Timing adjustments and Timing patterns
Thread Starter
|
Road Master
Joined: May 2012
Posts: 773
Likes: 124
From: Between purgatory and retirement
Couldn't whittlebeast put together a how to sticky tutorial for all of us PV users. That would enable us to use his software to tune the timing tables. He could do step 1: how to tune your VE tables and step 2: how to tune your timing tables.
As far as timing, I believe that was the purpose of this thread, for us to help him develop a method to tune and/or check the tuning of the timing tables without the need of a dyno.
Road Master
Joined: Mar 2007
Posts: 1,177
Likes: 23
Fuel is quite a bit easier to get your head around.
I did a thread on "scatter plots for beginners" on a different forum. I could do one here if the mods don't mind. The basics work on anything you are tuning and with any tuning software.
I did a thread on "scatter plots for beginners" on a different forum. I could do one here if the mods don't mind. The basics work on anything you are tuning and with any tuning software.
Road Master
Joined: Feb 2016
Posts: 858
Likes: 140
From: USA
Ok, I Just thought he could roll all of it up in one thread.
Road Master
Joined: Feb 2016
Posts: 858
Likes: 140
From: USA
That would be great on this forum. Please start one. I'm so confused looking at the scatter plots. Any help would be appreciated.
Road Master
Joined: Feb 2016
Posts: 858
Likes: 140
From: USA
Thanks!
Road Master
Joined: Mar 2007
Posts: 1,177
Likes: 23
See http://www.nbs-stl.com/tuning/BasicTuning101.pdf
At the end, I cover scatter plots and what they are.
Andy
At the end, I cover scatter plots and what they are.
Andy
Road Master
Joined: Mar 2007
Posts: 1,177
Likes: 23
In all of this scatter plot stuff, you have to accept that MAXxRPM is essentially air flow and really HP if you if you divide by the right number. This assumes that your motor does not have some strange thing going on. Most motors in the world do not have this sort of thing happening. An example could be things like a stopped up catalytic converter.
Keep in mind that if the timing is really screwed up, this assumption is not even close.
Andy
Keep in mind that if the timing is really screwed up, this assumption is not even close.
Andy
Thread Starter
|
Road Master
Joined: May 2012
Posts: 773
Likes: 124
From: Between purgatory and retirement
Here is what I am thinking my be worth trying. See the red line on the right. The goal is smooth running motor with very little but occasional slight knock retard.
http://www.nbs-stl.com/HarleyTuning/HarleyTiming.jpg
Andy
http://www.nbs-stl.com/HarleyTuning/HarleyTiming.jpg
Andy
As I said, mine looks nothing like that!
But what I found is, if, in the right pane, you change the field to Duty Cycle it reveals where the lower dog-leg comes from.
Don't know if that helps, but ...
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Road Master
Joined: Mar 2007
Posts: 1,177
Likes: 23
Here is what a lot of data looks like. This guy runs the crud out of this bike.
http://www.nbs-stl.com/HarleyTuning/...ing%20Data.png
Andy
http://www.nbs-stl.com/HarleyTuning/...ing%20Data.png
Andy