Ummm, folks, it's still a 350 watt hub motor, no matter what the windings but with a nice battery. A 350 watt mid drive produces more torque and power than this hub motor so its not a one-to-one match with the Izip Dash.

I don't know. The equation for power needed to propel a bike at a certain speed is mostly calculating the aerodynamic drag, which rises by 4x as speed doubles. At 28 mph, the power is around 750 watts. The speed pedelecs that Haibike is going to sell seem to have 350 watt motors. If you have 350 watts available, I'm not sure how they will get the 750 watts they need to go at the SP limit. Not too many riders can supply 400 watts for very long. A race frame would help.

When someone says they are designing a 30 mph bike, it makes a lot of sense to use a 1,000 watt motor. That is what Bafang is offering, a 1,000 watt mid-drive. It would be very easy, and pretty cheap, for JR to provide a 750 watt motor. Several things on their web page for this bike need fact checking.

At some point I think you need hydraulic disks. If you need a lot of watts to get to a high speed, you need a lot of braking power to slow down.

But, if Juiced Riders bumped the rear hub to 750 watts and their brakes are solid, their tires and wheels sturdy and reliable, etc, they have a 28 mph bike that is reasonably engineered for a very decent price. You don't need fancy electronics to make a bike that will hold up for, say, 5,000 or 10,000 without major overhauls. What do you need, if you are now going 28 mph? Does anyone know? It's unfortunate that a lot of the people with 2,000 watts and 35 mph capabilities are relatively inexperienced with bikes and bike weaknesses. Maybe there is a glaring fault with what JR is doing. Certainly Court or Ravi could do an evaluation. Why do I feel something like this would make more sense?

It would be fun to know which design path is better. Do you want a basic mid-drive like the Curry, which will probably do well on hills? Do you want motors with the raw watts to go faster? A 20 mph bike is around a 350 watt bike, but getting to 28 mph doubles the power requirement.