Search found 103 matches

by x.l.r.8
Mar 23, 2018 7:42 am
Forum: Battery Technology
Topic: Ebike (lead acid) stored over winter in un heated garage question
Replies: 8
Views: 351

Re: Ebike (lead acid) stored over winter in un heated garage question

If they were kept charged the freezing point is something like -60 c. I don’t believe it got that cold in Toronto this year. However batteries don’t like being cold hence the huge reduction in CCA in car batteries, even worse in the SLA batteries, try a few charge cycles and keep it plugged in if yo...
by x.l.r.8
Mar 15, 2018 11:03 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Need Help - New Batteries Only Charge Halfway
Replies: 9
Views: 307

Re: Need Help - New Batteries Only Charge Halfway

80v is an actual reading or just indicated by the bars? you need to see what you are drawing by using a cheap meter https://www.aliexpress.com/item/Battery-Tester-TK15-High-Precision-LiFePO-Lithium-Lead-Acid-Battery-Testers-Coulomb-Counter-50A/32823138463.html?spm=a2g0s.8937460.0.0.m7wCsB https://ww...
by x.l.r.8
Mar 05, 2018 5:57 am
Forum: Battery Technology
Topic: Advanced Chargers
Replies: 6
Views: 286

Re: Advanced Chargers

I got a luna advanced charger about a week before I decided to go to 52v and dropped the money on a Satiator and I am glad i did, I have a 72v pack now along with 65v pack and its so convenient to use. And silent
by x.l.r.8
Feb 23, 2018 3:41 am
Forum: Large EV General Discussion
Topic: Tesla PEM heat sink material required
Replies: 3
Views: 242

Re: Tesla PEM heat sink material required

The problem appears around 40,000 or 5 years. The answer is a remanufactured PEM at $10,000 that has a 3 year warranty. They simply replace the compound. The goal for them it seems is to get people to upgrade to the 3.0 battery pack with an upgraded PEM that uses better quality IGBT’s. If a solution...
by x.l.r.8
Feb 22, 2018 12:45 am
Forum: Large EV General Discussion
Topic: Tesla PEM heat sink material required
Replies: 3
Views: 242

Tesla PEM heat sink material required

Okay, I have a tesla roadster that has the well documented PEM failure The answer seems to be replacement of the thermal layer under the IGBT's https://teslamotorsclub.com/tmc/threads/roadster-pem-failure.88028/ But there is little conclusion as to what that may be. I'm hoping the collective minds w...
by x.l.r.8
Jan 23, 2018 6:23 am
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 93
Views: 3443

Re: Mid drive vs Hub Motor for 10000 watt project

That controller looks suspiciously like the daymak em1. i would go for a recognized controller rather than one of these. That just my personal opinion though
by x.l.r.8
Jan 11, 2018 11:12 pm
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 93
Views: 3443

Re: Mid drive vs Hub Motor for 10000 watt project

If you have the stock tires that are designed for e-bikes that will throw your balance out at those speeds. Fortnine.ca are pretty good at prices and delivery
by x.l.r.8
Jan 02, 2018 9:16 pm
Forum: E-Bike Technical
Topic: What lcs display is compatible with my controllers?
Replies: 8
Views: 449

Re: Unlock speed with lcd display

None of your links actually work so its a little hard to know exactly what you have. your guess is correct the controller will be the only way to unlock more speed (that and a lot more pedaling) but you are probably expecting a lot from a 36v 500w motor with an 8Ah battery. that will assist your ped...
by x.l.r.8
Jan 01, 2018 4:07 pm
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 93
Views: 3443

Re: Mid drive vs Hub Motor for 10000 watt project

I’m with the controller to. Your battery is 3 times better than mine and I get easily equal your performance. The motor will do 75 km/h with 72v so any of the proven controllers (Kelly, power velocity, sabvoton) would probably do what you want. All should plug up to your CA. I wouldn’t go charging t...
by x.l.r.8
Dec 29, 2017 3:02 pm
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 93
Views: 3443

Re: Mid drive vs Hub Motor for 10000 watt project

Something sounds wrong, Is the CA verifing your voltage/Amps because I would expect the increase in voltage to be pushing closer to 60km/hr. Its a super heavy bike but so are a lot of DUI scooters and they are going 60km/hr for 50km with pretty much an upgraded controller and good battery reserves a...
by x.l.r.8
Dec 24, 2017 6:58 am
Forum: Items for Sale - New
Topic: Lebowski PCBs through hole For sale. £9 each before shipping
Replies: 28
Views: 2713

Re: Lebowski PCBs through hole For sale. £9 each before shipping

Im ready to take the plunge, are there still boards available or do I need to add my name to a list?
by x.l.r.8
Dec 23, 2017 11:22 pm
Forum: Motor Technology
Topic: Mid drive vs Hub Motor for 10000 watt project
Replies: 93
Views: 3443

Re: Mid drive vs Hub Motor for 10000 watt project

wondering how you are going to try and license and insure this once its done, mrcrash had the same problems. if 55kph is dissapointing on an bike designated to go 32kph then bite the bullet and get a motorbike, even a reasonable sized motorbike will do what you want, or build an electric motorcycle ...
by x.l.r.8
Dec 23, 2017 10:42 pm
Forum: E-Vehicles General Discussion
Topic: Frustrated Newbie cant get any power
Replies: 6
Views: 458

