Exposed threads on countershaft

[Mofosheee]

Hello Forum

Please refer to the attached photo of my torqued counter shaft sprocket nut.
Is it typical not to see exposed threads when the counter shaft sprocket is torqued?
I not achieving it.

Thanks!

 

[PeterJoe]

Your sprocket nut is on backwards. You need to place the chamfered edge of the nut towards the sprocket for clearance purposes so that the nut seats against the sprocket properly.

Peter Firkins

 

[Mofosheee]

Thanks..... Can't believe I did that

 

[L.A.B.]

Your sprocket nut is on backwards. You need to place the chamfered edge of the nut towards the sprocket for clearance purposes so that the nut seats against the sprocket properly.

It could be correct because the outside face is also chamfered but less so than the inside face in the link, below.

Google Image Result for https://www.mca-aston.co.uk/images/parts/D409A.jpg

 

[L.A.B.]

Ok, it probably is fitted incorrectly then if the nut is fitted wrong in the last picture.

Norton Companion

Of and for Norton Motorcycles

www.doov.com

 

[Torontonian]

Thanks..... Can't believe I did that

Lots of owners have made the small boo-boo of fitting the nut backwards. Doesn't back off regardless.

 

[concours]

Lots of owners have made the small boo-boo of fitting the nut backwards. Doesn't back off regardless.

Makes it difficult to get a good bite on it with the socket. Also, the tips of the hex would be contacting, not the face of the nut.

 

[Grandad]

When faced with a difficult or slim fastener I grind the end of the socket back so as to remove the chamfer / lead on the socket which gets a more secure "bite " which can generally give a good 1/8" or more " bite "

 

[baz]

When faced with a difficult or slim fastener I grind the end of the socket back so as to remove the chamfer / lead on the socket which gets a more secure "bite " which can generally give a good 1/8" or more " bite "

Yep I do that too

 

[Mofosheee]

Lots of owners have made the small boo-boo of fitting the nut backwards. Doesn't back off regardless.

I got lucky. Mine came off.
In my world, I would think radius-ed side out.
All good now

Thanks everybody!

 

[Torontonian]

I got lucky. Mine came off.
In my world, I would think radius-ed side out.
All good now

Thanks everybody!

The sprocket itself has a slight curve I recall and requires the chamfer of the nut to face it.
Never ground down the face of a big deep socket to get a bit more grip depth happening because a friend welded up 6 plates of stock bar cut steel with a handle of steel on the outboard side. I strike it using a hammer , tight , then back it a tad forwards or backwards to line up the securing plate hole. I also changed the screw to a hex head.