Search found 7447 matches

by Doctorbass
Jun 11 2021 9:28pm
Forum: Motor Technology
Topic: NXT ERT display: my attemp to fix it
Replies: 0
Views: 30

NXT ERT display: my attemp to fix it

Note; I have no wirring harness for connections to the BAC8000 ... yet... This BAC8000 apparently is locked from ERT and it is not possible to reprogram it unless i get help from Alan? I did not attempt to connect it with wrong harness, ex: litespeedbike eggrider harness ... yet It overload the USB ...
by Doctorbass
Jun 11 2021 12:58pm
Forum: Motor Technology
Topic: recovering a locked ERT BAC8000 to eggrider
Replies: 0
Views: 38

recovering a locked ERT BAC8000 to eggrider

Hi guys, well as few might know i pulled the trigger and bought a sur ron. I want to add bac8000 to it and my local sur ron vendor sold me a one he had from ERT that he was not able to work with and he now offer the litespeed kit because things wend not so good with ERT. So i might need your help gu...
by Doctorbass
Jun 10 2021 12:22pm
Forum: Items Wanted
Topic: Wanted: ELTEK flatpack S 1000w 24v
Replies: 0
Views: 28

Wanted: ELTEK flatpack S 1000w 24v

If you guys have one to offer let me know.

Not the HE serie but the S serie.

Thanks.

Doc
by Doctorbass
Jun 01 2021 9:31am
Forum: EScooters/EMotorcycles
Topic: Sur Ron - I pulled the trigger
Replies: 5
Views: 299

Re: Sur Ron - I pulled the trigger

Yeah Potting outch !!! that kind of material has been made by alien i'm sure!!! it is: - a bit sticky -plastic -gummy -hard to take appart - hard to slice thru - the most difficult part was to take care of the cell below as i was not sure if the transparent plastic spacer on top had a bottom plane o...
by Doctorbass
May 31 2021 10:38pm
Forum: EScooters/EMotorcycles
Topic: Sur Ron - I pulled the trigger
Replies: 5
Views: 299

Re: Sur Ron - I pulled the trigger

Thanks Luke! I promissed myself that prior to enjoy that great SUR RON , I will finish the Doctorbass upgrade of the little quad off road atv that i offered to my nephew. He really deserve more than 800W and 36V lead acid!! So i will bring it to next level!! 4kW brushless and a old ZF2.8 and 1500W r...
by Doctorbass
May 31 2021 7:38pm
Forum: EScooters/EMotorcycles
Topic: Sur Ron - I pulled the trigger
Replies: 5
Views: 299

Sur Ron - I pulled the trigger

Well after 14 years here playing, modding, testing with hub motor ebikes... ...I finally decided to try the mid drive technology :) I pulled the trigger on one Lite Bee X ! I ordered one of these great Sur Ron that i see growing in popularity and part of my decision was seeing Luke having fun with o...
by Doctorbass
May 22 2021 10:54pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5503
Views: 637438

Re: Sur-Ron - New Mid drive Bike

Would anyone know if my battery would have drained down completely? I have my own modified power supply to charge the sur-ron. However, if I plug in the charger and disconnect the AC power to the charger, the charger still stays on from the power of the battery. This drained my battery down very qu...
by Doctorbass
May 09 2021 10:22pm
Forum: Items for Sale - New
Topic: Li-ion 60v58ah for Sur Ron x
Replies: 21
Views: 1340

Re: Li-ion 60v58ah for Sur Ron x

I'm Interested. Do you have pictures of the inside?

Cell holders, nickel, spotweld quality, BMS, wire size inside, mecanical assembly etc?

Doc
by Doctorbass
May 09 2021 10:03pm
Forum: Battery Technology
Topic: A123 AMP20M1HD-A Battery pack kit
Replies: 719
Views: 120492

Re: A123 AMP20M1HD-A Battery pack kit

Hey Agniusm,

I just wanted to let you know that my 40Ah 16s2p A123 pack using these kit is still working very well! after 8 years at least! :bigthumb:

Doc
by Doctorbass
May 08 2021 9:39pm
Forum: EScooters/EMotorcycles
Topic: Sur-Ron - New Mid drive Bike
Replies: 5503
Views: 637438

Re: Sur-Ron - New Mid drive Bike

stepus wrote:
May 06 2021 5:34am
Hi, can you measure motor winding resistance ?
Yes it's done now, go back to my post :wink:

Doc
by Doctorbass
May 06 2021 11:41am
Forum: General Discussion
Topic: Historic "Deathbike" stolen in Oregon, $1500 reward
Replies: 7
Views: 662

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: 5503
Views: 637438

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: 5503
Views: 637438

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: 5503
Views: 637438

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: 5503
Views: 637438

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: 101

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: 5503
Views: 637438

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: 369

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: 164

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: 1688
Views: 271471

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: 3005

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: 3141

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: 840

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: 20548

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: 20548

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