Electric Bikes - Pi Electric Bike
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
12-12-09, 07:07 PM
I see that no one has mentioned this electric bike.
Disclaimer: I have a friend who has invested in this company, which is how I found out about it. I don't have an opinion as to how it performs, but the design stopped me in my tracks the first time I saw one. The batteries are in the frame, and the hubs are the motors.
Here is the company website. (http://www.pimobility.com/)
Here is my photo from a bike event where a guy rode in on this one.
12-13-09, 09:33 AM
There was a discussion about these a while back, but I can't remember if it was here, on endless-sphere, or visforvoltage, or what. Basically, people were unimpressed with the structural integrity. Something about the weld points and weight distribution. From what I remember of the web site, they claim it is similar to an arched bridge with a keystone, but a bridge has the sides anchored into the ground; they are not freestanding. Seems the wheels would just splay out with weight on top and torque from the front motor. Then again, I'm not an engineer, just a science teacher. ;)
12-13-09, 10:37 AM
Unfortunately, I couldn't ever see myself purchasing a bike like that. The arch in the middle would make stepping through difficult, there's no removable battery pack, so I'd have to get the bike near an outlet, the non-traditional frame may make maintenance non-trivial (especially the crank, not sure how hard I'd want to hammer on it), and few bicycle accessories would be compatible with the frame. If I wanted a bike with an internal battery, I'd definitely go for this: http://shop.optibike.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=850Rflypage.tpl&product_id=35 A hub drive with a Rholoff Speedhub was something I'd been thinking about for a while, and the range is over double that of the Pi bike.
12-13-09, 05:03 PM
Thanks for the comments. I'm not electric bike oriented and I know nothing about them since I still provide my own motive force.
Powered by vBulletin® Version 4.1.12 Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.