Search found 2877 matches

by motomech
Dec 11, 2017 6:24 pm
Forum: E-Bike Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1686
Views: 469818

Re: Your Creation's Before & After Pics

electronicru wrote:
Dec 10, 2017 1:02 pm
stock motor + “chupasos” :D (forced air cooling)
https://youtu.be/-ee1mJnZ71k
Battery
https://youtu.be/pjHiYKFRZ-o
Stock Controller. Upgrade mosfets, capacitors + forced air cooling + arduino
“chupasos” = Suckers :D
by motomech
Dec 11, 2017 1:05 am
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

Yeh, but the big advantage to this controller is the ability to go straight from array to load, making for the lightest, most simple system possible.
Let's not forget that the 7210A is $43. For that price, I think it exceeds expectations
by motomech
Dec 09, 2017 12:14 am
Forum: E-Bike General Discussion
Topic: Cute Q100 lightweight builds slow mtb, fast road
Replies: 281
Views: 33094

Re: Cute Q100 lightweight builds slow mtb, fast road

I assume that's so the motor won't be fed too much current and overheat? If so, he's probably taking care of that by using PAS level 1 on his hill climbs. The controller will put out very little current at that PAS level. Hummm, maybe not. I haver climbed a steep hill w/ a sine wave controller in l...
by motomech
Dec 08, 2017 3:23 pm
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

Nice controllers for sure, but they are buck controllers and wouldn't be useful charging my Ebike. The MPT-7210A is CC/CV, something I need for my LiPoly. That's bullshit. https://genasun.com/all-products/solar-charge-controllers/for-lithium/gvb-8a-li-lithium-solar-boost-controller/ They have boost...
by motomech
Dec 08, 2017 3:12 pm
Forum: E-Bike General Discussion
Topic: Cute Q100 lightweight builds slow mtb, fast road
Replies: 281
Views: 33094

Re: Cute Q100 lightweight builds slow mtb, fast road

Here's an update on my Q100 C build that is at the other end of the spectrum than the high-speed motor build above. My "201" low-speed motor, backed w/12S LiPoly(45 Volts) and an ELB 17 Amp controller was working well and really forcing me to pedal, but as usual, I got bored w/ it and wanted to go f...
by motomech
Dec 08, 2017 2:49 pm
Forum: E-Bike General Discussion
Topic: Cute Q100 lightweight builds slow mtb, fast road
Replies: 281
Views: 33094

Re: Cute Q100 lightweight builds slow mtb, fast road

I just wanted to add to this thread and thank everyone on it for all the great info. Based on advise found here (and directly in contradiction to other advice found on ES) I went ahead and converted my 22# (20 speed) aluminum cyclocross bike with a BMS Q100cst 328rpm 36V kit. My goal was a PAS setu...
by motomech
Dec 07, 2017 12:57 am
Forum: E-Bike General Discussion
Topic: Rescue Motor - Aotema (Wilderness Energy BD-36)
Replies: 4
Views: 243

Re: Rescue Motor - Aotema (Wilderness Energy BD-36)

Several folks here have experience with the original Aotema, including dogman. I believe it is still the smallest DD motor and has never been considered a powerhouse. Terry, at; https://store.hightekbikes.com/index.php?main_page=index&cPath=2&zenid=14f7fe987628ecbd1cd05c0e8c1f2da9 still offers Aotem...
by motomech
Dec 06, 2017 2:27 pm
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

Thanks for posting the boost controller I wasn't aware of them and will be buying one to try out. In reading the reviews it seems that these reset a lot if the input voltage drops so the best way to hook one up would be to use the house battery as the input. I don't own such controller, but a few m...
by motomech
Dec 06, 2017 2:07 pm
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

I've been a full time RVer for about 3 years now. I carry a 180 watt panel, 27V open circuit through a simple non mppt controller always feeding my house battery bank. I use an RC balance charger occasionally but mostly bulk charge with a Meanwell plugged into an inverter. Not the most efficient wa...
by motomech
Dec 06, 2017 10:32 am
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

The MPT-7210A solar controller IS the step-up boost converter. That's what is unique about it as I think it's the only one of it's kind. At least in that price range. It does make for a simple system.
by motomech
Dec 06, 2017 5:29 am
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Re: Using a MPPT solar charge controller as a bulk charger

I have a little more Sun to play with. :D
by motomech
Dec 05, 2017 7:01 pm
Forum: E-Bike General Discussion
Topic: $600 mixed ebike kit from China 350w MXUS wheel
Replies: 60
Views: 1441

Re: $600 mixed ebike kit from China 350w MXUS wheel

I don't have a KT controller, but all the discs are just magnets in a wheel, right?
It should work.
by motomech
Dec 05, 2017 6:15 pm
Forum: Battery Technology
Topic: Using a MPPT solar charge controller as a bulk charger
Replies: 18
Views: 285

Using a MPPT solar charge controller as a bulk charger

I'm building a sm. tracking solar generator to use w/ my toy hauler when boondocking that can be used in 2 ways. 1)To top off the toy hauler's 12 V deep cycle battery. 2)To charge my LiPoly 12S/20 Ah main pack. The details of the panels and how the tracking system works I will post later when I have...
by motomech
Dec 04, 2017 8:37 pm
Forum: E-Bike General Discussion
Topic: $600 mixed ebike kit from China 350w MXUS wheel
Replies: 60
Views: 1441

