Search found 27 matches

by ngant17
Dec 20 2018 10:11am
Forum: Forum Rules and Features
Topic: The future of our forum - facebook versus web forums
Replies: 41
Views: 2345

Re: The future of our forum - facebook versus web forums

To bring up that ungodly social media platform, well my dear, no one has linked "In Your Facebook" articles by Dave Emory. Or did I miss a thread? I humbly reference this at his website: https://spitfirelist.com/for-the-record/ftr-1021-fascisbook-in-your-facebook-part-3-a-virtual-panopticon-part-3/ ...
by ngant17
Feb 12 2018 4:56am
Forum: E-Bike Technical
Topic: Bafang BBS02, DROK and 60 volts
Replies: 3
Views: 464

Re: Bafang BBS02, DROK and 60 volts

Here's a few things I'm learning about amperage with the DROK. Most people don't completely understand the differences between amp-hours and amperage! Including me. Amp-hours and amperage are different conditions and have different meanings. My batteries are rated at 4 amp-hours but the electric mot...
by ngant17
Feb 12 2018 4:37am
Forum: E-Bike Technical
Topic: Bafang BBS02, DROK and 60 volts
Replies: 3
Views: 464

Re: Bafang BBS02, DROK and 60 volts

There are several reasons I have gone this route. Economical, first and foremost. 1) Why spend $400 for a Panasonic 48v 11.5 Ah battery to run the Bafang BBS02? (almost double that price if you want 60v). I already have a 60v battery (w/ Panasonic cells) and it is not being used except when I'm mowi...
by ngant17
Feb 11 2018 12:19am
Forum: E-Bike Technical
Topic: Bafang BBS02, DROK and 60 volts
Replies: 3
Views: 464

Bafang BBS02, DROK and 60 volts

My original e-bike thread was started with a SK Electronics buck converter in mind, connected to a Bafang BBS02 motor and a 60v 4Ah Greenworks Pro ‘lawnmower’ battery. However, that step-down or ‘buck’ converter didn’t pass muster and I’ve replaced it with one which appears to be a better design – t...
by ngant17
Feb 08 2018 8:14pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

I tossed out the original SX Electronics 60V buck converter as it appears to have been defective. Replaced and the new kid on my electronics block is a DROK 75V 12A 720W DC-DC Adjustable Buck Step Down Converter. Very happy with this component. Voltage Out and Amperage is adjustable, although instru...
by ngant17
Feb 04 2018 5:46pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

Managed to go 15km this time, with power left to go on second battery. Stayed away from off-road terrain, kept to hard paved surfaces and ran only in PAS1, which meant 12-13kph max speed and pedaling slow, not really optimum with a fixed, single-speed granny gear (46T/20T). You don't really want thi...
by ngant17
Feb 03 2018 9:10pm
Forum: E-Bike Technical
Topic: 60v to 48v buck converter for e-bike
Replies: 10
Views: 1049

Re: 60v to 48v buck converter for e-bike

I guess I'm following your advice on using partially-charged 60v batteries. My routine is to take a fully charged 60v battery (~64v) and run it for a few minutes in my Greenworks lawnmower. That usually shows up as 61.5v or less on my VOM. Then it's plug 'n play with the e-bike. I would prefer to st...
by ngant17
Feb 01 2018 6:50pm
Forum: E-Bike Technical
Topic: 60v to 48v buck converter for e-bike
Replies: 10
Views: 1049

Re: 60v to 48v buck converter for e-bike

My newest idea is the use a single 60v battery and a reserve of 2 fully-charged 60v batteries (assuming 64v at full charge). And a switch to automatically connect all three batteries in parallel after the first 60v battery drops below 56.5v. I got this number from a simple math solution for one unkn...
by ngant17
Jan 31 2018 7:51pm
Forum: E-Bike Technical
Topic: 60v to 48v buck converter for e-bike
Replies: 10
Views: 1049

Re: 60v to 48v buck converter for e-bike

Just read a recent view on a single-speed ebike. Specs and characteristics below: Populo Sport ebike ($799.00) 250 watt rear hub motor 36V / 8.7 Ah (313 watt hours) lithium battery pack w/ Panasonic cells Aluminum frame(35.7 pounds) Narrow road bike 700c wheels single speed - 46t chainring / 16t cog...
by ngant17
Jan 29 2018 6:42pm
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 197
Views: 14535

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

Thanks for your input. Will be studying them carefully to improve bike performance. “1) Each of your packs is probably a 15s 2p 18650 pack. It really isn't a 60v pack. “ I can charge the batteries overnight, and VOM shows 62-64v right off a fresh charge. VOM is accurate, so I think it’s a real 60v b...
by ngant17
Jan 28 2018 11:36pm
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 197
Views: 14535

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

I see you’re getting +22 watt-hours per mile, which jives pretty well with Luna Cycle’s standard 20 watt-hours/mile. I have (2) 60v x 4Ah Li-ion batteries which is 480 watt/hrs. My latest test-run barely got me home with less than 10 mile range. So I’m really failing that standard by at least half. ...
by ngant17
Jan 28 2018 7:31pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

Initial long-haul test of the bike: I seem to have a max. range of ~15km/9 miles using (2) 60v 4Ah batteries. One of the batteries did not have a full 60v charge. This trip was 75% on an off-road trail and about 25% on roads to/from the trail. PAS was used most of time, since my single-speed gear ra...
by ngant17
Jan 28 2018 3:20pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

