Intellibike info?

[Lowell]

18Wh/km @ 66km/h. Does that make a hub motor the most efficient ebike drivetrain around? They claim 96% efficiency...

Does anyone have any other good info on this bike?

http://www.e-mobile.ch/index.php?pid=en,2,2,7

Google Translate Link

 

[knightmb]

No good info, but since it said it's limited 1000W of power with a top speed of 100 Kph (or a little over 62 MPH), I think we all can tell just by looking at the bike and our experience that things may have been exaggerated just a little. Safe has worked out that with some smart gearing, efficient motor, and more aerodynamic design, it's possible.

The thing is, I don't think bike is geared high enough for a human to pedal it over 100 kph, at least by looking at the pictures. My e-bike has been customized by the local bike shop to top out at 35 MPH which took a very large front sprocket and very tiny back sprocket. The e-bike pictured look like mine and probably tops out at 35 MPH pedal wise. I don't know if the motor will push it to 60 MPH or not with only 1,000 watts of power. It's certainly no more aero better than my e-bike, nearly the same setup except maybe it weights less? If I had to hazard a guess, it's top speed is probably closer to 35 to 40 MPH.

 

[Lowell]

66km/h is easy to believe, but I think 100km/h would have to be going downhill. Or it could be the 1000W figure is not totally accurate.

 

[Toorbough ULL-Zeveigh]

<A HREF="http://www.canosoarus.com/08LSRbicycle/LSR%20Bike01.htm">152.2 mph</A> on pedal only while drafting. Just shows to go that you don't need a lotta watts when you don't have to push air.

There's also a guy in Toronto that I've been trying to find his website who is using the 401 as his test track for an HPV streamliner that was getting around 100 kph. It took like four miles to build up the momentum because he only had the one gear to reduce the weight. However there is only so much you can do to an upright to get the drag down, so I'm just a tad skeptical but would be interested in finding out more about the Intellibike's aero properties.

The Intellibike looks like it borrowed heavily its monocougue design on the <A HREF="http://www.lunt.demon.co.uk/bike.htm">Lotus bike</A> that Chris Boardman won Olympic gold with, so its aerodynamics is about as good as it gets. When Lotus did windtunnel testing during its design they found that minor tweaks in both the frame geometry & the rider's position resulted in huge swings in drag & fine tuning was necessary to take the bike from uncompetative to golden. The fact that the UCI has since outlawed both the monocougue & the superman riding position tells me all I need to know. Just like with the recumbents, the bike's too damn good & a threat to the sport.

 

[Miles]

http://www.bikereader.com/contributors/woodland/murphy.html 8)

 

[knightmb]

<A HREF="http://www.canosoarus.com/08LSRbicycle/LSR%20Bike01.htm">152.2 mph</A> on pedal only while drafting. Just shows to go that you don't need a lotta watts when you don't have to push air.

It is interesting, but when you remove air friction, it's no different that sitting on a pedal exercise bike and spinning the wheel to 152 MPH. The only thing different is the understanding of physics, in which case those that don't understand will think of it as impressive or impossible. Not to undermine what he did, if he had taken a fall at that speed it would have killed him, so he certainly was a brave person.

The Intellibike looks like it borrowed heavily its monocougue design on the <A HREF="http://www.lunt.demon.co.uk/bike.htm">Lotus bike</A> that Chris Boardman won Olympic gold with, so its aerodynamics is about as good as it gets. When Lotus did windtunnel testing during its design they found that minor tweaks in both the frame geometry & the rider's position resulted in huge swings in drag & fine tuning was necessary to take the bike from uncompetative to golden. The fact that the UCI has since outlawed both the monocougue & the superman riding position tells me all I need to know. Just like with the recumbents, the bike's too damn good & a threat to the sport.

I agree, the bike can make a huge difference in power usage and the Intellibike looks very streamlined, but still given how the rider is not streamlined and the power is limited to 1,000 watts I would need to see a video of someone riding the e-bike that fast first. You know how we are, we believe it when we see it.

 

[Geebee]

No good info, but since it said it's limited 1000W of power with a top speed of 100 Kph (or a little over 62 MPH), I think we all can tell just by looking at the bike and our experience that things may have been exaggerated just a little. Safe has worked out that with some smart gearing, efficient motor, and more aerodynamic design, it's possible.

The thing is, I don't think bike is geared high enough for a human to pedal it over 100 kph, at least by looking at the pictures. My e-bike has been customized by the local bike shop to top out at 35 MPH which took a very large front sprocket and very tiny back sprocket. The e-bike pictured look like mine and probably tops out at 35 MPH pedal wise. I don't know if the motor will push it to 60 MPH or not with only 1,000 watts of power. It's certainly no more aero better than my e-bike, nearly the same setup except maybe it weights less? If I had to hazard a guess, it's top speed is probably closer to 35 to 40 MPH.

Don't be so sure on the gearing bit (although the speeds sound dodgy), my trike runs a 44 tooth front ring and a small rear of 9 tooth on a 16" wheel (349 wheel a big 16") and I can pedal at 40 mph, so with a 26" wheel and a big front sprocket?
Oh and Green Speed can provide ludicously large front rings.

 

[Miles]

Up to 75t chainrings (tandwielen) available here

 

[Geebee]

Greenspeed do an 80 tooth off the shelf and from memory higher as custom.
The price is scary though $240.00 au.

 

[Miles]

Greenspeed do an 80 tooth off the shelf

Thanks, Geebee. I missed those when I first looked at the site.

Combining the 2 ranges, we have quite a good selection between 52t and 80t. The Alligt ones are more affordable, though...

 

[Geebee]

Just a quick calculation 80 tooth up front and a 9 tooth rear at 90 rpm =99.6kph.
Since I can sprint at 180 rpm that means I can ride at a hair under 200 kph
Now all I need is a vacuum, an air tank and a very good push start and I am set. :lol:

In case your wondering the Shimano Capreo has a 9 tooth small cog.

 

[xyster]

Now all I need is a vacuum, an air tank and a very good push start and I am set.

Or a long slight decline...