Help me figure out what’s happening here! - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 Old 07-06-2018, 04:16 PM Thread Starter
Registered User
 
CrucialProspect's Avatar
 
Trader Feedback: (0)
Join Date: Jan 2016
Posts: 915
Help me figure out what’s happening here!

I’m having some problems using Livelink gen2 datalogging and trying to see a little more in depth what my car is actually doing during an 1/8th mile pass.

On my graph I highlighted rpm and vehicle speed. The issues I’m having is a what I can hear during a video of the pass is a slight bog in the 1-2 shift. Using math the 4r70 gear set shows it should be a reduction of 55% rpm.

I’m launching at what is showing 4100rpm and it climbs to 6470 (rev limit) where speed tapers off a few mph. Rpm drops to 5374rpm before climbing back to 6350rpm when I shift to second. 3668rpm is the lowest rpm it drops to. Not knowing exactly where I shifted at that point still puts me well within reason of 55% drop in rpm.

I also set up a bookmark that marks my 1.66 60’ et which shows the car has just hit redline and vehicle actually starts tapering down on speed before recovering.

My question is, am I looking at this information correctly first of all, second of all, and more importantly, how do I keep my vehicle speed in an upward motion throughout the whole pass? I think from the data I can assume at the top end of 1st gear where speed tapers off that I lose traction and once I bounce off limiter the speed and rpm drop, before climbing slightly again before the shift. If the engine at redline drops 55% rpm to second gear, 3575rpm drops it out of its torque curve a bit hence the bog, so it seems like nothing short of a different 1st gear ratio is going to help. Thanks guys!

CrucialProspect is offline  
Sponsored Links
Advertisement
 
post #2 of 2 Old 07-06-2018, 04:18 PM Thread Starter
Registered User
 
CrucialProspect's Avatar
 
Trader Feedback: (0)
Join Date: Jan 2016
Posts: 915
Here’s a screenshot of the data log

Attached Images
File Type: jpg A4EC36CB-7715-4BC1-A9A7-93CAE777A526_1530908193948.jpg (69.7 KB, 9 views)
File Type: jpg 60B5F78D-0B08-4B63-BF10-F3C6212648D6_1530908270292.jpg (73.1 KB, 8 views)
CrucialProspect is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rodney King, key figure in L.A. riots, dead at 47 GTinMS Lounge 7 06-18-2012 10:08 AM
How do you figure out if you are at zero deck? Wicked03GT 5.0/5.8 Engine Tech 23 05-06-2012 05:27 PM
Need to figure my new Dart shortblock. the_bock 5.0/5.8 Engine Tech 15 04-28-2012 03:50 PM
found two ECU's in my stang, cant figure out one of them, need help! mn12xr7 EEC Tech 2 12-01-2011 12:15 AM
EEC pinout for 01 gt? Or help me figure out what this is PLEASE. one_live95 GT & SOHC 10 10-25-2011 02:06 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome