Bosch CX Range Determined

[Alaskan]

I went for a ride yesterday on the Centennial Trail in Western Washington State. It is east of Interstate 5 on an old railroad bed that has been paved over about 18 feet wide. It runs from south Skagit County down through Arlington, Lake Stevens to Snohomish and covers about 35 miles and then ties into the Burke Gillman Trail which takes you by the University of Washington and through the Ballard neighborhood of Seattle and ending at Shilshole Bay on Puget Sound.

It is mostly flat with gentle grades running mostly through second growth forest and fields. Where it runs through towns, it is well marked and still quite wide. People consistently stopped to let me cross even when they had right of way.

I started at the north end of the trail and rode south for 22 miles and then headed back north to my car. I rode with an extra battery so I could ride till the battery quit. I almost made the 44.75 mile round trip on one battery with the battery running out at 43.4 miles.

Key stats:

Bike: Riese & Muller Nevo Nuvinci GH (with Bikespeed RS dongle)
Weight: Bike 77 lbs.
Rider: weight 208 lbs.
Drive System: Nuvinci 380 with Gates Belt Drive
Elevation Gain/Loss: 837/801
Average Cadence: 76
Average Speed: 16.8
Average Rider Power Output: 111 watts
Power Output Rider: 40% - Engine 60%
Assist Modes: Eco 10% - Tour 66% - EMTB 23% - Turbo 1%
Battery range: 43.4 miles
Watts per Mile: 11.52
Battery percentage per mile: 2.3%

 

[rich c]

Nice stats, but curious why you say the range is determined? You used different modes of PAS throughout the ride. Use one of those modes 10% less and you effect the range, maybe considerably if you use the eco mode 10% more. I don't fixate on range any more, it is what it is, especially if I make it home with some battery left. Way too many variables to say you now know the range of the battery.

 

[Saratoga Dave]

Holy cow, 77 pounds? Is that loaded with stuff or does the GH version weight that much more? I thought these things were in the low 60s.

 

[Alaskan]

Nice stats, but curious why you say the range is determined? You used different modes of PAS throughout the ride. Use one of those modes 10% less and you effect the range, maybe considerably if you use the eco mode 10% more. I don't fixate on range any more, it is what it is, especially if I make it home with some battery left. Way too many variables to say you now know the range of the battery.

I was not trying to determine maximum possible range but rather approximate maximum range under normal riding conditions using assorted assist levels. What this trip did not factor in was frequent stops and starts with the acceleration factor which uses lots of power.

 

[Alaskan]

Holy cow, 77 pounds? Is that loaded with stuff or does the GH version weight that much more? I thought these things were in the low 60s.

The bike is 62 lbs. from the factory. Then add in the chain, extra battery, handlebar bag, full water bottle, tire kit, assorted tools, trunk bag, mirror, bluetooth speaker, etc. I guesstimated around 15 lbs of extras

 

[tallpaul]

What a beautiful Trail. Just what i have been looking for down here in San Diego. Maybe someday I'll load the bike up and head north!
Glad to see you loving' the R&M. 44 miles on one battery is good! I see that it was 40% of your body power that helped get you to that stat. Gotta love the Nyon for providing the info! Encourages me to use more pedal power when I can.