Search found 7343 matches

by MadRhino
Jul 20 2021 10:37am
Forum: EBike General Discussion
Topic: Cassette reverse cog stack - large to small
Replies: 4
Views: 152

Re: Cassette reverse cog stack - large to small

Why making it simple when a stupid dream gave you the ultimate complication. :mrgreen: Reminds me of a friend who woke up with this idea of reversing the steering on his bike. Now steering left does make the wheel turn right. Took him a week to make it, and a month to learn to ride it. At least he g...
by MadRhino
Jul 20 2021 3:32am
Forum: EBike General Discussion
Topic: little person bike...
Replies: 20
Views: 387

Re: little person bike...

Lots of cheap small motor wheels with integrated rim, 10 inch being the most popular and makes about 15 inch OD with the tire on.
by MadRhino
Jul 19 2021 7:35pm
Forum: EBike General Discussion
Topic: What controller for more amps?
Replies: 10
Views: 244

Re: What controller for more amps?

You probably could just mod your actual controller to feed much more power, by adding an extra shunt and beefing the traces. The question is: can your battery supply this extra current? DD motors can take a lot of power when they are on the heavy side, fast winding and smaller wheels especially. Fro...
by MadRhino
Jul 19 2021 7:11pm
Forum: EBike General Discussion
Topic: Does this look safe?
Replies: 24
Views: 381

Re: Does this look safe?

Good. You got 45 minutes of reliability, yet. If you can get 45 days, then you can begin to hope. :D

Check Vicor for quality DC/DC converters.
by MadRhino
Jul 17 2021 10:26pm
Forum: EBike General Discussion
Topic: Does this look safe?
Replies: 24
Views: 381

Re: Does this look safe?

If SAFE means it won’t set fire to your bike, this is about where you plan to place it. It can be installed perfectly safe.

If SAFE means reliable, forget that kind. You need to put more money for a good, reliable DC/DC converter.
by MadRhino
Jul 17 2021 10:15pm
Forum: EBike General Discussion
Topic: Motor moving by itself??
Replies: 4
Views: 108

Re: Motor moving by itself??

Check for throttle ground wire almost cut, or ground circuit almost interrupted at connector contact. A poor neutral continuity does make voltage surges on a circuit.
by MadRhino
Jul 17 2021 9:53pm
Forum: EBike General Discussion
Topic: little person bike...
Replies: 20
Views: 387

Re: little person bike...

I think you’d better ask her first if she wants to pedal. I mean, maybe she likes riding more than cycling. It would give a different approach to the project.
by MadRhino
Jul 17 2021 6:16pm
Forum: EBike General Discussion
Topic: Are fans needed to cool down battery packs?
Replies: 9
Views: 226

Re: Are fans needed to cool down battery packs?

You could place a probe in your battery case and attach the temp monitor to the handlebar. Then you will know if cooling is necessary. If it is, simple means of improving air flow are doing fine most of the time. Active cooling, when necessary, should be liquid ideally, and combined with heating cap...
by MadRhino
Jul 17 2021 7:29am
Forum: EBike General Discussion
Topic: float charging lifepo4
Replies: 19
Views: 267

Re: float charging lifepo4

That is a fail redundancy. Your ‘infinite range’ is an utopia and does rely on two systems with each their own vulnerabilities. Twice as many chances to fail, with a considerable efficiency loss and performance limitation. If you are going to burn gas to travel, why would you want to handicap the ef...
by MadRhino
Jul 17 2021 7:13am
Forum: EBike General Discussion
Topic: Challenges of Securing Products
Replies: 5
Views: 136

Re: Challenges of Securing Products

Shipping from foreign countries had always been a risk, but the buyer’s protections had never been so safe as they are now. All major credit cards are offering internet purchase protection, making it safe and easy to obtain a complete refund for a product that was not received, or not conform to exp...
by MadRhino
Jul 15 2021 10:27pm
Forum: EBike General Discussion
Topic: First Ebike: Too much Battery ?
Replies: 19
Views: 440

Re: First Ebike: Too much Battery ?

Well, one could limit the bike to the point of no concern, or keep for his own judgement the choice of extra power, how much and how long is suitable to be. I feed almost 10 times the continuous rated power of my DD motor in a hard acceleration, but It doesn't fry, because I know how long is too muc...
by MadRhino
Jul 14 2021 10:17am
Forum: EBike General Discussion
Topic: First Ebike: Too much Battery ?
Replies: 19
Views: 440

Re: First Ebike: Too much Battery ?

Yep. Not a drama anyway, to fry a small hub motor. Motors are cheap. If you need to babysit your motor, it is because it is obviously too small. Then you buy a bigger one now, to have it on a shelf when the small one fries.
by MadRhino
Jul 14 2021 10:06am
Forum: EBike General Discussion
Topic: Anyone else here feel guilty?
Replies: 34
Views: 832

Re: Anyone else here feel guilty?

Thanks. I'm glad I gave someone a chuckle. I'd like to think I've been a fairly nice person to those around me, but "feeling guilty" is based on caring about what other people think about me. I think I used to care about what other people thought about me, but one day, I tried to pay my b...
by MadRhino
Jul 13 2021 11:54pm
Forum: EBike General Discussion
Topic: little person bike...
Replies: 20
Views: 387

Re: little person bike...

