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Subject: Re: [FlyRotary] Re: Crank trigger
Date: Tue, 31 Jul 2007 18:59:04 -0400
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Jerry,
You really need to fire both plugs! You don't need a timing split to=20
get best power. A timing split will help fuel efficiency.
Bill Jepson


-----Original Message-----
From: Jerry Hey <jerryhey@earthlink.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, 31 Jul 2007 10:30 am
Subject: [FlyRotary] Re: Crank trigger


Thanks Lynn,=A0 I think I will do it this way.=A0 Re the single rotor, is=20
it possible to use two coils (not at the same time of course)=A0 each one=20
firing both plugs, to provide redundancy?=A0 The switch on the panel=20
would be one or the other or off.=A0 Jerry


=A0 =A0


On Jul 29, 2007, at 9:00 PM, Lehanover@aol.com wrote:


Here is the picture of the crank trigger for rotaries. The degree wheel=20
on the front of this makes timing a real treat. The wheel can be=20
oriented so that the stock pointer is pointing at 26 degrees (or=20
whatever you want the timing to be) when the reluctor is in front of=20
the pickup for number one housing. This pickup would be on the plug=20
side of the engine. The pickup for the number two housing will be=20
mounted on the exhaust side.

=A0

Both leading and trailing plugs will fire at the same time. No=20
distribution of the trailing plugs is required.

=A0

No split between leading and trailing is required.

=A0

You can use two coils per housing as drawn, or use a double ended coil=20
from a motor cycle. If using MSDs,

use one of their coils.

=A0

Timing accuracy is astounding. A timing light looks like a flash light=20
shining on a stopped engine.

=A0

Chrysler amplifiers are about $20.00 each. Two required. Chrysler=20
(Dodge Plymouth and others) pickups (from the distributor) are about=20
$5.00 each. Two required=A0Easy hookup. Short wires, Mount the coils=20
beside the plugs. Amplifiers (or MSDs) can be mounted remotely. Wiring=20
diagrams in a Motors Manual at the library.

=A0

Lynn E. Hanover=A0


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