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Conclusion My goal is to optimize sub-20mph pedaling. The 1500W, 27A, 54V controller can be downgraded to meet the CA 1000W limit. The amp-to-volt ratio would increase to 0.73, which I consider the ideal ratio. BBS02 Pedal Assist System (PAS) settings can be configured downwards from 1500W to...

Which motor best suits your riding style? Is it possible that a simple switch can convert the same bike from a legal 20mph "bicycle" to a 40+ mph motorcycle? Yes. Four Crystalyte rear hub motors are compared to illustrate the relationship between power(W), speed(mph), torque(Nm), volts(V) and...

We are simply very different people that happen to be converging on the same idea. Our viewpoints are not conflicting in this case.

I research and write articles in fits-and-starts, as my spare time permits. Writing an article usually takes one full week. So, check back regularly. To discuss related topics of a personal nature, please join the conversation.

I want to go into motor power more deeply here. I want to explore how motor power contributes to chainring damage. I wonder if volts or amps contribute to chainring wear. Higher volts result in higher RPMs. Greater amperage means more power flowing through the wires surrounding the magnets. You...

By "pro deal", I mean prices were manipulated -- an apparent double standard. If you had a connection, you received a huge discount, regardless of your ability. People resented the price manipulation. Consumers repsonded most favorably to the manufacturers who presented the lowest overall cost...

I was heavily into kitesurfing until I split the menincus in my knee in half in a sparring accident. Kitesurfing is very expensive. Very difficult to make money in the industry. The irony is the companies that transparently and aggressively brought prices as low as possible seemed to do best...

I plan to buy a custom bike from HPC in LA, CA. My strategy is to buy the most reliable components. I figure I am on my own, so order the components with best reputation and warranty. I will pay a big premium, but I minimize risk. I start with a simple, flexible, rugged frame. I overbuild a bike...

Polaris is solid. They can accomplish whatever they set their minds to. What do you think of the bike I am selecting? The 6000 watt motor option is capable of over 60mph. Scroll to last post...

From what you describe about yourself, you might want to consider the actual engineering forces, rather than brand features. It appears to me that you underestimate. My reasoning is explained here.

In the previous post, I touched on the Gates sprockets. My goal is the Highest gear ratio possible in IGH to facilitate pedaling the largest chainring my legs can tolerate. Rely on motor to power me through low speeds with over-sized chainring. Speeds over 20mph only from leg power with...

Fantastic! Have you seen videos of them on racetracks? The speed is hard to believe!

I have been in contact with HPC. They will release a 1000W Sm-Co mid-drive that is more powerful than neodymium, soon. I am definitely going with rohloff. Need to consider gates belt cost. I am biased against chain-Suck.

I found technical details that you might find helpful. http://electricbikereview.com/community/posts/20517/

I found technical details that you might find helpful. http://electricbikereview.com/community/posts/20517/

I found technical details that you might find helpful. http://electricbikereview.com/community/posts/20517/

I choose the Rohloff-14 Internally Geared Hub (IGH) and chain for my custom bike. Substituting sprockets (i.e., rear gear cassette) for gears is a fundamental leap of faith. I am very reluctant to apply motor power to a bicycle wheel with sprockets. (Link Removed - No Longer Exists) To my...

I found a lot of info that might help explain chain stuck by mud : http://electricbikereview.com/community/threads/cost-benefit-comparison-electric-bike-chains-and-belts.1839/

Useful automatic chain lube concept. "How can you check when your chain should be replaced? The standard formula is that your chain should be replaced when it has been stretched more than 0.1mm per link. With the chain wear indicator Rohloff Caliber 2 you can check with one glance whether it...

Chain links pulled around the chainring can be stressed to unimaginable levels (300kg per square mm) which create microscopic gaps (0.1mm) in the chain links. Recall when accelerating very hard that the entire bike force is directly centered on the forward most chain link. To appreciate the...