Recent content by michaels

Things have evolved quite a bit. The swing arm design works really well now and I am using it on a daily basis for my short commute. It's the perfect kick to make a city commute more fun and enjoyable. Even on very hot summer days going to work means breaking no sweat. Like with any project...

After calculating the normal force I revised the mounting brakets to include end stops for the swing arm. This worked wonders and after tuning the start throttle code a bit I managed to get pretty reliable and continuous engagement and still have the drive disengage when the motor is stopped. I...

Hello Adrian! Thanks for your great work! And another special thanks for the documentation!!! I'm very interested in building something very similar and I've done the basics already. I'm still in heavy development and my current topic is keeping contact between motor and tire. Since my motor...

In response to adrian's graphical mechanics work done here for the swing arm geometry, I've done the same (with a little bit more detail) in formulae. It is interesting to see the resulting formula for the normal force that acts on the tire - this is the one that actually holds the motor on the...

Thanks Fechter for the link. Actually I've read most of the pages of Kepler's and adrian's threads. I really tried to follow the whole development process, but there are 2 main flaws, the length of the threads - it's more than overwhelming and also some topics are better documented than others...

Hi! I'm building up a very lean and low profile ebike and I wanted to get in touch and talk to people actually having some idea what they are doing - that's you! I've started from scratch and I can now say, that I can somewhat ride my ebike. Things are in the very VERY early alpha stage, as I...