Search found 7100 matches

by Drunkskunk
Jun 04 2020 8:18pm
Forum: E-Bike General Discussion
Topic: Frame building beginner
Replies: 3
Views: 114

Re: Frame building beginner

Looks like a fun project. I hope you'll post pics as you go - 0.035" wall is likely overkill, but I went with 0.065" when I built mine, as it's still thin, but was easier for me to get a good weld. - A hole saw, a vise, and a drill press are all you need. an actual pipe notcher is luxury. get one if...
by Drunkskunk
Jun 04 2020 2:59pm
Forum: E-Bike General Discussion
Topic: Surplus of blown controllers
Replies: 15
Views: 221

Re: Surplus of blown controllers

It depends on why they blew. If the FETs got over stressed and blew, then replacing them is straightforward enough. it's only a question of time VS money. I had this happen last month, popped a $35 controller. I'm pretty sure it was the voltage regulator after the throttle with the battery light got...
by Drunkskunk
Jun 02 2020 10:53pm
Forum: E-Bike General Discussion
Topic: Sine wave controller?
Replies: 2
Views: 124

Sine wave controller?

Anyone have a recommendation for a good, cheap sinewave controller for a 36-52v 350w direct drive? My little folder bike is the nosiest ebike I've ever rode, and it's all down to the controller. I'm not wanting to spend much on it, as this particular bike gets used under 5 weeks a year, mostly for t...
by Drunkskunk
May 26 2020 12:53pm
Forum: E-Bike General Discussion
Topic: controller inside motor?
Replies: 3
Views: 97

Re: controller inside motor?

If you only ride the bike on nice days for a few miles without stressing it too hard, then sure. this is a great idea to save space. For anything else, it's a bad idea. Magic Pi makes it workable at low power levels by having an absolute giant motor shell, able to radiate off it's heat buildup fairl...
by Drunkskunk
May 23 2020 9:17pm
Forum: E-Bike General Discussion
Topic: Geared hub fat bike.
Replies: 12
Views: 324

Re: Geared hub fat bike.

Welcome to the forum. If you want a geared hub, get one. And the best one for this kind of application is the MAC 10t or 12t. EM3ev has them, while Ebikes.ca sells the GMAC, which is a similar version with no clutch, so no freewheel. the best way to get the EM3ev version is buy the bare motor, (chea...
by Drunkskunk
May 18 2020 12:48pm
Forum: E-Bike General Discussion
Topic: Fast long-range cheap tourer[emoji2]
Replies: 25
Views: 729

Re: Fast long-range cheap tourer[emoji2]

50kph takes around 1100 watts for an ebike to maintain on flat ground with no headwind, give or take 100 watts. you plan to input ~150 watts, which is a massive human effort 100km, so lets round down to an even 1000 watts. at 50km, you need 1000 watts output from the battery for 2 hours to go 100km ...
by Drunkskunk
May 18 2020 5:19am
Forum: E-Bike General Discussion
Topic: eZee vs MAC? Your thoughts?
Replies: 19
Views: 461

Re: eZee vs MAC? Your thoughts?

If they both meet your needs and are therefor a tie, here's a tie breaker: Spare parts availability. When you strip the gears, which one can you get easily parts for?
by Drunkskunk
May 17 2020 4:43am
Forum: E-Bike General Discussion
Topic: Ooh, the choice paralysis of DIYing
Replies: 12
Views: 351

Re: Ooh, the choice paralysis of DIYing

If you're just starting out, you need to understand that Ebikes are addictive. If you get a taste for it, you will build several. There isn't really a "maybe" to it. So plan your first bike like it was always going to be a "First" bike. Keep it simple. Since you plan to commute, let me ask you how i...
by Drunkskunk
May 16 2020 3:29am
Forum: E-Bike General Discussion
Topic: Shorten Hub Motor Axle with Sawzall
Replies: 6
Views: 158

Re: Shorten Hub Motor Axle with Sawzall

That kind of fork is called a Monarch style fork. Great forks. Welcome to the forum. Hey, if you're using one of those hinged disk brake adapters.. don't. There are better alternatives, and they won't require you to cut your motor. The hinged design has no lateral stability, meaning the brake calipe...
by Drunkskunk
May 14 2020 4:24am
Forum: General Discussion
Topic: Hole Rivets for Two Thin Metal Plates?
Replies: 18
Views: 412

Re: Hole Rivets for Two Thin Metal Plates?

An ideal solder job is superior in strength and conductivity to an ideal crimp job, However you can't get 100% consistent solder connections, and you can't properly field inspect a solder connection for fatigue and corrosion. That's why the military and many industries choose crimped connections. Th...
by Drunkskunk
May 12 2020 1:38am
Forum: E-Bike General Discussion
Topic: Busted a bike
Replies: 8
Views: 256

Re: Busted a bike

random search found this thing. It would have to ship from across the pond, but might be worth looking at.
27.2 x 500m extra long steel seat rod
by Drunkskunk
May 11 2020 12:45pm
Forum: E-Bike General Discussion
Topic: Looking for a wheel
Replies: 14
Views: 387

Re: Looking for a wheel

The Dominator2 rim linked above is an ISO 406 rim, with an ERD of 375.5, according to the website. ( here ) ISO 406 is the best of the 20" and most popular with manufacturers, meaning you have the most choices in tires that fit. it's also the same rim size as a motorcycle's 16" tire (they are measur...
by Drunkskunk
May 10 2020 4:31pm
Forum: E-Bike General Discussion
Topic: Tangent Giant DH Revival Build
Replies: 19
Views: 620

Re: Need Advice for High Powered Mid-Drive

The CC Phoenix Edge HV 80 is rated for 12 S, 50.4v max. So if you had it on 14s, there's your problem. I haven't contacted them in a few years, but CC used to do repair work if you did something beyond warranty, like smacked it into the ground at 180mph. It was never cheap, but was usually cheaper t...
by Drunkskunk
May 10 2020 9:55am
Forum: General Discussion
Topic: What limits the speed of an electric Vespa?
Replies: 8
Views: 287

Re: What limits the speed of an electric Vespa?

