MnSpring
Serious Thumper
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Younger than most people my age.
Posts: 9347
Minn
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Well I approached the Idle, Warm-up, a different way.
Being new to this, (old style) engine, and learning a tremendous amount from the people here, that have, ‘Been their, Done that”.
Idle, needed to be fast, 1,200 + rpm, enough at start up, to adequately Lube the upper half of the engine. That accomplished 2 ways, Pull out the Choke, or increase the throttle screw.
As I (used to), drive a truck which had a ‘choke’, foot pedal, (gas/throttle), and, a ‘hand’ throttle, which could be set. I looked at the problems and solutions., and modified.
Problem, when I increased the throttle screw, the bike ran to high when warmed up. Didn’t want to keep the Choke out, (to warm up), 1. Didn’t need a choke to start, 2. Didn’t want the extra gas washing the oil off the Cyl.
So, a Shim. With bike warmed up, set the screw to about 1050RPM. Then a little piece of alum, (started with 1/16 inch thick). When bike was cold, opened throttle, set the shim between the throttle screw, and cable end, and started. (Just took a couple of draws with a rasp, to get to the right thickness, so when, ‘with shim’, Idle, ‘Cold’, was at about 1,400). Then took a piece of sturdy string, put it through a hole in the shim, and around something close.
Now, I shim it, start it, Put on jacket, helmet, gloves, (30-40 sec), drive it down the drive, (‘bout 200 yards), Not touching the throttle, (It’s at about 11-11.5 MPH, driving in 1st, no throttle, other than the, shim’.) stop, check traffic, and go. As soon as I twist the throttle, the ’shim’ just drops out. (and hangs their waiting till the next, cold, start) It is about 1.4 miles one way and 1.6 miles the other, till a stop sign. As that point, engine warm enough, the the idle is back to a comfortable 1,050 +/-
May work for you, may not. But it works for me.
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