Popular Science archives now searchable and free

[julesa]

All 137 years worth.

http://www.popsci.com/archives

 

[spinningmagnets]

"How to power a Bicycle with a car battery" By Roy Paayanen Oct 1970, pg 79

On one charge, a three-speed trolling motor propels my wheel at 13-mph for 40 miles. (front wheel friction drive with a single car battery in the frame triangle)

 

[Lock]

Ohhh... that's kinda fun... From April 1977... 33yrs ago:

View attachment Hub1.jpg

View attachment Hub2.jpg

 

[etard]

Nice find Lock, amazing how similar that is to todays hub motors, even down to the planetary gears. Is there torque arms, I couldn't tell?

 

[Lock]

Is there torque arms, I couldn't tell?

Hehe... not at 350W... Yer sooo 21st-century... Prob steel forks then also
L