Join Date: May 2004
Location: Toronto, Canada
The down-angle is supposed to be somewhere near 12 degrees with the suspension unloaded. Don't go by what it is with the suspension loaded - go by 12 degrees with the suspension unloaded and whatever the correct rider-aboard sag is front and rear, and under those conditions, the angle is whatever it is.
Too-flat swingarm angle is one of the reasons that bikes with lowered suspension and/or extended swingarms have poor rear-end grip when accelerating out of corners. If you have swingarm down-angle, then when the chain starts pulling and the axle starts applying force to accelerate, the down-angle applies a force downward at the axle that largely offsets the extra weight transfer, so that the rear suspension doesn't have to compress before the tire gets planted against the ground.
Helibars, MRA screen, Ohlins damper, reversed shift pattern, sorted suspension, braided lines, Michelin Pilot Power, all else stock 'coz it's fast enough!