Search found 69 matches

by Yermommy
Jul 08 2020 8:48am
Forum: E-Bike Technical
Topic: What if motor watt ratings..
Replies: 3
Views: 78

Re: What if motor watt ratings..

The amount of heat a motor can shed is extremely dependent on ambient temperature. Continuous ratings are fine the way they are, you just have to understand the profile of your motor and the environment you’re riding in. Internal temperature gauges make this pretty easy to manage on most motors.
by Yermommy
Jul 07 2020 10:15pm
Forum: E-Bike General Discussion
Topic: BBSHD Future proof/worth it 2020?
Replies: 14
Views: 290

Re: BBSHD Future proof/worth it 2020?

I ride an sv650 and I have a BBSHD with the grin phaserunner v3 on a 72v battery. It's set up with the 30t front sprocket and I'm installing a steel gear in it this weekend. The BBSHD with 50 battery amps and 96 phase amps is incredibly torquey and gives you the feeling of dropping the clutch and wr...
by Yermommy
Jun 22 2020 10:39pm
Forum: General Discussion
Topic: ASI BAC 800 Controller Red Light.
Replies: 3
Views: 182

Re: ASI BAC 800 Controller Red Light.

It sounds like the "high voltage cutoff" is being triggered. You need to reprogram the controller so it doesn't throw a fault code.
by Yermommy
Jun 14 2020 8:28am
Forum: E-Bike General Discussion
Topic: Another Stealth bomber (clone) build
Replies: 287
Views: 43675

Re: Another Stealth bomber (clone) build

That chain is going to cut your foot off if the roller ever breaks or if the chain breaks. Have you considered putting a chain guard over it? Everything else looks amazing.
by Yermommy
May 19 2020 11:02pm
Forum: E-Bike Build Threads / Photos & Video
Topic: QS205 motor locking up with Sabvoton controller 200 a
Replies: 3
Views: 342

Re: QS205 motor locking up with Sabvoton controller 200 a

The controller thinks the motor is overheated because it doesn't have a reading on the temperature sensor. Take a 1k resistor and solder it from the hall sensor ground wire to the temperature sensor wire for the Sabvoton. The motor temp is reading 130C which is the max temperature and keeping the co...
by Yermommy
May 16 2020 1:14pm
Forum: Motor Technology
Topic: Sabvoton designs, features, comparisons, etc
Replies: 17
Views: 478

Re: Sabvoton designs, features, comparisons, etc

I probably won't be going with Sabvoton ever again. Well the big takeaway for me, is that "Sabvoton" is not a company, and over the years the name has been used by multiple makers. Who actual manufactured your terrible example? Maybe others are higher quality. . . I have no idea where it came from,...
by Yermommy
May 15 2020 2:34pm
Forum: Motor Technology
Topic: Sabvoton designs, features, comparisons, etc
Replies: 17
Views: 478

Re: Sabvoton designs, features, comparisons, etc

I bought my 72150 from LAebike back in April of 2018 and had numerous problems with it from the start. It struggled to find a matching hall angle for a mxus 3k turbo I was using and constantly blew the hall sensors. I upgrade to a qs205 about a year later and it also blew through 2 sets of hall sens...
by Yermommy
May 15 2020 2:28pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Update on my Fazer 600 conversion
Replies: 11
Views: 525

Re: Update on my Fazer 600 conversion

So those gen4 batteries come in 8s packs, but aren't they really just 2 of the 4s2p modules crammed into 1 case? I found a source of gen3 but I'm worried I won't be able to easily wire the 8s format into 20s for a 72v system. I have installed 5 Gen 4 Leaf modules in my Thundercat, cell nominal volt...
by Yermommy
May 12 2020 6:20pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Update on my Fazer 600 conversion
Replies: 11
Views: 525

Re: Update on my Fazer 600 conversion

So those gen4 batteries come in 8s packs, but aren't they really just 2 of the 4s2p modules crammed into 1 case? I found a source of gen3 but I'm worried I won't be able to easily wire the 8s format into 20s for a 72v system.
by Yermommy
Mar 29 2020 11:31pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Grom Clone 72v battery upgrade recommendations
Replies: 7
Views: 767

Re: E-Grom Clone 72v battery upgrade recommendations

Most of the images are loaded now. If you want to put all 10 batteries in, you may want to consider widening the battery box. If you choose to only use 5 of those leaf batteries, this is an excellent tutorial about how to convert them from 2s2p to 4s1p
by Yermommy
Mar 29 2020 2:17pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Grom Clone 72v battery upgrade recommendations
Replies: 7
Views: 767

Re: E-Grom Clone 72v battery upgrade recommendations

I'm curious to see this build but none of your pictures have loaded. You might want to double-check how they were uploaded.
by Yermommy
Oct 19 2019 5:43am
Forum: E-Bike Technical
Topic: ENDURO EEB: Help me get rid of high speed wobble
Replies: 5
Views: 555

Re: ENDURO EEB: Help me get rid of high speed wobble

Are you running tubes or tubeless tires? Are the wheels balanced with weights? The centrifugal forces the wheel goes through at 40+ are not always apparent at lower speeds and I suspect this may be what is happening.
by Yermommy
Aug 21 2019 5:24pm
Forum: E-Bike Technical
Topic: MXUS 3K & 72 volts... OK with Phaserunner?
Replies: 20
Views: 1090

Re: MXUS 3K & 72 volts... OK with Phaserunner?

