Ranger coil options?

[joecb]

Yes, just round “blobs” of solder on those coils.  Pre tinned Spark Plug wire just attaches by soldering to the “blob” . Use a good hot soldering iron, do it quickly to minimize the amount of heat transmitted onto the coil.  ie, an iron with a tiny tip intended for electronic work will not do the job !

Joe B

PS,,, “blob” is a technical term for a highly engineered glob of solder.

[jeff-register]

You will get a resistance from the secondary winding by putting both secondary seconary terminals on the meter leads. Any length of wire has two ends.  Both ends of the secondary are the high voltage terminals. There also have more winds than the single out put coils & give a much higher voltage output. They also cost less as Tubs has stated. The dual put put coils “see” a ground when the first spark plug with the least resistance arcs to ground via spark  plug & the second plug fires because the coil still has enough energy to fire it on a 2 cylinder model. Great energy for one cylinder motor.

[billw]

An update: I installed the new, dual cylinder military Bendix coil. I think I did a pretty good job of square-cutting the lamination, considering I did it all with hand tools. The shoe laminations fit nice and tightly against the coil. I still have just a VERY weak spark. It won’t even jump an eighth-inch. It only will jump an open-air spark plug gap. I replaced the condenser, even though the old one tested fine. I also replaced the plug wire itself.  I was able to solder to the lugs okay. The points have been cleaned and checked, both open and closed, numerous times now. I even tried another flywheel from a Pal. I am at a loss. It is as if the new coil doesn’t work, either. Yes, one secondary lug is grounded to the armature plate. The new coil has 11K secondary resistance. Seems high; but other ones I have, of the same type, test the same. This is very humbling. I wish I knew how to test this coil on my Stevens, but I have no specs.

Long live American manufacturing!

[Tubs]

Try this test. Gap the plug at .025
Squirt some gas into the cylinder.
Pull the motor over 5 or 6 times
to get a good fuel – air ratio.
Put the plug in.
Mag lever pointing to around 4 O’clock.
See if the motor starts in 2 or 3 pulls.
If it does this magneto design is
putting out all the spark it can but
its adequate for your motor to run.
Tubs
.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[crosbyman]

with higher RPMS  the  spark  may  get more powerful to sustain operation.

 

did you check the condenser with a high voltage  test for internal leakage       or just a VOM for shorts and capacity lick ??

Joining AOMCI has priviledges 🙂

[billw]

Tubs wrote:

Try this test. Gap the plug at .025
Squirt some gas into the cylinder.
Pull the motor over 5 or 6 times
to get a good fuel – air ratio.
Put the plug in.
Mag lever pointing to around 4 O’clock.
See if the motor starts in 2 or 3 pulls.
If it does this magneto design is
putting out all the spark it can but
its adequate for your motor to run.
Tubs
.

Thanks, Tubs. I have been doing this once in awhile, already. First with a .025″ gap, then even smaller. The best I can get is an occasional pop.

Long live American manufacturing!

[billw]

crosbyman wrote:

with higher RPMS  the  spark  may  get more powerful to sustain operation.

 

did you check the condenser with a high voltage  test for internal leakage       or just a VOM for shorts and capacity lick ??

I have a Stevens Magneto analyzer, which tests condensers for high voltage leakage, and capacity. Both the original and the new one test good.

Long live American manufacturing!

[billw]

You know, the one thing I don’t actually know for sure, is the point gap SPEC. I have tried it at both .020″ and .018″. The funny thing about this mag is that the points are not closed very long, at all. They are open, most of the revolution. This is by design. Just seems weird. I know it works on Briggs and Tecumseh, too, though; so the engineers knew what they were doing, I guess. But because of this, I can see where point gap would be extra-important.

Long live American manufacturing!

[Tom]

Bill,  Any chance the spark is jumping to the plate instead of following the high tension lead?  Is there insulation between the terminal that’s not grounded and the mag plate?

Bring it to Framingham…

T

[crosbyman]

my understandings is that  the openning  of the gap  is what gets everything going……  the gap itself doesn’t  do much  as long as it  opens at the proper time  relative to  the position of the pistons (TDC).

see article

Microsoft Word – Articles-Mohat Part 3 SB review 6-4-18FINAL.doc (wrcoutboards.org)

Joining AOMCI has priviledges 🙂

[Author]

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