Subject: M&W ignitions tech support or the lack there of.
From: paul lamar
Date: 8/18/2017, 9:28 PM
To: A10-Me-Earthlink


 Paul,

 What fires the ignition?

 I looked at the M&W site and there are T1, t2, l1,and L2.

 Joe Berki

 Those are the Leading and Trailing coils.

 Four total. One for each plug.

 Simple.


 Joe,

 This is the conversation I had with M&W sales. I was unable to find
 out how to trigger the system with or with out a computer.
 Apparently I was talking to a non engineer.

 I think it will work but you will have to buy one and experiment
 with it to find out. A pulse is a pulse whether it comes from a
 computer or a conditioned CAS.

 They make some good stuff in Oz but the documentation sucks.

 Maybe somebody else on here that speaks Oz can try :-)

 I give up.

 ----------------------- Last message first
 format.--------------------------


 M&W Ignitions <sales@mwignitions.com

 Wayne, are you an engineer or electronic technician or are you just
 sales? Do you know what a CAS is? If not show this message to the
 engineer.

 Suppose I fired L1 and T1 with the same leading edge  pulse from the
 stock CAS (crank angel sensor) at 22 degrees BTDC and used another
 CAS  180 degrees out to fire L2 and T2 would that work with the
 rotary ignition _Pro-14R
 <http://www.mwignitions.com/pdf/Rotary%20S3%20instructions.pdf ?_

 What would I have to connect pin 5 to.

 Paul

 Please explain exactly what you need.


 Wayne

 so we would need 4 for a rotary. One for each coil. That does not
 sound like the lowest cost solution.

 Suppose I fired L1 and T1 with the same leading edge  pulse from the
 stock CAS (crank angel sensor) at 22 degrees BTDC and used another
 CAS  180 degrees out to fire L2 and T2 would that work with the
 rotary ignition _Pro-14R
 <http://www.mwignitions.com/pdf/Rotary%20S3%20instructions.pdf ?_

 What would I have to connect pin 5 to.

 Paul Lamar

 On 08/17/2017 01:01 PM, M&W Ignitions wrote:

 Paul

 Our single channel Pro-10R already has a reluctor interface built in
 and we will be releasing an adjustable rev-limiter version of it
 shortly.

 Regards

 Wayne



 do you have a single channel system?

 we find that a fixed 22 degrees BTDC works fine for us.

 No variable advance.

 We use a LM1815 conditioning IC The pdf is attached.

 It works with a CAS set to 22 degrees BTDC


 Paul Lamar


 On 08/16/2017 08:55 PM, M&W Ignitions wrote:

 Paul

 The multi channel systems are designed fro triggering from an ECU
 not crank trigger.


 Wayne


 how do you get your ignition to work with a carburetor? Is is
 sufficient to trigger pin 5 with a crank angles sensor?

 If so what do I do with pins 25, 27, 28 and 29?

 Paul


 On 08/16/2017 07:43 PM, M&W Ignitions wrote:

 Sorry, we do not understand your question.

 Wayne

 --------------------------------------------------------------------


 Paul Lamar


 Paul,

 I am using the single channel system, PRO-10R, with the reluctor
 trigger input and a waste spark coil on the single rotor. Connected
 an RX8 CAS and it worked just fine. Had it up to 7000 RPM yesterday.
 I had to order it direct from M&W, because no US dealer does stock
 it.

 FWIW


 Richard Sohn


 Are you firing just one plug Richard or does that waste spark coil
 fire 2 plugs? What did the single channel system  cost?

 Paul Lamar


 Paul,

 I am firing both plugs from the same coil. I paid about $500.

 Richard Sohn


 I assume that is a wasted spark type coil. Is that true. Do you have
 a picture of it? That is a one rotor of course.

 This picture shows two coils.

 Paul Lamar


Paul,

in the picture is the initial system I used, until about two years ago,
when I got a Street Fire CDI and used the waste spark coil for the first
time. I could not use this CDI in the airplane because the starter power
would not turn the engine fast enough to overcome the minimum trigger
speed the Street Fire unit required. Than I talked to M&W after you
mentioned it a few weeks ago, and Wayne told me that his system does not
have that limitation. The M&W tech info states that the unit is not
sensitive to what kind of coil one wants to use.

I believe the coil I am using now is coming from some Saturn car with a
4Cyl engine. When I was looking for newer  coils on the internet I could
not believe what is available. The coil I am using now I had for about
15years. In the picture is a brand new replacement I purchased recently.

I will have more pictures soon from the actual installation.

 Richard Sohn


I think that is a wasted spark coil. Two sparks one activation pulse.
Normally with a conventional electric system it would have a dwell time.
When using it with a CD system there is no dwell time. It fires when
you tell it to fire.

Richard, do you have the M&W "installation guide" can you scan it and send it to me?

Paul Lamar

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