The ever-helpful sales associate Wendy Wu at http://cnebikes.en.made-in-china.com/ CNE Bikes, where I got the Bafang set, is informing me: "52v is max for 48v 750w or 48v 1000w motor engine .why do you use a 60v ? it is really not good for motor and controller .controller will be broken if you use 6...
by ngant17
Jan 28 2018 7:40am
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

Re: using a DPDT switch on 60-48v buck converter w/Bafang

Found a potential candidate for my battery drain. On Amazon - 60V to 5V, 5A 4 Port USB Charger DC Step Down Voltage Regulator Power Supply Module with Case. $10. That and a good front/back light set w/USB charging should be the ticket to ride on the freshly-charged 60v Greenworks battery. Anything t...
by ngant17
Jan 27 2018 3:25am
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

Re: using a DPDT switch on 60-48v buck converter w/Bafang

Yes, that is an excellent idea. No cost, too. Thanks for input, that will be on the to-do list if all else fails. At this point in my project, monitoring charges on the two Greenworks 60v batteries, this will have to be a priority of the moment. It does seem that this particular buck converter is a ...
by ngant17
Jan 26 2018 5:39pm
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

Re: using a DPDT switch on 60-48v buck converter w/Bafang

After testing 60v-48v 20A buck converter, it seems to have problem with amperage. Bafang motor was operating in shaky and jolting spurts, but ran normally when converter was pulled off of bike. It may be more cost-effective to use the much cheaper 60v-6v buck converters, and wire it to only run bike...
by ngant17
Jan 26 2018 7:33am
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

Re: using a DPDT switch on 60-48v buck converter w/Bafang

Initial check of new buck converter seems to show a very small power drain from unit. And it appears higher than 48v output voltages can be set. For example, I can get 61.5v IN and adjusted screw for OUT as high as 55.5v, which is fine for running the Bafang. Fully charged at 62v should show same 6v...
by ngant17
Jan 26 2018 1:43am
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

Re: using a DPDT switch on 60-48v buck converter w/Bafang

Battery chemistry is Li-Ion. Hongkong Sun Rise Trading is parent company of Greenworks. I've seen good ratings for its battery runtime and power, although an upgrade to 5Ah is being offered. I'm sure you are correct on high currrent draw from Bafang. My experience is 30-45mins. easy for turning a la...
by ngant17
Jan 25 2018 6:55pm
Forum: E-Bike Technical
Topic: using a DPDT switch on 60-48v buck converter w/Bafang
Replies: 7
Views: 627

using a DPDT switch on 60-48v buck converter w/Bafang

What is the best way to use a DPDT (Dual Position, Dual Throw) switch in a circuit with a 60v-48v buck converter/regulator? I have a Bafang BBS02 and I want to power a circuit which will bypass or detour the regulator at times, in order to run a 48v motor directly from 60v battery. But I also want t...
by ngant17
Jan 16 2018 9:28pm
Forum: E-Bike Technical
Topic: BBSHD on Klein Palomino Keeps Breaking Rear Cassette
Replies: 14
Views: 772

Re: BBSHD on Klein Palomino Keeps Breaking Rear Cassette

I can hit 35kph with a single 20T freewheel on back and stock Bafang 46T chainring. BBS02 running at PAS 9. Seems rather redundant for me to want to shift gears, it's the same as driving a car with automatic transmission. OTOH I used to drive a Porsche 914 with 5-speed and loved it until I got rear-...
by ngant17
Jan 16 2018 8:59pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

Using the 60v, 4.0 amp-hour Greenworks battery, I maxed out at 35kph/21mph on street today, level 9 on PAS. When the air is blasting you in the face at that speed, it's the wake-up call you need, to be sure your bike's lighting and brake system are at its highest potential. It's basically a war-zone...
by ngant17
Jan 15 2018 7:02pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

Just swapped out drill motor batteries for the 60v Greenworks Pro lawnmower battery. Now it's a real powerhouse, and even with the watt-hours which are less than 1/3 of the Bafang BBS02 rating of 750watts. Being about 125% over-voltaged, the PAS at level 1 is sufficient and it would be unwise to pus...
by ngant17
Jan 15 2018 2:42pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Re: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

I'll be tossing out the 18v-20v power tool batteries as I now understand the watt-hours rating of batteries. Pretty pathetic, 40 watt/hours at best. Initially the little batteries did give me an immediate boost on PAS 9 but they quickly wimped out after a few minutes of riding. At least it was good ...
by ngant17
Jan 13 2018 10:23pm
Forum: E-Bike Technical
Topic: Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator
Replies: 7
Views: 806

Using the SX Electronics 60V/30A Buck Converter Step Down DC Regulator

This is my first project e-bike. I had an inexpensive and rusty Exitor Magna mountain bike, so it needed a lot of new parts. The bike was bought at a surplus auction a few years ago. Kept outside in hot, humid Florida weather for all that time. https://tinyurl.com/bike-frame1 I needed to remove the ...
by ngant17
Jan 08 2018 9:25pm
Forum: E-Bike Technical
Topic: 60v to 48v buck converter for e-bike
Replies: 10
Views: 1049

Re: 60v to 48v buck converter for e-bike

BTW can the Wangdd22 1500W 30A DC Boost Converter be used to step down voltage? The spec sheet suggests to me that it would do that: Input voltage: DC 10V~60V Output voltage: 12~90V continuously adjustable If so, that will be top on the list to finish the bike. My electrical knowledge is generally c...