CONEBI S Pedelec testing - report Jan 2015

[shemozzle999]

http://www.conebi.eu/?wpdmdl=251

 

[flecc]

Thanks Shemozzle. With just one mention only of L1e-A, this seems to primarily concern the S class speed pedelecs with the L1e-B Moped classification.

The two mentions of the four times ratio of motor to human power limitation and confirmation of it's reasonableness once again demonstrates that there is no possibility of independent throttles ever being accepted, even in the high speed class of e-bikes. The principle of measurement of rider input switching on and setting power is too deeply embedded in EU thinking and law.
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[anotherkiwi]

I have had this file for quite a while. Of interest is the failure of trekking bike components to pass stress testing. If you are building an s-pedelec use MTB components!

Interesting document.

 

[shemozzle999]

Thanks Shemozzle. With just one mention only of L1e-A, this seems to primarily concern the S class speed pedelecs with the L1e-B Moped classification.

The two mentions of the four times ratio of motor to human power limitation and confirmation of it's reasonableness once again demonstrates that there is no possibility of independent throttles ever being accepted, even in the high speed class of e-bikes. The principle of measurement of rider input switching on and setting power is too deeply embedded in EU thinking and law.
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Yes, it appears that powered cyclists cannot be trusted with a throttle and can expect to have problems controlling the bicycle in certain conditions if they are allowed to much power whereas car drivers, motorcyclists and moped riders do not seem to suffer with this lack of competence?

 

[flecc]

Yes, it appears that powered cyclists cannot be trusted with a throttle and can expect to have problems controlling the bicycle in certain conditions if they are allowed to much power whereas car drivers, motorcyclists and moped riders do not seem to suffer with this lack of competence?

Of course the S pedelec riders can have a throttle up to 12 mph so have that advantage over riders of standard pedelecs. But on the other hand, they have more restrictions and conditions of use and are threatened with more:

Currently the EU commisssion have been trying to introduce enforcement for the wearing of full face helmets for L1e-B mopeds including the S class and I can foresee a driving licence being necessary shortly. The latest change in licences I think makes this more likely.

From this January 1st a Q group driving licence is now necessary for the 25 kph L1e-A class bike but none for the 45 kph S class, while the 45 kph mopeds require a group AM licence. I cannot see the irrationality of this position escaping attention much longer.
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[shemozzle999]

I also wonder if their operating concerns may have been highlighted by the pulsing effect of the motors due to torque control power delivery.

With continuous smooth throttle control the motor will apply a lower constant power, say when hill climbing, whereas with torque control the motor has to peak at higher levels - could be the cause of the current mechanical failures on another thread.

 

[flecc]

With continuous smooth throttle control the motor will apply a lower constant power, say when hill climbing, whereas with torque control the motor has to peak at higher levels - could be the cause of the current mechanical failures on another thread.

That's a good point, though I think in the Kalkhoff case they were probably going too far for the small profile toothed nylon gear in a torque and power race with Bosch. The power peaks due to the torque sensor action will certainly have hastened the end.

Heinzmann sensibly only fit a nylon gear in their lowest powered standard 200/250 watt internally geared motors, all the higher rated ones have steel gears.
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