jbond
100 W
- Joined
- Oct 1, 2010
- Messages
- 204
Has anyone got any experience of the Cute Q-R-100SX rear motor?
I'm especially interested if there are different wind/gear options available and what to ask for. It looks to be both more powerful and lighter than the Bafang SWXH. Are there any downsides?
Some specific questions:-
- What's the difference between the 24v and 36v versions? Are they actually different?
- Does it have a planetary carrier freewheel or is the freewheel done in some other way? How does the freewheel drag compare with the recent Bafangs?
- How many gearing options are there and what are the product codes for them? bmsbattery quote lots of wheel sizes but I''m not sure if this refers mainly to the rim. The spec sheet (http://www.ecitypower.com/pdf/Q-R-100SX-Specification.pdf) seems to refer to a SN 1,2,3 with different gearing and hence max noload rpm.
- I'm planning on running this sensorless with a 10(possibly 15)AHr36v lifepo battery. What's an appropriate size of (ecrazyman) controller? 15A, 20A, 25A, higher?
- What's the low end torque like on the high rpm motors? I'm planning a 20" geared motor in a 26" (possibly 700c) rim. Will <10mph 1in10 hills just bog the motor down?
The plan is a mainly road, rigid hybrid with the ability to ride occasionally on bridlepaths and gravel tracks. Stealthy, light, and with just enough power to take the sting out of the hills. And I want to be able to keep adding some power when pedalling, gradient and wind take me over 20mph even if it won't maintain much more than 20mph on the flat under motor power alone. This led me to look for the lightest, smallest geared hub motor. The Tongxin just looked wrong to me. I like the stealth and inherent strength of a rear motor. So it's come down to the SWXH vs Q-R-100SX Did I miss another alternative? Which would you choose?
I've read the long thread from 2009 about these motors but it just confused me.
I'm especially interested if there are different wind/gear options available and what to ask for. It looks to be both more powerful and lighter than the Bafang SWXH. Are there any downsides?
Some specific questions:-
- What's the difference between the 24v and 36v versions? Are they actually different?
- Does it have a planetary carrier freewheel or is the freewheel done in some other way? How does the freewheel drag compare with the recent Bafangs?
- How many gearing options are there and what are the product codes for them? bmsbattery quote lots of wheel sizes but I''m not sure if this refers mainly to the rim. The spec sheet (http://www.ecitypower.com/pdf/Q-R-100SX-Specification.pdf) seems to refer to a SN 1,2,3 with different gearing and hence max noload rpm.
- I'm planning on running this sensorless with a 10(possibly 15)AHr36v lifepo battery. What's an appropriate size of (ecrazyman) controller? 15A, 20A, 25A, higher?
- What's the low end torque like on the high rpm motors? I'm planning a 20" geared motor in a 26" (possibly 700c) rim. Will <10mph 1in10 hills just bog the motor down?
The plan is a mainly road, rigid hybrid with the ability to ride occasionally on bridlepaths and gravel tracks. Stealthy, light, and with just enough power to take the sting out of the hills. And I want to be able to keep adding some power when pedalling, gradient and wind take me over 20mph even if it won't maintain much more than 20mph on the flat under motor power alone. This led me to look for the lightest, smallest geared hub motor. The Tongxin just looked wrong to me. I like the stealth and inherent strength of a rear motor. So it's come down to the SWXH vs Q-R-100SX Did I miss another alternative? Which would you choose?
I've read the long thread from 2009 about these motors but it just confused me.
