Search results

As I said, you need to check which connector is which. You cannot go by the colour of the wires. The common mistake is to connect the speed sensor red, black and white to the throttle connector, which also has red black and white sites. The controller then can't see the speed sensor, so it...

Use a cape to protect yourself and the bike when riding in the rain. When you park up, use the cape as a bike cover. There are too many risks associated with leaving an uncovered electric bike in the rain. My advice is don't do it.

At what pressure is it boiling - atmospheric (sea level), vacuum or what? You don't get pure water out of your tap. Are we assuming that both samples are pure water?What are you using to freeze the samples. Are you talking about dropping both samples into identical freezers at -32C and seeing...

Some controllers are dual mode - sensored and sensor less. If there's a problem with the halls, they'll run sensor less. The throttle error comes when the controller detects non-zero at startup. That can happen if you have your connectors mixed up, like speed sensor connected to throttle...

Too much torque for aluminium to hold. On a non-electric bike, there is no torque on the axle, so the drop-outs aren't designed to resist the torque of an electric motor. That's why you need torque arms. When you install them, don't use the jubilee clips, which break quite easily. Instead, you...

Paratrooper is difficult to fit a battery to.

Do you mean a pint of water boiling or a vessel of 1 pint capacity with boiling water in it? What do you mean by boiling? Do you mean bubbles starting to appear or completely gasified?

36v x 15 amps is input power, not output power. At the speeds where you can get that much current into the controller, the motor has an efficiency of 60% or less, which is a max of 324w output power. That will only happen at something like 10 mph. Below that, the efficiency drops off rapidly...

What no links policy? you can can link to anything you want as long as you're not a trade member spamming us without paying the trade subscription.

Hmmm! They taught me at school that 1 litre of water weighs 1kg. That was an international standard long before they discovered science. 1 pint is 0.568261 litres, so would weigh 0.568261kg 1 pound = 0.453592kg, so 1 pint weighs 0.568261/0.453592 = 1.2528 pounds Unfortunately, I can't test...

There,s no difference in torque between a front and rear motor, but a front one can't get enough traction because there's less weight on it. You see this when going up a steep hill, which is when you need high torque and when the motor gives it. The angle forces all the weight onto the back...

It's not going to work. A front hub-motor powerful enough to get that up to 30 mph will spin the wheel whenever you start off. You'll be replacing the tyre every week.

You should never fit a motor like that in an aluminium frame without the addition of torque arms on each side.

If you watch them carefully, you'll see that the lighter riders take about six bottles from the car and stuff them up their jerseys before they start a descent so that they can keep up with the heavier guys. When they get to the bottom, they take them out and chuck them. .. and they have the...

A rear motor is definitely better, but a front hub is not a deal-breaker, especially when you have 20" wheels on a folding bike. Thousands of people have them and are happy. Try one before condemning them.

Yup, beer and Cider is OK. Try what I said, then come back and tell us how well it worked. I forgot to mention that it also makes your bike more comfortable to ride because, without the big heavy lump on the front of your body, you can lean at whatever angle you want, lift your thighs more...

You have to change the gearing, but that can be complicated with those motors. If it's a narrow one, you can use a 7 speed DNP freewheel with 11 teeth on top gear, then change the large chainwheel to at least 48 teeth. 11/48 will allow you to pedal just over 30 mph and 11/53 about 35 mph. Some...

The only way to be sure is to open it, but you can't change anything even if you find out they're not or they're fake, so try it and see how well it works. If you're only using a 15 amp controller, even a crappy battery would be OK.

You can make any bike much faster and easier to go uphill and you can increase its range substantially by making things lighter. It doesn't cost anything. All you have to do is stop eating pizzas, pies, chips, cakes, sweets and biscuits. It works pretty well on small and medium sized motorbikes too.

It's normally only the outer two slots that are connected. Before doing anything, it's absolutely imperative that you check them with a meter to find which way round they are. As a temporary measure, I've used spade connectors on a lead just poked in. You could make it more permanent by using a...