Search found 971 matches

by eee291
Nov 11 2019 6:19pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

I'm an easygoing guy, but I still feel like you are talking down on me :confused:

Anyways...
I have never used Flux weakening so I know little about it. I always just overvolt motors :|
by eee291
Nov 11 2019 2:37pm
Forum: Motor Technology
Topic: Kelly Controller & Outrunner trouble (Help!)
Replies: 3
Views: 63

Re: Kelly Controller & Outrunner trouble (Help!)

Nope, it's hopeless.
Believe me I tried, I even ended up using a sensorless controller in the end because the halls were acting up.
by eee291
Nov 11 2019 1:55pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

I think you mean basic concept of Brushless motors but whatever nice troll.
by eee291
Nov 11 2019 12:49pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

https://www.alibaba.com/product-detail/ ... 72bc9oOG6i

48V 60V and 72V versions are available 8)
by eee291
Nov 11 2019 10:38am
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

Well qs does sell a 48V version :D
If you run it at 72V with Flux weakening you might get close to 6000 rpm under load :banana:
by eee291
Nov 11 2019 6:14am
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

You lost me there, If you want a higher top speed you need to lower the gear ratio like 1:3 or 15T and 45T at the rear.
Of course this will decrease starting torque, but 25% less torque for this motor isn't that bad IMO.
Or do you need the best possible acceleration and speed?
by eee291
Nov 10 2019 3:05pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

you can get them online for pretty cheap. https://www.racing-planet.de/xanario_search.php?language=de&sessID=6f7f55fb0702740b3ddeb9fdf90270b5&hea_sea_pd=0&query=kettenrad&x=0&y=0 I'm guessing about 80-90Kph with 24S and 53T Sprocket. I have to install the bigger battery this week and give it a test ...
by eee291
Nov 10 2019 12:49pm
Forum: Motor Technology
Topic: Kelly Controller & Outrunner trouble (Help!)
Replies: 3
Views: 63

Re: Kelly Controller & Outrunner trouble (Help!)

Use a KBS controller.

This is also an issue with the denzel 3000 and 4500 and some other motors.
Trapezoidal controllers work fine but sinewave is an issue because the because of the terrible EMF waveform of the motor.
by eee291
Nov 10 2019 12:40pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

Sorry to butt in but what top speed are you aiming for? I also thought that on my derbi a 1:5 gear ratio would be too low but after experiencing it I don't even want to put a bigger sprocket on the rear anymore. The torque is already terrifying. I'm using a 420 13T on the front and a 65T on the rear...
by eee291
Nov 07 2019 4:40pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

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.
by eee291
Nov 07 2019 3:56am
Forum: General Discussion
Topic: Converted alternator on ebike controller
Replies: 28
Views: 873

Re: Converted alternator on ebike controller

Glad to see that it's working :bigthumb:
by eee291
Nov 07 2019 3:52am
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

but the wires of the cables do not match which can 120a max 300A Could you clarify? The hall sensor plug fits to all Kelly's, only the positive and negative have to be correct (purple and black on the Kelly side) withe red and black one the motor side. The other three colors are irrelevant (blue ye...
by eee291
Nov 05 2019 5:53pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

Nope, it's plug and play.
Also that controller is way underpowered for that Motor.
by eee291
Oct 25 2019 12:14pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 949
Views: 107075

Re: kWeld - "Next level" DIY battery spot welder

Thanks for the correction but I think you know what I meant :wink: yes, but it would not be as funny. on a more serious note: higher resistance metals that can take higher temps is a cirular fail as you need more power as the electrodes take up more power then the weld itself so you get even more h...
by eee291
Oct 24 2019 2:34pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 949
Views: 107075

Re: kWeld - "Next level" DIY battery spot welder

Thanks for the correction but I think you know what I meant :wink:
by eee291
Oct 24 2019 2:28pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 949
Views: 107075

Re: kWeld - "Next level" DIY battery spot welder

why don't we just replace the copper tips with metal ones?
by eee291
Oct 24 2019 2:23pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 358
Views: 29014

Re: QS 3000w midmotor

It's the same as the old one, this one has two mounts made into the case instead of the old bolt-on version.
This way you don't need to make an adapter plate like I had to do.
by eee291
Oct 17 2019 7:03am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 817
Views: 71044

Re: Nucular electronics - complete kit for ev! [beta]

I don't mean to sound like an ass but iron losses are pretty negligent. I have plenty of experience with overvolting motors, generally up to 40V more than design.

If you want to talk about losses then look at field weakening :!:
by eee291
Oct 16 2019 3:11pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1146
Views: 103904

Re: bluetooth BMS?

There is no hardware difference, just change the appropriate values and you are good to go.

If you bought a BMS with the wrong cell count it is a bit more difficult to set up.
by eee291
Oct 13 2019 2:08am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Need help with programming a Lingbo controller on my scooter
Replies: 3
Views: 132

Re: Need help with programming a Lingbo controller on my scooter

Doesn't look like there is a Bluetooth option, not sure since I never owned any of those Golden Motor products.

https://www.goldenmotor.ca/pages/Downloads.html
by eee291
Oct 10 2019 11:00am
Forum: Battery Technology
Topic: Nkon not shipping outside EU?
Replies: 8
Views: 438

Re: Nkon not shipping outside EU?

rczuluk@nkon.nl They respond relatively quickly.
by eee291
Oct 10 2019 10:55am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1146
Views: 103904

Re: bluetooth BMS?

I made this mistake once,
IIRC I changed the shunt value to something like 2.5mOhm and then did a current calibration at 10A discharge and 5A charge and all was good again.
It wasn't any more accurate than it was previously btw.
by eee291
Oct 04 2019 1:34pm
Forum: Battery Technology
Topic: low temp error on my BMS
Replies: 26
Views: 858

Re: low temp error on my BMS

The Domino throttle is a Potentiometer throttle, change the throttle type in the Kelly app.