Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

pedal strike and crank length

Search
Notices
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)

pedal strike and crank length

Thread Tools
 
Search this Thread
 
Old 03-07-11 | 01:56 PM
  #1  
illdthedj's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 2,280
Likes: 2
From: Modesto, Ca

Bikes: klein quantum, litespeed tuscany, bianchi pista concept, centurion comp ta, centurion super le mans, traitor ringleader

pedal strike and crank length

just curious if anyone here has experienced pedal strike...
where your pedal hits the ground in a turn. (not when your foot touches the front tire....is that pedal strike too or does that have a diff name?)

by any chance do you know what length your crank was when it happened?

i am thinking of purchasing either 165 or 170 cranks. I am tall and lanky limbed so thinking the 170s would be good for me, but ive noticed 165 seems to be some sort of fixed gear standard.

yah i know bottom bracket clearance/height has allot to do with it as well.

maybe i should just not be a weenie, get the 170s, and be careful on turns.
illdthedj is offline  
Reply
Old 03-07-11 | 02:01 PM
  #2  
hairnet's Avatar
Fresh Garbage
 
Joined: Apr 2009
Posts: 13,190
Likes: 30
From: Los Angeles

Bikes: N+1

You'll be fine with 170s unless you're riding something a real low BB, but you're probably on a track frame. Pedals make a difference too. Pedal strike is more likely on fast wide turns that have you leaning a lot, take a good line and you'll be fine. If you're not comfortable cornering then slow down before the turn otherwise you will go wide.

Just watch out for those raised curbs

Last edited by hairnet; 03-07-11 at 02:08 PM.
hairnet is offline  
Reply
Old 03-07-11 | 02:13 PM
  #3  
FastJake's Avatar
Constant tinkerer
 
Joined: May 2010
Posts: 8,040
Likes: 156
From: Madison, WI
When I was a kid I struck a pedal on my MTB pedaling though a corner. I might've hit the curb, I'm not sure. Since then I've been paranoid and now take wide corners on my FG. I have 170 cranks, and I probably have way more room than I feel like I do. I wouldn't worry about it unless you have a super low BB.
FastJake is offline  
Reply
Old 03-07-11 | 02:23 PM
  #4  
ganja mon
 
Joined: May 2009
Posts: 181
Likes: 0
From: Southern California

Bikes: affinity marta

I'm riding a lo pro with 165's. Pedal strike is not apparent but toe overlap is huge! This makes me very paranoid as well
liberalswine is offline  
Reply
Old 03-07-11 | 02:28 PM
  #5  
adriano's Avatar
*
 
Joined: Nov 2008
Posts: 6,876
Likes: 1
From: Baltimore

Bikes: https://velospace.org/node/18951

toe overlap is so much better than a long slack front.
__________________

α
adriano is offline  
Reply
Old 03-07-11 | 03:20 PM
  #6  
illdthedj's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 2,280
Likes: 2
From: Modesto, Ca

Bikes: klein quantum, litespeed tuscany, bianchi pista concept, centurion comp ta, centurion super le mans, traitor ringleader

yah the frame's bb is not super low or anything. guess im just being paranoid. normal track pedals, so they arn't super wide or anything. i guess you would have to be getting real sideways in a turn to pedal strike.

yay now its time to buy the ird defiant cranks ive been pining over ;p
illdthedj is offline  
Reply
Old 03-07-11 | 03:36 PM
  #7  
jdgesus's Avatar
sɹɐʇsɟoןןnɟsʇıbɟɯo
 
Joined: Oct 2010
Posts: 3,986
Likes: 0
From: seattle, too many links

Bikes: fixed gear recumbent trike

i have 172.5 on my black bike
and i never had the strike.

but on my touring bike, with 175s (and lower BB) i've gotten strikes abuncha times (thank god for gears in this case)
__________________
Originally Posted by yummygooey
crabon/campy/rapha/roadie-bro.

next step is recumbent.




my bikes | bike blog | beer blog | work 1 | work 2
jdgesus is offline  
Reply
Old 03-07-11 | 03:48 PM
  #8  
tramnineteen's Avatar
Senior Member
 
Joined: Jul 2008
Posts: 275
Likes: 0
From: Portland, OR

Bikes: Killo TT

I have a 58cm Windsor hour and 175 cranks and do run into pedal strike fairly often. Most of the time it's no big deal. I road the bike for several years and never went down because of it even after so many petal strikes that the petals had bent / been ground down where it happened. It wasn't until a couple months ago that I took a fast U turn and had to lean in very far that I fell.

