12 b
Josh Roux is working on a new CD ignition system computer
specifically for the second gen ignition trigger. That is the one
that looks a bit like a distributor. Found in late 80's RX7's. See
the attached pictures. It will also work on an RX8 engine with dual
triggers.
The computer is called a Duinomite. Same programing language
MMBasic and features but faster and better than the Gizmo Maximite
Color. This computer can probably do whatever a Motec can do. Many of
the program (if not all) Maximite computer programs will run on the
Duinomite such as the Wankel compression tester.
He also has a new engine ignition trigger simulator. Here are movies
of it working at idle and very high RPM.
If you need an ignition contact Josh at:
Josh <
jroux1992@gmail.com
Paul Lamar
We used an M&W Pro 14R from OZ on the Time To Climb engine and ran
into trouble when the battery voltage dropped below 12 volts. We had
to add an extra 18 volts battery. The ignition alone was well over
$1300 as well.
I suspect it was copied from an old design by John Clark. Here is a
pdf of an article John wrote.
Josh plans on using US made MSD Street fire CD systems. Much less
cost.
Paul Lamar
Paul,
I suspect that Mr. Clark is confusing capacitive and inductive
coupling ("Cross-fire is caused by the capacitance between
adjacent spark plug leads.")
I think their HT leads were cross-coupling inductively. And it is
surprising how much inductive coupling is experienced when
running 20KV or more for about 2' when the lines are not shielded
from each other and are only inches apart.
To demonstrate this, notice that the primary winding done (by
hand) is 13 turns, against a secondary of 360 turns. And this is
a very small bobbin transformer.
The effect of the instant field generated and then the immediate
collapse of that field is what give the 800 VDC out of the
secondary (based on the effects of a 60 cycle power supply and
doing the math on the turn ratios this would be a step up
transformer). Because of the rapid field build and collapse the
output voltage is far higher. And this same effect is now
happening between the HT Leads going to the spark plugs.
So, if this would be a problem for anyone using this ignition
system, I believe the problem can be overcome by using shielding
to break the inductive coupling.
Regards,
Steve Thompson
He is a world renown expert on CD systems. Maybe the magazine editors screwed up the
article.
Paul Lamar
Please add your questions or comments at the end of the thread.
Not the beginning.
I am going to enforce that rule. If people don't do that it will not be published.
My ISP changed the rules.
The Rotary Engine free News Letter. 750 subscribers world wide.
Powered by Linux. If you want off the list PLEASE let me know and I will remove you.
ACRE NL web site.
http://www.rotaryeng.net
YouTube Key word "PaulLamar2". Keep clicking
this as Youtube will try to divert you to advertising.
Copyright 1998-2019 All world wide rights reserved.
