Subject: RE: Generator replacement
Author: Hunter Jones
Date: Mar 8, 2001, 9:37 PM
Post ID: 1705788432
Hi Brian,
They run the same speed. The difference you see in the gears is because
both the drive gear on the cam and the driven gear on the dist are unique
to the particular engine. The angle (pitch) at which the teeth are cut
matters only in that both gears (the drive and the driven) are cut to work
together. If you count the teeth you will see that the cam and dist have
the same number (a 1 to 1 ratio) of teeth. BUT the two different series of
engines use different gears.The Eldo set will have a certain number of
teeth and the later set may have more or less. It does not matter how many
teeth there are (12 or 12 dozen), only that the same number of teeth are on
both gears in the set. They must be used with the proper mate, ie: you
can't plop a dual point dist onto an Eldo. If you could I would have done
it long ago. But the idea of using the original Eldo gear on a dual point
dist for a stock Eldo engine might be fun to try.
Take the dist cap off of the bike and watch as you turn the engine. Turn
the engine twice and the dist will make one revolution. The single points
will open twice. The dual points will open once each. Same end result
except that the single point setup needs the cap and rotor of the dist to
direct the spark to the correct cylinder while the dual points simply fire
a coil that is dedicated to 1 cylinder. This is better from the standpoint
that each coil has longer to saturate between firings and (this is also a
curse) each cylinder can be timed independently.
I must say I am fascinated by you hop up on a loopframe and I certainly
hope you will keep us all up to date on how it is going.
I will gladly help any way I can. :-)
Hunter