Search found 512 matches

by mrbill
Oct 19 2019 5:59pm
Forum: Items Wanted
Topic: BMS, 7s, Li-Ion (3.7v), >35A, common port, >60v MOSFETs
Replies: 0
Views: 44

BMS, 7s, Li-Ion (3.7v), >35A, common port, >60v MOSFETs

Five years ago I bought six 7s batteries from EM3EV made to order using Samsung INR-18650-29E cells, ca. 2014. These batteries have been running well for the last 5.5 years, and their capacities are around 90-95% what they were when new. All six of these batteries have operated normally and have bee...
by mrbill
Sep 19 2019 10:09pm
Forum: Motor Technology
Topic: "Edge" DD hubmotor, 1500W, 35mm, Al core
Replies: 186
Views: 24398

Re: "Edge" DD hubmotor, 1500W, 35mm, Al core

Hi everyone, I just got one from LAEbikes. Awaiting for it to arrive. Can anyone tell me in the mean time if this has a speed sensor built in. I need this info to order my Cycle Analyst. Thanks everyone. If the motor you ordered has at least one working Hall sensor, then it has a "speed sensor" as ...
by mrbill
Aug 14 2019 12:51pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1219
Views: 215040

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Hey Justin: I think it's great that you and your team have been improving the Phaserunner Software Suite. Some time ago I think I asked if the Suite could be used to program some of the other ASI controllers, such as the BAC2000 (non-bluetooth) as sold by Grin a few years ago. At the time you (or Ro...
by mrbill
Jul 10 2019 2:59pm
Forum: Items for Sale - Used
Topic: SOLD - Edge1500 DD hub motor w/Statorade, 10k NTC, Grin-compatible wiring harness - $150
Replies: 2
Views: 279

SOLD - Edge1500 DD hub motor w/Statorade, 10k NTC, Grin-compatible wiring harness - $150

Sorry, folks, this one's been sold. Shipping is $15 or (actual shipping charges + (optional) insurance charges + delivery confirmation fee, if any), whichever is greater. I will try to find cheapest shipping option or will ship according to your carrier of preference. All prices are in US Dollars. P...
by mrbill
Jun 16 2019 9:46am
Forum: Battery Technology
Topic: The Cycle Satiator, universal charger for the enthusiasts
Replies: 725
Views: 118885

Re: The Cycle Satiator, universal charger for the enthusiasts

For a few years, I have charged my two LiFeP04 16S/12 Ah packs to 3.5 Volts per cell. These packs have internal BMS's with balancing. Thinking after all this time that maybe the BMS's wont initiate the balance mode unless they see a 3.6 Volts per cell termination, I charged each pack separately and...
by mrbill
Apr 26 2019 12:55pm
Forum: E-Bike Reviews & Testing
Topic: Annual Battery Capacity Test
Replies: 7
Views: 1558

Re: Annual Battery Capacity Test

Hi mighty82: I haven't tested IR under more controlled conditions, but I have observed the IR stat on my CA3 using various configurations. I find that figure varies enough with temperature and state of charge that it will swamp any change due to age. The only thing that seems certain to me is that I...
by mrbill
Apr 11 2019 12:07pm
Forum: Items for Sale - New
Topic: 1500W (35mm) V2 DD Hub Motor Group Buy *CLOSED*
Replies: 25
Views: 2136

Re: 1500W (35mm) V2 DD Hub Motor Group Buy by Teslanv $200 + Shipping

As a side note, with this amount of power, you don't need as many gears, so I recommend a 6-speed megarange, and simply adjust the stops on your 7-speed derailleur. It's true that you don't need as many gears, but it's still nice to have a wide range. Most 6-speed freewheels are limited to 14-28. A...
by mrbill
Apr 11 2019 10:18am
Forum: Items for Sale - New
Topic: 1500W (35mm) V2 DD Hub Motor Group Buy *CLOSED*
Replies: 25
Views: 2136

Re: 1500W (35mm) V2 DD Hub Motor Group Buy by Teslanv $200 + Shipping

Will a 7 speed freewheel spun onto this keep the width at 135mm? You should be able to use a 7-speed freewheel on this motor without having to open up your drop-out much. An axle Spacer may be needed to get clearance for the smallest sprocket. I use a 7-speed freewheel with this motor in dropouts t...
by mrbill
Apr 10 2019 7:06pm
Forum: Items for Sale - New
Topic: 1500W (35mm) V2 DD Hub Motor Group Buy *CLOSED*
Replies: 25
Views: 2136

Re: 1500W (35mm) V2 DD Hub Motor Group Buy by Teslanv $200 + Shipping

Thanks, Barent, for offering these motors again at a good price. Can we assume that the critical dimensions are the same as the last batch you had in stock? In particular, could you confirm the following dimensions that I used last year for this motor in Grin's spoke length calculator? Flange diamet...
by mrbill
Mar 27 2019 11:55am
Forum: Motor Technology
Topic: "Edge" DD hubmotor, 1500W, 35mm, Al core
Replies: 186
Views: 24398

Re: "Edge" DD hubmotor, 1500W, 35mm, Al core

Hey Mr. Bill you inspired me to buy an Easy Racer and I should have it going in a couple of months. I am trying for a true stealth bike that will require close scrutiny to see that it is electric. Hi calfeetwenty: Glad to hear I inspired you. Since I live in a hilly area I actually find the DD moto...
by mrbill
Mar 27 2019 11:19am
Forum: Motor Technology
Topic: "Edge" DD hubmotor, 1500W, 35mm, Al core
Replies: 186
Views: 24398

