amps2volts
10 µW
- Joined
- Mar 17, 2018
- Messages
- 5
Thought this would make a good discussion/debate on here. I'm building my first e-bike and can't decide what route want to take for drivetrain. Here are specs of my bike so far.
-Frame: 2009 Trek Fuel EX8 full suspension
-Motor: Mid Drive Cyclone 3Kw from Applied Future Technologies (AFT)
-Controller: Kelly 100amp limit to 60amp
-Battery: Custom Samsung INR18650-35E 51.8V nominal 14s10p
-Other: Cycle Analyst V3
I am considering a Rohloff speed hub 500/14. IGH seems to have many advantages over a rear derailleur. More reliable, lower maintenance, can use stronger single speed chains and higher gearing. But max torque of a Rohloff is 130Nm right around a Cyclone 3Kw motor. So could snap sheer pins in Rohloff. I could use CAV3 to set slow motor ramp up speed. Still sounds risky breaking pins. Another disadvantage seems be that IGH can't have any kinda load on chain when shifting.
So now starting to think a good 7 speed cassette/derailleur with a Wipperman 7E8 chain may be better option. Because seems like that can take more torque. And like 4x cheaper. But chain could wear out/break more frequently because not single speed chain.
What do you all think?
-Frame: 2009 Trek Fuel EX8 full suspension
-Motor: Mid Drive Cyclone 3Kw from Applied Future Technologies (AFT)
-Controller: Kelly 100amp limit to 60amp
-Battery: Custom Samsung INR18650-35E 51.8V nominal 14s10p
-Other: Cycle Analyst V3
I am considering a Rohloff speed hub 500/14. IGH seems to have many advantages over a rear derailleur. More reliable, lower maintenance, can use stronger single speed chains and higher gearing. But max torque of a Rohloff is 130Nm right around a Cyclone 3Kw motor. So could snap sheer pins in Rohloff. I could use CAV3 to set slow motor ramp up speed. Still sounds risky breaking pins. Another disadvantage seems be that IGH can't have any kinda load on chain when shifting.
So now starting to think a good 7 speed cassette/derailleur with a Wipperman 7E8 chain may be better option. Because seems like that can take more torque. And like 4x cheaper. But chain could wear out/break more frequently because not single speed chain.
What do you all think?