Hello from the Mts of Idaho

[Cybersnow]

Hi,
I live in the mountains of central Idaho. While we currently ride mostly on paved and fire roads, some of them get pretty steep and offer quite a challenge to our current 60Nm e-bikes. We are starting to look for more powerful bikes and since we don’t typically do single track full suspension is not necessary. But something over 100 Nm and step through would be perfect. Since we live over 2 hours from he nearest city, reliability and goid customer support is critical. Any suggestions are really appreciated.

 

[indianajo]

Welcome to the site.
Torque ratings are at undefined rotational speed and are rather useless IMHO. Stall torque would be important but have not seen that specification. Torque*sprocket ratio/wheel radius=force on the ground. I find wattage sort of predicts ability to climb hills, although the manufacturers quote input wattage instead of wattage delivered to the ground. I find 1000 w geared hub motors (now illegal on road in many states) climb the 12-15% hills around here effectively and 350 W do not. I've never ridden a 500 w or a 750 watt. I have a 500 w motor I bought that requires a spoke length I cannot buy to fit a 26" wheel.
With a 46 drive sprocket on a mid drive, and a 48-50 on the rear sprocket, you can start on about any hill. With that reduction, the climbing would be very slow. Not too many bikes provide an actual torque multiplication in the sprockets. Most increase only speed, decreasing the torque as you go faster.

 

[Cybersnow]

I currently have 2 ebikes. One is 750 watts and the other is 500 watts. Both are rated ay 60Nm and I can’t tell the difference between the two when climbing a steep hill. So wattage doesnt seem to matter. In looking at it, wattage seems to be input and torque the output. The fact that one is 750 and the other 50oo just tells me one is more efficient than the other. How else can you measure the ability of an e-bike to move yoy up a very steep grade?

 

[DaveMatthews]

I currently have 2 ebikes. One is 750 watts and the other is 500 watts. Both are rated ay 60Nm and I can’t tell the difference between the two when climbing a steep hill. So wattage doesnt seem to matter. In looking at it, wattage seems to be input and torque the output. The fact that one is 750 and the other 50oo just tells me one is more efficient than the other. How else can you measure the ability of an e-bike to move yoy up a very steep grade?

What percent grades are we talking about? I run a 2021 Giant Stance and 13 - 15% grades are a nothing burger. The motor is a Yamaha 70nm. What bikes do you currently run? Are they cadence sensing only?

 

[Cybersnow]

One of the bikes is a Pedago Ridge Rider with a. 750 watt motor on the rear axel and the other is av Aventon 500.3 Pace or Pacer. The fire trails and roads are typically dirt with a bit of gravel and on a regular mt bike the only way you can get up some of the steeper climbs is in the granny gear and sometimes it is about getting off the bike and just pushing it up the grade. The ridge rider is a hardtail mt bike and even in the granny gear and at max help, you can feel the burn and at 77 each year those darn grades get steeper Or maybe i am just getting older.

 

[JGcycle]

Welcome to the forum.

 

[Cybersnow]

Thanks! And Happy New Year!