Search found 432 matches

by Hwy89
May 25 2020 8:32am
Forum: E-Bike Technical
Topic: PAS sensor for Big Dummy
Replies: 4
Views: 346

Re: PAS sensor for Big Dummy

Thanks AW. I learned something new. Google pointed me toward terrorist groups and fertility goddesses not bike related😁
by Hwy89
May 24 2020 4:55pm
Forum: E-Bike Technical
Topic: PAS sensor for Big Dummy
Replies: 4
Views: 346

Re: PAS sensor for Big Dummy

I reamed out the center of the magnet ring so tha it would fit over the crank but that left a 1” space between the ring and anything to attach the sensors to (yes two sensors for dual motors). I rummaged around in the plumbing box and found that the tightening ring on a 1 1/2 PVC union just fit with...
by Hwy89
May 22 2020 12:35pm
Forum: E-Bike Technical
Topic: PAS sensor for Big Dummy
Replies: 4
Views: 346

PAS sensor for Big Dummy

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B26CFC8F-7838-46AC-84C5-5BD8FBC75745.jpeg (81.56 KiB) Viewed 129 times
Is there a PAS sensor for this type of bottom bracket?
by Hwy89
May 18 2020 11:51am
Forum: Battery Technology
Topic: 72v Battery showing 80v on multimeter
Replies: 6
Views: 168

Re: 72v Battery showing 80v on multimeter

A 72 volt battery is most likely 20 cells or groups of cells connected in series. These groups of cells will have a working voltage range of 4.2 volts down to around 3 volts. If you divide the 80 volts you measured by 20 cells you will find that each group is at 4 volts. Almost fully charged.
by Hwy89
May 11 2020 12:06pm
Forum: Alternative Energy
Topic: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery
Replies: 15
Views: 525

Re: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery

I hope you are feeling better today.
I kind of expected more than .56 amps at 52 volts but I’m used to working with larger panels. I guess every little bit helps but you have proved that it wouldn’t be worth spending a couple hundred dollars on a charge controller.
by Hwy89
May 10 2020 10:04am
Forum: Alternative Energy
Topic: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery
Replies: 15
Views: 525

Re: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery

I have one of those Victron Smart Solar controllers on my camper charging a large 6 s battery bank. I down convert to 12v for the camper circuits and use a 24v inverter for AC applications. It works very well and I love being able to monitor it with my cell phone via Bluetooth. In Amberwolf’s situat...
by Hwy89
May 09 2020 11:27am
Forum: Alternative Energy
Topic: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery
Replies: 15
Views: 525

Re: MPPT (or whatever) to use 4 series small panels as "charger" for 14s EIG NMC battery

If you put three of the panels in series you could feed output directly to your 14s battery as long as you have a BMS or other method of protecting the battery from overcharge. You could also connect them through a switch and only feed current to the battery while you are riding.
by Hwy89
Apr 11 2020 12:17pm
Forum: E-Bike Technical
Topic: Strange ebike shutdown
Replies: 3
Views: 146

Re: Strange ebike shutdown

That battery has had an incredible lifespan. You really can’t fault it for getting a little weak in it’s old age. My guess is that one or more of the cell groups are faltering and the BMS is shutting down. It isn’t unusual for the voltage to come back up a little when the battery is at rest and rese...
by Hwy89
Apr 02 2020 12:10am
Forum: E-Bike General Discussion
Topic: Help building battery triangle 20s10p
Replies: 27
Views: 883

Re: Help building battery triangle 20s10p

OK, cool. Now do you have a specific question?
by Hwy89
Apr 01 2020 9:06am
Forum: E-Bike General Discussion
Topic: Help building battery triangle 20s10p
Replies: 27
Views: 883

Re: Help building battery triangle 20s10p

I put together a 14s 12p triangle pack a couple of seasons ago and think I know what you are asking for. First if all decide what you will use to cover and contain the pack. I used a large Ibera triangle bag which fit the bike perfectly but it had a horizontal zippered opening that wouldn’t allow th...
by Hwy89
Mar 08 2020 11:17am
Forum: Battery Technology
Topic: Power Inverter use with 48 Volt Li Battery Pack
Replies: 8
Views: 831

Re: Power Inverter use with 48 Volt Li Battery Pack

Your AC unit will draw between 1200 and 1600 Watts with a higher spike each time the compressor kicks on. The individual outlets on that inverter are rated at 1500 watts so first thing to do would be to make a “Y” adaptor and plug into 2 of the outlets. You haven’t said what the amp hour capacity of...
by Hwy89
Mar 08 2020 9:55am
Forum: E-Bike Technical
Topic: NEED HELP !!! Cut off when motor wheel on ground
Replies: 19
Views: 1305

Re: Need help. Power cut off when wheel on the ground

What make is the display and controller? If it is an LCD 3 or 5 display there is a way to bypass it and just use the throttle. Most likely other makes can also be bypassed. Where are you? There may be an Endless Sphere member nearby willing to help. I was in a similar situation last year with my wir...
by Hwy89
Mar 06 2020 9:19pm
Forum: Battery Technology
Topic: Power Inverter use with 48 Volt Li Battery Pack
Replies: 8
Views: 831

Re: Power Inverter use with 48 Volt Li Battery Pack

Pretty sure the answer is no. I use 6s batteries, two in series to drive my bike or several in parallel to power a 24 volt inverter. Also use a 24 to 12 volt dc/dc converter to power the 12 volt system. The whole thing is powered by a 260w solar panel. Been camped in the desert all winter and only s...
by Hwy89
Mar 02 2020 1:57pm
Forum: E-Bike Technical
Topic: E Bike Kit with torque sensor like Yamaha Bosch etc
Replies: 26
Views: 1522

