olaf-lampe
10 kW
I started mentioning the idea of a linear drive here in this thread:
http://endless-sphere.com/forums/viewtopic.php?f=28&t=17847
I don't want to hijack this build log and therefor start a new thread to explain it a bit more.
Warning: This is not related to electric bikes in specific!
It's a way to be able to build a much smaller front hull to gain lower air drag. And probably a smoother torque curve than crank-pedalling offers.
I found an old drawing of the concept and I even found a linear drive I've once built for a similar project: A two cylinder boxer-motor without crankshaft.
Maybe from studying the pics you'll understand the way it works much better than from my poor explanations:
Read the comments below the pic's to get an idea.
Please don't start discussing the boxer motor. I added these pic's to demonstrate that a linear oscillating move can be turned into a constant rotation.
-Olaf
http://endless-sphere.com/forums/viewtopic.php?f=28&t=17847
I don't want to hijack this build log and therefor start a new thread to explain it a bit more.
Warning: This is not related to electric bikes in specific!
It's a way to be able to build a much smaller front hull to gain lower air drag. And probably a smoother torque curve than crank-pedalling offers.
I found an old drawing of the concept and I even found a linear drive I've once built for a similar project: A two cylinder boxer-motor without crankshaft.
Maybe from studying the pics you'll understand the way it works much better than from my poor explanations:
Read the comments below the pic's to get an idea.
Please don't start discussing the boxer motor. I added these pic's to demonstrate that a linear oscillating move can be turned into a constant rotation.
-Olaf