Search found 417 matches

by Hwy89
Feb 03 2020 12:38am
Forum: E-Bike General Discussion
Topic: 48V500W Rear Driving BikeConversion Kit
Replies: 28
Views: 862

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: 907

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: 515

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: 872

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: 599

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: 580

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: 580

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: 580

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: 580

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: 1439

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...
by Hwy89
Dec 16 2019 9:46pm
Forum: Battery Technology
Topic: Lithium battery question
Replies: 31
Views: 1186

Re: Lithium battery question

Fully charged, a 7s battery should be around 29 volts. At 27 volts it is near the low voltage cutoff. Is that as high as you can get it to charge?
by Hwy89
Dec 15 2019 8:45pm
Forum: E-Bike General Discussion
Topic: 5 years using a brushless Aotema
Replies: 7
Views: 735

Re: 5 years using a brushless Aotema

2old, yes the last I heard it was still ticking. I only had it for a couple of weeks before installing it on a coworkers bike. I didn't make anything on that deal except the enjoyment off seeing the resultant grin😁
by Hwy89
Dec 14 2019 10:29pm
Forum: E-Bike General Discussion
Topic: 5 years using a brushless Aotema
Replies: 7
Views: 735

Re: 5 years using a brushless Aotema

Ten years ago I bought that same wilderness energy kit used on Craigslist. Since then that motor and controller have been in use on at least five different bikes. It has gone from the original 36v lead acid to several 12s lithium pack and is now installed in a 16" front on a Sun EZ Trike running at ...
by Hwy89
Dec 05 2019 2:30am
Forum: E-Bike General Discussion
Topic: Max comfortable width of pack mounted in triangle
Replies: 21
Views: 1207

Re: Max comfortable width of pack mounted in triangle

Are you using 18650 cells? I get 5 cells at ~3.75 inches in columns and 4.12 inches honeycombed. This is packing them tight without cellholders.
by Hwy89
Dec 04 2019 5:06pm
Forum: Battery Technology
Topic: Need help constructing a pack
Replies: 6
Views: 519

Re: Need help constructing a pack

I used the more sophisticated CAD method, Cardboard And Dimes. Heads positive and tails negative. When the layout was finalized I colored the heads with a red marker to make them show up better in the photograph.
Dimes are almost the perfect diameter for 18650 layouts.
by Hwy89
Nov 24 2019 6:36pm
Forum: Battery Technology
Topic: Dropped padded battery. Some of the heatshrink cracked. How can I "safely" salvage this?
Replies: 5
Views: 608

Re: Dropped padded battery. Some of the heatshrink cracked. How can I "safely" salvage this?

This is strictly my opinion as to what I would do with that battery. With the covers off and all of the cells exposed take it to a safe location and put it through a complete charge/discharge cycle. If necessary build a test load for the discharge. Monitor for the entire test looking for hot spots o...
by Hwy89
Nov 19 2019 11:43pm
Forum: E-Bike General Discussion
Topic: Thank you everyone!
Replies: 6
Views: 1050

Re: Thank you everyone!

Ah yes, another one is hooked, I remember when it happened to me.
Good luck in your endeavors.
by Hwy89
Nov 19 2019 11:35pm
Forum: Battery Technology
Topic: Physical damage to the cell, happy I'm not on fire
Replies: 6
Views: 993

Re: Physical damage to the cell, happy I'm not on fire

I suspect you "dodged the bullet" on that one. specifically about 70 rounds of ammo in your backpack. Suppose you bumped your head and were a little dazed, could you have gotten the backpack off quickly enough?
Buy a new cell and fix the battery but please find a better way to protect it.
by Hwy89
Nov 14 2019 4:04am
Forum: Battery Technology
Topic: Understanding and Using EGO Power+ Batteries
Replies: 89
Views: 24637

Re: Understanding and Using EGO Power+ Batteries

Hi, I made an ego pack drive bike a year ago for my neighbor and she loves it. I bought a charger on ebay and stripped it mounting only the battery cradle on her rear rack. The tension was never very good and she has always had to use a bungee cord to keep the battery tightly engaged but she is very...
by Hwy89
Nov 14 2019 3:42am
Forum: Battery Technology
Topic: Building 13S17P battery, need some criticism on layout
Replies: 9
Views: 867

Re: Building 13S17P battery, need some criticism on layout

I haven't heard that description before but yes Crazy Frog is likely a nut licker.😁
by Hwy89
Nov 14 2019 1:01am
Forum: Battery Technology
Topic: Building 13S17P battery, need some criticism on layout
Replies: 9
Views: 867

Re: Building 13S17P battery, need some criticism on layout

CrazyFrog please just go away. The layout looks good. If you are planning on putting it into a triangle bag you may have problems getting it through the zippered opening. I built a similar one last year and ended up making it in two sections to go into the bag one at a time then plugged together wit...
by Hwy89
Nov 06 2019 12:38am
Forum: E-Bike General Discussion
Topic: Would ballast disconnects be workable reusable connector?
Replies: 11
Views: 768

Re: Would ballast disconnects be workable reusable connector?

Take my word for it. Those HD connectors are not suitable . Go with the XT60's.
by Hwy89
Oct 20 2019 4:27pm
Forum: E-Bike Technical
Topic: Confusing battery info
Replies: 9
Views: 812

Re: Confusing battery info

54.6 volts is the maximum charge (4.2v X 13 series) the nominal voltage is right about 48 volts.
by Hwy89
Oct 19 2019 6:40pm
Forum: General Discussion
Topic: Non EV LED Lighting PSU Question
Replies: 27
Views: 1649

Re: Non EV LED Lighting PSU Question

Four 12 V automotive LED lights in series. Don't worry about the AC they will be self rectifying.
by Hwy89
Oct 19 2019 6:33pm
Forum: General Discussion
Topic: Revive LiIon pack?
Replies: 9
Views: 852

Re: Revive LiIon pack?

Are you measuring voltage directly on the cell ends or at the bms end of the sense wires? I'm at a loss to see how a 25 p block could completely discharge without heating something up and leaving some kind of trace. It would have to have been through one or more of the cells and at a very slow contr...