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I wish I could!

that's not necessary. You can get what you want imported from Taiwan but SRAM parts for example takes 4 months to import, so it has to be organised well in advance. It also adds to cost. We have never had any trouble with the GXP crankset, the problem could be somewhere else. It is a bit like...

that's the trouble from having bikes made in Tianjin. You don't have access to all the stuff you have in Europe. The Ounce 245A is about the best I can find in China.

those VP pedals can feel notchy when new. Put a bit of grease into the ballbearings - they will run much better in a few days.

SW, it's a GXP crankset, it costs about £65.

ScottA, The bottom bracket has external ball bearings, it is quite easy to sort out if it's one of the bearings that gives you trouble. Take the chain off the ring and turn the cranks by hand. Does it feel notchy?

thanks for the encouragement, I am making £1,200-£1,300 bikes this year, it will take time to build up the expertise. at £2k price point, most Bosch bikes have cheap fork, brakes, headset, handlebars, pedals, rack, grips, lights and a 500WH battery at most. About the same sort of stuff that I...

if you mean by engagement panting your lungs out then I won't go there but I'll give you a good enough bike to compete with Bosch bikes in a couple of years and still under 2k.

I am not sure I can endure 5 years with TM as PM. If it's a hard brexit that we are going to get, I may just as well retire, move to France or Guernsey and leave the business to Andy.

I can calculate the user input for 85rpm if you want to read. The point is, Bosch bikes are perfect for normally fit cyclists (ie your legs can output up to 200W continuously and you can spin up to 85 rpm at the same time). If your fitness is less, a more flexible system is better.

I test rode a few over the years. The motors are getting more responsive but not different. The point I tried to make (that you still don't see) is that old people tend to have lower cadence through natural aging. I can still hold on to about 90 rpm for 5 minutes but I will have to slow down...

I don't think his road is very steep. He is limited by both strength and speed. On flat roads, he can upshift and hit 15mph easily but not on that road.

Latest poll: Tories lead Labour by 7% 7% seems fair. The Pound rose first thing this morning, the City was betting on TM to win, now has dropped back a fair bit. Maybe that exit poll is favouring Labour. I think this time the turn out will be low because of constant coverage of brexit and...

I think the OP wonders how he can get more speed out of the bike on hills. That's no difficulty with a rotational system but with a torque sensing system, you need to be able to hit 90 rpm to get the best out of the bike. His cadence is about 70 rpm, he is stuck more or less at 11mph on third...

yes, any dielectric grease will do, it's mainly to keep the contact clean, waterproof and the sparks away when you ride over bumps.

while you wait for the result:

that's the difficulty for less fit riders, cadence is proportional to work and power, keeping up the high cadence is like the difference between walking up the stairs and running up the stairs, regardless how steep the stairs are, running up them is hard for some of us.

the main drawback of all the flow batteries is that unlike hydrogen or other biofuel cells, flow batteries use dangerous chemicals like bromine, sulfuric acid etc and they have low gravimetric capacity.

that's what they claimed. In fact, there are currently about 15 systems based on membraneless flow. TBH, would you want to fill your bike's battery of sulfuric acid instead of plugging it into a wall socket?

Let's assume you sample the output of the pedal assist sensor (PAS) at 1kHz. There are only two possibilities: either the customer pedals forward or backward. Let's assume that when he pedals forward, the PAS outputs a high going pulse (from 0V to 4.5V). Let's assume that you have a 6 magnet...