Search found 6884 matches

by MadRhino
Sep 28 2020 4:30pm
Forum: E-Bike General Discussion
Topic: Phaserunner acceleration
Replies: 4
Views: 110

Re: Phaserunner acceleration

The most brutal acceleration can be achieved with the most simple controllers. Put your money on the highest C-rate batteries that you can afford, for they are the most important factor of acceleration. Then, any controller I guess, has (or should have) a way to bypass all limitations and let the ba...
by MadRhino
Sep 28 2020 11:44am
Forum: E-Bike General Discussion
Topic: Enduro E-Bike Build, Totally Lost, Help and Advice Needed Please..
Replies: 1
Views: 60

Re: Enduro E-Bike Build, Totally Lost, Help and Advice Needed Please..

It is impossible to estimate your battery need if we don’t have your ride parameters. Avoid Chinese frames if you have the money or the opportunity. A QS 205 H50 v3 can be safely fed up to 25kw peak in acceleration. 50 mph off road does require top suspension components and proper tuning. When the b...
by MadRhino
Sep 27 2020 8:10am
Forum: E-Bike General Discussion
Topic: Hall sensor repair..quick question
Replies: 11
Views: 212

Re: Hall sensor repair..quick question

Hall sensors don’t even need to be installed to be tested. If they are testing good, you don’t need to re-assemble the motor to conclude that it is the controller (or wiring) that is at fault.
by MadRhino
Sep 25 2020 3:10am
Forum: E-Bike General Discussion
Topic: Light for ebike 6d light connections
Replies: 18
Views: 273

Re: Light for ebike 6d light connections

False problem. A DC-DC converter does install on the bike, not the battery. When you swap and plug a new battery, it doesn’t change a thing that the bike has a 12v circuit. When we say take the current from the battery, it does mean on the red and black controller wires, not the battery wires. A 12v...
by MadRhino
Sep 24 2020 11:07pm
Forum: E-Bike General Discussion
Topic: a bike for my wife
Replies: 22
Views: 858

Re: a bike for my wife

Yep. A happy wife is well worth a sh*t bike if she wants it. Maybe some don’t know yet, the ultimate cost of an unhappy wife. :roll:
by MadRhino
Sep 24 2020 7:05pm
Forum: E-Bike General Discussion
Topic: Light for ebike 6d light connections
Replies: 18
Views: 273

Re: Light for ebike 6d light connections

First you need a 12v circuit. So you need to buy a DD-DC converter, a fuse holder, and switch(es). The red and black are for the normal mode. You power with the red+, and switch modes with the 3 other wires-, work light mode is black, DHO is yellow and strobe is white. DHO needs a solder and a gask...
by MadRhino
Sep 24 2020 9:04am
Forum: E-Bike General Discussion
Topic: Panasonic tesla cell battery?
Replies: 13
Views: 374

Re: Panasonic tesla cell battery?

Battery world is crowded with liars and crooks. I have seen some new 2170 cells at 1$ a piece in 1000 pk from China. Is there someone naïve enough to believe they are genuine?
by MadRhino
Sep 24 2020 8:45am
Forum: E-Bike General Discussion
Topic: Light for ebike 6d light connections
Replies: 18
Views: 273

Re: Light for ebike 6d light connections

First you need a 12v circuit. So you need to buy a DD-DC converter, a fuse holder, and switch(es). The red and black are for the normal mode. You power with the red+, and switch modes with the 3 other wires-, work light mode is black, DHO is yellow and strobe is white. DHO needs a solder and a gaske...
by MadRhino
Sep 22 2020 8:16am
Forum: E-Bike General Discussion
Topic: Charger Recommendation for 24V or 36V batteries
Replies: 19
Views: 297

Re: Charger Recommendation for 24V or 36V batteries

SLA batteries don’t need balancing and can be charged pretty fast. I would use a simple PSU, or a SLA charger.

Their downsides are poor density and short life. Their performance decreases quickly. If you plan higher voltage and longer range, Li chemistries would be a good investment.
by MadRhino
Sep 22 2020 12:39am
Forum: E-Bike General Discussion
Topic: Charger Recommendation for 24V or 36V batteries
Replies: 19
Views: 297

Re: Charger Recommendation for 24V or 36V batteries

Would be good to know battery type at least. From your post I would be tempted to think SLA, which is very uncommon nowadays.
by MadRhino
Sep 22 2020 12:25am
Forum: E-Bike General Discussion
Topic: How often do you test your charger?
Replies: 9
Views: 238

Re: How often do you test your charger?

Every time. I bulk charge using big power supplies. No BMS, no automation of any kind. I have to set and monitor charging myself, but it does complete in a very short time, so I am never tempted to leave for any reason.
by MadRhino
Sep 20 2020 11:45am
Forum: E-Bike General Discussion
Topic: a bike for my wife
Replies: 22
Views: 858

Re: a bike for my wife

Consider a cargo. I mean, if you will have another kid. :wink:
by MadRhino
Sep 20 2020 5:55am
Forum: E-Bike General Discussion
Topic: Fat tires for class 3+ urban utility bikes?
Replies: 20
Views: 1875

Re: Fat tires for class 3+ urban utility bikes?

owhite wrote:
Sep 20 2020 4:01am
On the Chaoyang tire, what's this interior portion that's shown in the picture?

