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Jeff Wisnia
 
Posts: n/a
Default A Non-friction bicycle lights generator (dynamo)

Joshua Putnam wrote:

In article ,
says...


This is not a commercial newsgroup. Nor is it a bicycle newsgroup,
where they are likely to tell you that they would prefer LED lights as I
would and do.



Actually, they told him it wasn't a commercial newsgroup, and pointed
out his disingenuous choice of words -- lack of *friction* does not
mean lack of *resistance*, just because the power loss is transmitted
magnetically.


I take it that "they" was a bicycle newsgroup he also posted that
message to, right Joshua?

And while I'm sure I'll be expressing a minority view, (Maybe even a
minority of one.) I did find that link rather interesting. I've seen the
TV ads for the "shakemup" flashlights ad nauseum, but this was my first
exposure to the same sort of single pole PM generator being used elsewhere.

The "moving magnet" pictured in that ad looks very much the same shape
and size aa a high energy magnet I grabbed yesterday to find the wood
behind drywall in a basement room via locating the drywall screw head
locations. My stud finder was getting very confused trying to find the
strapping or whatever else had been attached to a foundation wall, and I
was coming up with too many "dry holes" while trying to screw some
conduit clamps in place.

There are probably a lot of DIY folks on this newsgroup who play home
bike mechanic for their family's bicycles, so the subject wasn't that
far removed from this group's theme.

And yes, several of the claims could have used the adjective "virtually"
ahead of them, like that "Virtually pain free" one I keep hearing in
those TV ads for somebody's diabetes blood testing meter.

But, that whole website has a DIY look about it, and the guy who wrote
the copy probably didn't have a doctorate in physics, and was just
stating his impressions of the words he heard the developers use.

Just my .02, and I hope that my not being offended by that post doesn't
get me labeled a SPAM lover.

If I had a mind to try and promote my company's products on
non-commercial newsgroups, I'd probably be a little more subtle, like
having a shil post a question like, "Does anyone know where I can buy
one of those bicycle flasher lights which uses a magnet attached to the
wheel?" and then have a different person post just the company's URL as
a reply. G

Just my .02,

Jeff (Ducking.)

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."