Search found 7064 matches

by Drunkskunk
Jul 18 2019 2:29am
Forum: E-Bike Technical
Topic: MXUS 3k turbo nuts
Replies: 1
Views: 222

Re: MXUS 3k turbo nuts

I've had some MXUS motors, but not the 3k. All of them have been 1.25 pitch. Don't know if that helps or not.
by Drunkskunk
Jul 18 2019 2:15am
Forum: E-Bike Technical
Topic: Lightweight 250w 700c 120mm Rear Hub Motor on a Budget
Replies: 6
Views: 496

Re: Lightweight 250w 700c 120mm Rear Hub Motor on a Budget

yeah, if you were in Asia, there might have been hope, but outside of their, not so much. See, the problem is, the Q100 and it's siblings are really $180 motors. Some rather shady pricing by greenbikekit/BMSbattery lists them for about half what they're worth, then gets the rest of their value by su...
by Drunkskunk
Jul 17 2019 2:43pm
Forum: General Discussion
Topic: XB-502 questions
Replies: 1
Views: 381

Re: XB-502 questions

by Drunkskunk
Jul 17 2019 3:37am
Forum: E-Bike General Discussion
Topic: Stealth, Qulbix, Cyklon, HPI, ??
Replies: 30
Views: 1561

Re: Stealth, Qulbix, Cyklon, HPI, ??

We have this saying, "If it looks like a duck, and quacks like a duck, it's a duck." Those bikes you listed all look like motorcycles. The police will look at you screaming by at 70kph on one and see them as an unlicensed, unregistered, uninsured, untagged, unlawful motorcycle. it's the hazard we al...
by Drunkskunk
Jul 16 2019 7:50pm
Forum: E-Bike Technical
Topic: Lightweight 250w 700c 120mm Rear Hub Motor on a Budget
Replies: 6
Views: 496

Re: Lightweight 250w 700c 120mm Rear Hub Motor on a Budget

Welcome to the forum. We're kind of international here, so what part of the world are you in?
by Drunkskunk
Jul 16 2019 7:10pm
Forum: E-Bike Technical
Topic: New Build with new Cycle Analyst showing 100v with 52v battery pack
Replies: 4
Views: 285

Re: New Build with new Cycle Analyst showing 100v with 52v battery pack

If you don't fully trust your volt meter, you can charge up your battery and calibrate off that. At full charge, a 14s battery should read 58.8 volts. which should settle to 58.7 or so once connected and powering on your controller. You can then play with the multiplayer in the C Analyst until it sh...
by Drunkskunk
Jul 16 2019 6:25pm
Forum: E-Bike General Discussion
Topic: can I add a throttle to this controller?
Replies: 5
Views: 410

Re: can I add a throttle to this controller?

Welcome to the forum. Do you know the name and/or model number of that controller? Perhaps someone has one with a throttle, and can help identify where it wires up. it's a long shot. +5v should be easy, as any +5v pad will work. it's only used to power on the hall sensor(s). the signal wire is anoth...
by Drunkskunk
Jul 16 2019 5:09pm
Forum: E-Bike General Discussion
Topic: Can I use battery to charge swagcycle?
Replies: 4
Views: 319

Re: Can I use battery to charge swagcycle?

Sometimes this kind of thing works, sometimes it doesn't. it depends on how the circuit was designed. Short of an in depth analysis of the schematics for the charger, the only way to know is to try it. However, the risk is destroying the charger. Failure of that can happen in 2 ways. (1), it fails o...
by Drunkskunk
Jul 15 2019 4:58pm
Forum: Battery Technology
Topic: Long Frame Battery
Replies: 3
Views: 322

Re: Long Frame Battery

Are those measurements on the outside, or the inside? If that's the inside, you should be able to get 12s 5P in there with bare cells, if you pack them tight. I don't know what your cell holder looks like, but end to end, 10 cells arranged 5X2 per layer seems to be the best use of space.
by Drunkskunk
Jul 15 2019 11:54am
Forum: E-Bike Technical
Topic: Rear Hub motor magnetically locked
Replies: 11
Views: 693

Re: Rear Hub motor magnetically locked

Welcome to the forum. If you had a motor with a short in the coils, it would be fairly easy to turn at low speeds, but the faster you turned it, the harder it would be to turn. The motor needs to move to generate enough power in the coil to cause a magnetic resistance. That magnetic field only works...
by Drunkskunk
Jul 15 2019 4:13am
Forum: E-Bike General Discussion
Topic: How should I measure for replacement hub motor bearings?
Replies: 5
Views: 4838

Re: How should I measure for replacement hub motor bearings?

