QS 3000w midmotor

Electric Motors and Controllers
larsb   1 MW

1 MW
Posts: 1736
Joined: Dec 10 2014 5:12am
Location: Gothenburg, Sweden

Re: QS 3000w midmotor

Post by larsb » Mar 22 2020 11:40am

There was a video linked, showing this motor at 30S or thereabouts. Would give 9000rpm or so with FW :bolt:
Highly unsecure info though, wonder what the heating is like at those rpms.

With 5 pole pairs it could still be possible considering the lower erpm compared to most motors.
Last edited by larsb on Mar 22 2020 5:06pm, edited 1 time in total.
Ride on!

User avatar
PITMIX   100 W

100 W
Posts: 191
Joined: Nov 18 2018 3:25pm
Location: France

Re: QS 3000w midmotor

Post by PITMIX » Mar 22 2020 1:27pm

this video is awesome : :shock:
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

Maarkmo   100 µW

100 µW
Posts: 7
Joined: May 11 2020 10:35am

Re: QS 3000w midmotor

Post by Maarkmo » May 26 2020 10:08am

Can someone tell me what the inner pulley diameter is? Or the Shaft diameter? Qs motors doesnt have any available right now with motorcycle shaft they only have them ready with the regular pulley, im wondering if i can find a sprocket that i can fit on there.

User avatar
PITMIX   100 W

100 W
Posts: 191
Joined: Nov 18 2018 3:25pm
Location: France

Re: QS 3000w midmotor

Post by PITMIX » May 26 2020 10:20am

Return to see on the previous pages (page 11) I put photos with all the dimensions.
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

Maarkmo   100 µW

100 µW
Posts: 7
Joined: May 11 2020 10:35am

Re: QS 3000w midmotor

Post by Maarkmo » May 26 2020 11:27am

PITMIX wrote:
May 26 2020 10:20am
Return to see on the previous pages (page 11) I put photos with all the dimensions.
Oh wow you did all the hard work for me. Thank you! The measurements seem to be a little different each time you took it, but you said that the inner dimension of the pulley was 25mm is that correct? If this is the case then a sprocket with a 1 inch bore should be compatible with the shaft on that motor.

User avatar
PITMIX   100 W

100 W
Posts: 191
Joined: Nov 18 2018 3:25pm
Location: France

Re: QS 3000w midmotor

Post by PITMIX » May 26 2020 12:25pm

Please note the bore is tapered. 25 mm is for the flange seal
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

Maarkmo   100 µW

100 µW
Posts: 7
Joined: May 11 2020 10:35am

Re: QS 3000w midmotor

Post by Maarkmo » May 26 2020 1:01pm

Yes I'm aware. I think a 1 inch bore will work ill let u know

Post Reply