Re: Frustrated Newbie cant get any power

did the xt90 have a green marking on it (they do an antispark version) otherwise even with power off at the controller switch one expects a spark. As previously mentioned you need a voltmeter to check the battery for output voltage before you even try to investigate further. saying it wont run on an...
by x.l.r.8
Dec 23, 2017 8:51 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Supplimentary batteries for a ZEV scooter
Replies: 5
Views: 310

Re: Supplimentary batteries for a ZEV scooter

why not buy a second charger and charge at work if able. 2nd choice and probably the easiest get a second pack the same as the 1st in capacity and either fix it somewhere and swap plugs over for the way home. that way you have a second pack and if one goes you still have your scooter. Yes you have t...
by x.l.r.8
Dec 23, 2017 3:55 am
Forum: E-Bike General Discussion
Topic: Car replacement in London/Other Cold Weather
Replies: 9
Views: 618

Re: Car replacement in London/Other Cold Weather

Middlesex, from around Greenford to around Hillingdon is served by great bike paths used by no one. Hillingdon/ Uxbridge is the end of the line for the train and its a slow painful tube into and across London, not as painful as driving though. I used a bike daily fir 15 years from Hillingdon to Whit...
by x.l.r.8
Dec 23, 2017 3:27 am
Forum: E-Bike General Discussion
Topic: Winter Projects ... ?
Replies: 24
Views: 1471

Re: Winter Projects ... ?

https://drive.google.com/open?id=1-fQBUcRvlsKyHA3L6V50cPVrBksts-7V Motoremmo project. Winter bike using the 52v battery I use in my big dui scooter. It goes plenty fast enough and I want to make it super light, I have some Scooter winter tires and I want to make the pedals geared to pull away from l...
by x.l.r.8
Dec 23, 2017 2:30 am
Forum: E-Bike General Discussion
Topic: Standard Help me build an Ebike thread
Replies: 24
Views: 1089

Re: Standard Help me build an Ebike thread

why not one of these, it has pretty much all the info you need. https://www.aliexpress.com/item/Battery-Tester-TK15-High-Precision-LiFePO-Lithium-Lead-Acid-Battery-Testers-Coulomb-Counter-50A/32823138463.html?spm=a2g0s.8937460.0.0.YfcV9h you can move it bike to bike and not have to have 48+v supply ...
by x.l.r.8
Dec 13, 2017 12:45 am
Forum: E-Bike Non-hub Motor Drives
Topic: Golden Motor BLT behaves strange
Replies: 3
Views: 299

Re: Golden Motor BLT behaves strange

Have you played with the settings, like put it to 60 degrees. Or swap it to reverse direction. Also the voltage is only set at 24v. It reminds me of a hall sensor out or a phase wire mismatch.
by x.l.r.8
Dec 12, 2017 10:15 pm
Forum: E-Bike Technical
Topic: Is this a sine wave controller?
Replies: 5
Views: 512

Re: Is this a sine wave controller?

$120 is pretty reasonable, in a few years this will be the standard but right now there are factories full of square wave controllers and they are the reason you have $40 controllers on ebay, but the real fact is the stock one its probably as good, these are cheap replacements rather than performanc...
by x.l.r.8
Dec 12, 2017 3:25 am
Forum: Motor Technology
Topic: Scooter Hub Rusted Inside
Replies: 1
Views: 214

Re: Scooter Hub Rusted Inside

in my short time I have ascertained this. the controller is exactly that, your motor is only rated at a certain wattage, but probably will take more. The battery is simply a power source and it will 'sag' under load which is why you are seeing lights go out climbing hills. Most controllers have a lo...
by x.l.r.8
Dec 11, 2017 12:15 pm
Forum: Battery Technology
Topic: Battery Build Question
Replies: 3
Views: 353

Re: Battery Build Question

Best off taking the packs down and making them fit your application rather than try and fit them as packs
https://drive.google.com/open?id=1tndGp ... WA7thBT9Yd
by x.l.r.8
Dec 11, 2017 12:14 pm
Forum: Battery Technology
Topic: Battery Build Question
Replies: 3
Views: 353

Re: Battery Build Question

The LG cells are not great tbh, the Samsung cells are better. I made a 7p13s for a emmo urban and it’s great. I made a 14s version for my motorino and it’s range is not great as I have it going 45km/hr most of the time. The Samsung cells I made the same battery and got to work and back twice, just b...
by x.l.r.8
Dec 09, 2017 3:41 pm
Forum: E-Bike Technical
Topic: Is this a sine wave controller?
Replies: 5
Views: 512

Re: Is this a sine wave controller?

i have this controller. its 1500 watts peak, not a sine wave and probably only marginally better than a stock controller. there are some tried and tested controllers that can be had for cheaper and give the right power (sunwin and greentime for example) that will serve you far better.
by x.l.r.8
Dec 06, 2017 11:58 pm
Forum: Items for Sale - Used
Topic: Yeti 303 RD-h frame and Fox dhx 5 Shock
Replies: 2
Views: 484

Re: Yeti 303 RD-h frame and Fox dhx 5 Shock

Someone buy this, it’s too tempting to look at.
by x.l.r.8
Dec 06, 2017 5:46 am
Forum: Items Wanted
Topic: 20 inch rim for magic pie
Replies: 1
Views: 232

20 inch rim for magic pie

looking for a 20 inch rim for a magic pie 3, its probably the same as the 2-5 models. I thought I would try here before trying again at the source as I never get a reply from there. I'm in Toronto Canada but travel extensively to Miami if that helps