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10-spline disc lockring tool?

by Cugel
Wed, Apr 19, 2023 14:21
9

Shimano Tourney 160mm discs (the least expensive Shimano discs to be found) come with a disc lockring having the normal external notches for a tighten/slacken tool but with an unusual 10-spline internal (in the axle hole) arrangement that's also slightly bigger in diameter than the internal diameter of standard disc and cassette lockrings.

I'd like to apply an internal 10-spline tool to these Tourney lockrings as this enables use of a torque wrench, which is not possible when using the big notched spanner to tighten disc lockrings via the external notches. 

I've searched up & down on the interweb but can't find a 10-notch/spline tool to fit these Tourney lockrings.  Anyone know where such a thing may be had - and why just the Shimano Tourney disc lockrings have this non-standard arrangement when every other lockring has the standard 12-spline arrangement?

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

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9 comments

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mark1a | 1 year ago
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Is the hub compatible with a standard CenterLock lock ring? If so, remove the lock ring with the external BB tool, then replace with a new lock ring that uses the freewheel tool. 

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IanMSpencer replied to mark1a | 1 year ago
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Apparently, just the Tourney has been given an alternate lock ring which is not TL-LR5 (?is that it, my Park Tools is a 5) compatible. Whether it is a move intended to go with future releases isn't clear but it seems to stand alone. I suspect rummaging about in my kit, I already have such a beast, I've got all sorts to cover a device designed in the same way as gear hangers it seems.

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IanMSpencer | 1 year ago
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I just Googled the thing and saw the spec on Wiggle. It seems that they have actually intended to design it to be compatible with a couple of existing tools... but...

In my Park Tools kit I got all sorts of different fitting cassette spline sockets, so I think it is intended to be one of these existing tools. The outer looks like a typical Shimano Hollowtech BB tool (TL-FC36), and the inner is apparently a Shimano TL-LR11 tool. A quick Google refused to unearth a Park Tool or other brand equivalent, and it appears that it is specific to this disc.

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Hirsute | 1 year ago
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I'd give sjs cycles a ring.

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mike the bike replied to Hirsute | 1 year ago
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Hirsute wrote:

I'd give sjs cycles a ring.

 

Me too.  If they don't have it, nobody will.

Although to be fair, torque wrenches are very much over-rated.

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Cugel replied to mike the bike | 1 year ago
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mike the bike wrote:

Hirsute wrote:

I'd give sjs cycles a ring.

 

Me too.  If they don't have it, nobody will.

Although to be fair, torque wrenches are very much over-rated.

In what way are torque wrenches "overated"?  Do you mean technically (i.e. they don't actually apply the torque you set on them) or do you mean that setting a fastner to a more exact torque than "tight as it'll go" is a waste of time as any tightness will do for any fastner?  I think we should be told!  1

Those Tourney disc retaining lockrings will tighten with the 16-notch BB-tool as they have the same external diameter and notch-profile. Given the apparent absence of any tool in the market that'll fit the 10-spline internal tool interface, I'm going to obtain a 16-notch tightening tool that has clearance for the hub axle poking out throughthe lockring, as well as a 1/2" or 3/8" square 'ole for the torque wrench to fit in to.

I do have a 16-notch BB tool but, alas, it's too shallow to reach the disc lockring notches as the wheel axle prevents it. Also, it has no way to attach a torque wrench.

I did e-mail SJS about a 10-spline tool to fit but, so far, no reply.

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IanMSpencer replied to Cugel | 1 year ago
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The 10 spline tool is Shimano TL-LR11. Comes up in Google searches at a variety of prices, with unknown delivery charges, wouldn't like to say what the real cost is.

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Cugel replied to IanMSpencer | 1 year ago
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IanMSpencer wrote:

The 10 spline tool is Shimano TL-LR11. Comes up in Google searches at a variety of prices, with unknown delivery charges, wouldn't like to say what the real cost is.

The least expensive option for this TL-LR11 seems to be Amazon at £23.95 - a rip-off for such a crude tool, which various reviews also allege has insufficient penetration of the splines with which to apply 40Nm torque without the danger of the tool mangling the lockring splines realising very easily. There's another option costing only £60!

But thanks for identifying the tool designation/name.

The alternative is a BBB BTL-105 external 16-notch disc lockring intaller/remover. This costs £18.70, has plenty of grip i' the notch, also removes 16-notch BBs, has plenty of depth to avoid wheel axles preventing tool-grip and takes a torque wrench square drive.

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mike the bike replied to Cugel | 1 year ago
4 likes

Cugel wrote:

mike the bike wrote:

Hirsute wrote:

I'd give sjs cycles a ring.

 

Me too.  If they don't have it, nobody will.

Although to be fair, torque wrenches are very much over-rated.

 In what way are torque wrenches "overated"?  Do you mean technically (i.e. they don't actually apply the torque you set on them) or do you mean that setting a fastner to a more exact torque than "tight as it'll go" is a waste of time as any tightness will do for any fastner?  I think we should be told!  :-)..........

The golden rule round here is simple - tighten until it shears and then back off half a turn.  

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