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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-25-06, 09:21 PM   #1
sers
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the pedal strikes back

i have a question regarding clipless pedal strike.

given one's shoe sticks out farther to the side, front and back and with all other things being equal, isn't the angle at which pedal strike occurs going to be the same on flat ground for any given pedal?

considering the case of turning into an incline, i'm not sure how much difference a flatter pedal is going to make. it would seem that someone using speedplays wouldn't be able to turn more than someone using a look pedal. isn't the shoe is going to make contact with the ground first?



a long time ago, in a galaxy far, far away they had pedal strike proof bicycles:

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Old 05-25-06, 09:49 PM   #2
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where'd you find that flick of my bike?
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Old 05-25-06, 10:35 PM   #3
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I had pedal strike today, but it was my geared bike. That thing has a 113mm BB spindle, so I think that is part of the cause. Plus the BB is a bit lower than it is on my fixed gear, but really not by much.

Anyway it was definitely the pedal that hit, not the shoe.
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Old 05-26-06, 01:18 AM   #4
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Quote:
Originally Posted by sers
i isn't the shoe is going to make contact with the ground first?
No.
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Old 05-26-06, 03:28 AM   #5
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Quote:
Originally Posted by sers
isn't the shoe is going to make contact with the ground first?
I doubt it. Your foot is elevated higher than the pedal and I've never seen a pedal system that leaves your foot hanging over that much. Maybe with that crazy side mount cleat system, but not with anything pratical and common.
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Old 05-26-06, 07:14 AM   #6
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Quote:
Originally Posted by sers
given one's shoe sticks out farther to the side, front and back and with all other things being equal, isn't the angle at which pedal strike occurs going to be the same on flat ground for any given pedal?
Best way to test: Take your shoe off your foot. Clip it into the pedal. Position pedal so it's at the bottom of the stroke. Lean bike over. Which hits first, pedal or shoe? Report back immediately.
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Old 05-26-06, 07:15 AM   #7
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Oh h*ll. John Williams just took over my brain.
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Old 05-26-06, 07:27 AM   #8
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when I lean into tight turns, at the bottom of my stroke, I point my toe so that my clip (I use clips and straps) DOES strike first and I can guage the pedal strike based on that
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Old 05-26-06, 08:05 AM   #9
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By using a narrower pedal, your foot becomes the thing that will scrape first. with MTB style platforms I used to scrape pedal all the time. with track style platforms, my shoe scrubs occasionally, but at a greater lean angle than the pedal struck.

In other words you get less scraping with a narrower pedal, AND scraping a shoe is way different than pedal strike. a good hard pedal strike will bend your pedal and lift your rear wheel off the ground. A real pants crapping sensation. Scraping a shoe is no big deal at all. Shoes give, pedals don't.
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Old 05-26-06, 11:58 AM   #10
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Originally Posted by sers
*snip*
it would seem that someone using speedplays wouldn't be able to turn more than someone using a look pedal. isn't the shoe is going to make contact with the ground first?
Admittedly, this is from a Speedplay marketing brochure, but if you trust that they didn't manipulate the photo, it's a pretty clear demonstration of the whole cornering angle/pedal size relationship:

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Old 05-26-06, 01:55 PM   #11
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when in doubt ill pedal with my inside foot toe pointed down. If my toe drags on the pavement, I know thats as far as i should lean over
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