Search found 81 matches

by Darren2018
Sep 29 2019 5:37am
Forum: Items Wanted
Topic: BMS/PCB designer
Replies: 0
Views: 106

BMS/PCB designer

I am looking for someone who is able to design me a simple BMS, if you can do this and would be willing to help (payment would obviously be included) or you know somebody with experience in this type of PCB design please could you send me a PM.
by Darren2018
Aug 14 2019 6:31am
Forum: Items for Sale - New
Topic: Wholesale 18650 cells (NEW) for UK/EU
Replies: 36
Views: 2440

Re: Wholesale 18650 cells (NEW) for UK/EU

Couple of updates. Based on forum requests, I have a reasonably large amount of pure nickel strip on the way, about 30kg in total. Thickness ranging from 0.15 to 0.3, and widths from 6mm to 25mm. This will be available from the UK warehouse on a next day basis in the UK. I also have cell connector ...
by Darren2018
Aug 08 2019 2:54pm
Forum: Battery Technology
Topic: Charging without CV or CC on a type 2 EV station?
Replies: 5
Views: 206

Re: Charging without CV or CC on a type 2 EV station?

At a more basic level it sounds like you want to just charge in Bulk mode, aka CC-only, stopping **at** a spec'd termination voltage, which will be higher than where the bank would settle if you were to let it "rest" a few hours isolated. CV charging aka Absorb is after that setpoint is reached, wh...
by Darren2018
Aug 08 2019 2:53pm
Forum: Battery Technology
Topic: Charging without CV or CC on a type 2 EV station?
Replies: 5
Views: 206

Re: Charging without CV or CC on a type 2 EV station?

I think you misunderstand, there is no current limiting on those stations. If you give the 16A signal for instance it will activate the solenoid but if you pull more it will disengage and throw an error. You need a charger connected to those that are within the current they are rated for like <16A,...
by Darren2018
Aug 08 2019 5:38am
Forum: Battery Technology
Topic: Charging without CV or CC on a type 2 EV station?
Replies: 5
Views: 206

Charging without CV or CC on a type 2 EV station?

Does anyone know anything about this? I will be making a 72V battery and would like to charge at around 45A, I don't need CV as this will be a range boost setup only and I will be using a programable BMS and coulomb meter with a relay as a safety cut off. I was wondering if you could use the current...
by Darren2018
Aug 02 2019 3:43pm
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

MJSfoto1956 wrote:
Aug 02 2019 2:02pm
Darren2018 wrote:
Jul 31 2019 8:19pm
Thanks for all of the info.
You'll let us know if you get the PV BT module to work with your BAC?

M
Of course.
by Darren2018
Jul 31 2019 8:45pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 418

Re: 0-120V 0-30A variable rectifier/amps/charger, is it ok?

Yes its awesome and works perfectly :banana: :banana: :banana: :banana: :banana: 5/5 Have you got one of these Leffex? If you do what voltages and currents have you tried? Is the output stable and reliable? I have tried it at maximum about 92,5v charging at 20-25A. So I guess the maximum is either ...
by Darren2018
Jul 31 2019 8:19pm
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

MJSfoto1956 wrote:
Jul 30 2019 8:00pm
Darren2018 wrote:
Jul 30 2019 4:46pm
... I wonder if the 5V throttle will be enough to power this?
As I understand it, the answer is yes. These things don't use much power.

M
Thanks for all of the info.
by Darren2018
Jul 31 2019 3:34pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 418

Re: 0-120V 0-30A variable rectifier/smps/charger, is it ok?

leffex wrote:
Jul 31 2019 1:58pm
Yes its awesome and works perfectly

:banana: :banana: :banana: :banana: :banana: 5/5
Have you got one of these Leffex? If you do what voltages and currents have you tried? Is the output stable and reliable?
by Darren2018
Jul 31 2019 3:32pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 418

Re: 0-120V 0-30A variable rectifier/smps/charger, is it ok?

flippy wrote:
Jul 31 2019 9:07am
they are secondhand hacked server power supplies usually meant for telecom towers.
Do you know how to make one?
by Darren2018
Jul 30 2019 4:46pm
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

Do you have any pictures or a wiring diagram? This would be really cool if I could have the PV dashboard with the BAC4000 hardware. This is diagram is for a VOTOL controller but is generic enough. However, please double check everything though as I may have made a mistake somewhere. In particular t...
by Darren2018
Jul 30 2019 3:59pm
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

... I like what Powervelocity are doing with their bluetooth controllers and they have the nicest functioning dash I have seen so far. They managed to include GPS, weather, temps, BMS data and plenty of other features ... +1 on their Bluetooth module/app (which can work with pretty much any control...
by Darren2018
Jul 30 2019 10:59am
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 418

Re: 0-120V 0-30A variable rectifier/smps/charger, is it ok?