Measure outside diameter, then inside diameter, then the thickness. 35x15x11 is common enough. Cheap, too at $1.79 plus shipping C3 is standard clearance. https://pgnbearings.com/products/6202-2rs?variant=13312815038577 Or you can get 2 delivered same day from Amazon for Still cheap. $6.40 https://s...
by Drunkskunk
Jul 15 2019 2:39am
Forum: E-Bike General Discussion
Topic: Power switch names
Replies: 5
Views: 396

Re: Power switch names

Yep. Chinese engineering at it's finest. An odd mix or parts so overbuilt they will survive long after humanity is gone, and parts so under rated that people get killed so often we have grown numb to it. You can make your own key that can take the power, if you want, or just bypass it entirely. You ...
by Drunkskunk
Jul 15 2019 12:54am
Forum: E-Bike General Discussion
Topic: 40v Ryobi e-Bike
Replies: 19
Views: 2344

Re: 40v Ryobi e-Bike

I wonder if anyone is selling dead 40v batteries? I just replaced the cells in my Ryobi 18v. They were LG HB2 1500mha 30A cells, I swapped in Molicell 2800mha 35AH cells. I bet something similar could be done along with a beefed up BMS for the 40V. A place I stay on some weekends, I have A Ryobi tri...
by Drunkskunk
Jul 14 2019 6:28pm
Forum: E-Bike General Discussion
Topic: Power switch names
Replies: 5
Views: 396

Re: Power switch names

They're also generally rated for about 12v and 20 amps. pump more through them and they do that: exactly what's in your pic. The high voltage arcs, erodes the contact points until they don't conduct as well, causing resistance that heats up the switch. It doesn't happen right away, but the End resul...
by Drunkskunk
Jul 12 2019 8:27pm
Forum: E-Bike General Discussion
Topic: Donor bike question
Replies: 5
Views: 472

Re: Donor bike question

That Windsor Cliff 4500 is fairly close to ideal. If we had a rating system, it might be 4 out of 5 stars. it's a double diamond design, with a large, consistent geometry main triangle that will make mounting the battery and other hardware easier. It's a 26" wheel size, meaning you have more choices...
by Drunkskunk
Jul 12 2019 3:18pm
Forum: E-Bike General Discussion
Topic: Donor bike question
Replies: 5
Views: 472

Re: Donor bike question

Welcome to the forum. That Motobecane is basically a hybrid with a shock. It's not a bad entry level bike, if you plan to use it like a hybrid. With those stock tires, the only trail tiding it should do is a groomed path through the park. But they do say it has clearance for 29X2 tires, so it could ...
by Drunkskunk
Jul 12 2019 1:14am
Forum: Battery Technology
Topic: New 52v battery sat unused for two years...
Replies: 12
Views: 869

Re: New 52v battery sat unused for two years...

If it sat in the heat of a garage, it might have been baked to death. Lithium degrades in the heat.
I would avoid. Batteries have a limited shelf life anyway.
by Drunkskunk
Jul 12 2019 12:43am
Forum: E-Bike General Discussion
Topic: Big bucks for a brake rotor?
Replies: 28
Views: 1520

Re: Big bucks for a brake rotor?

When price is no object, I pick Hayes rotors. And when I need a cheap trash-able rotor, same choice.
Thick, lots of meat to take the heat. they don't bend easy or warp.
And like $22 on Ebay
by Drunkskunk
Jul 11 2019 5:56pm
Forum: Battery Technology
Topic: Are my Li-Mn batteries toast?
Replies: 15
Views: 750

Re: Are my Li-Mn batteries toast?

Scratching my head for a while, I seem to remember Koinion cells were though to be "self balancing". They aren't really, but they had really bad charging efficiency at their top end, so they tended to stay more balanced than other cells, back in the lithium dark ages of 2007. That might be what your...
by Drunkskunk
Jul 11 2019 8:32am
Forum: Battery Technology
Topic: Are my Li-Mn batteries toast?
Replies: 15
Views: 750

Re: Are my Li-Mn batteries toast?

Welcome to the forum. 7 years is a good long life for a Lithium battery, and It sounds like a bad battery, but it could also be a failed BMS. It may be worth your time to open up the battery and look for voltage on individual cell groups. If you have voltage on the cells but not on the main battery ...
by Drunkskunk
Jul 10 2019 5:34pm
Forum: E-Bike Technical
Topic: No acceleration
Replies: 19
Views: 1030

Re: No acceleration

Thanks. Ok checked all connections all good. So I did some more voltage checking. The throttle red wire 5 v white wire ground, blue wire 3.7 volts. So unplugged throttle checked voltage from controller. Have 5 volts at the red wire and 5 v at blue wire. Do I have a bad throttle ? the blue wire is t...
by Drunkskunk
Jul 10 2019 3:45pm
Forum: E-Bike Technical
Topic: I think I need a new controller.......LVC occuring 39V, not 30V.
Replies: 16
Views: 1012

Re: I think I need a new controller.......LVC occuring 39V, not 30V.

Where are you measuring 39 volts when the controller cuts out? is that an active volt meter that you see drop to 39 under load and then cut? or is it the pack voltage after the controller has cut? If it's under load, is it read from the battery, or from the controller? If it's from the battery, you ...
by Drunkskunk
Jul 10 2019 11:47am
Forum: Battery Technology
Topic: DIY case for 12V 11-Ah pack from pouch cells
Replies: 15
Views: 1006

Re: DIY case for 12V 11-Ah pack from pouch cells

Looks cool. will they handle enough amps for the spot welder? If so, I might have to get some.

They make a glue for HDPE. not the cheapest stuff in the world, though.
https://www.tapplastics.com/product/rep ... hesive/435
by Drunkskunk
Jul 09 2019 3:03pm
Forum: E-Bike Technical
Topic: velomini 3 help please
Replies: 2
Views: 234

Re: velomini 3 help please

Sure sounds like an old, worn out battery to me.