I went with electric because it`s quieter, not smelly and I can carry it up a flight of stairs. I chose the conversion kit made by Currie. Factory service is nonexistent, but EVdeals is a good, knowledgeable dealer. The motor delivers more than ½ horsepower (600W), which is plenty for a bike. Assistance is limited to about 20mph, but there is lots of midrange torque. The rear wheel is driven through an
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adapter which mates with the rear hub. I had to modify the system from the start because it was not designed to work with the fat frame tubes of my aluminum Cannondale touring bike. The kit is really geared toward steel frame mountain and hybrid bikes. I had to grind notches into the drive plate that holds the motor, gears and chain. I had to modify the battery mount. I added a voltmeter that indicates half the actual voltage (to gain a significant digit). I had to mount the throttle upside-down on the drop handle bars. Finally, I made a heat sink out of a 5x7" sheet of 1/16" aluminum. The stock setup is considered prone to overheating. I loosely bolted the propulsion unit to the rear wheel of my Cannondale T-400 touring bike and tried to install it on the frame. All the frame tubes are larger, being aluminum. So the propulsion unit went against the chain stays. I ground a couple of notches into the propulsion unit to make clearance. It still touches the chain stays and I hope it won`t be a problem. The hose clamp for the torque arm barely made it around the fat chain stay. I mounted the throttle upside down on the top of my drop handlebars. I used some black duct tape to cover the openings. I work the throttle by pulling it up with my index and middle finger. It`s quite comfortable. The battery mounting scheme wouldn`t fit in the frame triangle, again because of the fat frame tubes. So I opened up the battery box and...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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