QS 3000w midmotor

Electric Motors and Controllers
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macribs   1.21 GW

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Re: QS 3000w midmotor

Post by macribs » Feb 08 2020 6:59am

Sure rubber belts are more common and readily stocked everywhere. But if you factor in the cost of custom pulleys and still extensive belt wear and short belt life, I don't know. Maybe those HD duty belts are not such a bad choice after all?

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 08 2020 7:08am

the polychain belt + sprockets kit is more than 300 € for the equivalent in standard kit it is less than 80 €. In this price must be added the replacement of the rear wheel sprocket for the polychain.
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VasiliSk   1 kW

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Re: QS 3000w midmotor

Post by VasiliSk » Feb 09 2020 9:26am

my pulley cost me 15$ for aluminum 46T (without cnc) and brand contitech HTD belt for bench is 12$, CXA belt is 30$, not polychain but a bit better. If qs factory could do custom pulleys (what is not hard if they have equipment already) they should not cost too much, since chinese market have a lot of pulleys, you just need to make a bore

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 09 2020 10:40am

Yes exactly because for us the specific bore is difficult to do whereas for Qs Factory it is very simple since they already make the 22T pulleys.
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SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 09 2020 10:49am

PITMIX wrote:
Feb 09 2020 10:40am
Yes exactly because for us the specific bore is difficult to do whereas for Qs Factory it is very simple since they already make the 22T pulleys.
I ask'd Carrie on Aliexpres... They will not do custom pulleys in small batches. So maybe if we could do some sort of group buy, on one specific model ? I would wery much like a 24T or 26T pulley.

I try asking Carrie.

larsb   1 MW

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Re: QS 3000w midmotor

Post by larsb » Feb 09 2020 12:16pm

Yes, some more tooth options on the front pulley would be nice. Also a universal rear pulley that has a simple flange mounting with some holes.

My rear pulley is now worn out after years of driving, 15000-20000km and i need a new. I really love the belt drive, i find it way superior to chain drive for road use.
Ride on!

Torti   1 W

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 5:37am

eee291 wrote:
Nov 07 2019 4:40pm
Looks good to me.

I guess you also have the temp sensor (white wire) not sure if that is plug and play with the Kelly as well since mine didn't have one.

I have a problem, can someone help?

Can't adjust the angle.
Screenshot_20200217-101211_AC Aduser.jpg
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Torti   1 W

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 6:05am

Torti wrote:
Nov 07 2019 2:53pm
then it would have to fit?




so sieht das aus

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eee291   100 kW

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Re: QS 3000w midmotor

Post by eee291 » Feb 17 2020 6:05am

It looks like something is wrong with the connections or one of your your halls are fried. Try rotating the motor and see if A,B and C halls are cycling from 0 to 1.

On most motors the hall sensors are 120° apart electrically or physically so you never have more than 2 sensors on 1 or 0. in you pic all three on 1 so there is a problem somewhere.

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 6:14am

The parts are all new.

All A / B / C are as in the picture on 1.


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20191107_201957.jpg
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minde28383   10 kW

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Re: QS 3000w midmotor

Post by minde28383 » Feb 17 2020 6:20am

Hi
getting undervoltage error. Controller and motor is right from factory. Trying to run it. Battery is some scrambled 2 x 10S3p lipo, overall 72v nominal.
Running app EM150 with can.
What to try to remove / solve that error?
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Bartosh   100 W

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Re: QS 3000w midmotor

Post by Bartosh » Feb 17 2020 6:29am

minde28383 wrote:
Feb 17 2020 6:20am
Hi
getting undervoltage error. Controller and motor is right from factory. Trying to run it. Battery is some scrambled 2 x 10S3p lipo, overall 72v nominal.
Running app EM150 with can.
What to try to remove / solve that error?
If it's a new SP version, get the latest app from siaecosys website. I think it's offline atm, PM me your @, I'll send it to you (v3 sport 9 xy-03). Then do this: viewtopic.php?f=7&t=95969&p=1525957#p1525957
BTW there's a separate thread for this controller.

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Re: QS 3000w midmotor

Post by Bartosh » Feb 17 2020 6:57am

Torti wrote:
Feb 17 2020 5:37am
I have a problem, can someone help?
Can't adjust the angle.
First I'd use a multimeter and check out each hall sensor. Disconnected, powered from a single cell or sth like this. Move the wheel, check out the output signals. As eee291 said, no 3xhigh/low possible.

Or... you can take off the side cover, have a look at your hall connector. You're saying it's new... well, yeah... Surprise! QS does not stand for Quality Stuff. There's my beautiful HQ hall connector below. Also straight from the factory. I suggest inspecting it.
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Last edited by Bartosh on Feb 17 2020 7:49am, edited 2 times in total.

SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 17 2020 6:58am

Torti wrote:
Feb 17 2020 6:14am
The parts are all new.

All A / B / C are as in the picture on 1.



20191107_201846.jpg20191107_201855.jpg20191107_201957.jpg
Have you connected gnd and +5v right, for the sensors ?

Torti   1 W

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 7:36am

can give the exact pinout with someone.

How can I measure it with the multimeter?

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eee291   100 kW

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Re: QS 3000w midmotor

Post by eee291 » Feb 17 2020 7:47am

Torti wrote:
Feb 17 2020 6:14am
The parts are all new.

All A / B / C are as in the picture on 1.



20191107_201846.jpg20191107_201855.jpg20191107_201957.jpg
I'm talking about the Kelly App in the picture before there are three rows like this in the second colum:
Hall A 1
Hall B 1
Hall C 1

All of them shouldn't be on 1 at the same time only max 2 halls should be on 1 or 0. Try turning the wheel to see if all of them or just some of them change state.

Torti   1 W

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 7:55am

eee291 wrote:
Feb 17 2020 7:47am
Torti wrote:
Feb 17 2020 6:14am
The parts are all new.

All A / B / C are as in the picture on 1.



20191107_201846.jpg20191107_201855.jpg20191107_201957.jpg
I'm talking about the Kelly App in the picture before there are three rows like this in the second colum:
Hall A 1
Hall B 1
Hall C 1

All of them shouldn't be on 1 at the same time only max 2 halls should be on 1 or 0. Try turning the wheel to see if all of them or just some of them change state.

nothing changes, everyone is on 1

Torti   1 W

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Re: QS 3000w midmotor

Post by Torti » Feb 17 2020 8:11am

Bartosh wrote:
Feb 17 2020 6:57am
Torti wrote:
Feb 17 2020 5:37am
I have a problem, can someone help?
Can't adjust the angle.
First I'd use a multimeter and check out each hall sensor. Disconnected, powered from a single cell or sth like this. Move the wheel, check out the output signals. As eee291 said, no 3xhigh/low possible.

Or... you can take off the side cover, have a look at your hall connector. You're saying it's new... well, yeah... Surprise! QS does not stand for Quality Stuff. There's my beautiful HQ hall connector below. Also straight from the factory. I suggest inspecting it.



Thanks for the tip.

I checked the connector.

everything is OK

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Re: QS 3000w midmotor

Post by Torti » Feb 18 2020 3:49pm

An error was found, 1 cable from the choke was defective.

The Hall sensor test works, but in the end there is always the internal error reset.

SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 22 2020 1:02pm

My friend just did this 26T out of the original 22T and a 26T pulley, pressed together.

We both have belt skipping on our electric gokarts, with the original 22T. Looking forward to test this.

Image
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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 22 2020 1:48pm

Great job :thumb: have you changed the pinion on the rear axle? Otherwise the transmission will be much longer.
To this modification, the effective tension on the belt is 1208N instead of 1428N with the old pinion 22T.
Last edited by PITMIX on Feb 22 2020 1:56pm, edited 1 time in total.
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SilverLine   100 W

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Re: QS 3000w midmotor

Post by SilverLine » Feb 22 2020 1:55pm

PITMIX wrote:
Feb 22 2020 1:48pm
Great job :thumb: have you changed the pinion on the rear axle? Otherwise the transmission will be much longer.
We can move the hole motor mount back and forth on the gokart frame

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 22 2020 2:00pm

Okay, this is to tighten the belt, but what I mean is that the ratio will drop from 4.7: 1 if you have a 22T motor gear and 104T rear gear. With the 26T you have 3.9: 1 if you keep the 104T pinion.
The motor will force more and consume more energy.
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 » Feb 22 2020 2:06pm

PITMIX wrote:
Feb 22 2020 2:00pm
Okay, this is to tighten the belt, but what I mean is that the ratio will drop from 4.7: 1 if you have a 22T motor gear and 104T rear gear. With the 26T you have 3.9: 1 if you keep the 104T pinion.
The motor will force more and consume more energy.

Oh.... yes of course, I know. We are still in testing face..... At the moment I run 22T - 72T ( 3,27 : 1) So with 26T I have 2,76 : 1

With 3,27 : 1 my topspeed is 92km/h.... The goal is to cross the 100km/h mark...

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PITMIX   100 W

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Re: QS 3000w midmotor

Post by PITMIX » Feb 22 2020 2:53pm

92km/h Wow !! :D :shock:
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