindle only. In most cases the left spindle needs to be longer. We are starting to gather a LOT of right pedal spacers and we are now asked at least once a week if we sell “left” pedal spacers only.
What does that mean? One day you will not just buy a pair of pedals but be sized for the correct width pedals (per foot). What is the only pedal manufacturer to address this issue? What pedal companies do you wish would figure this out?
To read more - http://velonews.competitor.com/2010/06/news/coaches-panel-why-do-knees-often-track-asymetrically_120495
Literally, we are finding AT LEAST 3 of every 5 cyclist’s stance width requires a spindle width longer or shorter than a standard width pedal.
To track this data even more closely we are noting the need per foot being fitted. In other words 5 bike fits would = 10 feet.
We have recorded as high as 9 of 10 feet needing longer or shorter spindles in a weekend of bike fitting (5 bike fits). That means not one cyclist fit on a standard pair of pedals.
While tracking this information, we noticed the left foot needs to be placed more laterally than the right foot to be accurately placed under the knee. At times, we move the right foot in and the left foot out by changing cleat position. Sometimes, we use a shorter right spindle only. In most cases the left spindle needs to be longer. We are starting to gather a LOT of right pedal spacers and we are now asked at least once a week if we sell “left” pedal spacers only.
What does that mean? One day you will not just buy a pair of pedals but be sized for the correct width pedals (per foot). What is the only pedal manufacturer to address this issue? What pedal companies do you wish would figure this out?
To read more - http://velonews.competitor.com/2010/06/news/coaches-panel-why-do-knees-often-track-asymetrically_120495
Monday, April 12, 2010
Bike Fit Education - UK
Learn real bike fitting at CycleFit - one of our oldest and best customers. I have worked personally with Phil and Julian. These guys know bike fit. Recently I had the privilege to work with a former apprentice and employee of CycleFit. I was pleasantly surprised with his knowledge and skills.
These guys are beyond Serotta or Trek or any other so called bike fitting schools - combined!
http://www.bikefittingtools.com/index.php?page=cyclefit-bike-fitting-course
These guys are beyond Serotta or Trek or any other so called bike fitting schools - combined!
http://www.bikefittingtools.com/index.php?page=cyclefit-bike-fitting-course
Sunday, March 14, 2010
Orthotics - where is the value?
Last week I met with Anthony who called the office looking for someone to fine tune his bike position as he kept experiencing knee pain in spite of a previous bike fit. Interestingly enough is that he recently got a new set of orthotics and was instructed to do so for his cycling shoes every year.....to address his knee pain. On his last visit to the doctor's office, the saddle height was changed (+5mm), however the 9 year old issue of knee pain still persisted. I was skeptical about tackling this fit because he had been to a Bay Area doctor that helps many cyclists with the fit issues and he had seen by one of the Bay Area's most experienced fitters (and most expensive) both of whom could not solve his issue. Furthermore this bike fitter also taught at Serotta's SICI ... the pressure was on!

As you can see in the photo knee over tow alignment was completely off and neither the doctor nor the previous fitter measured his feet with the FFMD (http://bikefit.com/docs/FFMD.pdf ) or a similar tool! Once I saw his initial position on the bike I knew I had my work cut-out for me.
With a 17 degree and 9 degree (L/R) varus measurement and one knee tracking to the inside and the other outside of the toe line I was glad I had my Speedplay pedal kit available. His tracking was so bad on the right leg that the laser did not even come close to the patella and his knee was not stable at all throughout the pedal stroke. In addition Anthony displayed lot of inward heel rotation which had forced him to install 20mm pedal extenders a few years back. Lastly Anthony rides Specialized BG shoes which should help with their varus built into the sole ...
After close to 2.5 hours of work these are the major changes made to Anthony's fit:
Right Shoe: 2 ITS wedges, 4 cleat wedges, removed the 20mm pedal spacer and set him up with a + 1/4 pedal and moved the foot as far in as possible.
Left Shoe: 2 cleat wedges, a 3mm leg length shim and -1/8 pedal.
Seat position: brought seat forward about 8mm
Hoods: moved R & L hood inward about 10 degrees.
