Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Pedals for gravel/pavement mix ?

Old 04-14-19, 06:22 PM
  #26  
Zaskar
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Definitely agree - there's a lot going for flats. My point is clipless is far from a scam.

I do race (mtn and gravel) but 90% of my rides aren't races. Just yesterday, I did 56 miles on gravel/dirt roads. On one of the downhills, I hit 32 mph. I bunny hopped a handful of puddles (not going 32 mph) and manualed through a couple longer ones. Not once did I wish I was on flats. It's just preference. For doing long rides you just can't beat the efficiency of being clipped in.

Yeah - that's me circa 1982. I wish I still had that bike... and hair. I kept my '94 GT Zaskar LE for years... until I rode my carbon FS 29er. Couldn't ride that old 26" rigid after that.
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Old 04-14-19, 06:42 PM
  #27  
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For anyone considering Shimano M520 pedals - I've been using them exclusively coming up on 5 years now and have 4 sets that I ride regularly. Every single pair has play between the pedal body and the spindle. Dominant foot always has more but over time/clips in or out, each side develops the wobble. I don't notice it riding and in practice it works like an extra degree or two of float - but something to be aware of. I recently rebuilt all 4 sets of pedals over the winter so most of them have minimal play. This is the worst on my main gravel bike, about 400 miles of riding (since rebuild - maybe 6,000 total) and probably dozens and dozens of clip in/out. I've never seen this mentioned anywhere else so figured I'd just drop it here for info purposes.



ETA: I noticed because when they get really loose they have a soft clunk on the pedal stroke. Can only really be heard on quiet pavement but was enough for me to start investigating.

Last edited by Spoonrobot; 04-14-19 at 06:48 PM.
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Old 04-15-19, 10:05 AM
  #28  
redlude97
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Originally Posted by Spoonrobot View Post
For anyone considering Shimano M520 pedals - I've been using them exclusively coming up on 5 years now and have 4 sets that I ride regularly. Every single pair has play between the pedal body and the spindle. Dominant foot always has more but over time/clips in or out, each side develops the wobble. I don't notice it riding and in practice it works like an extra degree or two of float - but something to be aware of. I recently rebuilt all 4 sets of pedals over the winter so most of them have minimal play. This is the worst on my main gravel bike, about 400 miles of riding (since rebuild - maybe 6,000 total) and probably dozens and dozens of clip in/out. I've never seen this mentioned anywhere else so figured I'd just drop it here for info purposes.



ETA: I noticed because when they get really loose they have a soft clunk on the pedal stroke. Can only really be heard on quiet pavement but was enough for me to start investigating.
Did you replace the bearings when you rebuilt? I find the preload can loosen over time or the bearings/races can wear and cause that play. If you address it as soon as it shows up then you can usually prevent it from getting to that point, but with M520s I don't even bother anymore. Open them up once a year, flush them with degreaser, and pump full of grease without touching the preload, if they start to develop play I use a new set.
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Old 04-15-19, 12:12 PM
  #29  
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Yes, bearings replaced. I didn't notice any wear on the races and the preload was still at factory spec for torque. Other than normal bearing wear, I think there's some interplay between the plastic lockbolt and the pedal body/spindle that comes during use. Regardless I don't think it's a major issue, just something to be aware of.
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