Kent wrote:John thats a great looking machine and I know it kicks ass. But do you find that with a load hanging off the back like that it makes the front end light and prone to wheelies?
Thanks for the kind words. No, the front isn't light, because the CG is too low and forward. With a heavy load in back like that sack it's a bit wiggly, so I move a bit more forward on the seat and more upright to keep the load under control. Some of that has to do with me being clueless when I built her, and some torsional flex is the result. Her replacement will have very similar lines, but will be lighter, yet stronger and more rigid. I'll also shorten the front just enough that I don't need the reversed stem. People always want to turn the handlebars around to what they think is right. I don't know how a cable never got broken.
I'll reduce the trail just a tad too. When I first built it, the head tube was much steeper from the mountain bike frame donor, and the steering was too sensitive, especially with weight forward like in a tuck on the highway. I hacked off the front and put some slack in the head tube angle, but I went a little too far putting the trail at nearly 4". At speed she tracks like on rails, but very low speed handling suffers, nothing terrible but room for improvement.
Her successor will get the identical motor, but 2 of them for 2wd, and the 17" moto rims instead of the 14" on her now. That ends up 24" OD wheels instead of 20" on the back now. Add in more attention to aero instead of all those protrusions out in the wind and Blue V2.0 should be close to a 70mph ebike on just 20s, but still have better hill climbing. There's a few climbs where grades push past 15% that she can't quite tackle.