Handlebar: moved handlebar up a few degrees so the hoods/bar created a straight line/contact area for a more neutral wrist position!
Since Anthony was going to go for a ride the following day I gave him a few pointers in the event he would experience some discomfort with the extreme (but necessary) changes made. We are not always sure how the nervous and muscular systems will respond.
Here is what he had to say after the first ride:
"The bike fit is amazing. My bike has never felt this comfortable under me. I had no knee pain. It's the first time in a long while that my speed was entirely dictated by leg fatigue, instead of in part by knee pain. Thank you so much for an excellent fit.
My buddy and I did about 33 miles around Old La Honda, Skyline, and Page Mill. Came up to about 3400 feet of climbing. We pushed pretty hard."
The moral of the story is threefold: never be afraid to tackle a bikefit that was previously done by published experts in the field, never assume that an orthodic is the correct way for someone to adjust fit issues and use as many wedges as needed to get the tracking under control.
I have also realized that many BG shoes I have fitted in the last few months do not appear to have the varus tilt that is claimed. I am still wedging the BG shoes as if they were just plain neutral shoes; maybe their manufacturing tolerances are off because I certainly cannot explain the need for some many wedges on a shoes that supposedly is built to account for 1.5mm of varus tilt.
During my follow-up visit this week we will attempt to remove the custom orthodics and ride with the cycling specific SuperFeet ... Stay tuned!
TOTAL WEDGES USED: 8
Andrew
As you can see in the photo knee over tow alignment was completely off and neither the doctor nor the previous fitter measured his feet with the FFMD (http://bikefit.com/docs/FFMD.pdf ) or a similar tool! Once I saw his initial position on the bike I knew I had my work cut-out for me.
With a 17 degree and 9 degree (L/R) varus measurement and one knee tracking to the inside and the other outside of the toe line I was glad I had my Speedplay pedal kit available. His tracking was so bad on the right leg that the laser did not even come close to the patella and his knee was not stable at all throughout the pedal stroke. In addition Anthony displayed lot of inward heel rotation which had forced him to install 20mm pedal extenders a few years back. Lastly Anthony rides Specialized BG shoes which should help with their varus built into the sole ...
After close to 2.5 hours of work these are the major changes made to Anthony's fit:
Right Shoe: 2 ITS wedges, 4 cleat wedges, removed the 20mm pedal spacer and set him up with a + 1/4 pedal and moved the foot as far in as possible.
Left Shoe: 2 cleat wedges, a 3mm leg length shim and -1/8 pedal.
Seat position: brought seat forward about 8mm
Hoods: moved R & L hood inward about 10 degrees.
Handlebar: moved handlebar up a few degrees so the hoods/bar created a straight line/contact area for a more neutral wrist position!
Since Anthony was going to go for a ride the following day I gave him a few pointers in the event he would experience some discomfort with the extreme (but necessary) changes made. We are not always sure how the nervous and muscular systems will respond.
Here is what he had to say after the first ride:
"The bike fit is amazing. My bike has never felt this comfortable under me. I had no knee pain. It's the first time in a long while that my speed was entirely dictated by leg fatigue, instead of in part by knee pain. Thank you so much for an excellent fit.
My buddy and I did about 33 miles around Old La Honda, Skyline, and Page Mill. Came up to about 3400 feet of climbing. We pushed pretty hard."
The moral of the story is threefold: never be afraid to tackle a bikefit that was previously done by published experts in the field, never assume that an orthodic is the correct way for someone to adjust fit issues and use as many wedges as needed to get the tracking under control.
I have also realized that many BG shoes I have fitted in the last few months do not appear to have the varus tilt that is claimed. I am still wedging the BG shoes as if they were just plain neutral shoes; maybe their manufacturing tolerances are off because I certainly cannot explain the need for some many wedges on a shoes that supposedly is built to account for 1.5mm of varus tilt.
During my follow-up visit this week we will attempt to remove the custom orthodics and ride with the cycling specific SuperFeet ... Stay tuned!
TOTAL WEDGES USED: 8
Andrew
Labels:
bike fit,
bike fitting,
cleats wedges,
ITS wedge,
Leg length Shim,
orthodics,
serotta,
SF/Bay Area,
SICI,
speedplay,
tracking
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