Coil testing - external coils
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- Опубліковано 19 жов 2024
- Coil testing -external coils
Doing these tests was pretty fun and while not very scientific…well, not scientific at all…it was neat to see if there was any difference in what the spark looks like from each coil. From what I saw it looked like the spark from the Mallory 29440 was the weakest and it was a purplish color whereas the others had a blueish/white spark and they seemed stronger.
One thing I didn’t show in this video is what the spark looks like with different spark plugs. I have some racing plugs without a resistor, and I have regular plugs with a resistor. For those of you who race, you might want to keep an eye out for one of my future videos on spark plugs.
Anyway, I was able to find the coil specs for each of these coils so here they are:
Mallory 29440
Inductance 7.5 mH
Maximum Voltage 49,000 volts
Peak Current 66 mA
Primary Resistance .6 ohms
Product Type Coil
Secondary Resistance 11.3K OHMS
Spark duration 3,600 uS
Turns Ratio 94:1
Crane LX-92
Inductance 1.7mH
Max voltage
Peak current 510 mA
Primary resistance .230 ohms
Secondary resistance 910.00k ohms
Spark duration
Turns ratio 60:1
Accel 140003
Inductance
Max voltage 45,000
Peak current
Primary resistance .5 ohms
Secondary resistance 8.6 k ohms
Spark duration
Turns ratio 80:1
MSD 8225
Inductance 3.5 mH
Max voltage 42,000
Peak current 200 mA
Primary resistance .31 ohms
Secondary resistance 9.2k ohms
Spark duration 200 uS
Turns ratio 70:1
Paramount distributer Co. in Michigan has all the stuff you will need to get the machine running . He has a kit to convert the flash tube to LED and does away with the capacitors and stuff . I got one for mine and it works great now nice bright light .
That's exactly what I was hoping for. Thank you so much for letting me know about that. I was hoping there was a way to not only get it working but to update the whole thing.
Any idea what rpm your running at? Thanks for the video, and nice setup....
I'm not sure what RPM I tested these at but I'd guess about 3000 RPM on the tach so about 1500 RPM (dist turns at half speed when installed into the engine). This is the kind of stuff I do in my spare time when I'm sitting in my garage with too much time on my hands. I like to do some rudimentary testing on different things hahahaha
@@BruceCoggins Oh well, it keeps you off the streets.....😅
I really like your homebuilt distributor machine. I think I read an article on your construction of it(?) If I remember correctly you powered it with a windshield wiper motor(?) and had a little trouble figuring out a drive connection to work satisfactorily(?) Anyway, I like it and would one day like to attempt to build something similar👍
I built this distributor machine based on the article you are talking about. It's not my design, I just looked at what that person built and went from there. The motor is just a common blower motor. I added a couple of things to make my unit different and work better for my needs. The hardest part of making something like this is getting started. I highly encourage you to go buy the materials and build you one of these...you will literally spend hours playin...err...um, testing...yeah, that's it...testing stuff ;). If you decide to build one of these and have questions, I will be glad to help you out.
Very nice job. We have similar interests fer sure. Thank you.
Cool video !! .....You deff Need to hook up the Scope. You can clearly See & Measure the coils Primary & Sparkplug Voltage & current Duration & calculate the total spark millijoule energy Delivered to the Plugs......All coils have a design Inductance spec.....Having a LCR meter is very helpful to Measure the coils Inductance.....There's a Lot of Complex electrical energy Transfer design involved in achieving the most energy to the Plugs than it first appears.......
Yes, I definitely need to get that scope hooked up. I'm sure there is a lot more it can tell us. As you know, over the years we've see certain parts in different brands and that look identical but there is always one manufacturer who says theirs is the best or puts out the most power but who really knows without actually doing some side by side tests.
Thank you for your input.
There seems to be a crossfire problem going on with your distributor cap.
The crane coil misfired on the plug, second to left.
Good eye...I didn't catch that. I'm going to check that out next time I get in the garage and see if I can duplicate it. I want to make sure that wasn't a frame rate issue...I don't think it was in this case...but I want to see if I can figure out what is going on.
A while ago I played around with a combination of CDI and inductive ignition, CDI to initiate the spark and inductive to maintain it, with air blowing across the gap. A big difference when I turn the inductive portion on and off. 40 millijoule CDI and 300 millijoule inductive. ua-cam.com/video/5FcD1IAUgNw/v-deo.html
Wow, I just watched your video...very cool to see that huge spark and I like the idea of blowing air across the gap. I subscribed and will be checking out the rest of your videos.