Search found 95 matches

by BRUCEROE
Wed Jul 13, 2011 3:08 pm
Forum: New Project Suggestions
Topic: 36-1 Electronic Trigger Wheel Emulation
Replies: 15
Views: 27272

That is right, thanks for the correction. The EDIS is wired for a 36-1 wheel, sorry about the mistypes. Bruce Roe
by BRUCEROE
Wed Jul 06, 2011 2:40 pm
Forum: New Project Suggestions
Topic: 36-1 Electronic Trigger Wheel Emulation
Replies: 15
Views: 27272

MJ Input

The MJ expects a differential input; you might try transformer coupling. I suspect the amplitude needs to increase for higher rpm operation. Magnetic coupling is common, because it doesn't suffer so much from dirt. good luck, Bruce Roe
by BRUCEROE
Tue Jul 05, 2011 11:19 pm
Forum: New Project Suggestions
Topic: 36-1 Electronic Trigger Wheel Emulation
Replies: 15
Views: 27272

The amplitude of the signal will vary greatly with rpm. These things pretty much focus on the crossing points. Get a scope & check it out. The MJ is hard wired to receive a 36-1 signal, what is your approach? Bruce Roe
by BRUCEROE
Sat Oct 30, 2010 4:59 am
Forum: Assembly
Topic: MAP bulkhead fitting
Replies: 6
Views: 11453

McMaster-Carr is Chicago area based. I have great respect for them. I'm close by, orders shipped cheapest way arrive in one day. What you need is someone USA side to order them, then privately forward the stuff. good luck, Bruce Roe
by BRUCEROE
Thu Oct 28, 2010 2:36 am
Forum: New Project Suggestions
Topic: knob in car
Replies: 9
Views: 12069

If you go to POWERED BY MJLJ GALLERY, to KOHLER 20 HP ODD FIRE TWIN 13 May 2010, you can see a picture of such a knob. Also a PHOTOBUCKET link to more pictures. It drives the AUX input. Bruce Roe
by BRUCEROE
Tue Oct 26, 2010 11:17 pm
Forum: Q&A
Topic: rotary megajolt
Replies: 27
Views: 28736

If I read right, a spark plug requires one spark for every crank revolution (360 degrees). If so you can just use a 36-1 tooth wheel on the crank, which fires each plug once a revolution. But it won't be waste fire anymore. The other end of the coil output will need to be grounded to complete the pl...
by BRUCEROE
Tue Oct 26, 2010 4:55 am
Forum: Q&A
Topic: rotary megajolt
Replies: 27
Views: 28736

You could do it with one trigger wheel driving 2 VR pickups and 2 ignition systems. Since you couldn't locate the pickups only 4 degrees apart, space them 120 + 4 = 124 degrees apart. You will also need to change the coil driver wiring to get back the 120 degrees. I see it as a pair of 6 cylinder ig...
by BRUCEROE
Mon Oct 04, 2010 10:11 pm
Forum: General Discussion
Topic: Build it yourself kit? Wheres it gone?
Replies: 11
Views: 13869

Upgrades

Well since the units are now upgraded and up priced, maybe the software bugs in the logging and other programs ought to get fixed now. I listed a handful earlier this year. Bruce Roe
by BRUCEROE
Wed Sep 08, 2010 4:02 am
Forum: News and Announcements
Topic: Limited quantities of Megajolt Solder-yourself kit
Replies: 5
Views: 10559

These are discounted, how many? Already soldered some here. Bruce Roe
by BRUCEROE
Tue Aug 24, 2010 3:50 pm
Forum: Operation
Topic: Understanding Advance Correction?
Replies: 5
Views: 4604

You can program the AUX input (0 to 5 volts) to shift the entire timing map some number of degrees, can be plus, minus, or both. The amount of shift you program at some 10 different voltages, doesn't have to be linear. Your input circuit can be a temp sensor or a pot, with a circuit to generating th...
by BRUCEROE
Sat Aug 21, 2010 10:56 pm
Forum: Installation
Topic: EDIS 6 New coil type
Replies: 8
Views: 7895

OK. First time you said your firing order was 163254, not 163524. Bruce Roe
by BRUCEROE
Sat Aug 21, 2010 2:51 pm
Forum: Installation
Topic: EDIS 6 New coil type
Replies: 8
Views: 7895

TRACING COIL PACK

Assuming that unit is just coils, no transistor drivers. You can find the pairs of secondary outputs (to each coil) with an ohm meter. They might measure 500 ohms, usually they are directly across from each other. The primary should be 3 coil wires to drivers, and a common 12 volt pin. An ohm meter ...
by BRUCEROE
Sun Aug 15, 2010 1:40 am
Forum: Operation
Topic: Megajolt installed, misfiring (1968 Mini, 1275cc) FIXED
Replies: 7
Views: 8613

As a sanity test, I suggest you remove the plugs and the injector wires (or you have a carb?). Ground the plug wires so that the ign can operate without damage, and disconnect the MJLJ for EDIS limp mode. Spin the engine with the starter and use an inductive pickup timing light to check the position...
by BRUCEROE
Sun Aug 15, 2010 1:23 am
Forum: Installation
Topic: leading edge or trailing edge and VR sensor gap
Replies: 9
Views: 6341

I agree it is the tooth edges that set the timing. I don't think the waveform description is correct, though: "maximum positive on the tooth, most negative in absence of a tooth". That would imply the voltage directly tracks the wheel height. First, note that the voltage goes to a half way point dur...
by BRUCEROE
Sun Aug 08, 2010 7:34 pm
Forum: Q&A
Topic: Suppressor on coil feed?
Replies: 4
Views: 4369

There were caps connected to the harness of my coil packs, from the factory. They are a lot less than 25 micro farad, about 0.24 mf on my bridge. The original mfg thought they were worth the cost, to avoid interference caused marginal operation of systems in the car. I don't want to be tracing bugs ...