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My Specialized hybrid with 700c wheels and hydraulic disc brakes weighs in at 8.5 kg without the electrics and a single chainring conversion. I’ve added a rear hub motor and 36v 7ah bottle battery. That brings the weight up to just over 12.5kg I can do around 20 miles on a full charge of the...

You can fiddle with the connectors, or you can get the pre-made ones then you just need to solder the wires.

Stick with the 7-speed - and swap over the shifters? Assuming the two bikes use the same groupset manufacturer?

My approach would be to dremel out the pas ring to sit snugly on the inner ring, and then epoxy it, if necessary.

Hello everyone. Sorry to have responded so late. All things to do with bikes have really taken off over the past 12 months, as you are probably aware. We are a local business, supporting the local community with a ‘bike recycling’ project. The ebike stuff is an ‘add on’, purely based on the...

Kwozzymodo submitted a new listing: Refurbished Electric Trike - Refurbished Electric Trike Learn more about this listing...

You might need to adjust the High Limit screw, to limit the outboard derailleur movement

Go on, show us the other side of the motor....

Anyone that has placed a bulk order for ebike parts from China would have experience of the additional duties, vat and ‘processing fee’ chargeable on their order. These costs have added around 40% to the prices listed on Chinese websites. Looking at some of the prices that Chinese sellers are...

I don’t think the original £86.50 should include the local tax.

You missed the bit about our manufacturing base collapsing due to the militancy of the workforce in the 70’s. Anyone with any money to invest was not going to pile it into a business that relied on people to make stuff - hence the shift towards service industries....

Try looking for ‘courier’ helmets

I frequently use the Q100 CST 201rpm motor from BMS Battery. An S06S sine wave torque simulation controller, Pedal Assist Sensor and an S-LCD5 handlebar display take care of the operation of the kit. It’s a simple, reliable system, with plenty of torque in the motor to get you up the hills. I...

Short-term costs are mainly going to be affected by shipping charges - which have gone through the roof since last April.

I always say that you should start with a bike that you enjoy riding, and then add the motor. Too many of the ‘purpose-built’ bikes are heavy and poorly equipped with cheap components. With the budget you mention, you could buy a ‘top-end’ hybrid with carbon forks and quality...

Sounds like you have a few issues to sort out. First off, check the wheel is sitting correctly in the dropouts. If it is off-centre, this will make indexing tricky. (I am assuming that your shifter, rear derailleur and freewheel are compatible/same speed, etc. Shimano and SRAM shifters pull...

I have ordered dozens of rear wheel motors; cassette and freewheel - they have always been specced as 135mm lock nut to lock nut (old) and they have always measured up as 135mm. Sounds like your supplier has messed up. Newer bike frames with ‘boost’ hubs (wider ‘old’ dimensions for more...

You should have a bit of wiggle room to adjust the disc caliper mounts. I must confess to having ridden thousands of miles with motor axles in pretty much the same place in the drop outs as yours. I have fitted torque arms.

You could put your anti-rotation washers on the outside of the dropouts. You can stretch a frame at the back, but, as advised, this puts stresses on the chain and seat stay welds. 4.5mm movement each side is too much, in my opinion. You could re-dish your wheel if it doesn’t sit symmetrically...

The one-piece PAS won’t work with a hollowtech crank. You need a two-piece sensor with separate sensor and magnet ring. You should be able to install the sensor under the drive-side cup. You will need to epoxy the magnet ring to your inner chainring. If you have a dremel, you can cut enough...