It is definitely a custom job, or a kid’s racing specialty bike. I mean, most of kid's bikes are weak, poorly built for a small adult. The example of a BMX is good, because racing grade BMX bikes are tough and very well built. Any racing quality bikes of other specialties for kids would be good too....
by MadRhino
Jul 13 2021 11:30pm
Forum: EBike General Discussion
Topic: First Ebike: Too much Battery ?
Replies: 19
Views: 440

Re: First Ebike: Too much Battery ?

You never have too much battery, unless you are racing. When weight is a major factor and extra battery capacity is a nuisance. The current fed to the motor is set in the controller program. Your battery could be too small to supply the controller setting, but it will never be too big as to cause da...
by MadRhino
Jul 12 2021 6:26am
Forum: EBike General Discussion
Topic: Surrey Bikes: Paging Chalo
Replies: 22
Views: 467

Re: Surrey Bikes: Paging Chalo

After the Revive, the Surrey!
You are a client for weird bikes...
:mrgreen:

I now wonder what next.
:D
by MadRhino
Jul 11 2021 2:49pm
Forum: EBike General Discussion
Topic: These 250W ebikes (toys) are very popular
Replies: 8
Views: 358

Re: These 250W ebikes (toys) are very popular

onemorejoltwarden wrote:
Jul 11 2021 10:15am
Surprise, surprise.
News Flash
People impulsively buy trashy expensive toys.

Tweaker builds silly stuff
News at 10
But !
Kids are conditioned for ebikes with toys. Building future riders.
A mission.
:twisted:
by MadRhino
Jul 10 2021 3:22pm
Forum: EBike General Discussion
Topic: Anyone else here feel guilty?
Replies: 34
Views: 832

Re: Anyone else here feel guilty?

spinningmagnets wrote:
Jul 10 2021 3:07pm
I'm not sure what guilt "feels like"
It is supposed to feel like paranoïa, only directed toward yourself. :D
by MadRhino
Jul 10 2021 3:14pm
Forum: EBike General Discussion
Topic: Bringing Ebike from US to Portugal
Replies: 10
Views: 290

Re: Bringing Ebike from US to Portugal

You are not shipping from one state to another within the US. International shipping has strict safety rules, but it doesn’t mean there aren’t shippers who cheat. Any bike that is in a case or a box can be transported on a plane, but gassers must be empty and EV batteries removed. Shipping gas or ba...
by MadRhino
Jul 10 2021 2:39pm
Forum: EBike General Discussion
Topic: Anyone else here feel guilty?
Replies: 34
Views: 832

Re: Anyone else here feel guilty?

What have you done to them, that would justify feeling guilty? Maybe you feel that you had betrayed the lycra crowd? Or do you feel guilty for yourself, for being a lazy ass not peddling anymore? None of the above are valid. A rider has no reasons to feel guilty to ride. Or, put a tail sign on your ...
by MadRhino
Jul 09 2021 2:09pm
Forum: EBike General Discussion
Topic: How to chose the right dc plug for charger...
Replies: 11
Views: 279

Re: How to chose the right dc plug for charger...

3 Amps is next to nothing. You don’t really need connectors, just twist the wires together. :mrgreen:

Seriously, any kind of connectors will do, preferably matching the wire size to crimp, but not so important with solder.
by MadRhino
Jul 09 2021 2:00pm
Forum: EBike General Discussion
Topic: Bringing Ebike from US to Portugal
Replies: 10
Views: 290

Re: Bringing Ebike from US to Portugal

Put it in a bicycle transport case and register it as extra luggage at the airport. Only, ship the battery separately via a courrier/transport company who will conform with the rules. UPS, FedEx, DHL, .... they all have a license to ship batteries and people to fill the list of requirements.
by MadRhino
Jul 09 2021 1:52pm
Forum: EBike General Discussion
Topic: These 250W ebikes (toys) are very popular
Replies: 8
Views: 358

Re: These 250W ebikes (toys) are very popular

Those Jetson bikes are so cheap that people are buying it at department stores when shopping for something else. The stores make a display in a center alley with a pyramid of boxes and a huge special price tag. Most are purchased as a gift for kids. Then there is an escalade effect, when many can be...
by MadRhino
Jul 08 2021 8:10pm
Forum: EBike General Discussion
Topic: Full suspension bikes compatible with a frame battery
Replies: 28
Views: 759

Re: Full suspension bikes compatible with a frame battery

They are not easy to make custom torque plates for, but they sure can take high power since I had done over 35000 miles (on and off road) on one that was fed 25 kw acceleration bursts everyday, and a 60 mph top speed. I see this posted on the local Craigslist; $1200. Looks like a good candidate for...
by MadRhino
Jul 08 2021 5:27pm
Forum: EBike General Discussion
Topic: Geared Hub vs Mid-Drive?
Replies: 22
Views: 732

Re: Geared Hub vs Mid-Drive?

Grantmac wrote:
Jul 08 2021 5:13pm
If it uses a standard bottom bracket you could see about mounting the mid-drive there fairly easily.
:thumb:
Even if there isn’t, a common BB could be fitted there pretty easily.