New Gen 4 Levo is a comin'...

[Base]

the complete "swatt" battery compartment

 

[Ebikelife72]

This is a great looking bike. As a total package I’d take this over the Amflow/DJI.

 

[Rás Cnoic]

 

[Marcela]

Where's the standard to rate these motors? Spec can come up with however they want to rate it, at the axle, chainring, pedals?

 

[Stefan Mikes]

Where's the standard to rate these motors? Spec can come up with however they want to rate it, at the axle, chainring, pedals?

The mechanical peak power is the only figure to consider, because almost all is transferred to the rear wheel. The torque value is given at the motor spindle but the reference angular speed was not given.

 

[Rás Cnoic]

Same motor rating standards as all mid drive motors whether Specialized/Brose, Bosch, SyncDrive Giant/Yamaha, Amflow/Dji or Brose/SRAM etc etc.

 

[Marcela]

Same motor rating standards as all mid drive motors whether Specialized/Brose, Bosch, SyncDrive Giant/Yamaha, Amflow/Dji or Brose/SRAM etc etc.

And what is that standard?

 

[Stefan Mikes]

I wonder who manufactures these exclusive motors for Specialized...

 

[Rás Cnoic]

I wonder who manufactures these exclusive motors for Specialized...

Still Brose apparently. How that will sit in future with their new Yamaha overlords will be interesting.

 

[Rás Cnoic]

And what is that standard?

I have no idea.

 

[Base]

in the review they mention Brose.

different sources say Brose


https://cdn.jwplayer.com/previews/B4dTiszi

 

[Base]

I do like the cable routing behind the battery

 

[Ebikelife72]

It's weird. I've read in places that Mahle were making this motor.

 

[mschwett]

Where's the standard to rate these motors? Spec can come up with however they want to rate it, at the axle, chainring, pedals?

there would be no meaningful difference between the axle and chainring - the effort of spinning a lightweight metal ring isn’t going to even be measurable. there’s also a clutch in these motors between the cranks and the axle (otherwise you’d get the sensation of the motor turning the pedals while you were trying to pedal) so measuring at the pedals wouldn’t make any sense either.

in short …. torque would be measured at the motor axle. power is a more complicated question.

 

[Stefan Mikes]

I'm tremendously impressed after having watched the EMBN demonstration. I am so happy to realise I am not a mountain biker, or I would be sick from the desire to buy one!

The technical stuff about "assistance dynamics" was beyond my comprehension I could only understand how refined the system has been, and how deep Specialized went into the tiniest things important on the technical singletrack. (Now, I think AMFLOW/DJI didn't have as much experience as to develop as refined stuff as Specialized).

The only thing I hated was the new handlebar remote as I had tried it on a Vado SL 2, and was not impressed at all.
------------
Now, I do not trust the torque values specified; I trust the rated max motor power.
Power = Torque * angular speed.

S-Works: 720 W / 111 Nm = 6.486 rad/s = 61.9 rpm
Spcialized: 666 W / 101 Nm = 6.594 rad/s = 62.9 rpm.

I am sure the marketing department has manipulated the torque figures to show the new motor was as good as DJI Avinox... They could have used the standard 6.28 rad/s (60 rpm) to leave no doubt.

 

[Base]

indeed remote is not my cup of thee

 

[linklemming]

 

[BlackHand]

Now, I do not trust the torque values specified; I trust the rated max motor power.
Power = Torque * angular speed.

S-Works: 720 W / 111 Nm = 6.486 rad/s = 61.9 rpm
Spcialized: 666 W / 101 Nm = 6.594 rad/s = 62.9 rpm.

I am sure the marketing department has manipulated the torque figures to show the new motor was as good as DJI Avinox... They could have used the standard 6.28 rad/s (60 rpm) to leave no doubt.

The Brose Drive3 Peak upon which this seems to be based is specified at 600W peak and 95Nm which pretty much matches your 6.28 rad/s assuming they round to nice even numbers.

 

[Stefan Mikes]

The Brose Drive3 Peak upon which this seems to be based is specified at 600W peak and 95Nm which pretty much matches your 6.28 rad/s assuming they round to nice even numbers.

Specialized could have overdriven these motors and the data would look like:

• S-Works 3.1: 720 W or 114 Nm
• Specialized 3.1: 666 W or 106 Nm.

However, we might assume the 111 and 101 Nm figures being right, which would indicate 697 and 634 W, respectively. Not too impressive. We don't know how the marketing department works... One thing is sure: the advertised figures should not be worse than for DJI Avinox!

 

[Stefan Mikes]

Besides...
The merriest scene in the EMBN video is the one when Steve Jones starts the stopwatch and the Swiss guy runs to the Levo to remove the battery
(Well, it takes two seconds on the Vado)