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Nevermind. I need a different lockring and tool to suit thru axle hubs.
http://m.ebay.co.uk/itm/Shimano-SM-HB20-Centerlock-Rotor-Lock-Ring-for-15mm-20mm-Through-Axle-Hubs
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I'd be starting at 45.
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how low can I go without it being sloppy
Depends a bit on the rim width, but @umop3pisdn 's starting suggestion sounds reasonable, and on the right rims you could probably go down to 35f/42r without any trouble. The best answer is to try it and see what you like, as personal preference is part of the equation.
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Try this calculator should give you some idea.
Something like 35 psi looks good depending on your weight etc.
http://www.biketinker.com/wp-content/uploads/2011/04/Tire-Pressure-salvaged-doc.xlsx -
No, I need a lockring for a thru-axle hub
To be fair to Ed, your first question was "What tool do I need?", to which he gave the correct answer.
It's really for the hub manufacturer to supply the appropriate lock ring, as you re-use it when you replace your rotors so it has no business being packaged with the consumable part.
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Well he's still wrong because the BB tool wouldn't fit the QR version lock ring I have.
Also, my second post answered my question 2hrs before his response. Thanks for playing but the jackpot rolls over for another week.Shutter Precision need to sort their lock ring supplies out. Too late for me to hassle them about it, I've found a 6-bolt converter that includes lockring for less £ than just the lockring I need. Stupid fucking disc brakes.
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Well he's still wrong because the BB tool wouldn't fit the QR version lock ring I have
Depends which BB tool. Some Miche and Stronglight BBs use the HG lockring tool as used for small pattern centrelock lock rings. Some QR hubs (Fulcrum) use the HT2/GXP/UT BB tool for the Centrelock lock ring. Basically, there's no way for Ed to be wrong here :-)
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There is, because the lockring I have uses a cassette tool, not a BB tool. There is no BB on earth that would have a tool small enough to fit INSIDE the lock ring.
Thankyoucomeagain... #hippyisalwaysright
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There is no BB on earth that would have a tool small enough to fit INSIDE the lock ring
I have a Stronglight BB right here in front of me which uses exactly that tool.
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Yeah, but it won't fit my wheel because the thru-axle takes up the space where the tool goes!
Hence me needing a different lockring, which I have ordered, which renders this whole conversation pointless. But I'm tired and not interested in actual work yet so we can go on and on in circles if you'd like, you know I'm good for it.
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it won't fit my wheel because the thru-axle takes up the space where the tool goes
That's a different question. Just admit that Ed was right, because when he said that a BB tool fits a CL lockring, he was correct as far as he went because for each type of CL lockring, there is at least one BB which uses the same tool :-)
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"What tool do I need for centerlock disc on SP dyno hub? The thru axle is taking up the space a normal cassette lockring tool would slot into, only the small spline gaps are accessible."
This was the question.
His answer is wrong because the tool required can be a cassette tool OR a BB tool depending on the hub in question.
You're more than welcome to try and tighten the lockring with a BB tool. I'll come and visit you in 1000 years when you've worn the hub body to dust and the lockring isn't any tighter.
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How soon do you need it?
Maplin sells IPA at £15/litre.
Darrent sells IPA at £2.10/litre and Acetone at £2.26/litre.
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Any question answered...
Posted by
@carson
What tool do I need for centerlock disc on SP dyno hub? The thru axle is taking up the space a normal cassette lockring tool would slot into, only the small spline gaps are accessible.