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by larsb
Oct 01 2020 4:15am
Forum: E-Bike Non-hub Motor Drives
Topic: higher or lower kv
Replies: 115
Views: 13647

Re: higher or lower kv

Ok, then difference will not be so high but the votol would still be more poweful since it is unlocked. I have used mine at 300A battery current for a while.
by larsb
Sep 28 2020 11:45pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

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The ebs is triggered regen so you need switch.
The hhc hdc is release throttle regen (never tried it)

If you read the text, think it was 3.7.4 or something then there is explanation on regen. Did you read it?
by larsb
Sep 27 2020 3:40pm
Forum: E-Bike Non-hub Motor Drives
Topic: higher or lower kv
Replies: 115
Views: 13647

Re: higher or lower kv

I never tried a sabvoton but roughly 500 phase amps for the votol vs 200 (if that’s phase current) is a clear difference. :wink:
by larsb
Sep 27 2020 10:36am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

Well, either your controllers are busted or you’re not connecting properly. Just set regen value and hook up 12v supply through a brake switch to the correct pin and voila.

It’s in the manual if you have reading skills😀
by larsb
Sep 20 2020 12:19pm
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

Back on the horse again :D :D :D Todays ride was the best yet! Riding was much more stable with the glued upper mount. I used entire battery without cutouts and got some eights and ovals ridden. I find toe side turns a lot harder than heel side, don’t know why. I’ll just have to work on it. I’ll eve...
by larsb
Sep 19 2020 2:54pm
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

Thanks to global warming my lakes almost never freeze anymore. Damned southern sweden, you can just cut away 4 months in the calendar since the winters are so useless.
by larsb
Sep 19 2020 2:31pm
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

I’ve got a drysuit so my season is eternal :wink:

I checked mast today, seems ok but the upper mount now has some play in it. Glued it solid with epoxy.
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I’m now mostly healed so tomorrow is ride time again if the board works :D
by larsb
Sep 10 2020 4:49pm
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

I checked some depth plots already for the nearby lakes.. i’m riding only the deep ones for a while :wink:
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by larsb
Sep 09 2020 3:38pm
Forum: E-Bike Non-hub Motor Drives
Topic: RC throttle interface build tutorial........
Replies: 199
Views: 67183

Re: RC throttle interface build tutorial........

For those still looking: this board should do the trick:
https://www.piasinarl.com/index.php?mai ... _id=437903
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So there’s no need to take a chance that an unknown servo tester can be hacked these days. :wink:
by larsb
Sep 07 2020 3:08pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 69
Views: 7207

Re: Hubmonster teardown

John probably knows better what can be concluded from the wires, if there’s no identification then you could do some trials: The two sets of windings will be isolated. Measure which ones and separate them. Both sets of halls will be active off course but they can be seen as matching two separate mot...
by larsb
Sep 05 2020 11:21am
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

Got a new prop printed, received both their real print and the test print so i did a carbon overlay on the uglier test print. It needs some coats of epoxy to fix the surface but i’m really happy with the carbon overlay C0C00041-75BC-4AB3-B4BE-C870A570E28B.jpeg Looking forward to healing and using it!
by larsb
Sep 04 2020 3:29pm
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

My foil actually is designed so slow that it is very blunt. Radius is about 10mm so you cannot get cut. I’ll have a think about protection..
by larsb
Sep 04 2020 3:24pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 1231
Views: 111284

Re: APL's DIY axial-flux motor

90 degre means the direction perpendicular to the fibers in a composite - basicly where the epoxy sets most of the stiffness. It’s not the same as the thickness of the plate direction. You only need to have more directions in your layers to get a decent stiffness of the sheet. Like -45 0 45 90 direc...
by larsb
Sep 04 2020 3:40am
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 1231
Views: 111284

Re: APL's DIY axial-flux motor

You don't need strength, you need stiffness, ie high youngs modulus and thick material in the axial direction. Thickness of your plate is the major part of the bending stiffness. stiffness relates to plate thickness to the power of 3 Don't know your engineering background but a simple example: a 1mm...
by larsb
Sep 02 2020 12:25am
Forum: Battery Technology
Topic: Continuous Charge Amp vs Continuous Discharge Amp
Replies: 60
Views: 1524

Re: Continuous Charge Amp vs Continuous Discharge Amp

..when it comes to ebiking
That’s why there are tons of specific use tests going on, like pajda here, mooch in the vape community or users at budgetlightforum, lygte-info and all others
by larsb
Sep 01 2020 3:23am
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

I totally agree :wink: :D
I guess i’ll be fine in a few weeks but right now it’s pretty miserable. My face is twice the size and even my dog is scared of me due to my weird movement pattern.
by larsb
Aug 31 2020 9:50am
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

Speaking of poor electric karma.. the good thing is the barge worked beautifully last session.The bad thing is that i hit a rock under water at full speed. It was large enough for me to hit it also in the crash - An incredible luck was that i didn’t go unconscious and drown as i was riding alone. So...
by larsb
Aug 31 2020 1:43am
Forum: Battery Technology
Topic: Continuous Charge Amp vs Continuous Discharge Amp
Replies: 60
Views: 1524

Re: Continuous Charge Amp vs Continuous Discharge Amp

@emark: It seems to me you think you are on to a great discovery, and your tone is annoyingly demanding. You’re not in any way breaking new ground and the cell manufacturers are not deceiving you. The truth is simple: you can charge at higher charge rate since normally datasheets doesn’t show the ch...
by larsb
Aug 29 2020 7:40am
Forum: Electric Watercraft
Topic: ”The barge” efoil build
Replies: 87
Views: 4965

Re: ”The barge” efoil build

I will ship mine to the south of spain, so they can play golf and zip colorful drinks with other old timers. Nice being able to joke even after paddling back the e-foil to the shore. Did you get far off shore before break down? I was on a lake so only 1km from starting point. Still a bit tiring for...
by larsb
Aug 28 2020 4:24pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

Please keep this votol thread on topic. You have your other thread to discuss all non votol issues. Please beware that in your thread fechter is talking about hall spacing 120 degrees and that phase angle is not the same. Phase angle directs when the coils are fired in relation to when the hall sens...
by larsb
Aug 28 2020 3:38pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

Yes, this is true. You’d never go from 60 to 54 though.
by larsb
Aug 28 2020 3:30pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

From the super soco forum The TC hs 54 electric poles (60 permanent magnets), that is 27 pole pairs. I wouldn’t trust someone that gets 60 magnets to be 27 pole pairs.. One pair is two magnets, 60magnets is 30 pole pairs if this wasn’t clear. Yeezus. The other thing is if you haven’t even got the sa...
by larsb
Aug 28 2020 2:55pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

nardcox wrote:
Aug 28 2020 2:48pm
27 pole pairs
27 pole pairs.. is this correct? Which motor?

Actually, if you don’t know this it’s very easy to check.
Take a compass, aim it at the outside case of motor where your magnets are. Turn once and count number of norths (or souths). This is your pole pair number.
by larsb
Aug 28 2020 2:53pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1135
Views: 110405

Re: Votol EM-100 & EM-150 controllers

Yes, off course but he didn’t compare to a kelly. I don’t seem to have the temp limiting in my old votol either so this was introduced at a later stage.