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I use a Cateye 'Opticube' rear light in flashing mode all the time which is mounted on my seat post. It has two banks of led lights and is visible even in bright sunlight. I also have it angled up slightly so that lorry drivers will see it. When I first started doing this several years ago I...

................OR the tyres might go off, or they might be the wrong colour!!! I have been a fan for years but please bring back REAL F1 racing!!!!!!!!

Do the high prices mean that second hand values will be good? I paid £1950 for my 2011 ProConnect Disc. I intend to give up cycling in Apr 2012. Will I be able to recover a large part of that outlay for the bike? If there is such a big demand maybe I should start a waiting list of potential...

The tyres have had to go back to Kalkhoff in Germany via 50C, but still no reply - what a service from Kalkhoff.

The bike has been sold. I have a 2006 Giant Lafree Comfort Step Thru in very good condition. It has new Marathon Plus tyres, a smaller rear sprocket is fitted and I have a spare motor sprocket. Battery is still reasonable and a new one is available from Giant priced £300 they tell me. I would...

July 2008 ProConnect for sale. 53cm crossbar frame, silver. 16T rear sprocket, good Marathon Plus tyres. Chain wheel, motor drive sprocket, rear sprocket and chain all renewed recently and new Koolstop brakes fitted. Used up to 6 months ago then became my spare bike but hasn't been used so I...

I did my 14 mile commute today on my PC Disc with the 11T motor sprocket and the 41T chain wheel and it feels just fine. No noise, no pedal vibration and no loose chain. Thanks to the guys on here for their invaluable help in resolving the problem and to 50C for supplying the parts for free and...

QUOTE=JamesC;114008]I would fit the 41T as the first step. If the 41T fits fine within the existing chain length and gives a nice feel, then you will have lots of confidence about the chain length having been 2 links too long for the original 35T. You will also have the opportunity to find out...

A few weeks ago I phoned 50C and talked to Jim about the problem. He sent me a 11T & 41T as I suggested they might solve the problem having followed the comments on this site. I have just got back from holiday to find the parts had arrived. I have cleaned the chain and fitted the 11T first to...

The drive on my 2008 PC has worked well but I am experiencing this problem on my new PC Disc. Can anyone tell me why Kalkhoff would change a good system to the present one with the Sturmey Archer rear tensioner. They have added more mechanical bits which just complicates the set-up and means...

Scott You seem to think it is just 'noise' If you had taken the time to read all the posts about this you would have seen that it is about pedal vibration / slipping sprockets and that the people concerned have spent considerable time investigating the matter. I would have prefered it if you...

Vassa thank you for your helpful posting. I have posted several times about this problem which I have on my Feb 2011 PC Disc hoping that someone would come up with an explanation/solution. I know that 50C staff regularly read this website and I would have liked them to join in with helpful...

I tried out the cable-tie 'fix' on my 14 mile commute today. It was improved but I could still hear some noise so I pulled on the cable-tie a bit more and it then seemed just right on my last few miles. I think it has something to do with the Shimano guide wheel as this is what is being held...

Thanks for the link deadmonkey.

I was a bit sceptical about this 'fix' but I gave it a try today (using a 'matching' black cable-tie) and it did as you said. Now we need to know why!

I got a PC Disc in Feb. and I haven't been happy with the sprocket/chain running. It is just as you describe. I hadn't thought of turning the power off as you mentioned but I did today and it runs perfectly smoothly. I had the chain coming off about a month ago and found the vertical arm...

50C sent it out within a day or two as the Continental tyres are covered with an anti-puncture guarantee. I sent the original two tyres plus that one back to 50C on advice from Continental UK who said I should specify a Warranty claim which is different to the anti-puncture guarantee. I have...

I've got the PC Disc and I had a ticking which I think was a rear light wire just touching the spokes. If you have reflectors on the wheels take them off as one of mine flew off and damaged a spoke. Don't worry about the 24 spoke situation that we had with the older PC's as these wheels...

The chain on my PC Disc kept coming off the rear sprocket this afternoon. I noticed that the arm that guides the chain was loose and had sideways movement. I tightened the screw on this arm using an allen key and it seems alright now. Is that all that is required or should it be at a...