Your petal on strike:
tramnineteen is offline  
Reply
Old 03-07-11 | 05:08 PM
  #9  
xavier853's Avatar
.
 
Joined: May 2009
Posts: 2,027
Likes: 0
From: Columbus

Bikes: Pegueot UO8, Tommaso Augusta

Originally Posted by hairnet
You'll be fine with 170s unless you're riding something a real low BB, but you're probably on a track frame. Pedals make a difference too. Pedal strike is more likely on fast wide turns that have you leaning a lot, take a good line and you'll be fine. If you're not comfortable cornering then slow down before the turn otherwise you will go wide.

Just watch out for those raised curbs
I wouldnt go much higher than 170 on a track frame.

If your running ss then ofcourse it is not as much of a problem

If you plan to put 170 cranks on your tommaso, youll be fine
xavier853 is offline  
Reply
Old 03-07-11 | 07:06 PM
  #10  
hairnet's Avatar
Fresh Garbage
 
Joined: Apr 2009
Posts: 13,190
Likes: 30
From: Los Angeles

Bikes: N+1

Originally Posted by jdgesus
but on my touring bike, with 175s (and lower BB) i've gotten strikes abuncha times (thank god for gears in this case)
I pedaled right through a strike mid pack during a race. So freaking sketchy and a total noob move, but I didnt lose control. That was a fast wide turn by the way.
hairnet is offline  
Reply
Old 03-07-11 | 08:03 PM
  #11  
dbwoi's Avatar
Senior Member
 
Joined: Jun 2010
Posts: 383
Likes: 0
From: Davis, Ca

Bikes: Peugeot U0-8 (Stolen), Motobecane Grand Record, 80's Diamondback BMX, Peugeot Monaco

I think I had 175mm cranks on my first conversion, and I had such bad pedal strike one time that i completely broke my pedal lol.
dbwoi is offline  
Reply
Old 03-08-11 | 08:19 AM
  #12  
Scrodzilla's Avatar
Your cog is slipping.
Titanium Club Membership
Sheldon Brown Memorial - Titanium
15 Anniversary
 
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA

Bikes: EAI Bareknuckle

Originally Posted by hairnet
I pedaled right through a strike mid pack during a race. So freaking sketchy and a total noob move, but I didnt lose control. That was a fast wide turn by the way.
At 9'6" this could have been a major catastrophe.
Scrodzilla is offline  
Reply
Old 03-08-11 | 11:07 AM
  #13  
avner's Avatar
Fueled by Tigers Blood
 
Joined: May 2010
Posts: 1,484
Likes: 0
From: Echo Park, California
Originally Posted by hairnet
I pedaled right through a strike mid pack during a race. So freaking sketchy and a total noob move, but I didnt lose control. That was a fast wide turn by the way.
speaking of losing control, after nearly getting hit, then getting clipped during a ride someone lost control and swerved into me, I some how managed to unclip, jump off my bike and run through a half dozen bikers without falling down.

Also, Ride clipless. Using my SPDs I've noticed I have significantly better clearance on turns and no toe overlap.
avner is offline  
Reply
Old 03-08-11 | 11:12 AM
  #14  
Higher Class's Avatar
soft pedal zen
 
Joined: Aug 2010
Posts: 530
Likes: 14

Bikes: Absolutely

Originally Posted by avner
Also, Ride clipless. Using my SPDs I've noticed I have significantly better clearance on turns and no toe overlap.
Yeah, this. I have plenty of toe overlap, but I never have to worry about pedal strike.
Higher Class is offline  
Reply
Old 03-08-11 | 11:31 AM
  #15  
Maddox's Avatar
Ride heavy metal.
 
Joined: Sep 2009
Posts: 1,538
Likes: 2
From: Teenage Wasteland, USA

Bikes: '74 Raleigh LTD-3, '76 Motobecane Grand Jubile, '83 Fuji TSIII (customized commuter), '10 Mercier Kilo WT (fixed obsession), '83 Bianchi Alloro, '92 Bridgestone MB-1 (project), '83 Specialized Expedition (project), '79 Peugeot UO-8 (sold)

Originally Posted by adriano
toe overlap is so much better than a long slack front.
This x1000.
Maddox is offline  
Reply
Old 03-08-11 | 12:19 PM
  #16  
M_S
Senior Member
 
Joined: Dec 2006
Posts: 3,693
Likes: 0
I ride fixed with a normal road or cross frames and 170-172.5 cranks. The only time I've gotten pedal strikes was with 23mm tires and big chunky platform pedals. The thing is it only seems to happen at low speed turns, and has never been a big deal the few times it happens. With lower profile pedals like crank brothers I've never had any problems. Just be conscious of the bike you're riding and your surroundings and you'll be fine.

