Attaching a fixed/track cog and lockring to a Giant Bowery

OK, so I got one of these this morning and have it pretty much all assembled but the fixed cog did not come attached as I expected.

I have three bits, a screw-on cog, a lockring and a rubber ring that seems to fit perfectly into the lockring (this rubber ring came in a seperate bag with some other screws and stuff so it may be unrelated.)

How do I attach this- what sort of tool do I need? Preferably from CRC or Wiggle, or if it is likely to be found in my LBS. Is it a standard freewheel lockring tool or are the fixed ones different?


I have three bits, a screw-on cog, a lockring and a rubber ring that seems to fit perfectly into the lockring (this rubber ring came in a seperate bag with some other screws and stuff so it may be unrelated.)

How do I attach this- what sort of tool do I need? Preferably from CRC or Wiggle, or if it is likely to be found in my LBS. Is it a standard freewheel lockring tool or are the fixed ones different?
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take lockring, screw it onto the hub in the OPPOSITE direction, until it comes against the sprocket. You will need a lockring tool. i recommend hozan. http://www.hubjub.co.uk/etc/hozanzm.htm useful because one thing you will do is be changing sprockets in the future. use this to get it nice and tight.
take the bike out for a spin, ride up a big big hill. the cog will 'slip' forward in a short, sudden movement. don't be alarmed, it's just getting tight. go home, take off wheel, tighten up lockring again, job done.
Ta
L
Fixed FCN: 6
Any cheaper options on the lockring tool
the rubber ring is a free gift i think, although someone may tell you otherwise. i've never used a rubber ring whilst changing sprockets.
bear in mind - when riding the sprocket in, (up a hill, or accelerating away from the lights) it will slip, when it does, it's then settled, you can ride home, but try not to exert any backwards pressure, use the brakes, otherwise it may slip back again.
i tighten the lockring up without taking the wheel off, you can get enough purchase.
with regard to 'only one way', i meant the threads. but yes, shoulder against hub, lockring on flat side.
thanks for clarification.
Very happy indeed with the bike as I posted on another thread.
The rubber ring turned out to be a rain guard for the seatpost shim.