Search found 7437 matches

by Doctorbass
May 06 2021 11:41am
Forum: General Discussion
Topic: Historic "Deathbike" stolen in Oregon, $1500 reward
Replies: 5
Views: 390

Re: Historic "Deathbike" stolen in Oregon, $1500 reward

OMG ! i guess that people that stole it have no idea on how much important this very ebike bike was for Luke and the community!!! It would be great to have hyperspectral camera onboard of some Google satellite to track the blood traces like Luke is refering too !!!! Or find all traces of lost shooes...
by Doctorbass
May 05 2021 11:30pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5475
Views: 627891

Re: Sur-Ron - New Mid drive Bike

Not sure there was pictures of the Sur Ron motor so i opened one ( a 2018) for your own pleasure :wink: that motor had Hall sensor problem making the bike to have some cut out. We can see that there was water intrusion inside on the hall sensor cover and that it went down to the stator core base. Th...
by Doctorbass
May 05 2021 9:53pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5475
Views: 627891

Re: Sur-Ron - New Mid drive Bike

The current sensor seems very interesting. It is a "C" shape iron core with a hall sensor between the two ends. Notice that on the version i got the poting continue all the way up to the phases and power input leads and suround them with the plastic cover lower parté I had to tear it apart...
by Doctorbass
May 05 2021 9:29pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5475
Views: 627891

Re: Sur-Ron - New Mid drive Bike

$/Amp price on them is much better than the old 4110's though. :-) The powerfull Fet have so much improoved since 10 years! Luke! The great old time where 4110 were the king of the place to tripple power of simple cheap crystalyte controllers and where adding some solder to the shunt was the 2nd me...
by Doctorbass
May 05 2021 9:26pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5475
Views: 627891

Re: Sur-Ron - New Mid drive Bike

Hey guys I have to say it take ton of patience to just remove the plastic cover! I pried 2 screwdriver and i tought multiple times i had forgot some screw hidden somewhere but not!! the plastic cover is glued also to the internal poting. This make all surrounding edge very strong to unstick from the...
by Doctorbass
May 05 2021 8:48am
Forum: Motor Technology
Topic: Sur Ron motor shaft becoming hot
Replies: 0
Views: 55

Sur Ron motor shaft becoming hot

Hello guys, I got a Sur ron motor and controller recently to play with. I discovered that when running no load, the shaft is becoming significantly hot! I know that running a motor no load without power produced is a like a pure noise and heat generator and all energy is likely going into heat, but ...
by Doctorbass
May 05 2021 8:36am
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5475
Views: 627891

Re: Sur-Ron - New Mid drive Bike

As this topology is only a trace footprint reconfigure away from running any of the sits on top PCB packages, it would be exciting to see them reconfigure for these little guys. Ti MOSFET CSD19536KTT Space available to package a few more of them on the board, get 8 per parallel group of that Ti FET...
by Doctorbass
Apr 28 2021 10:21am
Forum: Motor Technology
Topic: MY1020,Brushless BM1109 YALU, KUNRAY motors
Replies: 0
Views: 319

MY1020,Brushless BM1109 YALU, KUNRAY motors

Hello guys, Long time no post here. I'm back :wink: I am about to modify the electric QUAD of my nephew that is now using MY1020 36V 800w at 29A for 2.8Nm on a 11T to 68T at the wheel. It has not alot of torque and i think it has alot of potential for upgrade. 8) I checked for QS motor options in th...
by Doctorbass
Mar 26 2021 3:57pm
Forum: Alternative Energy
Topic: NEC 690: 50Vnom max vs 16s LiFePO4
Replies: 1
Views: 135

NEC 690: 50Vnom max vs 16s LiFePO4

About code. I see many mention that always talk about LESS THAN 50V system (in DC) however very few mention it's a NOMINAL voltage but not all. I think they should at least ALL mention nominal, max voltage, full voltage or charge or peak Voltages 48V in Lead acid is 57.6V full = over 50V 48V in 13s ...
by Doctorbass
Mar 23 2021 9:03am
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1670
Views: 269571

Re: Thread for new battery breakthrough PR releases

Structural battery coming?

I found another interesting video about that.

That also is in line with what Luke workman told me about the next promising tech for battery, especially for airplaine.



Doc
by Doctorbass
Dec 24 2020 12:13am
Forum: Battery Technology
Topic: 2020/21 What's the best 100A Peak Pack?
Replies: 77
Views: 2889

Re: 2020/21 What's the best 100A Peak Pack?

On the opposite to regular Lithium cells like NMC, NCA, LiPO, LiCO etc, the LiFePo4 cells never realy improoved in energy density. They keep theyr life cycle incredible and flat discahrge curve. Personally io made many packs with LiFePo4 and mostly A123 pouch and round cells and i always prefered th...
by Doctorbass
Dec 10 2020 11:56am
Forum: Items for Sale - New
Topic: New HIGO and JULET connectors
Replies: 14
Views: 3038

Re: New HIGO and JULET connectors

For those who are looking for the Julet Z916 pinout here it is:
by Doctorbass
Jun 10 2020 9:59am
Forum: E-Vehicles General Discussion
Topic: SEVCON, DVT and DOCTORBASS
Replies: 2
Views: 833

SEVCON, DVT and DOCTORBASS

Hello guys In the past years i recived ton of request for supporting people with their SEVCON adventure if i can call it this way :confused: Going with Sevcon is a complicated adventure for most of people. Only a small portion have the real experience to play with that and understand WITHOUT the nee...
by Doctorbass
May 21 2020 12:49pm
Forum: General Discussion
Topic: Cycle Analyst Trip Analysis Software (now Online Sharing!)
Replies: 98
Views: 20395

Re: Cycle Analyst Trip Analysis Software (now Online Sharing!)

john61ct wrote:
May 05 2020 1:47pm
welcome back, you've been missed!
Thanks John, I am really busy now but make effort to keep active my presence here.

