I know things... A lot of things.
Join Date: Feb 2015
Motorcycle: GSXR 750 K4
Re: How To Adjust Throttle Free Play And Why
Is what still true? Whether adjusting throttle cable slack is important for throttle control? I see no reason why it shouldn't be. I far as I can see, the importance of having little slack is that, if you have a lot of it, you'll have to consciously take it up before you start to think about opening the throttle, which is a waste of time at worst or an inconvenient, unnecessary extra step at best. If you don't do that, you'll probably jerk the throttle open as your hand will have gathered some momentum during the initial phase, where its just twisting a freely revolving tube, which will then cause you to open the throttle more than you intended. The fact that during the initial, freewheeling phase, your brain has no feedback with which to calibrate its control over the force applied by your wrist, will probably make things worse.
Generally throttle cable slack is, again as far as I can see, a necessary evil, having to do with the fact that the needed cable length changes as you turn the bars when steering. If you had zero freeplay when the bars are straight, the cable would tighten to the point of pulling the plates open, when in full lock. That's why, instead of shooting for 2-3mm of freeplay or whatever, I just turn the bars to full lock, say left, take up all the slack and then turn the bars to full lock right and make sure the engine doesn't rev up.