Very quick question about the SRM sprocket nut

[duTch]

 

Pic of nut below:

Richard

  I think wrong nut

 

what size is the srm gearbox sprocket nut. See told you it was quick :)

 Yup- the (trick) question was so quick everyone read it quick- self included (initially)

 The answers have been generally quicker- I could only give a spanner style suggestion as I've never seen the SRM nuts Cush or Sprocket, but 1,1/2"  sounds most likely...I went off to measure something but now can't remember what

[JulianS]

The nut.

When I bought it I asked SRM what sized spanner was needed, then sourced a very long  1 1/2 AF ring spanner. Not too expensive.

[duTch]

 

The nut.

 yep-I still reckon a floggin' spanner if the box is out of the frame, but if a welder is available, easy enough to cut a socket in half above the '12 points', and separate the halves and weld a piece of tube over them so it's long enough...