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A Wider Q-Factor Possibly Beneficial?

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A Wider Q-Factor Possibly Beneficial?

Old 09-29-22, 02:02 PM
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For the record, not to answer any questions because, ... well, ... I can only speak for one.

typically riding racy road bikes with a double crankset, when I ride one of my triples - the hips feel strange at first. On one Campy10 triple the feeling persists most of a 30mile ride. Not exactly pain, just different. When riding that triple for a full week over 400miles, there was no problem.

I prefer a narrow-ish Q. But being over 6'+, & a bit leggy - I think it is not a major concern for me.
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Old 09-29-22, 02:21 PM
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I personally don't like narrow. My fixed gear has omnium cranks which have are 145mm q according to the internet and they just feel really oddly narrow. Like when I stand to mash the pedals I feel like I'm trying to balance on a very narrow ledge, there just isn't the support I'm looking for. I'm much happier on my bikes with mtb q-factors.
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Old 10-20-22, 09:37 PM
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Just a data point:

The Shimano MT-60 Deore triple I'm running on my 85 Fuji (45/42/30) is spec'd, pe​​r St. Sheldon, at 150 mm with a 122.5 spindle. I needed a 118 bb to allow the double front derailleur to make the swing. (You can't use a triple FD on half-steps, they hit the middle ring.) So, I'm running at around 145.5-ish at the crank.

But the MKS Urban Platforms and my size 12.5 - 13 feet probably widen things out quite a bit. It seems to me that the real measurement would be CTC across the pedal tops, +/- cleat position if you use them.

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Old 10-21-22, 05:29 AM
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In the end, its about the pedal stroke, all of it

Next time you ride and come up to another rider or a group, take a look at the rider in front of you. Watch how the leg extends at the down stroke. Watch how the feet are planted onto the pedal at that bottom of the stroke. Watch how the pelvis moves (rotates) with the pedal stroke. Watch how the knees move horizontally or remains vertically during the pedal stroke (knee drift).
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Old 12-02-22, 09:20 PM
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Originally Posted by Iride01
Way way back in 2019? Or perhaps you thought this was from 1819?

Welcome to BF, but Q factor has been a known thing for quite a while. I'm pretty sure I'd seen the term used back into my younger days without internet in the 70's and before.
I agree, the term is pretty old. I don't know when I first heard or saw it, but I think it was in the first half of the 1970s.
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Old 12-08-22, 08:49 PM
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Originally Posted by Road Fan
I agree, the term is pretty old. I don't know when I first heard or saw it, but I think it was in the first half of the 1970s.
I first came across Q-factor in the 1990 Bridgestone catalog. Grant Peterson, chief Bridgestone designer, claims to have coined it. Here's his explanation. https://pedalchile.com/blog/q-factor

Of course, in 1990, 126 or 130 mm rear axles were de rigeur, so there was no need to go too wide.
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