http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: Suitable upgrades for an OCR (4?) en Wed, 13 May 2026 02:13:59 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-9033 Wed, 30 Jun 2010 11:36:25 +0000 Smudge 9033@http://citycyclingedinburgh.info/bbpress/ <p>Unfortunately I can't make these times what with work etc :-/<br /> However i had a half hour playing with the gears on Monday night and got them working about 90% of right, and then yesterday coming back from a decent run out the bottom bracket started creaking really badly, looks like I need to rip the transmission apart properly and do some fettling/maint/upgrading... just need to work out what size of BB will fit and I feel some shopping for shiny things coming on... B-) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-8928 Mon, 28 Jun 2010 11:36:41 +0000 spytfyre 8928@http://citycyclingedinburgh.info/bbpress/ <p>Get it along to <a href="http://www.thebikestation.org.uk/">the bikestation</a> on a Wednesday evening or Saturday afternoon:<br /> <a href="http://www.thebikestation.org.uk/fyob/"><br /> Fix Your Own Bike </a> Wednesday 1600 - 2000 (last entry 1900) Saturday 1200 - 1600 </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-8918 Mon, 28 Jun 2010 08:20:36 +0000 Smudge 8918@http://citycyclingedinburgh.info/bbpress/ <p>Had a glance as I left the garage this morning, "7 Speed" on the top of the right hand brake hood. I guess the shifter/mech combination should suit then, still not convinced about the cassette/chain though :-/ I suspect I need to locate an expert and let them have a look (or take some decent pictures?) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-8916 Sun, 27 Jun 2010 23:44:05 +0000 Smudge 8916@http://citycyclingedinburgh.info/bbpress/ <p>Hi Mollie,<br /> It does have a qr skewer, and I do have a suspicion that the wheelset has been changed (and probably the cassette along with it).<br /> I shall have to have a proper look at the rear mech (and count the shifts!!) tomorrow... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-8915 Sun, 27 Jun 2010 23:36:15 +0000 Cyclingmollie 8915@http://citycyclingedinburgh.info/bbpress/ <p>Hi Smudge. An OCR 4 is a good frame and I've got a set of ten year old Sora levers and they still work fine. But I think Sora is an eight or nine speed system so perhaps the seller has fitted the wrong cassette. The Shimano specs for Sora rear mechs are <a href="http://www.shimanoservicecentre.co.uk/exploded_parts.php">here</a>.<br /> The difficulty you describe fitting the rear wheel into the drop-outs is odd. Does it have a QR skewer? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=977#post-8914 Sun, 27 Jun 2010 23:18:30 +0000 Smudge 8914@http://citycyclingedinburgh.info/bbpress/ <p>Hello all,<br /> I have a Giant OCR, 4 I think. It arrived at the right price and is very shiny and whizzy... but..<br /> The gears are not working quite properly, and is has had various changes (I suspect) over its life, so I'm wondering what changes/upgrades are best next and unfortunately my background is MTB's so I don't speak roadbike(!)<br /> It has Shimano Sora "flightdeck" brakes/shifters, sora F&amp;R mechs, a triple chainset (can't remember the make) and a shimano 7 speed cassette. Putting the rear wheel in seems to require the rear hangers pushed out quite a way so I wonder if the wheels are not standard either...</p> <p>Do I take it to someone competent and get them to try setting up the gears? Or are they rubbish and should they be upgraded? What else should be changed on a bike like this? (it already has an aftermarket handlebar stem which by a pleasant fluke is just the right length for me :-)) are there any well known weak points on these bikes?</p> <p>Excuse the basic questions!<br /> Smudge :-) </p>