Get a Sabvoton. First I had the Phaserunner and then a Sabvoton 72150 for my other bike. Even with settings maxxed out on the PR, acceleration and going up his is slower on my lighter bike. There are two settings you should be aware of: PHASE AMPS and BATTERY AMPS. The PR's max settings for both Ph...
by Yermommy
Jan 02 2019 5:39pm
Forum: E-Bike Technical
Topic: Best controller for 20S 3kW motor?
Replies: 7
Views: 760

Re: Best controller for 20S 3kW motor?

Don't cheap out on your controller.
by Yermommy
Nov 07 2018 10:04pm
Forum: Battery Technology
Topic: Salvage EV cell advice
Replies: 6
Views: 872

Re: Salvage EV cell advice

Those are both excellent videos, thanks for providing them @mark5
by Yermommy
Nov 07 2018 9:30pm
Forum: Battery Technology
Topic: Salvage EV cell advice
Replies: 6
Views: 872

Re: Salvage EV cell advice

What's it for ? And all are connected a little to a lot of different ways. Most times they give a little big and heavy for a bike. Many theads hear on E.S. So what's it for ? I'm welding a custom frame for a small e-motorcycle to commute around the city. I figured if I get the dimensions of the bat...
by Yermommy
Nov 07 2018 7:01pm
Forum: Battery Technology
Topic: Salvage EV cell advice
Replies: 6
Views: 872

Salvage EV cell advice

I've done some reading on ES about salvage battery packs from cars like Nissan Leaf, Chevy Volt, Tesla, etc. Is it really as simple as buying something like this and assembling them into a 72v pack? Link below: https://www.ebay.com/itm/Nissan-Leaf-Battery-G2-Module-Lithium-Ion-8-volts-500-watt-66-Am...
by Yermommy
Nov 05 2018 9:46pm
Forum: Vendor Relations Corner
Topic: em3ev support?
Replies: 17
Views: 3395

Re: em3ev support?

I received my tracking number and an explanation from Moon. Based upon everybody else’s experience on ES with EM3ev, I think this truly was a combination of bad timing on their part. I won’t hold it against them in the future.
by Yermommy
Nov 02 2018 8:01pm
Forum: Vendor Relations Corner
Topic: em3ev support?
Replies: 17
Views: 3395

Re: em3ev support?

I finally got my tracking number. My package was shipped today, 11/2/18, after immediate payment on 10/20/18. Not sure what happened but I am not impressed.
by Yermommy
Oct 31 2018 9:27pm
Forum: Vendor Relations Corner
Topic: em3ev support?
Replies: 17
Views: 3395

em3ev support?

I hate to post about this publicly, but I haven't received a response from em3ev for 4 days and have no idea when my order will arrive. The arrival date is important because I live in a neighborhood with a high package theft rate. I bought a qs205 laced into a 17" moto wheel on 10/20/18. I was told ...
by Yermommy
Oct 31 2018 9:19pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 33
Views: 4071

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

I purchased a qs205 3.5t in a 17" wheel on 10/20/18 from em3ev. I was told it shipped 10/29/18 with 3 day shipping so I'll let you know when I get mine.
by Yermommy
Oct 18 2018 7:28pm
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 531
Views: 68338

Re: QS 3000w midmotor

So they want $248 for the motor plus about $100 to ship to USA. Very tempting to buy this and start playing with it before I even begin making my frame.
by Yermommy
Oct 18 2018 7:26pm
Forum: Items for Sale - Used
Topic: Kelly KLS7212S (Opened but unused)
Replies: 3
Views: 775

Re: Kelly KLS7212S (Opened but unused)

brumbrum wrote:
Oct 18 2018 1:36am
Never been used?
Yup, I soldered an XT90 onto the power cables then realized that the controller was only rated for 120a phase, not 120a battery so I bought a sabvoton. Feel free to check my build thread for more details.
by Yermommy
Oct 17 2018 9:38pm
Forum: Battery Technology
Topic: Just bought 72v 20a adjustable charger
Replies: 2
Views: 395

Just bought 72v 20a adjustable charger

So I just purchased this charger: https://www.amazon.com/gp/product/B07FLBWJRM/ Going to test it out next week and see how it handles higher currents. The charger I own right now is 72v 3a so this should provide a nice increase. Considering my batteries are rated at 1a standard charge and 2a fast ch...