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Jerry,
You really need to fire both plugs! You don't need a timing split to 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, I think I will do it this way. Re the single rotor, is it possible to use two coils (not at the same time of course) each one firing both plugs, to provide redundancy? The switch on the panel would be one or the other or off. Jerry
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 on the front of this makes timing a real treat. The wheel can be oriented so that the stock pointer is pointing at 26 degrees (or whatever you want the timing to be) when the reluctor is in front of the pickup for number one housing. This pickup would be on the plug side of the engine. The pickup for the number two housing will be mounted on the exhaust side.
Both leading and trailing plugs will fire at the same time. No distribution of the trailing plugs is required.
No split between leading and trailing is required.
You can use two coils per housing as drawn, or use a double ended coil from a motor cycle. If using MSDs,
use one of their coils.
Timing accuracy is astounding. A timing light looks like a flash light shining on a stopped engine.
Chrysler amplifiers are about $20.00 each. Two required. Chrysler (Dodge Plymouth and others) pickups (from the distributor) are about $5.00 each. Two required Easy hookup. Short wires, Mount the coils beside the plugs. Amplifiers (or MSDs) can be mounted remotely. Wiring diagrams in a Motors Manual at the library.
Lynn E. Hanover
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