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gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 11:36 am
by nig
hello i have 350 bullet year 2000, and i am renewning the gearbox sprocket , how do i tighten the sprocket nut without a deep socket ? i have tried every where to find a deep socket of 7/8 whitworth to fit over the gearbox hub . cheers n.g

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 11:49 am
by papasmurf
have you tried google, many 7/8th deep sockets available from £12 to scary.

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 11:51 am
by Presto
have you tried our hosts - they list a spanner for this job - 98315

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 12:17 pm
by PeteF
A box spanner will do the job.

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 3:24 pm
by Mark M
As Pete says, if you Google the brand Melco (who also make tyre levers and stuff like that,) you should find plenty. There may not be one in the Whitworth range but a close-enough fit can be obtained crossing over to the metric ones. I think that's what I bought (44mm? can't remember) and it works well, good fit.

REgards, Mark

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 3:57 pm
by Presto
Just pick up your phone and call Hitchcocks and ask for 98315 - the very item you need! Never mind Google!

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 4:12 pm
by Gwilly
Box spanner with tommy bar or 18" stilson to turn, works well...

Its the depth of socket to clear the shaft which will make it expensive..

Don't worry about using a torque wrench just two grunts (technical term) and secure the locking tab on the washer..

1-1/2" AF can sometimes be found in plumbers merchant, spanner also fits the large nut on the rear swing arm, = 38mm same..

gearbox sprocket torque setting

Posted: Wed Feb 01, 2017 5:32 pm
by Mark M
Presto, reason for Googling was so he could see it and understand what he needs. If he wants to buy as well, then... Incidentally I use a smaller one of these for working on the front wheel spindle nuts which are also a sod to get at.

REgards, Mark

gearbox sprocket torque setting

Posted: Mon Feb 13, 2017 6:11 pm
by jefrs
Torque given in the EFI service manual for FD Sprocket M35x1.5 is given as 80Nm torque. I've no idea what size the "nut, gearbox sprocket" p/n 111160 (350 export 2000) is but a socket that large is usually deep enough to clear whatever.

gearbox sprocket torque setting

Posted: Mon Feb 13, 2017 6:14 pm
by jefrs
The indians normally use a tubular spanner on that, cheap as chips, but then they never use a torque wrench.