SURVEY: Your watts at various speeds

[Marc S.]

Watts at:
20km/h - 62W - 3.1Wh/km
30km/h - 98W - 3.3Wh/km
40km/h - 152W - 3.8Wh/km
50km/h - 208W - 4.2Wh/km
60km/h - 323W - 5.4Wh/km
70km/h - 441W - 6.3Wh/km
80km/h - 563W - 7.0Wh/km
90km/h - 731W - 8.1Wh/km

With 75W of human power it looks like this:
30km/h - 23W - 0.8Wh/km
40km/h - 60W - 1.5Wh/km
50km/h - 150W - 3.0Wh/km
60km/h - 216W - 3.6Wh/km
70km/h - 360W - 4.8Wh/km
80km/h - 497W - 6.2Wh/km
90km/h - 654W - 7.3Wh/km

I used the Motor Simulator to calculate these figures, but its pretty close to the figures on my CAv3 at these speeds.
In city traffic with frequent stop and go, consumption can easily go up to 12Wh/km when riding at around 50km/h.

Milan GT Mk2 velomobile with hood: CdA 0.04 (Räderwerk measured 0.0368 in 'race trim', without mirrors and closed visor)
Motor: Bafang CST code 10 in 26" rim
Motor controller: Phaserunner v1
Battery: two older 10s/10p Sony Konion US18650v3 packs (about 1.3kWh capacity)
Charger: two Satiator 4808
Lights: Highsider Dual Stream, Kellermann Bullet 1000 (rear/brake/indicator lights), consumes 20W
Gears: Patterson Metropolis 2-speed, 42t chainring (67t in overdrive), 9-speed Shimano 105, 11-36t cassette
Brakes: water-cooled 90mm Sturmey Archer drum brakes at the front, 160mm brake disk at the rear
Tires: Maxxis DTH 39-406 at the front, Schwalbe Big Ben 50-559 at the rear

 

[Cephalotus]

The Milan numbers are very cool.

Sadly a legal 45km/h version is not available.

Direct drive with regen would be preferable imho to use regenerative braking and for less noise inside this hull and for the option to move backwards using the motor drive.
But a DD limited to 25km/h with motor drag above 25km/h does not sound attractive to me....

 

[Marc S.]

Yeah, I've got a MXUS 3005RC DD hub 'just in case' waiting to get laced-up, but I'm still not entirely sure if it finds its way into the Milan. The new features of the Phaserunner could take care of the motor drag, though. I'll have to see how the Bafang CST will hold-up on my new commute.

 

[Marshall2389]

50 kph: 50 watts
60 kph: 150 watts
70 kph: 300 watts

Katanga WAW velomobile with Bafang BBS01b mid drive assist

 

[Marc S.]

The Milan got updated with a MXUS 3005 RC in 26" rim, custom 11-42t 10-speed cassette, 45/72t chain rings, a new 20s/2.3kWh battery made from 21700 5000mAh cells and is shot with reasonably quick Conti Contact Urban*.

Real world numbers from the CAv3 at 8°C on open country roads from city to city with light traffic:
-at ø61,8km/h it consumed 0.996Wh/100km (130km distance, max 1.5kW, respecting speed limits, max 93.1km/h)
switching batteries, racing back:
-at ø68.3km/h it consumed 1.32kWh/100km (120km distance, max 2.5kW, not respecting speed limits, max 98.3km/h)

Overall: 249.8km distance, ø63.7km/h average, consumption 2,878Wh, or 11.5Wh/km (about 1,767 MPGe)

*the Conti Contact Urban have great wet grip, though

 

[riding_on]

How much power do you use, cruising on the flats?

You don't need to provide figures for all speeds, but more entries are better...

Watts at:
10mph -
15mph -
20mph -
25mph -
30mph -
35mph -
40mph -
45mph -
50mph -
>50mph -

29" wheels; 3000 watt rear hub motor (direct drive I believe, but don't quote me on it); 72v 40AH 80amp nominal LiFePO4 battery and 80 amp controller; I don't have specifics, but 15-25 watts/mi if I keep it under ~30MPH. At ~50+mph (private property), it's as high as 40-50 watts/mi.

 

[Hillhater]

I thought the OP was asking for actual power (Watts) at specific speeds, …on the flat, no pedaling.…..
…..not Wh/km, Wh/ mile, or kWh/100 km …which are all averages ?
and little point in measuring if there is any pedaling at all !
very difficult to compare if you dont use same units.

 

[riding_on]

I thought the OP was asking for actual power (Watts) at specific speeds, …on the flat, no pedaling.…..
…..not Wh/km, Wh/ mile, or kWh/100 km …which are all averages ?
and little point in measuring if there is any pedaling at all !
very difficult to compare if you dont use same units.

Well, just another example of me providing useless, superfluous information then. I don't have numbers for that.