John Tolhurst
Zen MBB Master
Can anyone suggest how a bionx might go on a freerider or sofrider?
Bionx adaptation
- Thread starter JonB
- Start date
Check out this one: http://www.alysion.org/ebiketours/etrek.html
The idea being to avoid all interference between pedal powered and electric powered wheel, which can allow for geared electric assist motors to make them more efficient.
Installation on the Bionx looks fairly straight forward. Just need to make sure you have the spacing right on the rear fork. JonB's link says that they include the thumb throttle with all kits, so even if the thing wants to set a speed based on your pedal effort, you can use the thumb throttle to override that and zoom, zoom, zoom.
My problem with electric systems is that I'd have to install a fairing and concealed switch. So when the cop stops me, I can run it just on electric right below 20mph (no need for tag or license at that speed, it is a bike, not a motor vehicle) and explain away higher speeds with my pedaling skillz. :lol:
echo_anomie
New Member
Performance wise or installation?
At 36v, expect maybe 28-30 k/hr in a 26" wheel.
Personally that's a bit slow for me, but nice for hills and headwinds.
The bionx seems like a nice little system - I like the adjustable human/motor input.
Hey don't forget I'm in Perth - you can test ride my set up if you want (as long as I get to ride a silvio)
At 36v, expect maybe 28-30 k/hr in a 26" wheel.
Personally that's a bit slow for me, but nice for hills and headwinds.
The bionx seems like a nice little system - I like the adjustable human/motor input.
Hey don't forget I'm in Perth - you can test ride my set up if you want (as long as I get to ride a silvio)
What I like about the Freerider/Sofrider is that they would work very well for e-assist if one chooses. Personally, I wouldn't want to put a hub motor in the front drive wheel. I fear the added weight and strength of the dropouts. Now driving the rear wheel is another matter. The dropouts are much stronger for a hub motor and it's an interesting thought to add a proper rear wheel with a cog set, second shifter and drive it via a smaller motor though the back chain to the rear wheel. This would result in a nicer lighter system then a hub motor. On the negative side it would be harder to install. For me the benefits are you would also have the ability to change gears without the same worries of a traditional chain drive system, such as pedal cadence. I could see having a sub 10 lbs system including batteries that freewheels when not in use. Of course knowing myself I'd be motoring along quite a bit. :mrgreen:
echo_anomie
New Member
Chain drives are very efficient, but, in my experience, a lot more maintenance to deal with.
More at: http://www.flickr.com/photos/39342780@N00/sets/72157594349507671/with/387782883/
More at: http://www.flickr.com/photos/39342780@N00/sets/72157594349507671/with/387782883/
With out a doubt they're more maintenance. They're also generally lighter and as you say more efficient. However, with the Cruzbike FR/SR you'd have two independent drive systems as long as you're driving the rear wheel with the motor. I could see myself with a chain drive system with an Sram Dual Drive or an eight speed internal drive. I'm thinking along the lines of a Cyclone drive system minus the cranks. http://www.cyclone-usa.com/
Because I'm tall..........I have been thinking that a Montague folder would make a great fwd bike as long as the balance point was'nt too high. Drop in an electic assist and you could have a real hill climbing monster. A folding concept bike and Johns kit just seem to go togeater. That's the thing about the fwd bike..............you can have a lot more ideas pop up because of the design. On the regular cruzbike you might think of mounting the battery on the back end of the seat post. I know weight might be a problem..........just a thought.
Moose
Moose
