QS 3000w midmotor

Electric Motors and Controllers
j bjork   10 kW

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Re: QS 3000w midmotor

Post by j bjork » Jan 31 2020 2:08pm

VasiliSk wrote:
Jan 31 2020 3:48am
Hey, you have used this motor a lot in the development of your controllers right?
It would be really interesting to hear about your findings, what kind of output would you get with this motor and a 24fet nucular. What settings is best for field weakening and things like that.

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Jan 31 2020 3:22pm

I think Vasili wants to install a bigger pulley for his power bench. This will keep the strap longer. With 500A phases the pulley 22T exerts too great a force on the belt.
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Jan 31 2020 5:45pm

But where to find those pulleys for the motor ? Looks pretty custom.

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 01 2020 3:39am

I ordered a 48T pulley with a standard bore. I had the bore machined for the Qs 138 by a friend.
When I get it I'll show it to you
20191228_140022_rmedited_resize_29.jpg
20191228_140022_rmedited_resize_29.jpg (220.63 KiB) Viewed 1662 times
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

Bartosh   100 W

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Re: QS 3000w midmotor

Post by Bartosh » Feb 02 2020 5:05am

j bjork wrote:
Jan 31 2020 2:08pm
VasiliSk wrote:
Jan 31 2020 3:48am
It would be really interesting to hear about your findings, what kind of output would you get with this motor and a 24fet nucular. What settings is best for field weakening and things like that.
+1

FW + PID settings, to get the most out of this combo :bolt:

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 02 2020 8:29am

im just testing controllers on them, not dynamic loads :D
put 500A ph and 300Afw, pid depends on gear/mass, for surron ppl put 130 FOC ki coz it accelerates very quickly

i have puller, but its too much thick to fit under qs pulley, so i made threaded holes inside pulley

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 02 2020 9:47am

Personally I set 300A battery, 500A phases and 300 Fw. The pid is original. What can this setting change on a heavy vehicle?
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

larsb   1 MW

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Re: QS 3000w midmotor

Post by larsb » Feb 02 2020 10:03am

PID only improves how your speed is reached, it’s not the basic motor control?

so can be annoying but not related to motor performance?

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madin88   1 GW

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Re: QS 3000w midmotor

Post by madin88 » Feb 02 2020 1:40pm

larsb wrote:
Feb 02 2020 10:03am
PID only improves how your speed is reached, it’s not the basic motor control?

so can be annoying but not related to motor performance?
Those parameters have influence on current regulation and some users indeed did report about gains in acceleration.
Also when i was playing with them i was able to get a bit higher phase current stable on my RC motor setup.
But don't worry, as long as you have a motor with more or less "nomal" characteristics, the stock settings are already perfect or good enough.

btw:
early in this thread some have asked why the magnets from these QS midmotors have this V-groove arrangement.
IPM design with all it's benefits, like better cooling of magnets and that they cannot fly off at high RPM or the thing with reluctance torque potential, has been mentionend already, but probably the biggest benefit or one of the main reasons why they went witch such deep V-grooves IMO wasn't noticed yet.
So who has an idea? :)
two hints: tesla, magnet grade

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 04 2020 5:02am

Image
well, almost perfect! now its gonna cool belt too... or chomp my fingers

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 04 2020 5:48am

Whaooou !! I like this :bigthumb:

Superb machining work.

Mine is much more modest, and much heavier, but it does not cut the fingers.
IMG_20200203_210931_compress26.jpg
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Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 05 2020 3:01am

When first ride?

I should say too: QS is lazy *bad word* and did not respond at all to my requests about new pulley

markz   100 GW

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Re: QS 3000w midmotor

Post by markz » Feb 05 2020 3:05am

Chinese New Year of the rat, they busy

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 05 2020 3:28am

i was asking them quite before NY, i had time to ship pulleys from china for cnc

SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 05 2020 3:35am

Carrie always respond to me on Aliexpres

larsb   1 MW

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Re: QS 3000w midmotor

Post by larsb » Feb 05 2020 3:38am

but what do you need such a huge pulley for? (not a question to vasili :wink: )