I have the impression that the difference in these kits is determined by the controller capacity and the motor capacity is irrelevant, for several reasons (any thoughts): 1. It is a lot easier to customize the specs of an electronic (controller) than a mechanical/electric component (motor) 2. I dou...
by Drunkskunk
May 09 2020 8:15pm
Forum: E-Bike Technical
Topic: EBIKE using Lawn mower batteries
Replies: 17
Views: 447

Re: EBIKE using Lawn mower batteries

Welcome to the forum. -It depends on what your goals are and what you plan to use the bike for. 120v will spin most ebike motors up to freeway speeds, but at those speeds, the batteries themselves will likely fry trying to supply enough amps. QS 273 can handle that voltage and the power to handle th...
by Drunkskunk
May 09 2020 4:09pm
Forum: E-Bike Technical
Topic: Unloaded vs Loaded Speed?
Replies: 22
Views: 579

Re: Unloaded vs Loaded Speed?

What do you plan to use for a controller? With such a low voltage system, you are going to need to pull massive amps.
by Drunkskunk
May 09 2020 11:22am
Forum: E-Bike General Discussion
Topic: Street strider fat ebike?
Replies: 3
Views: 134

Re: Street strider fat ebike?

I think it must be the spring fever due to no work from Covid19, I got an idea to build one of kind street strider fat elliptical bike to ride off-road/on beach..... It sounds like the kind of project my friend and I have been coming up with to stave off the boredom. His last idea was putting a row...
by Drunkskunk
May 06 2020 3:17am
Forum: E-Bike General Discussion
Topic: Mid-drive motor on an enduro bike frame
Replies: 47
Views: 1093

Re: Mid-drive motor on an enduro bike frame

The new version of the 138 70h looks like it has a good mounting system. But the motor is huge. You couldn't fit it on the stock swing arm, there isn't a place for it. And it's wider than the pedals by a lot. You might be able to use the bike as a base, but likely have to ditch pedals for motorcycle...
by Drunkskunk
May 05 2020 10:12pm
Forum: E-Bike General Discussion
Topic: Thoughts on this setup.
Replies: 33
Views: 824

Re: Thoughts on this setup.

Sounds like a cool project. hope you post pics when you're done. As a rough outline, seems fine. those Spokes are good for a motorcycle wheel, but you didn't specify what size motorcycle rim you're going to use. Since you're worried about overheating, I'd go for the smallest rim size you can fit. I ...
by Drunkskunk
May 04 2020 3:42am
Forum: E-Bike General Discussion
Topic: Front hub kit overheating and waterproofing questions
Replies: 6
Views: 310

Re: Front hub kit overheating and waterproofing questions

I followed that link, and good news. Your motor is a Bafang geared motor, and the seller is Bafang themselves. Bafang is one of the better Ebike motor manufacturers, and sell most of their product to big companies to build ebikes with. There is a lot of information out there on the Bafang 500w motor...
by Drunkskunk
May 04 2020 3:28am
Forum: E-Bike General Discussion
Topic: Smart e bike motor magnets
Replies: 6
Views: 267

Re: Smart e bike motor magnets

The magnets should be north south in the 3 phase motor. I'm not sure on the Bionx 5 phase motors. Motor magnets are proprietary, and not something you can buy off the shelf. The size, the geometry of the curve, the mass, and the Gauss rating are all super critical to get right, and are specifically ...
by Drunkskunk
May 02 2020 8:26pm
Forum: E-Bike General Discussion
Topic: Front hub kit overheating and waterproofing questions
Replies: 6
Views: 310

Re: Front hub kit overheating and waterproofing questions

Welcome to the forum. What type of kit do you have, and what brand? The type of motor you have makes a big difference, but in general, there are two types of hub motors: Geared, and Direct drive. Both will make some noise when they have to work harder, such as climbing a hill. The louder the noise, ...
by Drunkskunk
May 02 2020 7:20pm
Forum: E-Bike General Discussion
Topic: Charger Dead, BMS fried??
Replies: 2
Views: 147

Re: Charger Dead, BMS fried??

It could mean the charger is dead. it could also mean one cell in the battery has died and the charger refuses to charge a failed battery. But it's hard to tell without more information. We need to know what type and brand of battery you have, one type and brand of charger you have. Do you charge th...
by Drunkskunk
Apr 30 2020 1:36pm
Forum: E-Bike Technical
Topic: Help with Ebike charger repair?
Replies: 2
Views: 134

Re: Help with Ebike charger repair?

How positive are you that the Ebike's battery is good? many Lithium chargers will not attempt to charge the battery if they detect a problem, such as the battery's voltage being too low.
by Drunkskunk
Apr 30 2020 8:44am
Forum: General Discussion
Topic: Developing eLegs / exoskeleton for sports, an OpenSource project
Replies: 11
Views: 1824

Re: Developing eLegs / exoskeleton, an OpenSource project

dude, that thing is awesome. I may have to build one.