http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: 165mm to 170mm crank - will I notice? en Wed, 13 May 2026 02:13:59 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8564 Thu, 17 Jun 2010 10:00:58 +0000 Wilmington's Cow 8564@http://citycyclingedinburgh.info/bbpress/ <p>Came up trumps. I rooted about for 5 minutes but found the ONLY 165mm in there (I also found a 152mm - eh?). Whacked it on the bike last night, stuck some new brake pads on, bit of a clean up and some oil on the chain, and this morning's commute was a joy. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8519 Wed, 16 Jun 2010 17:20:32 +0000 Wilmington's Cow 8519@http://citycyclingedinburgh.info/bbpress/ <p>Off to the Bike Station on the way home tonight to have a gander. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8365 Mon, 14 Jun 2010 16:14:20 +0000 LaidBack 8365@http://citycyclingedinburgh.info/bbpress/ <p><em>Would I notice if the drive side were 165mm and the non-drive 170mm??? </em></p> <p>Ask Madame Raven in CityCycling ;-)</p> <p>Seriously though you must have equal lengths of cranks.</p> <p>As far as length goes if you are taller then better with longer ones. So 175 / 172.5 / 170 etc<br /> Interested to know what Tri Centre would say as Kim suggests.</p> <p>I have supplied bikes with 155mm cranks which reduces heel to wheel overlap on LB bikes for smaller riders. It also has the effect of (virtually) 'raising' the gear as your feet travel slower to make a turn on the pedals. A debate on this could occupy a thread in itself something in Velo Vision a while back. Mike Burrows also has written about this.<br /> For children and shorter people smaller cranks work well - hence crank shorteners for children on tandems<br /> <em>One BHPC race rider did have a bike with 75mm cranks (yes 75mm is shorter than the lines of type you are reading here). This is very difficult to cycle up hills so not recommended!</em> </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8347 Mon, 14 Jun 2010 12:50:28 +0000 Kim 8347@http://citycyclingedinburgh.info/bbpress/ <p>Go to <a href="http://www.thetricentre.com/index-2.html">the Tri Centre</a> and get your self measured up, then you will know which is the correct size of crank for you. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8322 Mon, 14 Jun 2010 11:34:28 +0000 spytfyre 8322@http://citycyclingedinburgh.info/bbpress/ <p>I'm with Min on this one - get two </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8321 Mon, 14 Jun 2010 11:27:23 +0000 Min 8321@http://citycyclingedinburgh.info/bbpress/ <p>Sounds like a good way to gain yourself an injury to me. Probably of the variety that just creeps up on you over time but then keeps you off the bike for months. If it were me I'd just fork out for two the same length. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8318 Mon, 14 Jun 2010 11:05:22 +0000 Wilmington's Cow 8318@http://citycyclingedinburgh.info/bbpress/ <p>I wondered about that (got a dodgy left knee anyway, though riding doesn't really cause any issues), but then thought, well my geared bike has 170mm cranks, so why would there be a difference? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8317 Mon, 14 Jun 2010 11:01:57 +0000 recombodna 8317@http://citycyclingedinburgh.info/bbpress/ <p>Also you may develop a sore knee. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8314 Mon, 14 Jun 2010 10:36:59 +0000 chdot 8314@http://citycyclingedinburgh.info/bbpress/ <p>Probably</p> <p>you'd get used to it </p> <p>Then EVERY other bike would feel strange </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=933#post-8311 Mon, 14 Jun 2010 10:34:43 +0000 Wilmington's Cow 8311@http://citycyclingedinburgh.info/bbpress/ <p>My left crank on the fixed wheel needs replaced. It's a 165mm, but they're thin on the ground (cheaply and singly). Would I notice if the drive side were 165mm and the non-drive 170mm??? </p>