I hate the feel of both high bottom brackets and short cranks, so I don't use either. YMMV.
M_S is offline  
Reply
Old 03-08-11 | 01:27 PM
  #17  
illdthedj's Avatar
Thread Starter
Senior Member
 
Joined: Mar 2010
Posts: 2,280
Likes: 2
From: Modesto, Ca

Bikes: klein quantum, litespeed tuscany, bianchi pista concept, centurion comp ta, centurion super le mans, traitor ringleader

welp thanks guys for the input.

so yes i ended up buying some ird defiant cranks in 170:


im sure pedal strike will not be an issue. the bb is not super low, standard track pedals that arn't super beefy and wide....guess i was just being a weenie. i figured since i pretty much always see 165 cranks on street fixed gear bikes that 165 was standard for pedal strike reasons. i had 165 length cranks in the form of pakes but they did feel a little stubby for my daddy long legs.

ive actually been interested in getting some spd shoes/pedals because me and the girl go to this spin class together and they have spd combo pedals, shes interested in getting spds too....haha i think im rubbing off on her (giggity!) lol i mean in terms of interest in riding bikes....was thinking either chrome or mission workshop "street" spd shoes. that way i can commute to work to wear them around the office as well as use in spin class.

anywho yah thanks people ;p
illdthedj is offline  
Reply
Old 03-08-11 | 02:16 PM
  #18  
hairnet's Avatar
Fresh Garbage
 
Joined: Apr 2009
Posts: 13,190
Likes: 30
From: Los Angeles

Bikes: N+1

Originally Posted by avner
speaking of losing control, after nearly getting hit, then getting clipped during a ride someone lost control and swerved into me, I some how managed to unclip, jump off my bike and run through a half dozen bikers without falling down.
I did the same thing after someone crossed my front wheel. After a few steps and an apparent lifetime I rolled onto my back and escaped without injury. I'd like to do it again but without the risk of breaking my neck
hairnet is offline  
Reply
Old 03-08-11 | 04:28 PM
  #19  
adriano's Avatar
*
 
Joined: Nov 2008
Posts: 6,876
Likes: 1
From: Baltimore

Bikes: https://velospace.org/node/18951

Originally Posted by Scrodzilla
At 9'6" this could have been a major catastrophe.
bear clawing half the pack would go viral quickly though.
__________________

α
adriano is offline  
Reply
Old 03-09-11 | 12:07 AM
  #20  
bleedingapple's Avatar
Senior Member
 
Joined: Jan 2010
Posts: 698
Likes: 0
From: Portland, OR

Bikes: Leader 722TS, Surly Cross Check, GT Outpost, Haro Z16, Trek 1000

Originally Posted by illdthedj
....was thinking either chrome or mission workshop "street" spd shoes. that way i can commute to work to wear them around the office as well as use in spin class.
there is also DZR, who makes the mission ones and cheaper too...
bleedingapple is offline  
Reply
Old 03-09-11 | 08:50 PM
  #21  
Senior Member
 
Joined: Aug 2008
Posts: 1,025
Likes: 0
You know, I ride my fixed gear so much slower than my geared bike I don't ever really turn corners fast enough to lean over enough to even think about pedal strike.
clink83 is offline  
Reply
Old 03-10-11 | 04:37 AM
  #22  
adriano's Avatar
*
 
Joined: Nov 2008
Posts: 6,876
Likes: 1
From: Baltimore

Bikes: https://velospace.org/node/18951

if im on my fixed gear, i have no ambitions to go fast.
__________________

α
adriano is offline  
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ciadrul
Bicycle Mechanics
2
07-18-17 10:56 AM
sldahlin
Road Cycling
13
03-08-14 11:11 PM
froymot
Commuting
13
10-28-13 10:16 AM
lostforawhile
Adaptive Cycling: Handcycles, Amputee Adaptation, Visual Impairment, and Other Needs
4
11-21-12 06:04 PM
arp415
Singlespeed & Fixed Gear
28
06-25-10 03:25 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.