Lock ring tool

[rideswithmoobs]

Which lock ring tool do I need for this ?
All the park tools for example FR6 are 4 notches, others are for 12 splines no lock ring. I don't seem to be able to find a tool for 6 notches

I asked Genesis and they just replied "a standard lock ring tool and chain whip".

 

[Citius]

All you need is a single notch c-spanner...

 

[Tim Hall]

Philistine that I am, I'd use a "suitable drift", as they used to say in the Haynes manual, and tap it with a hammer. Is that left hand thread? Remember that when you come to undo it. And is that a splined sprocket beneath it? If so, I can't see why you need a chain whip.

 

[rideswithmoobs]

All you need is a single notch c-spanner...

Why the hell didn't I think of that. Cheers Citius

 

[Citius]

And is that a splined sprocket beneath it? If so, I can't see why you need a chain whip.

It's a probably a screw-on sprocket - that's why you need the lock-ring.

 

[rideswithmoobs]

Philistine that I am, I'd use a "suitable drift", as they used to say in the Haynes manual, and tap it with a hammer. Is that left hand thread? Remember that when you come to undo it. And is that a splined sprocket beneath it? If so, I can't see why you need a chain whip.

Many a time in the worshops as a young un I have employed that method but leaves a nasty burr and I'm too anal now and think right tool for the job although over looking the obvious that Citius pointed out would suggest I am the tool

 

[Tim Hall]

It's a probably a screw-on sprocket - that's why you need the lock-ring.

Good point. Although Miche, for example, do a screw on carrier which then takes a sort of splined sprocket held snug by a lockring. Which isn't what the OP has.

 

[Smokin Joe]

It's a fixed sprocket and as implied the lock ring does have a left hand thread.

 

[Ajax Bay]

And how, I wonder, would you make sure the lock ring was torqued back up to 40Nm?

 

[Citius]

Good point. Although Miche, for example, do a screw on carrier which then takes a sort of splined sprocket held snug by a lockring. Which isn't what the OP has.

True, but the Miche sprocket is still fundamentally a screw-on sprocket, but in 2 pieces. My son has one on his track bike..

 

[Smokin Joe]

And how, I wonder, would you make sure the lock ring was torqued back up to 40Nm?

It isn't critical, long as it's tight that's enough. Back in the days when fixed wheel bikes were common among club riders no one other than garage mechanics and engineers even had a torque wrench.

 

[Smurfy]

It looks like an old style bottom bracket lockring, in which case Park Tool BBT-7 may fit.

http://www.wheelies.co.uk/p11118/Pa...et-Tool-XTR-Dura-Ace-Lock-Ring.aspx?sku=40661

 

[Smurfy]

And if that is his Genesis Day One 2015, I'm pretty sure it is SS not fixed. Which means the sprocket is likely splined with no thread, and the lockring is screwed onto a standard full width freehub body, or possibly a truncated freehub body. If that is the case I'd expect the diameter of the freehub to be around 34mm. I bought one of those BBT-7 tools for adjusting my cup and spindle bottom bracket on an old bike, and it makes tightening the lockring very easy compared to a hammer and drift, or a c-ring spanner.

 

[rideswithmoobs]

And if that is his Genesis Day One 2015, I'm pretty sure it is SS not fixed. Which means the sprocket is likely splined with no thread, and the lockring is screwed onto a standard full width freehub body, or possibly a truncated freehub body. If that is the case I'd expect the diameter of the freehub to be around 34mm. I bought one of those BBT-7 tools for adjusting my cup and spindle bottom bracket on an old bike, and it makes tightening the lockring very easy compared to a hammer and drift, or a c-ring spanner.

Splined free hub is about 34mm Smurfy and yes it's a Genesis day one Ss. The park tool looks like it will fit so think I will get one of them. Nothing wrong with the rear set up its just I like to know how it goes together and what's needed to strip it/re assemble. Plus I can change to a 16t cog if I need.

Thanks everyone for all your help in identifying

 

[Smokin Joe]

Ooops, didn't notice the splines