safe wrote:You're definitely on the right track with moving weight forward.
Yes, the total weight is very evenly balanced now.
It's funny that you would make an "issue" about my new project bikes weight when you're running a 25 lb hub motor on the back.
...I didn't make an issue about your new bike's weight, I just asked how much it was going to weigh since the tubes *look* very hefty but I can't reach through the screen to pick one up.
Your hub motor weighs about the same as my whole frame and fork combined. So I guess it's more about how you use the weight that you have. Having a big motor has advantages in that you can produce more power more easily, but it comes with a heavy weight disadvantage.
I'm thinking in the "perfect world" that one day someone will build a carbon fiber electric bike frame and and use a brushless motor that weighs 5 lbs (like Fechter)
Wow, I had no idea Fechter weighs only 5 lbs! That's terribly anorexic. He should see a doctor.
I'd prefer this motor to weigh less, obviously. I'm interested to hear more about the 12lb Crystalyte Canon. The smaller brushless motors like Fechter's BMC are great in and of themselves, but I appreciate the space-saving approach of a hubmotor. There's a ton of room in a bicycle hub and not much room on the frame.
On the Tour De France today they reported the average speed coming into the end of the race as being around 35-40 mph. So that's pretty much what we are competing against. The electric bike should give roughly the same or better performance to an ordinary person that an expert professional cyclist can achieve. Those racers go fast... and they ride for something like 100 miles on some sections and climb 10,000 feet all in a day. That's a tough goal to achieve... (for all our designs)
I watch bike racing occasionally. Maintaining 600 watts for hours, those athletes are amazing. But that's not nearly enough power to pedal up steep hills at the speeds of some of our bikes. At 2,500 watts, I'm carrying around the equivalent power of four Lance Armstrong's. Of course without gearing, that advantage is cut down to maybe two Lance's -- still pretty good!