Recent content by perbear

Norway is way ahead on the electric car user side due to: 100% renewable electric power Political pressure to reduce GHG emissions and with no big thermal power plants, transport is a huge CO2 source Cars are heavy taxed based on weight & emissions. Making BEVs tax except gave them a...

Do you have pictures of the brake sensor?

I think these battery packs are suitable for our velomobile but I have not found data on charging. As we use regeneration on our bike that is quite important. What is the charge rating of the 36V LiGo, peak and continous?

Maybe something like this one? http://www.podbike.com

And try to print it with a 3D printer in strong material. Then you can make herringbone style gears...

I think it is fair result. Remember you get a lot of drag exposing the front wheels, and if your vehicle profile results in lift (or downforce) it will result in extra drag. I used the OpenFOAM based Caedium (http://www.symscape.com/node/1082) and it gave 11 N in drag at 10 m/s for my...

Nice and impressive works! Have you considered buying premade seats? Alligt, NL sells a nice injection molded recumbent seat with two different glass fibre grades, PA6-GF30 and PA6-GF40: http://alligt.nl/afbeeldingen/100_2268.JPG The best thing is that a 3D CAD model of the seat can be found...

Impressive, I really hope you get it to work well, it is very useful for velombiles! :) The Delft HPV team used such a drive in the VeloX 2: They complained about lower efficiency and that it was a fragile construction...

Low noise and mass is important for a series hybrid type pedal generator. Next year I shall build a series hybrid velomobil. This is my plan for the pedal generator: 1) Use a small hub motor with low noise. I plan to use Cute Q85 (1.7 kg) which is probably large enough. 2) Since these hub...

Grin Technologies (ebikes.ca) has put Cute Q100 with 328 RPM winding thru their motor test stand. The result was used to define a cute Q100 motor model for their ebike simulator. So it is easy to find the approximate ebike performance using this motor before you build. Pretty neat for anyone...

Yes, in the EU all electronic devices connected to mains and consuming more than 75W need to comply to the standard EN 61000-3-2: Electromagnetic compatibility (EMC) Limits. Limits for harmonic current emissions (equipment input current ≤ 16 A per phase) With a suitable PFC harmonic current...

I see from the pictures that on the charger cover you have puts both C and US certifications plus a CE mark indicating compliance to European safety legislation. What EN standards have you planned to comply to? It would be nice if you cover enough to fulfil the charger requirements in EN 15194 -...

Fortunately, they have now three different rear motors on offer, one for roller brakes, one for V-brakes and one for disc brakes: http://www.keyde.com/?do=product&lang=en&event=view&ids=12

That's a pretty political.../quote] With the exception of tailor made target shooting firearms this is an exact observation independent of political view. In Norway it is fairly easy to aquire firearms as long as you have an acceptable reason for use (hunting, law enforcement, organized target...

I have Q85 front motor without rim/spokes. The weight on my IKEA scale is 1.72 kg. This is the narrow unit for rim brakes only.