Re: E Bike Kit with torque sensor like Yamaha Bosch etc

This is a valid topic that deserves some attention. I have been researching torque PAS and have only been able to find two alternatives. Buy the torque sensor that Grin offers along with a cycle analyst to make it work or buy the TSDZ2 torque sensing mid drive motor. I’ve been trying to put together...
by Hwy89
Feb 20 2020 1:20am
Forum: E-Bike General Discussion
Topic: Hunting/mountain E-Bikes
Replies: 35
Views: 2436

Re: Hunting/mountain E-Bikes

Just my opinion but if you are buying a factory built E bike you would be better off checking out the Rad Bike models. You are still getting a Chinese bike but from an American Company with a decent reputation. Just saying.
by Hwy89
Feb 03 2020 12:38am
Forum: E-Bike General Discussion
Topic: 48V500W Rear Driving BikeConversion Kit
Replies: 28
Views: 1594

Re: 48V500W Rear Driving BikeConversion Kit

It sounds like the BMS is shut down in the battery. Charge it and leave it on the charger for 24 hours to let the BMS try to balance. The manual that came with the last set of batteries I bought said to charge with the red switch in the on position.
by Hwy89
Jan 30 2020 12:53am
Forum: E-Bike Technical
Topic: Battery pack made from several small modem packs.
Replies: 32
Views: 1379

Re: Battery pack made from several small modem packs.

The answer is yes and no. I had, at one time, a whole pallet of two cell packs each with their own 8.4 volt BMS. I separated, tested and built several 12 S 12 P packs with the cells which worked fine but it was a lot of work. I decided it would be much easier and quicker to just put a bunch of the t...
by Hwy89
Jan 25 2020 10:31pm
Forum: E-Bike General Discussion
Topic: How to use a 250W front hub motor with an aluminium for and survive?
Replies: 8
Views: 849

Re: How to use a 250W front hub motor with an aluminium for and survive?

Where do you find the "C" washers for sale?
Installed a motor today on a fork with the most pronounced "lawyers lips I've ever seen. This evening reading this thread decided I'd better get C washers.
by Hwy89
Jan 22 2020 7:58am
Forum: E-Bike General Discussion
Topic: Charge bike with gasoline generator While driving?
Replies: 20
Views: 1309

Re: Charge bike with gasoline generator While driving?

Cheaper, lighter and more efficient to just get one of those gas bike kits.
by Hwy89
Jan 07 2020 1:08am
Forum: E-Bike Technical
Topic: Push Button Throttle
Replies: 19
Views: 700

Re: Push Button Throttle

Trying to understand why you would want a full throttle button rather than a smooth controllable throttle which can also be used as a full throttle button. Thumb throttles are probably less expensive than the parts you would need to jury rig a button on the bars and a throttle would be a lot safer.
by Hwy89
Jan 06 2020 12:37am
Forum: Motor Technology
Topic: Rare Earth Magnetic Amorphous Metal cores in motors
Replies: 8
Views: 691

Re: Rare Earth Magnetic Amorphous Metal cores in motors

I'm so sorry to hear about peanut butter. I remember how hard it was for you when the St. Bernard, (was it Tiny?) died. I've been a dog owner all my life and have outlived too many. It hurts every time. I now have Baron, a German Shepard who turned 14 last June. He can barely walk and seems to have ...
by Hwy89
Jan 05 2020 12:53am
Forum: Motor Technology
Topic: Rare Earth Magnetic Amorphous Metal cores in motors
Replies: 8
Views: 691

Re: Rare Earth Magnetic Amorphous Metal cores in motors

To be truthful AW I don't know how to post a link from there to here. The website is Stockhouse.com, the the subject of the board is UCORE rare metals symbol UCU. The title of the post is Materion and Ucore could revolutionize electric motor. I'm not sure that it is important enough for you to spend...
by Hwy89
Jan 03 2020 1:14pm
Forum: Motor Technology
Topic: Rare Earth Magnetic Amorphous Metal cores in motors
Replies: 8
Views: 691

Re: Rare Earth Magnetic Amorphous Metal cores in motors

Amberwolf, it was just a comment by one of the posters on stockhouse.com for a rare earth metals company I'm interested in. It was suggested as a factor in increased consumption of rare earth minerals. He is not selling anything but perhaps gently pumping the stock. My interest was in finding out if...
by Hwy89
Jan 02 2020 6:28pm
Forum: Motor Technology
Topic: Rare Earth Magnetic Amorphous Metal cores in motors
Replies: 8
Views: 691

Rare Earth Magnetic Amorphous Metal cores in motors

To the motor experts on the board. I am reposting something that I read on another blog in hopes that some of you can review it, fact check it and possibly explain it for me. Anonymous blogger says: " Traditional electric motor ( including generator) core is built with copper wire and Si-iron ally, ...
by Hwy89
Dec 16 2019 10:12pm
Forum: Battery Technology
Topic: Can we parallel BMSs to handle high current ?
Replies: 20
Views: 1564

Re: Can we parallel BMSs to handle high current ?

I, at one time had a few hundred two cell packs. Each pack was 7.2 volts at 2200ah with its own BMS. I parallel these in groups of 6 then built 2 separate 6s packs. I charged them in parallel then used them in series as a 12s 12p battery. This worked out well for quite some time until I discharged i...