SWX02 to Q128h

oldie1982

Finding my (electric) wheels
Jul 16, 2020
9
0
Hi guys

I currently have a wooshbikes SWX02 kit fitted to my bike. Happy with it, no issues. Motor is currently mounted on a 700c rim.

What i would like to do is get a 27.5 rim with a motor so i can have more tyre clearance.

The kit i have has the following...

Lishui 48V 17 Amps sine-wave controller
48V 12AH HL downtube battery with Samsung 18650-29E cells

I want to keep everything as it is but have a 27.5 wheel with a rear hub motor.

I was thinking a Q128H 36v 201 rpm.

I understand at 48v and with a 17amp controller this would give me good torque levels.

I want to be able to swap wheels and just plug in the connectors.

What are my choices in regards to plug and play hub motors to fit with my current kit?

Any suggestions appreciated.

Thanks
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
15,137
5,889
58
West Sx RH

oldie1982

Finding my (electric) wheels
Jul 16, 2020
9
0
Much appreciated Nealh.

Only reason I was considering the 36v motor was of a few threads i read. 36v hub powered by 48v would be 33% faster overall. Torque and speed.

For off road use a bit higher top speed would be good. My current swxo2 tops out at 18mph.

The steepest hill i have around here is 10% at its worst. Probably half a mile long in total. My current swx02 has no problems with this.

Thanks
 

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,822
3,945
Basildon
Hi guys

I currently have a wooshbikes SWX02 kit fitted to my bike. Happy with it, no issues. Motor is currently mounted on a 700c rim.

What i would like to do is get a 27.5 rim with a motor so i can have more tyre clearance.

The kit i have has the following...

Lishui 48V 17 Amps sine-wave controller
48V 12AH HL downtube battery with Samsung 18650-29E cells

I want to keep everything as it is but have a 27.5 wheel with a rear hub motor.

I was thinking a Q128H 36v 201 rpm.

I understand at 48v and with a 17amp controller this would give me good torque levels.

I want to be able to swap wheels and just plug in the connectors.

What are my choices in regards to plug and play hub motors to fit with my current kit?

Any suggestions appreciated.

Thanks
You can't trust the speeds from BMSBattery. The 201 rpm Q128C was always 260 rpm. I'm not sure about the Q128H. You might find that at 48v your "201 rpm" motor does 328 rpm.
 

oldie1982

Finding my (electric) wheels
Jul 16, 2020
9
0
Many thanks

So what do you guys reccomend i go for

good torque
low 20's top speed

Cheers
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
15,137
5,889
58
West Sx RH
Many thanks

So what do you guys reccomend i go for

good torque
low 20's top speed

Cheers
Buy the cassette hub from topbikekit, if you don't want 201rpm buy the 260rpm but it must be 48v and not 36v. 48v will be more efficient then overvolted 36v.
 

esuark

Pedelecer
Jul 23, 2019
29
4
kent
I have the same Woosh kit as the OP but would not the OP`s idea be limited by Woosh`s Lishui controller and King Meter KM259 LCD display ??
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
15,137
5,889
58
West Sx RH
I have the same Woosh kit as the OP but would not the OP`s idea be limited by Woosh`s Lishui controller and King Meter KM259 LCD display ??
If he already tops out at 18mph then it it derestricted so a faster hub will work, more Speed though will reduce range.
 

oldie1982

Finding my (electric) wheels
Jul 16, 2020
9
0
How much efficiency is lost by going with 36v instead?

I wont be using this new motor for long distances at all.

A bit confused now because i have read in many different forums threads a 36v q128 is a good idea at 48v.

Thanks
 

1boris

Esteemed Pedelecer
Sep 10, 2013
343
57
How much efficiency is lost by going with 36v instead?

I wont be using this new motor for long distances at all.

A bit confused now because i have read in many different forums threads a 36v q128 is a good idea at 48v.

Thanks
201 rpm 36volt q128H from Bms battery is a good idea.I run mine with 48volt 17ah controller.Very torquy.I had another 36volt q128C 201 rpm with same battery and controller as with the 128H motor, it burned up in a hill the q128H would have no problem with.