Hauling heavy loads in steep hills.
- Thread starter Renax
- Start date
The plate on the side of the motor is fine. It's only covering up either 'Bafang' or '8FUN'. Correct me if there are units out there with '750w' on the side.
The information on the bottom of the unit is etched, well it is on mine anyway.
Any plate stuck over the top can be easily removed.
I would Dremmel the information off, then coat with some black paint first.
Disclaimer: Do this entirely at your own risk!
Hei,snakk med strømmen elsykkel.Han har div.Men kan anbefale den lovlige Bafang bbs 02 250w 25 a versjonen.den er råsterk om du bruke girene riktig.Han har og 250w fatbike motorer med 80nm såvidt eg vet.
http://www.strommenelsykkel.no/
http://www.strommenelsykkel.no/
Any policeman trying to disassemble my bike will hear from my lawyer...
But yea, I'll use something better than double sided tape to fix it on there...
@1boris: Hei, nå har jeg bestilt 750w versjonen, har ikke god nok råd til å betale mer for den kjipe versjonen...
Men det er noe rart med betegnelsene, om den er 250w på 25A, så er den enten 10V, eller så er den like lite lovlig som min etter jeg har satt 250w klistremerke på den...
Den er visst lovlig,han har snakka med jurist i statens vegvesen om det.Det er ifølge EN 15194 ikkje oppgitt maks ampere.Kun at det er ein merket fra fabrikk 250w motor med maks fart 25kmh .Og 48 volt er maks når det gjelder batteri her.Masse lovlige elsykler med feks 36v 20 amp.Dei blir stadig kraftigere,noke som er umulig om ikkje amperen øker stadig
But if you're lying in hospital after an accident, you may not have any say in whether they can touch your bike or not. They would have already taken it away for inspection by the relevant authorities.
As I say, ride a powerful bike at your own risk, but don't expect a lawyer to get you out of a sticky mess through loopholes.
Enten så kverulerer du, ellers har du ikke greie på strøm..
36Vx20A =720W,
Meen, leste og dobbeltsjekket. motoren må kunne levere over 250w i en time i strekk uten at teperaturen stiger mer enn 2 grader i motoren. så det er jo et fullstendig tullete regelverk som tillater høyere effekt bare motoren blir varm av det...
If you guys feel left out, we're just discussing the legality of a "250w" 36V20A setup VS a 750w 48v setup. As far as I can see, 36v 20A will give pretty much the same power, but they hide behind a loophole. The engine may provide more than 250w, but only for one hour straight, if it can supply more than 250w for one hour straight without the motor heating up by 2 degrees its illegal according to the law. Well, I better hope my motor gets warm..
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Kverulere ikkje,det er sånn reglene er.lovlige elsykler som bosch,yamaha,bh emotion osv har alle over 15a kontrollere.mellom 15a og 25a.Dette er jo snart allmennkunnskap
Har lest litt og forstår mer, og er kommet til konklusjonen at 250w max er en vits, og man må bare passe på at motoren blir varmere om man går over det.Kverulere ikkje,det er sånn reglene er.lovlige elsykler som bosch,yamaha,bh emotion osv har alle over 15a kontrollere.mellom 15a og 25a.Dette er jo snart allmennkunnskap
Grensa på 25km/t derimot er streng, men den har jeg tenkt å beholde...
<det vegvesen og politi i norge sjekker er farten,25 pluss minus 10%.dvs max 27.5.men motoren bør jo ikkje vere merka 750w,så det ville eg fjerna.har ein sånn sjøl.du blir garanter fornøyd.fikk 60kmt på flat asfalt med 29" hjul.viktig med et batteri som kan levere 25a kontinuerlig.ikkje for mange av dei.bms battery har
My last two certified legal e-bikes with identical electrical components have nominally been exactly this, only in the real world the controllers could actually peak at around 28 amps, as the measured 1000 watts gross indicated.
So I don't see any problems on the legality.
.
D
Deleted member 4366
Guest
No that's not right. If you trace through the standards from EN15194, it leads you to a motor power test standard. That standard is to test if the motor meets the rated power. It's not a test to find the maximum power, i.e. if the motor is marked 250w, then you determine the rpm at which it's most efficient, then you run it there at 250w output power for x amount of time. If it doesn't overheat, it passes. There's no requirement anywhere to determine the maximum continuous power that the motor can achieve. If there were, just about every OEM ebike would fail.
Renax, hope you don't think I was being a bit in your face with my comment about the lawyer. It's just we have a topsy-turvy legal system, where someone might get a slap on the wrist for doing something abhorrent, and another banged up for walking down the street in the wrong clothes.
Ok, so it's not that bad, but I hope you get what I mean
The phrase 'you get less for murder' springs to mind
Ok, so it's not that bad, but I hope you get what I mean
The phrase 'you get less for murder' springs to mind
Skal fjerne 750w, og klistre på 250w, som nevnt tidligere her...
Batteriet skal klare hvertfall 40A kontinuerlig, (Samsung 29E celler)
Because thats just about impossible, a 250w motor can easily put out double that for a short time, and then triple for a even shorter time. what is easy is to measure (and or limit) how much power it actually makes in a application. I was under the impression that that was a requirement for a legal ebike. but i guess not..
@Fordulike No worries..
Do not make the assumption that if an on bike display states consumption is Xwatts that that is the power coming from the motor. It is easy to electrically measure voltage and current and simple for a calculator to multiply these together and produce a number called watts. It is less easy to measure the torque produced by the motor which when multiplied by the rotation speed of the motor (easy to measure) would give the mechanical power.
What those simple measurements gives is the power being dissipated by the battery a different animal altogether.
@Danidl : Torque isn't that relevant here, "if I was king" I'd say a 250w motor running on 36V must have a 7.5A fuse.
If you are hellbound on limiting it for how much power they actually produce rather than what they consume then do so, they manage to do so for both mopeds and cars don't they?
In this case the motor can produce 3kW in real life, but because the company who makes them markets them as "250W" its street legal. just seems silly to have any restrictions at all if you can get around them by just straight up lying...
But this tread has gone horribly off topic now....
If you are hellbound on limiting it for how much power they actually produce rather than what they consume then do so, they manage to do so for both mopeds and cars don't they?
In this case the motor can produce 3kW in real life, but because the company who makes them markets them as "250W" its street legal. just seems silly to have any restrictions at all if you can get around them by just straight up lying...
But this tread has gone horribly off topic now....
the bosch motors are 700w and software restricted to 250w tho under the 15mph limit they can use all of the 700w of power climbing hills.
with no limit i can hit over 30mph tho in both cases it more than half's the range the power has to come from somewhere
with no limit i can hit over 30mph tho in both cases it more than half's the range the power has to come from somewhere
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