Shortening chain on Hollowpoint -- where is the chainstay length the longest?
Well, I swapped the bigring for a bashring on my 2k4 Hollowpoint Expert and have not yet shortened the chain. I was hoping someone might be able to tell me the best method for shortening it, or where in the travel the chainstay length is the longest (full extension vs. full compression, or somewhere in between). Thanks.
If you haven't done it already, you can partly deflate your rear shock and then compress the suspension, watching for where the derailleur "bends in" the greatest amount. Likewise, you can tie a piece of string around your BB spindle, zip-tie it to the QR or QR nut, and look for where in the suspension cycle you get max string tautness (everywhere else it will have slack).
As for chain sizing, for a 2x9 type setup I'd still use the Shimano/SRAM recommended "big-big" method, but since you'll actually be running in your big-ring big-cog (unlike a 3x9), I would add an extra link or two to let off your rear derailleur just a bit.
SRAM & Shimano "Big-Big" chain sizing method:
Long cage derailleur at Max extension on a typical big-big setup:
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