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One medium and two large. I'm 5 ft 10" with 31" inside leg, and I get on OK with both sizes. One of the large ones is 19". The others aren't marked, but I'd say 17" and 19". I think my ideal would be 18", but an inch either way is no problem, though as I get older, the larger frame gives a more...

I just had a thought. The heavy motor in your present forks will completely compromise their correct operation because it will reduce the sprung to unsprung ratio by a factor of about 4. You might find that they're acceptable when you don't have a motor in them. That's another reason why it's...

So plenty of opportunity for unforseen problems from the new technology then!

Here you go. It's worth buying just for the forks and still worth the drive down there to get it, though it looks like a pretty good bike for conversion. I have three of these now; one with a Q128, shortly to be changed to a 48v MXUS, just to see what It's like; one has a 48v TSDZ2; and the...

I've never even pumped up my air forks in 12 years and around 10,000 miles, and I bought them second hand.

Sorry, I forgot to post the link. Ebike Two Dual Battery Discharge Converter Connection Adapter 20A/30/40A/80A Double Battery Balanced Discharge withh Charge - AliExpress 18

It's probably out of balance, so might be worth opening it to check. Alternatively, check the voltage when it's fully charged. The further it's below 42.0v, the more out of balance it is. If it is a bit low, try leaving it on charge for a long time after the green light to see if it rises a bit...

If you get a donor with 26" wheels, there are plenty of cheap high quality air forks now because they've gone out of fashion. 26" wheels are better than bigger ones for hub-motors too. Air forks are great for any type of ride.

The rapidly changing technology just brings new unforseen problems. Safety and reliability comes when you make things the same for a long time, when you had a chance to see all the problems, study the causes and eliminate them. Third rule of quality: "First make them right, then make them all...

It's a double ideal diode arrangement so no power can flow from one battery to the other. It creates one-way gates. The danger of using two batteries is that if one is a higher voltage than the other, as soon as you connect them the charge will rush from the higher one to the lower with huge...

Here's a hint. The speed displayed comes from the speed sensor. It uses a calculation of pulse rate, number of magnets that cause a pulse per revolution and the wheel size setting. The actual speed limit is determined independent from that from a calculation based on the pulses the hall sensors...

That's a CANbus kit. You might as well buy a ready made bike from Halfords if that's what you want.

Neal's suggestion is the cheapest and works very well. Another solution is one of these, which allows you to keep both batteries connected. That has the slight advantage of a bit more power and the batteries get an easier time, so live a bit longer. Ebike Two Dual Battery Discharge Converter...

Waterproof doesn't help. It's air that does the damage and any vibration finishes it off.

You can set the speed limit in the LCD settings. I was talking about the natural unrestricted motor speed. My one does about 26 mph, but is fine when restricted to 15 mph.

If another spoke breaks, don't waste your time replacing it because they will all start to break. Replace or rebuild the wheel when that happens.

Do not use any of those type of connectors on an ebike. They're designed for stationary indoor use. In ebike conditions, the exposed copper will rot and break in a very short time.

The speed with the wheel off the ground depends on the motor constant (Kv). When the motor spins it becomes a generator. The voltage it generates is opposite to the battery voltage and is equal to RPM x Kv. When the motor reaches a certain RPM the net voltage is no longer enough to push the...

I don't have strong feelings about anything. I only use pragmatism. I use both types of motor regularly, so I'm in a strong position to give you the facts. It's up to you whether you use the facts. It's good that you're thinking about what information you receive. For what you want, there's not...

Brainpower controllers are normally dual mode, though the listing doesn't mention that and the picture of the label is too fuzzy to read. With one of those, you have to do the self-identification procedure to configure it before it'll work. Switch off Connect the two self ID wires Lift the...