Search found 847 matches

by Ohbse
Aug 07 2020 11:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5215
Views: 563320

Re: Sur-Ron - New Mid drive Bike

Highest I could get the motor was 72C-74C. It mostly stayed around 65C-70C. This is with 88F outside air. This is also using 90 amps x battery voltage with a Nuclear 24 fet controller. I checked the case temp with an infared thermometer, when the temp was 65C inside the motor measured by the temp p...
by Ohbse
Aug 07 2020 10:29pm
Forum: Motor Technology
Topic: Surron Motor tuning with datalogs! FOC experts needed
Replies: 11
Views: 689

Re: Surron Motor tuning with datalogs! FOC experts needed

I realised I never posted an update here - vasiliy released new firmware based on mine and others feedback which completely resolved the non linear behaviour and now this thing RIPS. Still on 16s stock battery with a parallel booster pack from old 30qs, now hits 16.2kw on a daily basis. Power does n...
by Ohbse
May 08 2020 9:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5215
Views: 563320

Re: Sur-Ron - New Mid drive Bike

What throttle pot do you have? I've graphed my stock SurRon pot and its S shaped and exactly opposite of what you show. Slow ramp at the start (and end) and steep in the middle. He's using a shitty chinese thumb throttle with abysmal voltage curve and complaining of throttle issues. Stock Sur-ron t...
by Ohbse
Apr 26 2020 8:19pm
Forum: Motor Technology
Topic: Surron Motor tuning with datalogs! FOC experts needed
Replies: 11
Views: 689

Re: Surron Motor tuning with datalogs! FOC experts needed

Any updates on this? I understand the motor current dropping off as you run out of phase amps but why does the battery current also drop off in the mid/high end? That is the million dollar question! This is doubtless due to BEMF, however the fact that it increases so non-linearly with motor RPM is ...
by Ohbse
Apr 10 2020 9:24pm
Forum: Vendor Relations Corner
Topic: E.R.T \ Alan Hu nightmare.
Replies: 30
Views: 1992

Re: E.R.T \ Alan Hu nightmare.

I had a similar experience buying a motor from him about 4 years ago. Nothing has changed, he is incapable of functionally running a business and communicating to even a basic degree.

Chargebacks are the way to deal with this BS, call your credit card company and get your money back.
by Ohbse
Apr 09 2020 7:13pm
Forum: Motor Technology
Topic: Surron Motor tuning with datalogs! FOC experts needed
Replies: 11
Views: 689

Surron Motor tuning with datalogs! FOC experts needed

My favorite controller by a mile, the Nucular 24f has recently added the ability to datalog to the onboard microSD card. This allows for some awesome analysis that previously would only be possible with a handful of high end controllers and custom logging solutions or with a lot of external, expensi...
by Ohbse
Mar 02 2020 3:16am
Forum: E-Bike Build Threads / Photos & Video
Topic: Neematic - 20kW middrive bike
Replies: 261
Views: 52349

Re: Neematic - 20kW middrive bike

- Battery specs say 50V 2.2 kW. Do they mean 12S @ 110aH of an undisclosed cell type? Website says a 6 hour recharge so aprox 18 Amp charge? Batteries are supposed to be hot-swappable This is such a stupid, embarrassing error to neglect the kW h on your own launch brochure. By the sounds of it, pac...
by Ohbse
Mar 01 2020 3:14pm
Forum: Items for Sale - New
Topic: Advanced ADAPTTO controllers and compatible products
Replies: 1601
Views: 257116

Re: Advanced ADAPTTO controllers and compatible products

DasDouble wrote:
Mar 01 2020 9:50am
Well my personal Max-E got repaired like 2 times already. Worked really great with them. Hopefully not the whole controller is damaged but only the display instead.
Cheers
Recently? I'm not sure that Adaptto is functional as a business at all at this point...
by Ohbse
Feb 29 2020 11:06pm
Forum: General Discussion
Topic: Fatal ebike crash trial
Replies: 31
Views: 3104

Re: Fatal ebike crash trial

I hope that wasn't a forum member, traveling 10mph over the speed limit in a crowded city setting and then leaving the scene of an accident. He deserves some punishment. Does England have the legal concept of contributory negligence, where a percentage of the fault can be assigned to the respective...
by Ohbse
Feb 29 2020 10:37pm
Forum: Items for Sale - New
Topic: Advanced ADAPTTO controllers and compatible products
Replies: 1601
Views: 257116

Re: Advanced ADAPTTO controllers and compatible products

Good luck with that. I'm not aware of any recent repair successes. Tell your friend to get on the Nucular waiting list asap!
by Ohbse
Feb 22 2020 6:14pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5215
Views: 563320

Re: Sur-Ron - New Mid drive Bike

Generally drop-shippers charge their customers a premium for access to "their" parts, that they don't actually have at all lol. OK, but it's pure speculation on your part if that is what they are actually doing or not, right? You can just go buy the parts for less from a real dealer, but you do as ...
by Ohbse
Feb 22 2020 4:37pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 66
Views: 9076

Re: Roman Kostrygin - Sur-Ron 16kw outrunner

Hopefully he's a little more open to learning as he goes and doesn't take everything overly personal. There's clearly a lot of dicks on Endless Sphere. There's clearly lots of people that are haters too. All I can say is if the commenters in this thread and others are the welcome wagon...well you h...
by Ohbse
Feb 21 2020 5:05pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 66
Views: 9076