Re: "Edge" DD hubmotor, 1500W, 35mm, Al core

Anyone interested in Group Buy??? Who would want one or more Bare Hub motors at $200 (Tariffs included) + Domestic shipping? Hi Barent: I'm still interested in one 6t 35mm motor with the same specs you had on your last batch (or better specs). I can manage with just bare wires coming out of the mot...
by mrbill
Dec 24 2018 4:57pm
Forum: Items Wanted
Topic: FOUND!!! EU: Rear DD hub motor for 135mm dropout
Replies: 3
Views: 424

Re: EU: Rear DD hub motor for 135mm dropout

Hi miuan:

I'm selling a motor that would meet or exceed your requirements. Maximum speed in a 72-volt system would be around 80 kph.

https://endless-sphere.com/forums/viewt ... =9&t=97590

Shipping from USA to Slovenia is 100 USD.
by mrbill
Dec 03 2018 11:19pm
Forum: Items for Sale - Used
Topic: SOLD - Edge1500 DD hub motor w/Statoraid, 10k NTC, Grin-compatible wiring harness - $175
Replies: 1
Views: 644

SOLD - Edge1500 DD hub motor w/Statoraid, 10k NTC, Grin-compatible wiring harness - $175

Shipping is $15 or (actual shipping charges + (optional) insurance charges + delivery confirmation fee, if any), whichever is greater. I will try to find cheapest shipping option or will ship according to your carrier of preference. Most items are new or lightly-used. A few items that have been used...
by mrbill
Jun 12 2018 11:35am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4498
Views: 709654

Re: Cycle Analyst V3 preview and first beta release

NOTICE: Any HIGH POWER DIY ebike activity, which is responsible, involves a SAFETY INTERLOCK. (low power activities... say under 1hp... are not as critical) This may be as simple as a mechanical switch inline with the controller throttle input along with a "pull down resistor". This is not mandated...
by mrbill
May 10 2018 9:14am
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2098
Views: 366602

Re: Definitive Tests on the Heating and Cooling of Hub Motors

Hi Folks:

I've got a partial syringe of Type A Statorade purchased in 2016 or earlier and a full syringe I purchased in March 2018 labeled as "Statorade". Can anyone tell me if these formulations are compatible and can be mixed together in the same motor?

Thanks.
by mrbill
May 07 2018 12:25pm
Forum: Items for Sale - Used
Topic: [SOLD] Edge1500 direct-drive hub motor - $100
Replies: 1
Views: 459

[SOLD] Edge1500 direct-drive hub motor - $100

Shipping is $15 or (actual shipping charges + (optional) insurance charges + delivery confirmation fee, if any), whichever is greater. I will try to find cheapest shipping option or will ship according to your carrier of preference. Most items are new or lightly-used. A few items that have been used...
by mrbill
May 07 2018 12:08pm
Forum: Items for Sale - Used
Topic: Valence Batteries and Accessories
Replies: 10
Views: 2383

Re: Valence Batteries and Accessories

Items are still available.
by mrbill
May 07 2018 11:59am
Forum: Items for Sale - Used
Topic: Battery Chargers and Accessories
Replies: 9
Views: 2079

Re: Battery Chargers and Accessories

Items are still available.
by mrbill
Feb 24 2018 11:59am
Forum: E-Bike Technical
Topic: DD Hub motors: Why only 23 pole pairs?
Replies: 3
Views: 789

Re: DD Hub motors: Why only 23 pole pairs?

Hi fetcher and John in CR: Thanks for your replies. I understand that a given DD hub motor in a smaller wheel is effectively "geared down", and runs more efficiently at lower speed. In my data this is reflected in the total watt-hour figure: 867 wh declining to 815 wh to move the bike around the loo...
by mrbill
Feb 22 2018 7:00pm
Forum: E-Bike Technical
Topic: DD Hub motors: Why only 23 pole pairs?
Replies: 3
Views: 789

DD Hub motors: Why only 23 pole pairs?

Over the last couple of years I have been experimenting with direct-drive (DD) hub motors on my bikes, building them into ISO 559 wheels (26" MTB wheels). Since I live in an area where there are many hills, I have found the advent of Statorade, Hubsinks, and motor braking to be beneficial. My recent...
by mrbill
Feb 22 2018 2:15pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13030

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

I finally ran the test. Having the wheel off the ground Throttle full on for about 10 seconds or more CA Watts: 79 to 80 "Speed" 29 to 30mph Hi Robert: Yes, I would say your wattage figures are about the same as mine using a wheel that I know to have sufficient amount of Statorade installed and no ...
by mrbill
Feb 16 2018 12:20pm
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13030

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Hi Robert: West Coast Electric Cycles will soon have in stock a 45mm stator DD hub motor. https://westcoastelectrics.com/product/45mm-ddhub/ This one may be your best option, although I still doubt it will get you up your hill without your pedaling at least a little bit. I recommend the "4T" option....
by mrbill
Feb 13 2018 11:37am
Forum: Items for Sale - New
Topic: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD
Replies: 109
Views: 13030

Re: Ebike Hub Motor overheating cooling solution - HUBSINK OFFICIAL THREAD

Hi Robert: I'll assume you've tuned the Phaserunner for your motor. If you're seeing 66C at the controller and the motor is overheating, that's a sure sign that you're running the motor into the "heater zone", where too much power is being converted into heat. You might be better served by a slower ...