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Discussion Starter · #1 ·
any one else use these damn things,I thought it wold stop my main shaft from seeping man was I wrong,best part was I spun the nut on and grabed my pos impact to tighten it and it yanked the threads right out of it back to a standard nut for me.
 

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I ran one on my old shovel for a few years.If your high gear bushing isn't worn too bad it will do a pretty good job of sealing up.You are right about the impact though,hand tighten only.

Glenn
 

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Ya know, I used to use the super nut. I have a buddy that is a Harley mechanic and he hates them, and says they only address the symptom, not the cause.

So, I pulled my trans and tore it down, it only needed a few things, and I carefully fitted the inner bushing of the countershaft, and carefully set the end play.

After I freshened it up, it has been hangin' in there for years.

I stripped one once too. There is not much meat there!

The moral of the story is that it is a bandaid for a bigger problem!

Stock nut for me too!
 

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Discussion Starter · #5 ·
yeah it will be hand tight for me when I can come up with a stock one I have learned my lesson on this one
 

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Dang. I am straight up highlighting my own ignorance, but what is a supernut? One with the plastic lock in the thread barrel? A set of two thin nuts? I cant figure this one out.
 

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Dang. I am straight up highlighting my own ignorance, but what is a supernut? One with the plastic lock in the thread barrel? A set of two thin nuts? I cant figure this one out.
It's the nut that holds the trans sprocket on. It has a seal built into it that goes around the mainshaft. It is a band-aid for the leak between the mainshaft and 4th gear bushing.
 

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There was one on my 79FLH when I got it. During my tear down I noticed that it had worn a grove in the back of the inner primary. It is thicker than a stock one. I replaced it with the stock nut and addressed the leak the proper way.
 

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The problem is that there is no positive seal too prevent oil leaking past the sprocket spacer in the main seal. Oil gets past the inside of the spacer and is free to leak out the splines where the sprocket mounts on the main drive gear. The super nut only seals one side of the sprocket and thus only one half of the leak. Saddlebagrail (Ray Dugay) who frequents the Shovelhead.us forum is a brilliant machinist and makes a very effective spacer with an "O" ring that cures once and for all this annoying leak.
 

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Thanks for some explanation ya'll.
 

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The problem is that there is no positive seal too prevent oil leaking past the sprocket spacer in the main seal. Oil gets past the inside of the spacer and is free to leak out the splines where the sprocket mounts on the main drive gear. The super nut only seals one side of the sprocket and thus only one half of the leak. Saddlebagrail (Ray Dugay) who frequents the Shovelhead.us forum is a brilliant machinist and makes a very effective spacer with an "O" ring that cures once and for all this annoying leak.
i think the same guy has an instruction vid on youtube.ill post if i can find it.
 

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I am reading it as use a hand ratchet rather than an impact gun
I use an electric impact for motor sprockets and tranny sprockets and have never had a problem even with supernuts. They have enough to tourque it down, but not too much to where it will overtighten and rip out fine threads like on a tranny mainshaft. I wouldn't use and air impact on a bike.

Sixball
 

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Yea, they're thick enough that they rub on aluminum inner primaries sometimes.
And they are a stop gap fix for more serious problems.
But they will slow down your transmission leak.
As far as impact guns go, they're great for taking stuff apart, not so much putting them back together. That's what they make torque wrenches for.
 

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Ha Ha I have a buddy I caught using my torque wrench as a breaker bar. I also keep my good drill bits hidden from him as well; he just refuses to use cutting oil, and believes screwdrivers make great chisels.
 
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