Rear hub nut

[RussLCV]

What size is the rear hub nut please, I am lead to believe that its 1" 7/8in AF, or is is 1 1/8 whitworth?

[philthehill]

The size of the rear hub nut is 1 7/8" AF.
There is no torque figure quoted - it just needs to be done up tight.

[mogbob]

Russ
Don't forget /overlook the " Stickie " called Spanner Sizes at the top of the Mechanical section of the Forum. It's got a lot of the usual things / sizes we forget.
Bob

[HarryMango]

The vast majority of body / steering & suspension fixings on the minor are BSF threads & have Whitworth heads so the correct size socket / spanner for the rear hub nut is definitely 1 & 1/8 Whitworth (1 & 7/8 AF is very close & works well though) - I use my trusty King Dick Whitworth cranked ring spanner

Rog

[RussLCV]

Russ
Don't forget /overlook the " Stickie " called Spanner Sizes at the top of the Mechanical section of the Forum. It's got a lot of the usual things / sizes we forget.
Bob

seems its not right!

[RussLCV]

The vast majority of body / steering & suspension fixings on the minor are BSF threads & have Whitworth heads so the correct size socket / spanner for the rear hub nut is definitely 1 & 1/8 Whitworth (1 & 7/8 AF is very close & works well though) - I use my trusty King Dick Whitworth cranked ring spanner

Rog

Many thanks Harry

[RussLCV]

I have also been advised 48mm socket will fit?

The 48mm socket I have does not fit but is the correct size? See pics below is it bigger than a 48mm?

to me a 47 mm would work although is my socket the correct it says 48mm but measures more

yet in this picture its is clear a 47mm would not work?

so is my socket stamped wrongly?

[Declan_Burns]

[quote="RussLCV"]so is my socket stamped wrongly?

Russ,
Is it by any chance stamped "Made in China"?
I have attached a drawing of the spanner as I think it should be. I hope to have a few laser or water jet cut but could take some time. There are online laser /water jetting cutting services available . If anybody wants to have one made up I can provide a vector graphic file (dxf).
There is a spanner available for the Spridget from Australia but their postage would rule out that option immediately.

Regards
Declan

[RobThomas]

Declan. Have you thought about adding holes for the 4 wheel studs to help keep it all lined up nicely?? Put between the hub and the halfshaft, it would be held in position nicely if the wheel nuts went back on.

[Declan_Burns]

Rob,
I will add them-no problem as soon as it starts to rain again which should be tomorrow! I will also flare the handle while I`m at it.
Regards
Declan

[RussLCV]

These spanners readily avilable on line at £22.

My socket says its 48mm but its not see post above thanks all I off to purchase a decent Whitworth Socket 1-1/8......

[IslipMinor]

As a correction to an earlier post in this thread, the Minor used BSF threads on the body, but UNF/UNC threads on the mechanical parts. On our 1958, the inner end of the lower front suspension arm (body) has BSF threads, and the outer (mechanical) is UNF - that is the original BMC spec and being really pedantic!

The rear hub nut is a 'mechanical part' and has a 'Unified' 60° thread form with a hexagon size of 1 7/8" AF - as the corners of the hexagon are already machined off as 'standard', use a 6-sided socket, not 12.

The nearest imperial socket is 1 1/8" BSW / 1 1/4" BSF, and is 0.015" smaller at 1.860", but will probably fit. The nearest metric is 48mm, which is 0.015" bigger at 1.890", so could slip off?

Why not just get the right size socket (1.875" AF) that will fit and do the job as intended?

[RussLCV]

Cheers Richard is that socket available?

[firedrake1942]

looks like it and 6 sided too !

http://www.baconsdozen.co.uk/tools/sockets.htm

[philthehill]

The Koken 1 7/8" socket listed in the baconsdozen website is the one but you will have to put the socket to the grindstone to get rid of that female concave bottom.
The hub nut is too thin at 6.4mm and which has a chamfered outer edge to safely accept a socket with a female concave bottom as only a small proportion of the nut will be held - therefore leading to a high probability that the socket will slip off the nut.
At the price of the socket you can get the flat plate spanner which has the effort to undo and tighten in the same plane as the nut so there is less chance of damaging the nut by slippage or yourself.
Russell you can see the link to the flat plate spanner in your wanted post.
I have both the 1 7/8" socket with concave ground away and flat plate spanner and the flat plate spanner is the better of the two.
Phil

[Declan_Burns]

Rob,
this is what it could look like.
Regards
Declan

[RobThomas]

Yes, Declan, that is what I was thinking about. You could put that over the nut, slide the half shaft back in, tighten up the wheel nuts and then there is no way the spanner can slip off of the nut. Maybe a longer and thicker handle so you can get more leverage? More like an egg shape to the outside of the piece?

[Declan_Burns]

Rob,
No need -you can just stick it into a long piece of rectangular tubing or even weld it. It is much easier and cheaper to laser cut flat steel. I`ll see if I can get a price on it.
Regards
Declan

[philthehill]

Rob
What you are suggesting as regards a laser cut rear hub nut spanner is readily available here in the UK and can be supplied with either a long or short handle.

http://www.ebay.co.uk/itm/MORRIS-MINOR- ... SwLVZVg9UB

Reverse the wheel nuts to contain the spanner to the hub nut/hub and the spanner cannot slip off the hub nut.

Phil

[RussLCV]

By the way new nuts are smaller! 46mm or 1"13/16 AF