Search found 365 matches

by Hwy89
Dec 06 2018 10:00am
Forum: E-Bike Technical
Topic: Ebike power cut-off due to controller
Replies: 4
Views: 85

Re: Ebike power cut-off due to controller

Battery sag. At higher speed or on hills the battery voltage drops below the 20 volt low voltage cutoff limit of the controller and it shuts off. At lower speed the voltage doesn't drop below the LVC level.
You need a higher capacity battery.
by Hwy89
Nov 26 2018 8:48am
Forum: E-Bike General Discussion
Topic: Q128H Light & Torquey 800W Hub Motor
Replies: 21
Views: 653

Re: Q128H Light & Torquey 800W Hub Motor

“What controllers are you using? I'm worried mine will have issues with 52V (I have a 52V battery).” I am using S12S sine wave controllers from BMSbattery.com with LCD5 displays. You are correct in thinking that they don’t like the 52 volt battery but it isn’t too much of a problem for me. If I full...
by Hwy89
Nov 25 2018 10:30pm
Forum: E-Bike General Discussion
Topic: Battery Fire.
Replies: 39
Views: 1320

Re: Battery Fire.

Its very weird why the video footage is edited at 3.14. You see a charging cable at 3.13 and then there's a little blip and it's gone. Why would they want to edit out the fact it was charging? Good catch BB, I wish they had given a little more info on the conditions leading up to the fire. I am cur...
by Hwy89
Nov 25 2018 10:13pm
Forum: E-Bike General Discussion
Topic: Q128H Light & Torquey 800W Hub Motor
Replies: 21
Views: 653

Re: Q128H Light & Torquey 800W Hub Motor

I have a Surly Big Dummy cargo bike with Q128h 201 rpm motors front and rear. They are 48 volt motors run at 52 volts. It aint fast, tops out at ~19 mph but it can really climb hills. With both motors pulling it rarely gets below 13 mph on the steepest hills and pulls a fully loaded gross weight of ...
by Hwy89
Nov 16 2018 11:39am
Forum: Battery Technology
Topic: 48V / 52V Dual-use battery pack feasible?
Replies: 9
Views: 281

Re: 48V / 52V Dual-use battery pack feasible?

I honestly don’t know at what level my low voltage cutoff works. When the 14s battery gets down to between 47 and 48 volts the performance is so sluggish that I stop and recharge.
by Hwy89
Nov 12 2018 5:42am
Forum: E-Bike Technical
Topic: thumb throttle for cheap Alibaba E-Bike
Replies: 10
Views: 356

Re: thumb throttle for cheap Alibaba E-Bike

Your best solution for lighting without taking the chance of smoking the controller would be to purchase a dc/dc converter and go directly (with a fuse) from the bike battery and put a switch on the handlebars.Search lights and converters.
by Hwy89
Nov 12 2018 5:24am
Forum: E-Bike Technical
Topic: Found an incomplete ebike at a thriftshop
Replies: 6
Views: 326

Re: Found an incomplete ebike at a thriftshop

That is a 9C or a 9C clone which can be a pretty fast motor and be used at fairly high voltage. Where are you located? If you were near me I would be happy to bring a battery and controller to test it for you. I’m in Arizona.
by Hwy89
Nov 12 2018 5:02am
Forum: E-Scooter and Motorcycle General Discussion
Topic: more speed!!
Replies: 4
Views: 291

Re: more speed!!

Amber, don’t you mean change the front sprocket to a larger and the rear to a smaller gear to go faster? The actual speed of the scooter in question is more related to the battery voltage and the output of the controller. Increase the battery voltage within the limits of the controller and increase ...
by Hwy89
Nov 12 2018 4:38am
Forum: Battery Technology
Topic: I’M NOT Spot Welding Using Lipo
Replies: 17
Views: 826

Re: I’M NOT Spot Welding Using Lipo

I got the last Jp welder from Riba before he got sick. Works great thousands of welds later. He is back and selling welders again. Save yourself some headaches and just buy the JP spot welder.
by Hwy89
Nov 12 2018 4:20am
Forum: E-Bike Reviews & Testing
Topic: Offer to range test E-Bike kits in the Pyrenees France
Replies: 6
Views: 406

Re: Offer to range test E-Bike kits in the Sonoran Desert

Sure,
and I would also be happy to test ebike systems in the sonoran desert. Will provide all data requested about range speed and ability.
some sarcasm is included in this post but the offer is valed.
by Hwy89
Nov 12 2018 3:54am
Forum: Battery Technology
Topic: 48V / 52V Dual-use battery pack feasible?
Replies: 9
Views: 281

Re: 48V / 52V Dual-use battery pack feasible?

