Wheelie_bin

The control unit has come back and I've taken the bike round the block and all appears fine. We'll see how it goes. The real test is when I next take it to work. I'd like to think this will be the last time I have a problem with it - ever the optimist me.

Thanks gryffe, I've sent the control unit back to 50 cycles to analyse - they hope it's just a software problem. Like you it has dented my faith in the Xion drive which up until now was a cracking unit. I'd hoped to get a number of years commuting out of this bike - I'll post here later when I know more.

My Xion has broken after 1500 miles / 5 months use! I've got the dreaded M in a triangle which says that the motor is broken andit has to go back to the shop. Has anyone else been this unlucky?

Agree with the comment about drag ON THE FLAT - although to be fair getting above 16 mph on an unassisted bike takes a lot of effort - so it's hard to be objective. Perhaps the Xion motor is so good up until 16mph it makes it seem worse than it is. I thought the X24 was seriously well engineered at first (which is not to say it isn't), but the Xion drive is so silent you can be forgiven for thinking it hasn't cut in yet when gently cruising. As regards downhill - In my experience the brake assist function only cuts in if you are around the speed set. So if you are going at 20mph downhill it doesn't cut in. I think brake assist is misleading - it's really a function to maintain a specific speed once it has been reached, whether from a slower speed or a faster speed through normal braking. If going downhill I can override it by pedalling slightly but I can't re-engage it unless I brake back down to 16mph. I like it, I can go down my local hill at 26-28 mph the same as an unassisted bike or I can choose to cruise at 15 mph and save my rims and put a little bit of power back in the battery.

Had similar problem on my X24. After intial panic I "rebooted" it by taking the control panel out and putting it back in again. Your's sounds more serious though.