Normally you gear for more torque, not less :D

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 05 2020 3:47am

It is simply to reduce the force exerted on the belt. I use the engine with a 2-stage transmission with a reduction bridge. Primary training has no reduction because the reduction bridge already has an 8: 1 ratio. The force on the belt with a 22T pinion is 2100Nm. The force on a pinion in 48T is only 750Nm.
Aixam 550 Twin retrophite Qs 138 70H, Thermo-Nucular electronics 24F, LG Chem 20s 60Ah

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QSMOTOR   1 kW

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Re: QS 3000w midmotor

Post by QSMOTOR » Feb 05 2020 9:29am

twikis wrote:
Jan 16 2020 10:50am
Hi,

has anybody measured the no load draw of this motor?
Or could someone maybe just lift up the rear, spin the motor up and note power+rpm, that'd help me out a lot.

Thanks,
Matt
Hi Matt,

Sorry we did not test these. Could i know why you need this data?

Thank you,
Judy
E-mail: judy@tzquanshun.com
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QSMOTOR   1 kW

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Re: QS 3000w midmotor

Post by QSMOTOR » Feb 05 2020 9:36am

VasiliSk wrote:
Feb 05 2020 3:28am
i was asking them quite before NY, i had time to ship pulleys from china for cnc
Hi, this is Judy from QSMOTOR.

Could i know which our person you contacted before? Is there any i can help.

Sorry for late reply, because of the nCoV, we extend our New Year Holiday to 18th Feb.But we will work at home from 3th Feb.
Any other question free to tell.

Thank you,
Judy
E-mail: judy@tzquanshun.com
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-International Sales -Tel: +86 0576 88551619 -Skype: vito-ho -QQ: 289026969
-WhatsApp/WeChat: +86 13656892883 -Email: vito@tzquanshun.com
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QSMOTOR   1 kW

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Re: QS 3000w midmotor

Post by QSMOTOR » Feb 06 2020 8:49pm

VasiliSk wrote:
Feb 05 2020 9:44am
info@qs-motor.com
damon@tzquanshun.com
steven@tzquanshun.com

The question is - can you make 46T 27mm wide pulley for 138 3000W motor?
May i know your e-mail address that i will check with my colleague Damon?

Sorry we could not provide custom 46T 27mm wide pully.

Thank you,
Judy
SiAECOSYS & QSMOTOR-Vito Ho
EV your life! 

-QSMOTOR/Taizhou Quanshun Electric Drive Technology Co., Ltd. -Taizhou SIA Trading Co., Ltd. (Export Dept.)
-International Sales -Tel: +86 0576 88551619 -Skype: vito-ho -QQ: 289026969
-WhatsApp/WeChat: +86 13656892883 -Email: vito@tzquanshun.com
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SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 07 2020 1:34am

QSMOTOR wrote:
Feb 06 2020 8:49pm
VasiliSk wrote:
Feb 05 2020 9:44am
info@qs-motor.com
damon@tzquanshun.com
steven@tzquanshun.com

The question is - can you make 46T 27mm wide pulley for 138 3000W motor?
May i know your e-mail address that i will check with my colleague Damon?

Sorry we could not provide custom 46T 27mm wide pully.

Thank you,
Judy
Can you do any custom pulley at all ?

We have problems with belt skipping , even with idlers, due to the nice torque from the motor.

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 07 2020 3:47am

QSMOTOR you should change your stock pulley to something bigger.
1) 22T will worn out quickly at 500A phase
2) it is exceed belt torque at 500A phase, there is no service factor left, at 500A it should make over 70Nm on shaft and calculated belt width is 60mm, 3 times more than your stock pulley

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madin88   1 GW

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Re: QS 3000w midmotor

Post by madin88 » Feb 07 2020 5:18am

VasiliSk wrote:
Feb 07 2020 3:47am
it is exceed belt torque at 500A phase, there is no service factor left, at 500A it should make over 70Nm on shaft and calculated belt width is 60mm, 3 times more than your stock pulley
Those rubber belts are the wrong choice IMO for this purpose.
It needs something better, like Gates PolyChain or Optibelt carbon belt which can take something like 3 times the torque at similar pulley dimensions.

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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 07 2020 5:46am

rubber belts easy to find anywhere and much cheaper

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