Re: Roman Kostrygin - Sur-Ron 16kw outrunner

:lol:

Absolutely fantastic. I'm glad 'motormodder' is going to follow in EGs footsteps and evaluate this motor. Hopefully he's a little more open to learning as he goes and doesn't take everything overly personal.
by Ohbse
Feb 21 2020 5:02pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Neematic - 20kW middrive bike
Replies: 261
Views: 52349

Re: Neematic - 20kW middrive bike

Thread title is 20kw but all the published specs are 15, which is possible, though seems unlikely to maintain that output for any length of time. 2.2kwh pack assembled from 18650s or 21700 cells is pretty maxed out at 15kw output. Personally, I think the pedals at this power level are pointless and ...
by Ohbse
Feb 19 2020 1:42pm
Forum: EV Business World
Topic: GM retreating into its shell ?
Replies: 36
Views: 2735

Re: GM retreating into its shell ?

Right... 90k income - Aus $22,597. NZ $21,871. You are familiar with the function of numbers right? I would have paid $3500 more in Aus this year, not including all the other ways Australia essentially taxes people, health insurance, car registration, mandatory vehicle insurance which are all an ord...
by Ohbse
Feb 19 2020 3:22am
Forum: EV Business World
Topic: GM retreating into its shell ?
Replies: 36
Views: 2735

Re: GM retreating into its shell ?

Small economies like Au have to have high taxes unless they have large trade surplus from natural resources like Oil, Gas, coal, Iron ore , etc. If you limit or eliminate the exploitation of those resources , you can expect even higher taxes. Mate, you post a lot of bollocks - but this takes the ca...
by Ohbse
Feb 17 2020 1:03pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1478
Views: 156248

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

100% buy the 12f. For what you're doing you will want the phase amps, power limit doesn't matter so much.
by Ohbse
Feb 08 2020 7:27pm
Forum: E-Vehicles General Discussion
Topic: Motortrend article with tons of info about Tesla’s Cybertruck
Replies: 111
Views: 10098

Re: Motortrend article with tons of info about Tesla’s Cybertruck

DSG gearboxes are great but I suspect will be expensive timebombs when a lot of these cars get to 10 years old. It'll probably end up being the case that if it goes wrong most people will scrap the car. I've also observed that approx 1990-2005 or so was a good period for cars in terms of refinement...
by Ohbse
Feb 08 2020 2:20am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 6277
Views: 345194

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Likely not economic to reuse, given how much larger newer wind turbines have become. There's also been a lot of iterative improvement in blade profile over the last 15 years.
by Ohbse
Feb 07 2020 9:17pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Observed trials bike designing
Replies: 104
Views: 8490

Re: Observed trials bike designing

Sounds cool. Not sure you're going to have enough phase amps or response out of the Kelly to snap the front wheel up though, they're known for being underwhelming on low end torque and low speed throttle response.
by Ohbse
Feb 07 2020 8:13pm
Forum: E-Bike Technical
Topic: Ebikes are they AC, DC or?
Replies: 56
Views: 2712

Re: Ebikes are they AC, DC or?

That said there are both BL AC motors and BL DC motors. 3 phase BL DC is "pulsed" direct current not to be confused with alternating (BL AC) current ... https://www.motioncontrolonline.org/products/ac-brushless-motors.cfm Not really true and somewhat confuses the issue further. AC induction (as in ...
by Ohbse
Feb 06 2020 4:59pm
Forum: Battery Technology
Topic: 100% discharge rate capacity
Replies: 109
Views: 5602

Re: 100% discharge rate capacity

No, again, your graph is meaningless. The % figures you reference have ZERO bearing on how this works.

Forget you ever read the table with those figures as they have literally nothing to do with calculating lifespan, efficiency, power etc.
by Ohbse
Feb 06 2020 3:10am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Observed trials bike designing
Replies: 104
Views: 8490

Re: Observed trials bike designing

Running a motor on a lower voltage will merely reduce its usable RPM range, plus power in the higher portions of that range. Due to the effects of bemf, you will be unable to drive the same current as RPMs increase vs if you had a higher voltage pack. The low down torque will be largely unaffected h...
by Ohbse
Feb 06 2020 3:04am
Forum: E-Bike Technical
Topic: Controller comparison Nucular 24F, Power Velocity 25
Replies: 8
Views: 642

Re: Controller comparison Nucular 24F, Power Velocity 25

+1 for the Nucular. It's the full package. Control, power, reliability, feature set, support. I'm running 500 phase 250a battery on a Surron and it's absolutely fantastic. I've owned most controller brands, in some cases many variants - this is easily the best solution for lightweight EVs (and even ...
by Ohbse
Feb 06 2020 2:36am
Forum: Battery Technology
Topic: 100% discharge rate capacity
Replies: 109
Views: 5602

Re: 100% discharge rate capacity

What are you talking about? 3a doesn't kill a 30q. The percentages you're referencing mean *NOTHING* Read my previous post, look at the graph - what you're describing is utterly meaningless. I spent my journey with WILDLY varying power from -13,000 watt to +4000 watt under regenerative braking, vary...