SRAM PG850 on a 2008 Jamis Ventura Sport
I've got a 4 month old bike with 3,000km ridden, everything is working perfectly.
I highly recommend the mount as a first time road bike. (The new Sora gears are terrific, Shimano fixed the trim problem, on compact chainrings at least.)
Whilst cleaning and lubricating the bicycle, I notice the cassette can be wobbled by placing your thumbs on opposite sides of the largest ring and pressing inwards alternately on each side, rocking the cassette.
There is visible play of about 2mm. Seems quite a lot to my eye.
I was able to compare this with a brand new unused identical model, and it too has play of about 1 or 2mm. You have to work at it to get the cassette to wobble when the bearings are packed with fresh grease, but wobble they do, even when new.
It is possible the assembler left them a bit slack on purpose, or was careless.
Is this an acceptable amount of wobble?
Looking at other bikes I find some cassettes are rock solid with no play at all.
If I wanted to remove this play, what precisely needs to be tightened up?
The cassette lock ring was tightened correctly to the specified 40Nm, but perhaps there could be a shim added to stop the rocking.
I understand there are large allen bolts deep inside the Formula hub that tighten the freewheel up, is it those that need tightening?
I'd like to know for sure before I let my dealer loose with the spanners. He's a bit green.