FAQ

Bruce Allen This email address is being protected from spambots. You need JavaScript enabled to view it. (of the COALS list) had some good advice about why you should not buy poor tools - have we not all been here, some of us more than once (ie me.... hehehe).…

Read more: Buying Poor Quality Tools Is A Waste Of Money and Time

Calculating Belt Tension

John Culp a member of the SEL had a need to generate power at his home and had a convenient diesel engine and wanted to belt it up to an alternator - he had a few belt slipping problems and too the rescue came the SEL... Thanks to Richard Allen and "Farmer". Date: Mon, 1 Jan 2001 20:54:06 -0800 (PST)…

Read more: Calculating Belt Tension

We've all heard 'em... some of us have made 'em... every engine show has its share of classic comments made by spectators and exhibitors. Sometimes it is the dad trying to look important/knowlegeable explaining how the engine works to his kids, sometimes it is a kid in the crowd sometimes it is an exhibitor who really has no idea but likes the sound of their own voice. This FAQ article is not all that engine related, but these comments are generally pretty humourous and worth a read ;)…

Read more: Classic Comments

Q:

Can I initially start my Gal.  on a buzzcoil type gizmo, and then switch it
over to the Webster once it's running?  If so, how would I do that?
Rick
Hint from "Doc" Schuster..In order to orient the magnets (polarity) of a
Webster, etc. to a recharger. Suspend the mag. on a string, hold it high
above the re-charger, energize the charger and slowly lower the mag.  It
will automatically align.  Now that's a no-brainer, huh????
This email address is being protected from spambots. You need JavaScript enabled to view it.

A:

I wish I knew more about the configuration of a Webster (I'll have to look on Harry's).  If it's possible without harming the magneto, you might be able to isolate the "hot" wire to the ignitor and, using a double throw switch (center to ignitor, one side to magneto and the other side to a low tension coil).

I'll about bet that the Webster holds the points closed all the time except for when it trips.  In that case, be careful to not leave it in the "battery" position too long or the coil will get really hot.

If the Webster will allow (and I think it will), you might be able to rig-up a way to hold the mag in a position where the points are open.  After priming, just remove the 'rig' and give the mag a twist.  Once the engine fires a time or two, you can throw the switch to "mag".

Take care - Elden DuRand
Kentucky, US of A
This email address is being protected from spambots. You need JavaScript enabled to view it. <mailto:This email address is being protected from spambots. You need JavaScript enabled to view it.>
This email address is being protected from spambots. You need JavaScript enabled to view it. <mailto:This email address is being protected from spambots. You need JavaScript enabled to view it.>

A:

Rick,
If your Webster contacts are closed 99.9% of the time that may be the problem. Should be open when in resting position. When the trip mechanism rotates the mag rotor the contacts are closed. As the rotor flips back to the home position the contacts are adjusted to open at just the point at whick maximum current is flowing. Here EMF spikes and you get the spark.

Ignitors are the same way.

Curt Holland
Gastonia, NC

A:

Not according to Doc, Curt.  I can possibly see why.  If they were open,
they would carbon up.  But I must admit, I've wondered the same thing.
There is soooooo much adjustment on that screw, and so little used.

http://community.webshots.com/user/stroberc

A:

NO !  Webster points should not be open when at rest.


Ted Brookover
4801 E. Red Bridge Rd.
Kansas City, Missouri. 64137
USA
816-763-3142
This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.oldengine.org/members/brookover
Ignitor Identification Page
http://www.oldengine.org/members/brookover/ign-id.htm

A:

Hi Ted...so, can I start it on a low-tension coil and switch over to
Webster...for troubleshooting purposes?
TIA
Rick
http://community.webshots.com/user/stroberc

A:

Well color me wrong! That's what I get for thinking in terms of ignitor and applying that to Webster's with ignitors. I apologize for posting incorrect information.
Curt Holland
Gastonia, NC

A:

Use of a coil with a Webster Magneto is a REAL BAD idea.


Ted Brookover
4801 E. Red Bridge Rd.
Kansas City, Missouri. 64137
USA
816-763-3142
This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.oldengine.org/members/brookover
Ignitor Identification Page
http://www.oldengine.org/members/brookover/ign-id.htm

A:

>about demagnetization of the mag. Hopefully the mag experts will speak
>> up and remind us of the risks...

Here is what I was told to do by Ted.

Run a wire from the Ignitor to the middle contact of a knife switch.
Hook the mag to one side and the coil to the other.  This is also how
the Associated manual says to do it.  The Waterloo will also have the
same kind of setup.  This was actually a very common set up, and a lot
of engines came from the factory like this.

One last thing, Ted recommended using a double switch, so that the mag
could be grounded when the coil was active.  I think that is so that you
do not toast the mag.

William J. Pfeiffer Jr.,
Sharon A. Cook,
Freckles the gutless wonderdog &
Sugar the tongued terror

This email address is being protected from spambots. You need JavaScript enabled to view it.
Woodstock, Illinois, USA

A:

>Here is what I was told to do by Ted.
None of that is relevant to a Webster system. Only rotary systems that have
both magneto and battery and coil.

Webster systems simply must be in top shape to work properly, NO ! wear in
the bushings or shafts.


Ted Brookover
4801 E. Red Bridge Rd.
Kansas City, Missouri. 64137
USA
816-763-3142
This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.oldengine.org/members/brookover
Ignitor Identification Page
http://www.oldengine.org/members/brookover/ign-id.htm

A:

I missed the beginning of this thread, and am not sure what it is about, so
I am coming in a little late.

Webster contacts ARE supposed to be closed when the mag is at rest.  In fact
there should be a very slight gap between the push finger on the mag and the
bump arm on the bracket (only a few thousanths.)  There is no reason for
this other than timing on a Webster oscillator, it is a very different story
on a rotary mag, however.

On a rotary mag, the contacts MUST be closed when the engine is not firing.
Then only open when the igniter is tripped and the hammer forces them open
momentarily.  The reason for this is that the output of the mag must be
grounded when the igniter is not actively firing. 

When the mag is rotating, it is building up energy whether it is needed or
not.  If the contacts are open, there is nowhere for the energy to go, so it
ends upp being dissipated in the coils.  This turns into heat which
eventually melts the varnish and causes shorts in the windings.  The action
is much more severe in a high tension mag, except that the failure mechanism
is that the coil will exceed the breakdown voltage of the insulation and arc
over.

Igniters on bettery and coil systems are usually the opposite, the points
are normally open.  Some igniters, like those found on most Associated and
United engines, can be worked either way by simply moving a spring.

As for having a dual ignition engine (mag and battery/coil), you would need
a two pole knife switch.  You would definitely need to ground the mag when
running off the battery.  Further more, you must never connect the
battery/coil to the mag.  You will melt the varnish insulation and
demagnetize the magnet.

bill lopoulos This email address is being protected from spambots. You need JavaScript enabled to view it.

Read more: Can I start on coil then switch to magneto for trouble shooting?

To remove the tar from a buzz coil box you can either melt it out or freeze and chip it out.…

Read more: Clean the tar out of a buzz coil box