Trigger Wheel Advance Problems?
asfltdncr:
I have a 99 I/S and had a 6 degree put in mine about 20k miles ago.I didn't change from regular gas as others have suggested.
I found that the flat spot I had is gone and the throttle response is much more immediate.I'm more of a rider that is learning more information and confidence to work on my bike but see no apparent reason to ever remove it and go back to original.
Shockbushing Gary:
Quote from: Larry on March 06, 2009, 08:41:53 PM
Quote from: Shockbushing Gary on March 05, 2009, 06:33:48 PM
The advance in a Valk is not constant. The trigger wheel sets where the timing begins, but not the timing curve. That is set in the ICM.
I used a 6 degree wheel in my I/S from 2000 on. It topped out at 125 MPH. That is a direct measure of HP. If it was lacking, it sure wasn't much.
There is a definite bump in response thru the mid-range with the 6 degree wheel. I liked mine. You can buy one, or if you look around here a bit, you'll see how to modify yours to be a 6 degree wheel.
Are you saying, because the wheel starts the timing farther along that the normal flat spot in the response is also shifted ahead a bit too and as a result it is not felt the same in the throttle response? Or am I not understanding this correctly. If not perhaps you could clarify. TIA :) I was only going to put a 4 deg on as that is what I understood in past postings I've read would likely work the best and not advance the timing too much. I usually burn premium anyway because around here, it's cleaner.
Yes, the trigger wheel simply moves the timing in the advance direction by the # of degrees it specs. All the res of the curve remains as it was, obviously, X degrees advanced from stock.
Look at the timing curve highlighted in red. What was originally supposed to be shown was the cold curve. This is initiated by the ECT. Let's forget that for a moment. The rest of the curve, from 3400 RPM and 19* advance is correct. Now add 4 or 6 to that for the trigger wheel. I had good success with my I/S and a 6* wheel. I ran regular or mid-grade.
For you or those that are big on the ECT mod, this graph also shows why that's 1/2 a solution. The ECT cuts out at 3400 RPM, right where you want to it grab and go.
Hope this helps! :cooldude:
Larry:
Yup this helps a lot! This confirms that the TW is the way to go. Thanks a bunch for taking the time to respond. :cooldude:
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