I use a 14 S pack with a pair of q128 motors and S12sh controllers w/ L CD 5 meters. The motors shut down a few times on full charge but since I use throttle only it is just a matter of releasing the throttle then re-engaging to get the power back. This may sound like a pain in the ass , but it real...
by Hwy89
Nov 06 2018 4:08pm
Forum: E-Vehicles General Discussion
Topic: Problem on Q128h Motor with s12sh controller 40A
Replies: 7
Views: 303

Re: Problem on Q128h Motor with s12sh controller 40A

What is the voltage of the battery when the cut out occurs. I have a pair of q128h motors installed on a Big Dummy cargo bike with a pair of S12s controllers and LCD 3 displays. When my 14s pack is full I get periodic cutouts similar to what you described. As soon as my battery voltage decreases to ...
by Hwy89
Nov 03 2018 10:48am
Forum: Alternative Energy
Topic: Help converting an RV house battery to lithium
Replies: 8
Views: 593

Re: Help converting an RV house battery to lithium

The RV is a 25’ Jayco bumper pull trailer. The only high amp loads would be the tounge jack and the slide motor. I will measure the amp draw on those before purchasing the DC/DC converter. I have been researching a solar charge controller that can be set up to output 29.4 volts to match the 7 s pack...
by Hwy89
Nov 02 2018 9:51am
Forum: Alternative Energy
Topic: Help converting an RV house battery to lithium
Replies: 8
Views: 593

Re: Help converting an RV house battery to lithium

Thanks Alan B, I hadn’t thought of the 24 volt system. I have several 7s packs already built that I use in series for my 14s bike. I could make several spare bike packs and swap them in and out of house battery as needed. So I would need to find a 24/12 volt converter beefy enough to handle the load...
by Hwy89
Nov 02 2018 2:01am
Forum: Alternative Energy
Topic: Help converting an RV house battery to lithium
Replies: 8
Views: 593

Help converting an RV house battery to lithium

It is time to replace the lead in my RV. I am heading out in a few weeks to spend the winter dry camping in the Sonoran Desert. I am currently in negotiations with a seller to get another Tesla module so I will have 444 18650 cells to play with. I plan on taking 2 of my 180 watt solar panels which p...
by Hwy89
Oct 27 2018 8:03pm
Forum: EV Business World
Topic: Report: China cutting rare earths output
Replies: 5
Views: 315

Re: Report: China cutting rare earths output

Yeah the SP has me concerned because I own a truck load of it.
But my DD has me convinced that they are legit so I’m hanging on.
I think there will be an announcement of Govt. intervention to rebuild the US supply chain in the near future. The DOD can no longer buy from China.
by Hwy89
Oct 27 2018 8:49am
Forum: EV Business World
Topic: Report: China cutting rare earths output
Replies: 5
Views: 315

Re: Report: China cutting rare earths output

Punx0r wrote:
Oct 27 2018 4:41am
Time to invest in rare earth futures, maybe?
Check out UCORE rare metals V UCU
by Hwy89
Oct 26 2018 5:46pm
Forum: Items Wanted
Topic: Tesla slave BMS
Replies: 3
Views: 188

Re: Tesla slave BMS

Are these what you are looking for?
Never mind, photos will not load.
I have three circuit boards removed from Tesla modules out of a Mercedes 2014 (model B ?)
They are free if you will pay postage.
I will try again later to post tha picture.
by Hwy89
Oct 25 2018 10:50am
Forum: E-Bike Build Threads / Photos & Video
Topic: Switching shifter cabelling
Replies: 5
Views: 177

Re: Switching shifter cabelling

I’ve done just that on five builds so far and only on one did I have to replace the cable with a longer one. The only drawback that I’ve found is relearning the action on a backwards and upside down shifter.
by Hwy89
Oct 16 2018 11:57am
Forum: E-Bike General Discussion
Topic: Best price on EGO 56v 7.5A Pack, handle 30 amps?
Replies: 7
Views: 236

Re: Best price on EGO 56v 7.5A Pack, handle 30 amps?

Thanks, I had looked at that ad but didn’t view the options. Too bad I don’t need a leaf blower.
by Hwy89
Oct 16 2018 10:49am
Forum: E-Bike General Discussion
Topic: Best price on EGO 56v 7.5A Pack, handle 30 amps?
Replies: 7
Views: 236

Re: Best price on EGO 56v 7.5A Pack, handle 30 amps?

Carl, can you provide a link to that sale?
Is it Home Depot?
by Hwy89
Oct 12 2018 12:08pm
Forum: E-Bike General Discussion
Topic: Mounting and security options for rectangular battery...
Replies: 7
Views: 309

Re: Mounting and security options for rectangular battery...

Triangle bag works for me on my Big Dummy.
Photo taken under a bridge on the Nachez Trace parkway during a storm 2 weeks ago.
by Hwy89
Oct 08 2018 2:48pm
Forum: E-Bike General Discussion
Topic: Motor advice for Heavy Trike
Replies: 9
Views: 390

Re: Motor advice for Heavy Trike

oldskoolhead wrote:
Oct 07 2018 7:15pm
are the rear wheels not connected via a shaft?
To be honest, I had not really thought about the axle connecting the two rear wheels.
Are you suggesting a larger motor in one rear wheel or the fact that two rear motors would act in unison because they are connected?
by Hwy89
Oct 07 2018 4:46am
Forum: E-Bike General Discussion
Topic: Motor advice for Heavy Trike
Replies: 9
Views: 390

Re: Motor advice for Heavy Trike

I don't want to derail this thread but I have a sun semi recumbent trike that currently has a 500 w dd motor in the 16" front wheel. This worked fine on flat pavement for my 130 pound wife but I am passing it along to a friend who is at least 275 pounds and is not likely to pedal very hard. I am thi...
by Hwy89
Oct 07 2018 4:30am
Forum: E-Bike General Discussion
Topic: Ebike to tow a caravan?
Replies: 45
Views: 1022

Re: Ebike to tow a caravan?

I am an old guy who has been towing trailers for most of his life. Believe me, there Is nothing more scary than an emergency stop when you are in a vehicle that is too light to control the trailer that is pushing it. Trailer brakes are good but never count on them. When I'm not riding my solar charg...