series human electric hybrid recumbent bike - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 05-30-2007, 07:18 PM   #1
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
series human electric hybrid recumbent bike

Seen at Ottawa's EV Expo last weekend...


http://www.twobikes.ottawa.on.ca/sha...756-169-1d.htm


http://www.twobikes.ottawa.on.ca/sha...922-171-1d.htm

From these photos of the front, it isn't obvious, but there's no mechanical drive from the pedals to either wheel.

The builder is quite aware of the losses involved. There are several reasons for him doing it like this... I'm just not sure what they are .

Some really creative building. Like making his own sprockets for the generator belt from a plywood disk, epoxy, and a second sacrificial belt as a mold surface.
__________________

MetroMPG is offline   Reply With Quote
Old 05-30-2007, 07:21 PM   #2
Registered Member
 
omgwtfbyobbq's Avatar
 
Join Date: Jul 2006
Posts: 1,516
Country: United States
Quote:
Originally Posted by MetroMPG View Post
(Actually, he's quite aware of the losses involved. There are several reasons for him doing it like this... I'm just not sure what they are )
It's simple, no need to mess with gearing, and range is pretty much fixed based on relative speed. Anyone can put out 100W all day long, but having to deal with gearing that will result in a consistent level of optimal human powered assist at the same average speed the bike travels is kind of a pain. Very wide to say the least.
__________________

__________________
Quote:
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.
omgwtfbyobbq is offline   Reply With Quote
Old 05-30-2007, 07:22 PM   #3
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
Talk about "driving with load", eh?
MetroMPG is offline   Reply With Quote
Old 05-30-2007, 07:36 PM   #4
Registered Member
 
Join Date: Mar 2007
Posts: 1,138
Country: United States
If it were a trike and he could pedal while sitting at traffic lights and such, then that would be even better, it seems.

Is he able to do regenerative braking?

Another thing is that bikes/trikes have to be built to withstand the maximum torque that the rider will ever put on the frame, even if it is 5 or 10x the nominal load. With the hybrid, it can be engineered to handle a lower load, making the frame a little lighter, which helps make up for batteries and generators and such.
__________________
Bill in Houston is offline   Reply With Quote
Old 05-30-2007, 07:41 PM   #5
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
Regen: yes.

And his forklift motor controller is quite advanced and all its parameters are customizable to the nth degree - regen, voltage/amp limits etc.

Great idea about "idling" while stopped. The opposite of FAS?
MetroMPG is offline   Reply With Quote
Old 05-30-2007, 08:40 PM   #6
Registered Member
 
omgwtfbyobbq's Avatar
 
Join Date: Jul 2006
Posts: 1,516
Country: United States
Quote:
Originally Posted by MetroMPG View Post
Talk about "driving with load", eh?
Yup. I was thinking about the same thing, since I plan on converting my mtb to fixed/ss when the current drivetrain gives up the ghost... conditions go from nice flat asphalt and winds that are always perpendicular to going up a 5% average grade for two miles on loose sand/rocks into a 10-20mph head wind. Sufficed to say I'm gonna need a big difference in gears as well as some deep wheel dishing. Or be able to go all Lance Armstrong... but I think the first is more likely.
__________________
Quote:
Originally Posted by FormulaTwo
I think if i could get that type of FE i would have no problem driving a dildo shaped car.
omgwtfbyobbq is offline   Reply With Quote
Old 05-31-2007, 03:52 AM   #7
Registered Member
 
JanGeo's Avatar
 
Join Date: Jan 2006
Posts: 2,442
Country: United States
Send a message via Yahoo to JanGeo
How about the guy with the wheel grinder bolted to a sprocket on the front wheel and running an inverter to power it - pretty crazy but those motors run pretty fast with just a little power. I run a cheep Harbor Freight grinder off a 21 sub C cell NiMh pack for portible operation and it's great and fast enough.
JanGeo is offline   Reply With Quote
Old 05-31-2007, 05:34 AM   #8
Registered Member
 
Join Date: Mar 2007
Posts: 1,138
Country: United States
Quote:
Originally Posted by MetroMPG View Post
Great idea about "idling" while stopped. The opposite of FAS?
FNS - Forced Never Stop :-)
__________________

__________________
Bill in Houston is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuelly Android App - eehokie Fuelly Web Support and Community News 2 07-14-2010 09:59 PM
Combined totals of all my vehicles? nizationpcs Fuelly Web Support and Community News 0 03-30-2009 07:41 AM
Vehicle Notes pb Fuelly Web Support and Community News 4 10-08-2008 12:38 PM
FE improvement on the way FormulaTwo General Discussion (Off-Topic) 15 10-30-2006 07:48 PM
Just failed emissions twice Matt Timion General Maintenance and Repair 84 07-27-2006 03:19 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 11:10 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.