[Vwdiesel] Degausing for beginners --( a magnetic idea )/Permanent Magnets

[McCanless, James]

I believe all of the gear reduction starters are permanent magnet
starters. They have been in production for a while. I know my '90
Aerostar had one in it.

Those that remember taking a hammer or similar device and striking the
starter to retract the starter drive. You do NOT want to do that to a
PMGR starter. You can easily, permanently(pun intended), damage the
magnets. 

Pros: It is not uncommon to see a 60% reduction in starter weight going
from a positive engagement to a PMGR, they physically are much smaller
and the gear reduction turns an engine easier.

Cons: Initial Cost. Go ahead and spring for the lifetime warranty. I
have replaced the one in my daughters Ranger twice. First time $140US.
Second time free.

Troy

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]
On Behalf Of paulr
Sent: Wednesday, September 15, 2004 10:43 PM
To: vwdiesel at vwfans.com
Subject: Re: [Vwdiesel] Degausing for beginners --( a magnetic idea )


Hagar,

If you're looking for some *really* powerful magnets,
look no further than an old disk drive. Disassemble
the drive. Take the head positioner magnets out -- ONE
AT A TIME. They're shaped something like brake pads (!)
Keep them well separated.

Place each magnet on a smooth table top, far apart.
*Slowly* push one of the magnets toward the other.

At some point, the magnets will begin to move slowly on
their own. Sit back and wait. The magnets will accelerate suddenly.
They'll collide hard enough to shatter.

When I tried it, I was left with shards, and chunks.
Almost impossible to separate the pieces.  Magnets from
the latest, fastest disk drives are even more powerful.

IIRC, GM published a research paper on magnet materials
in them '80's. They were designing permanent magnet starters. Don't know
they ever saw production.  Might be even more fun.

Time for me to get back on topic.  Enjoy!

Paul

2000 Golf TDI -- ready for some VAG-COM hacking!

/////////////////////////////////////////

H.Hagar wrote:
> James Hansen and all ---- like I said experiment.   Magnetize and
degauss a screwdriver
> a few times  --- it works.
> 
> Remember these coils are designed to work with an Iron core---- so
current will be higher with only
> air.  ----- NO problemo   use a pushbutton switch.  And keep duty
cycle low.
> 
> If the screwdriver flies out of your hand ?  you got a class A 1 
> degausser .  If it keeps going and dang the big window next door ?  
> You have a magnetic Cannon.
> 
> So your daughter say's that you spend to much time on the Rabbit --and
not enough
> on the grand kids ?.      Bring out a big pile of strong magnets and a
pound of iron filings.
> And some scout compasses.
> No kids I ever saw no matter what age ---could resist those magnets.
And I am one of
> them.
> 
> By the way the magnetic powder I use for Magnafluxing is sort of
brownish  and it
> glows under a black light.    I mix it in kerosene and brush it on.
> 
> So where did I get my really strong magnets  ?  yepper  the dumpster.
And let me tell you
> guys when you get hold of a REALLY stong one ?   Hang on to your keys.
> 
> Military Magnetrons from Radar sets are the tops.  If you got a 
> pacemaker  --forget it.
> 
> Talk to those kids  and may the force be with you.
> 
> Hagar.     (the experimenter)
> 
> PS :  I still have not seen a lonely Northpole one. 
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com http://www.audifans.com/mailman/listinfo/vwdiesel
> 

-- 
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Paul Reich                Electrical Engineer

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