Gionnirocket
Well-Known Unidentified Member
- Region
- USA
- City
- Y. O.
On those days I'm home riding with someone a lot more attractive and most importantly.. of the opposite sex.
Everyone has their priorities.
E-Gravel Bike…Looking for Advice
- Thread starter Cybersnow
- Start date
Everyone has their priorities.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
On a throttle.
Gionnirocket
Well-Known Unidentified Member
- Region
- USA
- City
- Y. O.
She's the one holding the throttle... and man can she go!
But you wouldn't know anything about that as you're in the mud holes with the boys. ENJOY!
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Cybersnow
Active Member
- Region
- USA
The only thing I had to fabricate is the mount for the light. I found a generic one on Amazon and modified it. The light is pretty dim but serviceable. I did take the bike out yesterday and actually had a nice ride into town. I think I will hang on to it. Maybe still hunt around for a lighter bike to take on rides where we drive to a location to ride.
Cybersnow
Active Member
- Region
- USA
I took out a couple of triangles and measured the meter against them. Both the 30 and 45 degree angles matched the meter. I also went back and remeasured the road. The hill averages between 15 and 17 degree climb.
Cybersnow
Active Member
- Region
- USA
Thanks for the morning laughs. Weather prediction for up here is several days in the 70 degree F weather. Once all the Memorial Day tourists go home, we will do a 40 miler just to see how long it takes before we get saddle sore. Luckily most of the ride is just rolling hills and relatively flat.
Gionnirocket
Well-Known Unidentified Member
- Region
- USA
- City
- Y. O.
What size chainring /rear sprocket combo did you end up with?
How are you liking the Gates Belt?
Chazmo
Well-Known Member
- Region
- USA
- City
- Central Massachusetts
Also curious about which drive system you got. As I understood it there were two options. ??
Cybersnow
Active Member
- Region
- USA
If I remember correctly I only changed the rear sprocket from a 22 to a 20. Now I can easily keep up with my wife on the road as she averages about 18mph on her Aventon rocket and it did not affect the hill climbing as I rarely get below 5th gear and most of my riding is in 11. I really like the belt drive and the rear sprocket change did not require a new belt. While the Rohloff rear axle is rated as one of the best, I am still trying to get used to it (more of an operator issue not an equipment issue).
Cybersnow
Active Member
- Region
- USA
Not sure what is offered now but the unit I purchased came with a Gates Belt and a manual shifting Rohloff axle. I understand that has changed in the 2025 model.
Gionnirocket
Well-Known Unidentified Member
- Region
- USA
- City
- Y. O.
From what I understand they did not continue with the M620 motor (was listed as limited to begin with) and now the bike comes with a Zen branded motor made by Ananda. Rohloff and Gates still there though they did mention offering the Rohloff with the eShifter
Will they offer the M620 again?.?.?
Mr. Coffee
Well-Known Member
- Region
- USA
- City
- A Demented Corner of the North Cascades
That's what I'd call a Saturday morning...
Mr. Coffee
Well-Known Member
- Region
- USA
- City
- A Demented Corner of the North Cascades
Yeah, but some of them are pretty predictable.
Most of the compute grades by sampling the elevation profile periodically. So if they sample every 100 meters they will obviously average out a steeper section shorter than 100 meters. I suspect most of them sample less frequently than every 100 meters.
I've also noticed one place all of these tools consistently overestimate grades and elevation gain is when the route goes through a deep cut, largely because the resolution of the elevation model can't capture that big hole in the ground.
Jeremy McCreary
Bought it anyway
- Region
- USA
- City
- Carlsbad, CA
I assume that these mapping apps ultimately rest on a surface mesh of discrete points from some variably vetted 3D digital elevation model (DEM) of finite resolution and vertical accuracy. To get the elevation at some point off the mesh, you have to interpolate, and this can be problematic in steep or complex topography like my own in coastal SoCal.
Guessing that a given ride profile — say, along Road Y — might include some mix of both original DEM and interpolated points. The app then samples the profile at some interval around the point of interest X to estimate the gradient at X.
No doubt there are very sophisticated ways of doing this, but still lots of opportunities for error from grade estimates built on elevation interpolations.
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Cybersnow
Active Member
- Region
- USA
I wonder if there are any light weight frames out there that are made for an M620?
BlackHand
Well-Known Member
- Region
- USA
- City
- Western WA
Dengfu makes carbon frames for Bafang drive units.
www.dengfubike.com
The real question is if they are available and reasonable in the current environment.
E14 FRAME + Motor + battery
E14 frame is an hardtail E-MTB frame, carbon fiber, equipped with Bafang motor and Dengfu battery.
www.dengfubike.com
The real question is if they are available and reasonable in the current environment.
Gionnirocket
Well-Known Unidentified Member
- Region
- USA
- City
- Y. O.
There are, Dengfu being one... but the M620 is a heavy place to start. If I was going to build something light I'd research the M560
Also the battery supplied with the Zen are massive and though great for range and minimal voltage drop, weight taxes sport.
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