Install them like this...
After we settle this we'll move on to what kind of oil to use in a doctor's coupe.
Well the point is it doesn't matter until you put the wire in there
But with the wire installed you have to get it right!
BTW you always use anointing oil in the preachers coupe.
I do it like the first picture. Makes it easier to get a grip on them. Doing it like the second picture gets the knurled area too close to the flat terminal of the spark plug wire. I can't get as good a grip on it like that.
So Mattthew, does that mean Caster Oil should be used in a Doctor's Coup?
Wow! I love it!
I think we should come up with a list for: pastors, doctors, farmers, bankers, etc.
OK, mine are set up like photo one for the number one and three cylinders, and like photo two for cylinders two and four.
I think when the second ad picture was being taken, the photographer, not being familiar with spark plugs, did not notice that the nut was on upside down and it was not caught until the ad was going to print. When it was discovered by the ad executives at Champion, and they were contemplating on retaking the picture, at considerable cost in missing the deadline for the ad to run, they weighed the pros and cons and decided the public did not know the difference and therefore probably would not notice and if they did notice, would not care. A good decision. Jim Patrick
So Bill, are you afraid to make a commitment?
Sorry, I don't know what's gotten into me today....
And Snake Oil in a Politician's Coupe.
I don't have a clue...I've always done knurled side up!
Here I go again,...."nit-picking" again. But my depot hack spark plugs have little brass wing nuts that I'm sure are not original, but I particularly like them whether they're "original" or not! I like to make sure the plug wires are tight, and I never did think that you can get the little round brass knurled nuts tight enough by hand, and the only alternative (pliers) eventually screws up the knurling anyway! So I'm gonna' stick to the little brass wing nuts,.....so THERE! Ha,ha,....harold
I believe the follow-on topic should be "Correct Oil For a Doctor's Coupe Water Pump Distributor"
Linseed oil for a Soldier's Coupe ?
Bob - Anybody knows that the proper oil for a doctor's coupe is cod liver oil!
I think caster oil is what you use in the front axle. :o)
I have found that if I rotate the terminal on the wire a little CCW just before doing the final tightening, I can turn it CW the last little bit with the nut. Kinda acts as a 'wrench' to help tighten the thumb nut. Same when loosening. While I can't loosen the nut by hand, if I use the sparkplug wire as a 'wrench' and turn the terminal and nut together, it will loosen up and I can finish removing it by hand.
Good tip Hal; I'll bet that's one that Ted Ashmann missed in his two volumes of "Tinker'n Tips",....thanks,.....harold
Great minds through the ages think alike, here is a quote from the Ford Service Bulletin dated April, 1922:
"It is not necessary to use pliers on the knurl nut to make a tight connection; the nut can be screwed down with the fingers and then the cable moved with the nut slightly and it will be sufficiently tight to carry the current."
Peanut or Canola oil in farmers trucks?
These are better, you can check if tight while engine is running without using any tools!!
Olive Oyl for Popeye's motorcycle.
Anyone got a picture of it?
Sorry folks, I use K-Y jelly for lubing the zerks on my doctor's Coupe and castor oil (I get it from the furniture movers) in the engine. Why do they call it "Canola" oil? because nobody would buy it if you called it "Rape oil", since it comes from rape seed.
OK Steve, terminal solder side up ??..... or down ????
I prefer knurled side up.
Those look like bronze to me, Kerry. YOU check 'em with it running. I'll watch.
Just stumbled upon this, kind of interesting...
Those are 8-32 thread for the 1923 & later Champion X with the crimped brass top. They won't fit the earlier plugs, which have a 5-40 thread.
Simple, just get one of those reducing drills and retap........
It would be nice to have a drill that would make bigger holes smaller.
Nuts: just solder the spark plug wire to the sparkplug. No more misfires. :-)
Just set the drill in reverse Steve ... just like playing movies backwards !!
I have always put the knurled side up as per the Ford Service book, and do as Hal does, use the plug wire terminal as a means to tightening that last little bit. It works well. I have only owned Non Brass T's the knurled nut may have been attached differently on the earlier T's. Regards, John
obstetricians should use baby oil.
RJ&L Vintage Wiring has wire thumb nuts terminals battery cable etc.
All you Italian T owners out there should consider using olive oil. Of course, there is the problem of deciding who is entitled to use extra virgin olive oil.
Surprisingly, RJ&L has the 5-40 nuts, and they're only $1 each. Even if the shipping doubles the price, it's not outrageous. But I see the diameter is .440". I happen to have some brass stock, so I'm going to copy one I have that's .500". That will be a machine shop class project.
I had thought by now that some one would have looked at an early champion spark plug knurled nut under a
magnifying glass! When I asked my friend a tool and die maker to make some he asked me the same question and I said no, he said you will learn something. I ask the same question here, you will learn something. All the re-pops can be spotted a mile away and if you think you are going to just make them think again.
Here is one example of some early ones I made.
If you have a show car, or are just a stickler for authenticity, you can get exact reproductions from RV Anderson. They're pricey, but my experience has been that all his stuff is scrupulously authentic and top quality.
Mike, I expect most of us haven't seen an original and wouldn't recognize it if we did. How about a picture?
Looks like Richard posted the picture while I was typing. Those appear to be something I could make.
Although 5-40 are hard to find, 4-40 are available. I bought some4-40 thumbnuts, re-drilled them with a #38 or 93 drill and threaded them with a 5-40 tap.
It is close enough except for the purists.
: ^ )