Magic Pie 1500W motor : Do I face the risk of radiation ?

A

avantgarden

100 mW
Joined
Feb 22, 2012
Messages
44
Hi All,

I'm the proud owner of a Magic Pie electric motor tuned to 1500W. I paired it with the ecrazy controller.
Both are a dream combination as far as performance and reliability.
I'm still left with the concern that I'm sitting 10" above a 1500w source of radiation.
Do I risk cancer ? Were any measurements taken on the Magic Pie ? Is it radiation certified ? Any data collected about the famous motors from china ?
I tried to find posts in this forum about radiation risks faced by ebikes and couldn't find any....
 
http://www.naturalnews.com/029091_electric_cars_EMFs.html
I think you're more likely to be eaten by a shark at your local swimming pool than to get cancer from an ebike. I'd worry more about melanoma from the sun. That's why I always wear a long sleeve shirt, gloves, and a bucket hat when riding in the sun.
 
avantgarden said:
Hi All,

I'm the proud owner of a Magic Pie electric motor tuned to 1500W. I paired it with the ecrazy controller.
Both are a dream combination as far as performance and reliability.
I'm still left with the concern that I'm sitting 10" above a 1500w source of radiation.
Do I risk cancer ? Were any measurements taken on the Magic Pie ? Is it radiation certified ? Any data collected about the famous motors from china ?
I tried to find posts in this forum about radiation risks faced by ebikes and couldn't find any....
Click to expand...

There is no ionizing radiation from electric motors and very little non-ionizing electromagnetic radiation, so no cancer risk.
Like was said it would be more useful to worry about protecting your skin from the suns radiation.
 
Is the fact that ebike motors produce low radiation related to their DC properties ?
AFAIK the output of the controller is not DC...
Another important factor is the battery. The media is full of warnings to stay away from cell phones when they are being charged. Isn't that 1000 times more important when the battery is 1000 times bigger ?
 
Step one to living a healthier, happier life: stop taking health and happiness advice from the mainstream media :) The stress of worrying about EM fields is doing far more damage to your health than would sleeping with 10 charging cell phones under your pillow.

For what it's worth, much of that "1500W of radiation" is in the infrared spectrum (i.e. heat). If you're truly worried about "radiation", you might want to spend some time actually understanding the EM spectrum and the relationship between EM wavelengths and their effects. Brushless DC motors have been around since the 1960s and no one has presented any scientific evidence for harmful effects from the motor's EM fields. As far as their use in ebikes is concerned, the only real increased health risk is the increased average speed in a crash.

It sure would be nice if the average person could do math. Then perhaps people would worry less about the things that have a 1E-9 probability of knocking a year off their life and more about the poor diet and lack of exercise that are statistically guaranteed to be taking years off both length and quality of life.
 
superdave said:
Step one to living a healthier, happier life: stop taking health and happiness advice from the mainstream media :) The stress of worrying about EM fields is doing far more damage to your health than would sleeping with 10 charging cell phones under your pillow.

For what it's worth, much of that "1500W of radiation" is in the infrared spectrum (i.e. heat). If you're truly worried about "radiation", you might want to spend some time actually understanding the EM spectrum and the relationship between EM wavelengths and their effects. Brushless DC motors have been around since the 1960s and no one has presented any scientific evidence for harmful effects from the motor's EM fields. As far as their use in ebikes is concerned, the only real increased health risk is the increased average speed in a crash.

It sure would be nice if the average person could do math. Then perhaps people would worry less about the things that have a 1E-9 probability of knocking a year off their life and more about the poor diet and lack of exercise that are statistically guaranteed to be taking years off both length and quality of life.
Click to expand...
The damage caused by long usage of cellular phones is a known fact. Especially among kids. There is also an issue with vacuum cleaners :
http://www.name-n-shame.co.uk/airborne_radiation.php
I admit that wasn't able to find any article that would claim the same thing on e bike motors and I was wondering if it's related to the fact that they are DC motors.
 
Take the motor off. Start pedaling. Keep pedaling till you reach the end of the last road in Alaska.

Now you are safe from EMF radiation. After a while, you can stop worrying about everything else as you starve or get eaten by a griz.

Or take some advice from La Femme Nikita. " I never worry about the little things".

Motor emf and cellphone radiation are different. I don't talk all day on a cellphone, and wonder if it might be harmfull to do it that much. I don't ride with my ear pressed to a hubmotor either. I'd think your body is far enough away for it to be harmless with the bike.

I remember them saying the 1960's model tv's would kill us if we watched from 2 feet away. We still watched the bikini surf movies and space launches from real close. Still here, but have enough brain damage from even more obvious hazards to not be able to say if the tv harmed me as a child.
 