Re: $600 mixed ebike kit from China 350w MXUS wheel

Be advised that when BMS Battery first came out with their "Dual Hall" intergrated PAS sensor, there were some complaints of it not working. Just an advisement, not saying the one pictured won't work. Too bad there isn't a way to test it without mounting it. I had one that I didn't use because I did...
by motomech
Nov 29, 2017 11:24 pm
Forum: E-Bike General Discussion
Topic: $600 mixed ebike kit from China 350w MXUS wheel
Replies: 60
Views: 1441

Re: $600 mixed ebike kit from China 350w MXUS wheel

I can tell what I get. Q100, MXUS mini or larger geared, the motor doesn't make much difference, it's how it's used. Ebike #1- GT Idrive, 26" X 1.95" road tires, 50 psi, pedals and rolls good for a MTB: 100_0107.JPG "201" motor, 15 A controller, 46 Volts, Pedaling-moderate, most of the time. Avg. cr...
by motomech
Nov 29, 2017 7:12 pm
Forum: Motor Technology
Topic: 8Fun Planetary Gear Motor Use, Improvements, Troubleshooting
Replies: 4
Views: 128

Re: 8Fun Planetary Gear Motor Use, Improvements, Troubleshooting

Without taking it apart, it's hard to say what is causing the slipping.
BMS Battery actually sells the entire gear set/clutch for a couple of Bafang mini models for $19.
Of course the shipping will be a killer if that is all that is ordered.
by motomech
Nov 29, 2017 7:05 pm
Forum: Battery Technology
Topic: Free shipping from Hobbyking today
Replies: 3
Views: 189

Re: Free shipping from Hobbyking today

Wish my controller's LVC would support 14S.
Harbor Freight has ammo boxes on sale
by motomech
Nov 28, 2017 8:40 pm
Forum: Motor Technology
Topic: 8Fun Planetary Gear Motor Use, Improvements, Troubleshooting
Replies: 4
Views: 128

Re: 8Fun Planetary Gear Motor Use, Improvements, Troubleshooting

Yes, the Sprag clutch is probably slipping. Sometimes the little springs that keep tension on the rollers get weak or break. One member here actually found replacement on the Net as a hardware item(not an ebike motor part) Metal gears-They were all the rage a number of years ago, but nobody could st...
by motomech
Nov 28, 2017 8:29 pm
Forum: E-Bike Technical
Topic: Cute Q100H - 20" (406) Build
Replies: 5
Views: 211

Re: Cute Q100H - 20" (406) Build

Rewind a $90 motor???
I don't think so.
by motomech
Nov 28, 2017 5:56 pm
Forum: E-Bike General Discussion
Topic: $600 mixed ebike kit from China 350w MXUS wheel
Replies: 60
Views: 1441

Re: $600 mixed ebike kit from China 350w MXUS wheel

How many watts was the motor pulling in its acceleration mode with your first controller vs 2nd controller ? I had a C.A. at the time , but it was years ago. I think I used to see 700 to 900 Watts full throttle, depending on the controller. But hey my next bike will have the largest geared hub moto...
by motomech
Nov 28, 2017 5:39 pm
Forum: E-Bike General Discussion
Topic: Yet another flat - HELP!
Replies: 18
Views: 288

Re: Yet another flat - HELP!

I think what everyone here except Chalo don't realize, is that Mark stated in another thread that he weighs 388 lb.s.
by motomech
Nov 28, 2017 5:23 pm
Forum: E-Bike Technical
Topic: Cute Q100H - 20" (406) Build
Replies: 5
Views: 211

Re: Cute Q100H - 20" (406) Build

Yeah, you have missed a lot, not surprizing, given the ocean of info here. First off, the Ebike CA simulator has the Cute 328 as a motor choice, so you can plug in your parameters and get the answers you seek. But, of course, given an opportunity, I will kibitz. You don't tell us if you are building...
by motomech
Nov 28, 2017 12:56 pm
Forum: E-Bike Technical
Topic: High-speed, long-distance (heavy "30^3") Q128 commuter build
Replies: 67
Views: 2127

Re: High-speed, long-distance (heavy "30^3") Q128 commuter build

An interesting build. I've been following this as I am planning a fairly similar one soon, also with the fast Q128C. The high amount of drag on the wheel can't be right. Even my BionX motor (direct-drive with no freewheel) has less drag. Which motor did you lace in, the one which previously needed ...
by motomech
Nov 28, 2017 12:15 pm
Forum: E-Bike General Discussion
Topic: $600 mixed ebike kit from China 350w MXUS wheel
Replies: 60
Views: 1441

Re: $600 mixed ebike kit from China 350w MXUS wheel

I don't think just because an Aliexpress vendor claims the motor is a MXUS product, guarantees it is a MXUS, especially at the prices at that site. With copies and clones so prevalent from that market, I think the only way to be sure one is buying a MXUS, is to buy from the factory direct. I did no...