Arno, Yes I use the bike every couple of days and think it'll last years. The brakes are terrible, and it's way too heavy, but I really like it and always get asked questions because they are very unusual here. You could attach the gear change cable with a clear cable tie or drill the 2 holes in the frame to route internally which will look much better.

I changed 3-speed sturmey archer + coaster to the 8-speed nexus which requires a 135mm dropout. The stretch was large - and more that I wanted to try myself - but the bike store had no problem. I'd say that stretching 6mm will be no problem. I went for the 8-speed because we have plenty of hills in Sydney, the bike is pretty heavy, and I found it over-geared in the 1st gear.

You'll use the small lever to click to the smallest cog.

The NiCad battery size is "2/3 AAA" - they are the same diameter as AAA but 2/3 the length.

Get the ones with solder tabs.

Hi Paul, No - you colder -ve to -ve

The case feels slightly warm when it’s charging. Good luck!

Thanks! I’ve updated the guide. Glad it worked for you, and you were able to save your Fly12

Thanks. These are great safety lights so it’s nice to keep them going.

Spot on guide. Quick, accurate, and took 5 mins

Extremely clear guide. Even with small loads the machine would stop with an out of balance alarm. I replaced the rods and bands in about 15min and the problem was gone.