Doc
by Doctorbass
May 21 2020 12:48pm
Forum: General Discussion
Topic: Cycle Analyst Trip Analysis Software (now Online Sharing!)
Replies: 98
Views: 20395

Re: Cycle Analyst Trip Analysis Software (now Online Sharing!)

Thanks for the effort NCC1941!! :wink:

That is encouraging. I will try to find how to stop the scrip that block the thing.

Doc
by Doctorbass
May 05 2020 11:36am
Forum: General Discussion
Topic: Cycle Analyst Trip Analysis Software (now Online Sharing!)
Replies: 98
Views: 20395

Re: Cycle Analyst Trip Analysis Software (now Online Sharing!)

I think there is a problem with the GPS file upload with the web app. It work with the CA file no prob, however once i try to add a GPS file and clic on SUBMIT, it keep waiting infinitly. I tried the files from Justin exemple and it also wont work even with these. Anyoe else is experiencing that pro...
by Doctorbass
Mar 04 2020 12:22am
Forum: EBike Build Threads
Topic: Nyx frame, 273mm*40m V3 hub, and 650A
Replies: 194
Views: 36342

Re: Nyx frame, 273mm*40m V3 hub, and 650A

I noticed doctorbass has been largely absent as well, though that could just be a coincidence. I've read through many of the old posts here at ES and it seems that at least a few of the people who seemed to be on the bleeding edge circa 2015 or so are either notably absent or no longer contributing...
by Doctorbass
Feb 02 2020 5:58pm
Forum: Alternative Energy
Topic: Grid Tie Solar inverter hybrid 48vdc UL or CSA
Replies: 5
Views: 1435

Grid Tie Solar inverter hybrid 48vdc UL or CSA

I am actively searching for a inverter that is: -1 or 2 MPPT input ( idealy starting from 60VDC and not 200vdc as i have some string of 2x 60 cells panel only) -Grid Tie -Hybrid (battery backup input) -48Vdc ( not 24, not 12) -Certified UL or CSA. - 4kW and more It seem a real pain to find some that...
by Doctorbass
Dec 29 2019 4:22pm
Forum: Alternative Energy
Topic: Grid tie inverters and HV battery
Replies: 14
Views: 2821

Re: Grid tie inverters and HV battery

Thanks cricketo, I did not know that there are battery-powered off-grid inverters that generate the sine wave necessary for grid-tied inverters. And that SMA does that. I saw great bargain of some large SMA inverter at very nice price however these are not split phase so you need two that i guess ar...
by Doctorbass
Dec 29 2019 11:50am
Forum: Alternative Energy
Topic: Grid tie inverters and HV battery
Replies: 14
Views: 2821

Re: Grid tie inverters and HV battery

Thanks you Bill. I made a video to better explain the experiment. Btw these Enphase are isolated from in to output except for the AC ground that have some high capacitance relative to the DC side. I saw these chineese inverter /charge controller that control the output to contyrol what they dump to ...
by Doctorbass
Dec 28 2019 9:57pm
Forum: Alternative Energy
Topic: Battery powered micro inverter and parallel them !
Replies: 0
Views: 1411

Battery powered micro inverter and parallel them !

Hello guys, In my solar project i am making some testing prior to see if some concept are working. You can get very cheap used old micro inverter like the Enphase M190 and to increase their power you can paralle them if you use these outside their MTTP voltage range when powered by battery. In these...
by Doctorbass
Dec 28 2019 5:56pm
Forum: Alternative Energy
Topic: Grid tie inverters and HV battery
Replies: 14
Views: 2821

Re: Grid tie inverters and HV battery

Hello Jones, I'm back here on E-S since few month. I have less time for the forums so i sometime take a brake. Yes it is possible to supply the input with battery instead of PV power. I actually have a Solar project that will use a bank of 8 Enphase M190 micro inverters (that i got for 80cad$) all c...
by Doctorbass
Jul 24 2019 11:55pm
Forum: Alternative Energy
Topic: Question for the Wizzards...why can’t Enphase micro inverters be connected in parallel?
Replies: 17
Views: 4125

Re: Question for the Wizzards...why can’t Enphase micro inverters be connected in parallel?

On my side.. Yes they work in parallel... well at least the M190 that we today can find for about 10$ each used and still 100% working! I tried 2 in parallel from a batch that i bought from Ontario,Canada.. and YES it work !!! I got some 300W 60 cell panel and i tought it was a big sacrifice to let ...
by Doctorbass
Jun 09 2019 2:09am
Forum: Alternative Energy
Topic: Inverter recommendations? 48V sine wave, no grid tie
Replies: 27
Views: 3749

Re: Inverter recommendations, 48V sine wave, no grid tie

The cheapest way to convert 48Vdc to kW of sine AC is to get used UPS !!! I got a APC 5000VA ( 4300Watts) for 200$ no battery inside. It work really well for the cost!!! similar to this one.. but it output 208Vthat i converted to splitphase 120-120AC https://www.kijiji.ca/v-electricite/laval-rive-no...
by Doctorbass
Apr 15 2019 1:00am
Forum: Battery Technology
Topic: ULtra Compact 1800W charger + Eltek programming
Replies: 292
Views: 59670

Re: ULtra Compact 1800W charger + Eltek programming

Remmie, Any instructions for the Flatpack 2 HE 2000W 110-125Vdc model like on electricmotorcycleforum ? I tried couple serial number and voltage commands like published here for the 48v models here but i can't get it to change voltage output. I want 116.5Vdc output on one unit of model 125Vdc 2000W ...