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by larsb
May 11 2021 1:36am
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

I have met people that won't post here because of trolls and bullies. So is that the case or is everyone going to stop this stupid petty nonsense already?!
I’d be interested to hear which users you refer to? Do they also have one of your former user id:s?
by larsb
May 10 2021 5:03pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

I’m getting a feeling of deja vu. One is EG and one is..?
0F970249-C29F-4D36-A42D-72BE0F20C62C.jpeg
0F970249-C29F-4D36-A42D-72BE0F20C62C.jpeg (96.05 KiB) Viewed 21 times
AA5CFF09-07E1-436A-ABEA-7670994E2473.jpeg
AA5CFF09-07E1-436A-ABEA-7670994E2473.jpeg (101.11 KiB) Viewed 21 times
Time to fess up. Kicked out due to misbehaviour, now back in the same shape and tone under a new name.
by larsb
May 10 2021 12:29pm
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

With that kind of gearing almost anything will be enough. Is it really that high? Between 18:1 and 6:1?
by larsb
May 10 2021 9:14am
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

What’s your total gearing? I think i ran 11/65 to 26” wheel or thereabouts back in the day - on a two wheeler. What’s your voltage? It seems to make an awful lot of noise and goes slow? Try lower the phase amp to 300 and battery to 150 so you’re at 1:2, see if it lowers the controller heating. Can y...
by larsb
May 10 2021 6:50am
Forum: Motor Technology
Topic: Cheaper hubsinks?
Replies: 12
Views: 238

Re: Cheaper hubsinks?

If you checked the price for alu blocks and cnc machine time then the 75usd or whatever hubsink price will look cheap. This profile type should be extruded. it’s borderline criminal to cut it with all the waste created (even though it can be done).
by larsb
May 10 2021 3:28am
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

yeah i was tempted not to open mine just to keep the original seal, but ill probably do it some time just from curiosity. guese i can always seal it back up too. i think ill try dual max e to start off as i have a few kicking about... :| id love the nuc 24s but thats serious doe, and more controlle...
by larsb
May 09 2021 11:23pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

This is what LARSB didn't do. He clearly needs to be worshipped and to sit on his pedestal of ego. Too bad for LARSB! I mean really...how hard is it to just say what was was said here by Ian instead of "your wrong"? One presents practical information and the other presents ego and a need ...
by larsb
May 09 2021 3:28pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

Did you find any mention of PWM in the link?
by larsb
May 09 2021 3:21pm
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

Ahem. This controller has autolearn? Then it should have worked with any zeroing as you did initially. Didn’t think about that.

If you get it to run well (any direction) then i guess you could also switch running direction in program?

Can you see the hall readouts in the program?
by larsb
May 09 2021 1:29pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

You might want to read up on controller function.
It was just a google away for those that wanted to learn:
https://www.digikey.at/de/articles/why- ... -dc-motors

This is just an example, plenty of different control techniques out there.
by larsb
May 09 2021 12:55pm
Forum: Motor Technology
Topic: Cheaper hubsinks?
Replies: 12
Views: 238

Re: Cheaper hubsinks?

A custom solution, sold in really small series like the hubsinks cannot be compared to a million series rc motor finset.

Sketchs development is worth it even with a simple enough design and lowtech production need :wink:
by larsb
May 09 2021 12:50pm
Forum: EScooters/EMotorcycles
Topic: More low end torque for up hill climbing power
Replies: 7
Views: 182

Re: More low end torque for up hill climbing power

Elektrosherpa wrote:
May 09 2021 11:42am
As far as I know, the "narrow tube" in an electric drivetrain is more often the controller and/or the battery than the motor itself.
No, not really when it comes to high loads. Plenty of us have burnt a motor or two :D
by larsb
May 09 2021 11:10am
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

There is nothing in a controller to regulate voltage downwards There is. If you don’t know then please be a bit more humble (or you could end up like the original poster of this thread, he was throwing tantrums enough to get kicked out just because he was wrong and couldn’t accept it.) It’s called ...
by larsb
May 09 2021 8:24am
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

I don’t think you need a stronger power supply. It doesn’t take much for the rotor to align correctly.

How do you intend to keep the position of the sensor? It cannot be allowed to move after zeroing and your pics look like you’ve only locked it temporarily (and not so securely)
by larsb
May 09 2021 12:40am
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

It must be the correct phase wires, fed in the correct direction for zeroing to work. Do they have colors or abc/uvw marking? Then just follow the zeroing instructions on the correct combination.

It’s a static alignment so you don’t need high current. Keep it at 5-10A, zero pads, done!
by larsb
May 08 2021 3:03pm
Forum: EBike Technical
Topic: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor
Replies: 27
Views: 563

Re: issues finding hall sensor combenations using svmc72150 and revolt 120 pro motor

Impossible to tell what the error is, this doesn’t look like the rls encoder i got which had a connector - did you crack it loose from it’s case and desolder the connector? Then i’d guess anything could have happened during modification.

Do you have 5v between + pad and ground?
Do you get any signal?
by larsb
May 07 2021 3:48pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 112
Views: 8988

Re: Hubmonster teardown

Depends on what you are saying. Phase amps can be and is commonly much higher than battery amps. If they were the same no one would make the distinction between battery and phase amps. battery watts = battery amps x battery volts motor watts = phase amps x battery volts agreed, this is incorrect. y...
by larsb
May 07 2021 10:41am
Forum: EBike Non-hub Motor Drives
Topic: 3DE - 3D Printed Carbon Wrapped e-bike frame
Replies: 36
Views: 1229

Re: 3DE - 3D Printed Carbon Wrapped e-bike frame

If you’re wanting an optimised design (and you do since you’re paying for carbon) then the inside/pla/outside sandwich will rely on the pla for shell support and separation to stop buckling if you want it to be light. If you cannot trust the pla to do that (and you shouldn’t on long term) then it’s ...
by larsb
May 06 2021 10:51am
Forum: EBike Non-hub Motor Drives
Topic: 3DE - 3D Printed Carbon Wrapped e-bike frame
Replies: 36
Views: 1229

Re: 3DE - 3D Printed Carbon Wrapped e-bike frame

Test will be as follows.. 1. wrap the part inside and outside in fiberglass then Carbon Fiber (down-tube section) 2. Leave it in the sun for a week or until something happens (I live in a fairly tropical part of Australia) maybe with a weight or something resting on one of the sides for good measur...
by larsb
May 05 2021 11:32am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1450
Views: 166267

Re: Votol EM-100 & EM-150 controllers

First of all thanks for the advises. I am aware of the different Hardware and Software configurations, i read about it. I just tried your parameters - but it does not change anything. The motor is still running pretty rough. Here are some short clips i made to show the behavior: Clip 01 - i set Bus...
by larsb
May 04 2021 11:55am
Forum: EBike Troubleshooting
Topic: Replacing Controller MOSFETs (Sabvoton72150)
Replies: 23
Views: 664

Re: Replacing Controller MOSFETs (Sabvoton72150)

How’d it go with this one?
by larsb
Apr 29 2021 11:42pm
Forum: EBike Technical
Topic: KLS7230H erratic rpm top end throttle only on motor change direction
Replies: 8
Views: 269

Re: KLS7230H erratic rpm top end throttle only on motor change direction

Please post here what the final conclusion is when you have it.