Does anyone have any information regarding these?
by Darren2018
Jul 30 2019 9:31am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

Not yet Rockstar. Nothing will be ordered until I know exactly how everything will fit together, measure twice cut once right. This is how far I have got with the plan. The vector typhoon frame will allow me to run an 18" rim with a 3-3.5" tyre, this combined with the 14T on the rear and Schlumpf hi...
by Darren2018
Jul 28 2019 10:17am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

This is something I have been watching for a while but it's still quite a new product and I am worried about "bugs" that may have not been ironed out yet. I like what they are doing with this though and charging through the motor is a really nice idea!
by Darren2018
Jul 28 2019 1:37am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

I am now looking at the various controllers available and I think I have decided on either a Sabvoton 72150 (unlocked) or a ASI BAC4000. I am looking for a buttery smooth instant throttle response with plenty of tuning potential/features so I may have already decided on the BAC4000 but if anyone can...
by Darren2018
Jul 28 2019 1:01am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

I will most likely go for the Schlumpf high speed drive as I like the 1:2.5 ratio and all of the main high powered ebike manufactures seem to use it. These over drive systems from Schlumpf seem to be the best from what I have read and I actually like the fact that it does not need a cable system. As...
by Darren2018
Jul 27 2019 5:49pm
Forum: Battery Technology
Topic: 0-120V 0-30A variable rectifier/amps/charger, is it ok?
Replies: 12
Views: 418

0-120V 0-30A variable rectifier/amps/charger, is it ok?

Does anyone have any information or a review on this charger? https://www.aliexpress.com/item/32999030765.html HTB1EDu3U3HqK1RjSZJnq6zNLpXa5.jpg HTB1ROKVUYvpK1RjSZPiq6zmwXXaz.jpg These chargers are not too expensive but the modules that are not yet modded seem really cheap. I wonder how difficult it...
by Darren2018
Jul 27 2019 12:12am
Forum: Battery Technology
Topic: Quick modifactions for the Sunkko 709AD
Replies: 0
Views: 141

Quick modifactions for the Sunkko 709AD

I just thought I would show a few quick mods I did for the Sunkko 709AD. My goal was to increase the efficiency of this welder as I like to weld really fast and I hate waiting for things like wires, circuitry or the welding tips to cool down. I have a "boss welder" that puts out way more amps and we...
by Darren2018
Jul 21 2019 9:10am
Forum: Battery Technology
Topic: mega copper battery spotwelder
Replies: 19
Views: 1037

Re: mega copper battery spotwelder

com'n slowly but surely just getting all the little things to happen to arrive at welding...feels like im climbing a mountain made of honey :D I know, it can be really annoying when people mess up the order or take forever to send things. I might mod my Sunkko whilst I am waiting for the results of...
by Darren2018
Jul 20 2019 10:32pm
Forum: Battery Technology
Topic: mega copper battery spotwelder
Replies: 19
Views: 1037

Re: mega copper battery spotwelder

Any updates on this? I'd love to know if this can actually weld copper reliably or not.
by Darren2018
Jul 06 2019 4:40am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

Resellers usually rent the tool for rimming the BB, if you can’t improvise and make one yourself. Those who are making/selling tadpole trikes are the ones to see for a Schlumpf HS drive. Brakes installation and tuning is not a problem for those with mechanical consciousness. Only newbies try to rid...
by Darren2018
Jul 06 2019 2:02am
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

The schlumpf hs drive is good but, very expansive, PITA to install, requires rimming your frame’s BB, and spare parts are long to get. No matter the solution that you end up with, keep in mind that you must be able to pedal the big bike home in case of empty battery, or system failure. How do you r...
by Darren2018
Jul 05 2019 4:13pm
Forum: E-Bike General Discussion
Topic: Building an EEB with a QS 205... Help needed
Replies: 68
Views: 2211

Re: Building an EEB with a QS 205... Help needed

Does anyone know of an online calculator for gearing? I have seen quite a few but none of them use the circumference of the wheel. I have been told that pedalling is not an option but I was wondering if a 52T on the front and a 11T on the rear along with a 17" rim with a high profile tyre would amo...