I would appreciate informative answers rather than answers which assume I'm a 90 year old granny ...
Cigarets were not considered a risk a few decades ago and so were transformers installed in front of your window.
Please enlighten me with explanations and scientific facts rather then teaching how be cool 8)
 
I then suggest a kinder gentler fourm, like V is for voltage.

Seriously this time. No risk worth worrying about. None.

Lots of risks with ebikes, but the radiation is not one of them. What little there is, dissipates exponentially with every inch.
 
Controllers emit the emr, not the motors. Most of the EMF in motor is converted to motion or heat.

Compared to the continual daily bombardment of broadcasters, telecom MW, solar and RF from truckers & taxicabs, the typical controller emr is minuscule.


Activity on any two wheeler is a health risk many orders of magnitude compared to EMR, unless you run a microwave oven with the door open.
 
OK. I Got it.
So the reason my balls glow in florescent green is probably due to what they put in these colorful cereals :)
 
wesnewell said:
http://www.naturalnews.com/029091_electric_cars_EMFs.html
I think you're more likely to be eaten by a shark at your local swimming pool than to get cancer from an ebike. I'd worry more about melanoma from the sun. That's why I always wear a long sleeve shirt, gloves, and a bucket hat when riding in the sun.
Click to expand...


There's also evidence that says if you don't get enough sun, you are susceptible to cancer from lack of vitamin D.

If you spend 5 hours a day in the sun, then it's probably good to cover up. But less than an hour I think is healthy for you. As long as you aren't getting burned each time.
 
Depends on your skin. I got relatives that have orange hair and albino pink skin. They can burn in 10 min. I went shirtless at work for 20 years. I oughta have cancer but dont.

Been mounting controllers under my seat. But I don't have the ring of fire yet.

Maybe I should try that open microwave trick. Might pep me up. Maybe combine it with a vended food diet. (obscure movie reference, anybody know it?)
 
Honestly, A women blowdrying her hair will expose her to much more EMF's than you riding an electric bike.

If that doesn't make you worry less, please order something like this http://www.amazon.com/Sonic-Technol...8&qid=1347221492&sr=8-4&keywords=emf+detector , it will cheaply tell you how much EMF something produces. I had one at one point and tested everything in my house pretty much...and nothing was at a level that would bother me. I moved my alarm clock further from my bed, and don't leave any electronics running too close to me while I'm sleeping, but thats about the only changes I made.

EMF's can definitely disrupt your body if they are strong enough and your exposed often enough....but the distance of the motor/ controller to the body and also the amount of time actually using an ebike just wouldn't make it a significant source.
 
It's also a matter of altitude.
I remember the good old days I spent in the US living in New Mexico (Hector Salamanca : "Ding Ding Ding !!!) ...
Albuquerque has a combination of high altitude (thin layer of atmosphere filtering the sun) + Turbulent air (clear of dust = again less filters) + eternal sun.
This combination has 3 outcomes :
1. One gets sun burn very fast.
2. New mexico has the most beautiful sunsets in the world.
http://www.trekearth.com/gallery/North_America/United_States/West/New_Mexico/Gallup/photo605639.htm
3. Visibility in new mexico is almost endless. I got my pilot license in Albuquerque and I remember that once you get airborne you see tens of miles ahead.
 
Someone up higher dropped the clue, then it got lost.

Radiation of all kinds isn't the issue. It's ionizing radiation that matters. Why not do some measurement so we aren't all sitting around guessing? That'd be the scientific thing to do...
http://en.wikipedia.org/wiki/Radiation_protection

I'm thinking airline pilots would be getting a lot more than us. Radiation that is. :mrgreen:

Then genetics plays a factor. Want to know if you can smoke until you're ninety? Get your genes mapped. http://www.foundationmedicine.com/
 
The media wants very badly to convince people that they're all going to die from non-ionizing radiation (i.e. EM fields). It's this type of radiation that has the OP concerned. What the OP needs to understand is the huge difference between the DC EM fields associated with an e-bike motor, ELF EM fields associated with AC power transmission, and the microwave EM fields associated with cell phones.

Even if you accept the (inconclusive) evidence linking microwave radiation with health risks, it's completely irrelevant to e-bike motors (unless you have some very interesting controller that's doing multi-gigahertz PWM). Similarly, even if you accept the research showing a causal link between ELF EM fields (which even the WHO has dismissed as flawed), it has no relevance to the EM associated with DC motors. Direct Current (DC) flows one direction. It doesn't alternate (frequency = 0 Hz), so none of the "radiation is killing you" media hype is in any way applicable. That's why I suggest that people who are intent on worrying about risks that are statistically insignificant compared to the real risks they face daily should at least take the time to get educated on the science behind what they're loosing sleep over.
 
Whenever I ride my ebike, I feel like Superman. That's all I need to know.

:lol:
 
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