so how did it feel at low speed, how did it run just sitting still at idle and no load
Fine, at idle just nice sweet tickover (around 1000 rpm). Coming off idle (low speed) it also felt fine. Didn't feel unbalanced at all.
I think Ill try that one of these days and if I get improvement, throw the sync tool on it, jsut for grins to see what it says[/QUOTE]
Yeah, give it a go! As mentioned in earlier thread the LHS throttle cable on the S bike had a burr in it and I think that's where carb imbalance was coming from as the LHS cable would hang up at around 4200 rpm while the RHS cable kept pulling. I guess when was pulling slightly on the LHS cable at the higher rpm I pulled it past its hanging up point and that's when things smoothed right out. Now if it was the RHS cable getting hung up maybe the results would have been different.
But I also just used this "technique"on a 78 /7 I was getting ready for the road. I first checked both throttle cables for any burs, bends etc to make sure they were no hang ups.
Then, set a nice even pulse between exhausts notes at idle by adjusting both throttle stops and idle mixtures to where it idled smooth and evenly. Once that was done out for a good warm up ride. I made sure I had cable slack in both sides first...with the RHS cable adjusted to 2-4 mm slack and locked in. At end of ride, with only LHS cable lock nut loosened off I began to gently adjust LHS cable to get what I felt was as smooth as I could get it at around 4000 rpm(in 3rd gear). I just slightly pulled the throttle cable with y fingers (below adjuster) to first see how smooth I could get). Once I found a point then I turned the cable adjuster itself until I found that point again and then locked nut down finger tight until I got home. Then locked it up. There was still adequate cable "play" on both sides at idle. Idle was as smooth as I started out with and noticed no imbalance when coming off idle at lower rpm. Not going to check it either with the $4 carb sync machine. It feels and sounds good at this point so why bother.
As Duane had pointed out, there will always be a compromise between carb balancing at idle (or actually just off idle) and at whatever hogher rpm range you run at (say 4000rpm in my case) You have to pick where you want balance to be and live with what the other will be. Too me, I like carbs to be balanced at around 4000 rpms as that's where I cruise at most off the time...if that results in slight imbalance at 1500 rpm then so be it.
Give it a go! I think Duane is pointing out that relying on your ears and "feel" to get what you want and less on the "technology" is quicker and more liely to take you where you want to be with these "low tech" machines. I think he's right.
He has a good write up on his website about it...just google "Duane Ausherman"
I have "come over" from the "dark side"....let the force be with you!