Search found 538 matches

by kbarrett
Feb 10 2009 3:35pm
Forum: E-Bike General Discussion
Topic: Destroying motor by demagnetization
Replies: 26
Views: 2173

Re: Destroying motor by demagnetization

It is also possible to use some complex tricks with individual motor wires and capacitors to demag individual magnets and turn the energy into current. Several supposed perpetual motion gadgets on youtube abuse this ... the video makers never want to talk about how the motors they abused generating ...
by kbarrett
Feb 10 2009 3:31pm
Forum: E-Bike General Discussion
Topic: Destroying motor by demagnetization
Replies: 26
Views: 2173

Re: Destroying motor by demagnetization

Yeah, its been a decade and a half since freshman Emag, but from what I remember: in addition to heat and the presence of an overwhelming magnetic field, if you strike a magnet with a hammer or something you may disturb it enough to have it lose its properties. You can also use a hammer strike to m...
by kbarrett
Feb 10 2009 3:09pm
Forum: E-Bike General Discussion
Topic: lipo fire proof box :P filled with minaral oil
Replies: 20
Views: 2083

Re: lipo fire proof box :P filled with minaral oil

The oil probably helps prevent atmospheric Oxygen from getting at the batteries. Drowning in diesel fuel is the proper way to put out light metal ( Sodium, Lithium, Magnesium ) fires. Water just makes them burn faster ( the metal can actually rob Oxygen from H2O when burning ). The resulting diesel ...
by kbarrett
Feb 10 2009 3:04pm
Forum: E-Bike General Discussion
Topic: GoCycle
Replies: 37
Views: 4733

Re: GoCycle

philf wrote: I weigh exactly 220lbs. Naked.

Eeeek.
Ride naked. No problem.
by kbarrett
Feb 10 2009 2:58pm
Forum: E-Bike General Discussion
Topic: rude road bikers (ie lycra"s or clown shirts etc)
Replies: 18
Views: 4703

Re: rude road bikers (ie lycra"s or clown shirts etc)

Every group has its percentage of a-holes ... bicyclists are no exception.

Just point and larf at them.
by kbarrett
Feb 10 2009 2:50pm
Forum: E-Bike General Discussion
Topic: I need a pedelec because the police are going crazy
Replies: 24
Views: 3040

Re: I need a pedelec because the police are going crazy

nutsandvolts wrote:I thought their job was to um ... protect people.
Nope ... that's just so 19th Century ... Seriously, they can't protect you. They can only, at best, arrest the guilty afterwards.

I'm going to drop out of this one, as it is starting to veer out of e-bike territory fast.
by kbarrett
Feb 10 2009 2:33pm
Forum: E-Bike General Discussion
Topic: I need a pedelec because the police are going crazy
Replies: 24
Views: 3040

Re: I need a pedelec because the police are going crazy

Being unusual gets you attention.

Cops, when you get their attention, think "Is he breaking a law or causing trouble?"

It's their job to do that.
by kbarrett
Feb 10 2009 2:18pm
Forum: E-Bike General Discussion
Topic: I need a pedelec because the police are going crazy
Replies: 24
Views: 3040

Re: I need a pedelec because the police are going crazy

I have been to Japan many times (I think 8 times) and I had no idea it was like that. All I can say is wow. The idea of having to conform disturbs me. Trying to make me conform to anything is like herding cats. People were cutting you slack as a gaijin ... they will do that, to a point. Talk to a l...
by kbarrett
Feb 10 2009 1:57pm
Forum: E-Bike General Discussion
Topic: I need a pedelec because the police are going crazy
Replies: 24
Views: 3040

Re: I need a pedelec because the police are going crazy

This is such a sad story to read about. If someone in a car, who isn't paying attention, like typing text messages on a phone or whatever, runs into and kills someone on a bicycle, in most cases, nothing happens! Yet due to this lack of a sensor that makes it so you have to pedal, they're locking p...
by kbarrett
Feb 03 2009 5:28pm
Forum: E-Bike General Discussion
Topic: Need a low-comsumption tractor. Don't want speed
Replies: 15
Views: 1106

Re: Need a low-comsumption tractor. Don't want speed

You can get a wheeled brushed motor, controller, and thumb throttle for about $325 or so here:

http://www.werelectrified.com/SearchResults.asp?Cat=25

There are a bunch of other vendors as well, like Justin at ebikes.ca, etc. ...
by kbarrett
Feb 03 2009 5:16pm
Forum: E-Bike General Discussion
Topic: Need a low-comsumption tractor. Don't want speed
Replies: 15
Views: 1106

Re: Need a low-comsumption tractor. Don't want speed

Would you please explain further ? I told you I was a mechanical moron :-) And does it make more noise than a brushless ? Thanks a lot Philippe A bit more noise, yes. A controller on a brushed motor allows you to gradually add power with a thumb or a twist throttle. Replacing it with a simple knife...
by kbarrett
Feb 03 2009 4:41pm
Forum: E-Bike General Discussion
Topic: Need a low-comsumption tractor. Don't want speed
Replies: 15
Views: 1106

Re: Need a low-comsumption tractor. Don't want speed

Crystalite 408, either front or rear hub ( your option ) and a 36V pedalec controller ( avoid immediate start, if the hall sensors go, you are screwed ). Or get even simpler and do a DC brushed Clyte ( controller optional, you can fake it with a large knife switch ... be sure to hold on ). DC brushe...
by kbarrett
Feb 02 2009 6:40pm
Forum: E-Bike General Discussion
Topic: I need a pedelec because the police are going crazy
Replies: 24
Views: 3040

Re: I need a pedelec because the police are going crazy

It's Japan. Blaming the group for a bad act by an individual is a cultural norm there. It would be unthinkable for them not to. The reason for the 100% conviction rate is that once you get arrested in Japan, you are screwed ... people assume you are a criminal, you can no longer get a good job, etc....
by kbarrett
Aug 14 2008 11:00am
Forum: E-Bike General Discussion
Topic: Mounting your battery, Center of Gravity.
Replies: 475
Views: 42266

Re: Mounting your battery, Center of Gravity.