Image

is that just a rim with no spokes that will not ship with the tire?
It is the rim that you see in this pic. It does have rectangular holes through which you see the rim band.
by MadRhino
Sep 19 2020 9:25am
Forum: E-Bike General Discussion
Topic: What kind of sealant for hub motors? Some general information also
Replies: 4
Views: 171

Re: What kind of sealant for hub motors? Some general information also

Hub motors are simple and reliable. Protection measures are required only in extreme abuse. You can ride in the rain for a decade with the cheapest of them. It is the rest of the components that need waterproofing, all connectors especially.
by MadRhino
Sep 16 2020 6:41pm
Forum: E-Bike General Discussion
Topic: Assembling a safe fast ebike
Replies: 58
Views: 2902

Re: Assembling a safe fast ebike

Faster speed and higher trafic density are letting a rider less time and opportunity to see. Unpredictable situations are happening to me 3-4 times a year, even after 55 yrs riding without any serious consequences. I hit a car once in a while, well let’s say I like bumping them when they do a U-turn...
by MadRhino
Sep 16 2020 3:24pm
Forum: E-Bike General Discussion
Topic: Van Moof
Replies: 8
Views: 254

Re: Van Moof

Van Moof (Carlier brothers) started with a thief recovery system. They posted vids of their stolen bikes recovery expeditions on YouTube, and had a big success. Their ebike is a continuity, surfing on their popularity. It is too expansive and has design flaws that we, DIY builders, are finding ridic...
by MadRhino
Sep 16 2020 3:03pm
Forum: E-Bike General Discussion
Topic: (What is) The Best Damn 500W (front) Hub Money Can Buy?
Replies: 20
Views: 546

Re: (What is) The Best Damn 500W (front) Hub Money Can Buy?

Likely to be willing to build on the rear now. That is making the original question obsolete and the Leaf motor the best solution.
by MadRhino
Sep 16 2020 8:38am
Forum: E-Bike General Discussion
Topic: Looking for a "get 'er done" no weld no solder battery assembly solution
Replies: 7
Views: 340

Re: Looking for a "get 'er done" no weld no solder battery assembly solution

A dozen bricks of RC lipo seems so simple after reading your post. I wonder why so many are into building batteries with hundreds of round cells. Automotive cells don't take dozens of bricks, and don't burn your house to the ground nearly so often. Actually, since lico chemistry had taken over the ...
by MadRhino
Sep 16 2020 12:57am
Forum: E-Bike General Discussion
Topic: Looking for a "get 'er done" no weld no solder battery assembly solution
Replies: 7
Views: 340

Re: Looking for a "get 'er done" no weld no solder battery assembly solution

A dozen bricks of RC lipo seems so simple after reading your post. I wonder why so many are into building batteries with hundreds of round cells.
by MadRhino
Sep 15 2020 6:59pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 861

Re: Is DIY dying?

In terms of HP per Kg, the DIY crowd is far ahead of the ebike market. Light weight has that meaning too. In terms of absolute weight, no DIY builder can compete with the major bike manufacturers. Batteries will change. We are all waiting for better density. The more the industry will demand better ...
by MadRhino
Sep 15 2020 4:58pm
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 33
Views: 861

Re: Is DIY dying?

Well, there might be fewer legal speed DIY ebike builders, but the high speed powerful ebikes will be DIY for a long time ahead. And, we all know that after riding legal speed ebikes, many will want better. So far, the market is very shy of fast ebikes. They care about the laws, and want to target t...
by MadRhino
Sep 15 2020 3:00pm
Forum: E-Bike General Discussion
Topic: Newbie on a home made ebike. Can't set controller.
Replies: 39
Views: 749

Re: Newbie on a home made ebike. Can't set controller.

Yep. No equipment can be trusted. I don’t even use a BMS. Battery at storage voltage unplugged off anything when not in use. Charging under direct supervision. Then, I charge bulk and fast, so never tempted to leave them charging alone.
by MadRhino
Sep 15 2020 2:47pm
Forum: E-Bike General Discussion
Topic: Problem with Sabvoton SVMC 96120 - NO CUSTOMER SERVICE
Replies: 2
Views: 88

Re: Problem with Sabvoton SVMC 96120 - NO CUSTOMER SERVICE

First test the motor wiring with a multimeter, controller unplugged. You may have a problem in the wiring. Test for a short first, continuity test between each phase and the axle. Then impedance test phases against each other. Test the hall wires. The red and black continuity against the axle and ag...
by MadRhino
Sep 15 2020 11:02am
Forum: E-Bike General Discussion
Topic: Assembling a safe fast ebike
Replies: 58
Views: 2902

Re: Assembling a safe fast ebike

Different cities, different idiots. Here the worst are U-turns and illegal left turns. Most of the important streets here are left turn forbidden and U-turns are forbidden everywhere. When cagers do it, they know it is illegal. So they don’t signal and do it quick. They are more concerned about look...
by MadRhino
Sep 14 2020 9:40pm
Forum: E-Bike General Discussion
Topic: EMCT1441 how to connect this controller?
Replies: 5
Views: 97

Re: EMCT1441 how to connect this controller?

8.64 $ ?

I would keep the case to make an ash tray. :mrgreen:

Use a multimeter. Test it first. At least you will know where you have 5v, and where you have the full voltage. That is a start, and likely to help you to turn it on.