Do you have a picture of the QS205 mounted?
Good Day!
Sorry, just noticed your message.
Please, give me 10-15 minutes I will post a video and after add some description.
But there really nothing special, just swing arm and motor.
There were some problems with placing sprocket at QS205. But I will share a solution that works for me.
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Add 1 of 2: Just video with overview of the bike:
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Add 2 of 2:
So, there was enough space to install QS205 motor inside swing arm and as result space released inside frame for big battery (22s 60A CATL) . So, I did that. That looks not very beautiful, because swing arm need to be painted again. But it works.
As for QS205 and sprocket. It was a version for scooters with big disk break. If I remember correctly for 10" rim\wheel.
The rim itself was cut off with a saw.
Disk brake tube\flange that hold disk also was cut (actually it is empty inside, I was thinking there is bearing inside).
To mount sprocket for 428 chain was bought 3 things:
1. Plumbing flange (model: Сантехнический фланец ДУ 50 РУ6 )
2. Sprocket that almost perfectly fits Plumbing flange sold by Unitech company in Ukraine. Actually, I think Sprockets are not manufactured in Ukraine, but they (Unitech) can drile (change size D=12-38 ) of central hole for any size for your request. So, I ordered a hole size that will fit popular bearings that fit motor shaft. (probably original sprocket manufacture name: SATI )
Model name: UT000025688 - you may google for it if you need.
3. Bearings (2 pc). Model: 61804 2RS (1000804 2RS) CRAFT (UT000053994)
As for fixing motor to swig arm... There are just two metal plate from each side , each has a thickness of 10 mm. So, 20 mm from each side.
As for gearing, motor sprocket have 19T and back wheel sprocket 52T if I remember correctly.
Just in case: controller votol 150. Current in "sport" mode 200A.