The lower the better. Putting one heavy battery in a panier is better then putting it on the rack, even if it is unbalanced.
by kbarrett
Aug 14 2008 10:57am
Forum: E-Bike General Discussion
Topic: E-Cumbent Vision R40: 80v*30a, Xlyt 404, 20", C7220PF
Replies: 38
Views: 7488

Re: E-Cumbent Vision R40: 80v*30a, Xlyt 404, 20", C7220PF

Some of the more spendy house light switches do use mercury capsules to do the switching ... mercury doesn't erode from sparks. This would make them unsuitable for use on anything that moves about. One good bump, or a steep turn will cause them to switch on or off. Try a cheaper switch. Test your cu...
by kbarrett
Aug 14 2008 10:45am
Forum: E-Bike Technical
Topic: Noob help with hub motor (brushless controller needed)
Replies: 20
Views: 1766

Re: Noob help with hub motor (brushless controller needed)

That looks a lot like a Crystalyte 4XX motor, and, yes, the 3 thick/5 thin wires means that it's brushless. The three thick ones are for power, and the five thin ones are power and signal from the hall sensors. Easiest thing to do is to get a 36V brushless controller. They're not too pricey if they...
by kbarrett
Aug 14 2008 10:37am
Forum: E-Bike Technical
Topic: New member; questions
Replies: 4
Views: 633

Re: New member; questions

Charge it up. Then unplug it completely. Always recharge an SLA immediately after use. If you have unused SLAs laying around, you should charge them once every few months. Haven't a clue about the extra P position on the switch. You should be able to remove the key in the off position. Spray the loc...
by kbarrett
Aug 14 2008 10:31am
Forum: E-Bike Technical
Topic: $170 dollar spokes .....
Replies: 14
Views: 1167

Re: $170 dollar spokes .....

Short spokes are more fragile due to torque loading. Since you cannot do a cross three wheel build with a small rim and a big hub, you have all the spokes getting torque applied to the sides of the spoke, instead of up and down its length. weight + bump in road + torque against side of spoke = break...
by kbarrett
Aug 11 2008 2:57pm
Forum: E-Bike General Discussion
Topic: What would you recommend?
Replies: 20
Views: 2263

Re: What would you recommend?

You can buy heinzmanns in Germany: http://www.estelle.de/e/motoren.asp The geared Heinzmanns will be more efficient ... Crystalyte 530x motors will be faster and more powerful, but at a cost of high Ah usage. C'lyte 40x motors would be a bit more efficient, but the 408 and 4011 motors required for h...
by kbarrett
Aug 11 2008 2:47pm
Forum: E-Bike General Discussion
Topic: Interesting Range results!!!
Replies: 15
Views: 1361

Re: Interesting Range results!!!

Yep ... LiFePO4 will go all they way to the end without any real sag. My ping pack starts at 40V, and will go all the way down to about 30V before the BMS shuts them down ... and will have put out 16.5 AH total. The drop from 33V to 30V is steep and damned fast. LiFePO4 will dump its rated load, and...
by kbarrett
Aug 11 2008 10:18am
Forum: E-Bike Technical
Topic: $170 dollar spokes .....
Replies: 14
Views: 1167

Re: $170 dollar spokes .....

Link: my 'bent has no suspension ... and I commute with it. Commuting will reveal ANY weakness in a bike. The radial factory c'lyte spokes and rim were apparently made of "anti-metal" ... the spokes went within a month. A new set of Justin's went on ... and then the c'lyte rim started to come apart ...
by kbarrett
Aug 10 2008 1:17am
Forum: E-Bike Technical
Topic: $170 dollar spokes .....
Replies: 14
Views: 1167

Re: $170 dollar spokes .....

I'm rather heavy. I ordered a set of top quality 13s for the Heinzmann from Justin at ebikes.ca, and started breaking the damned things immediately at the nipples. The 13mm ebikes.ca radial laced spokes on the c'lyte lasted longer, but the original c'lyte rim came apart. The c'lyte is on my wife's b...
by kbarrett
Aug 09 2008 9:39pm
Forum: E-Bike Technical
Topic: $170 dollar spokes .....
Replies: 14
Views: 1167

$170 dollar spokes .....

1/8" diameter, huge nipples, custom cut stainless for a 20" cross once wheel. An extra nine spares for each side. I think these things were originally made for motorcycles. $170 from hiwheel.com . Ouch ... but done. I had to drill out both the hub and the Rhyno-lite rim to make this mess fit. DSCN06...
by kbarrett
Aug 07 2008 6:58pm
Forum: E-Bike General Discussion
Topic: Introduction
Replies: 10
Views: 958

Re: Introduction

My geared Heinzmann was more efficient than the gearless c'lyte 405 it replaced.

Brushless does not always mean better.