scrambler fcr39 jetting with zard low cross - Page 4 - Triumph Forum: Triumph Rat Motorcycle Forums

Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.
Sponsored by: Long Beach Motorsports

Reply
 
LinkBack Thread Tools Display Modes
post #31 of 33 (permalink) Old 11-15-2012, 06:31 PM
Senior Member
World SuperBike
Main Motorcycle: 2008 Thrux
 
NorthernThrux's Avatar
 
Join Date: Mar 2008
Location: London, ON Canada
Posts: 1,893
Other Motorcycle: 2010 Speed Triple
I too have had the same issue with Dyno Jets and I think it has to do with the wasted spark. They use an inductive pickup and you start to get cross talk from the "dead" cylinder ay higher rpm. It's a radio frequency interference issue, not a ground issue. Using the negative lead on the ignitor as the LM2 does avoids that issue.

2008 Thrux. 1087 TPUSA motor. SOLD
2010 Speed Triple. SOLD
NorthernThrux is offline  
Sponsored Links
Advertisement
 
post #32 of 33 (permalink) Old 11-16-2012, 12:13 PM
Senior Member
Commentator
Main Motorcycle: 03 T100
 
mikeinva's Avatar
 
Join Date: Mar 2007
Location: richmond va
Posts: 8,200
Send a message via AIM to mikeinva
Quote:
Originally Posted by NorthernThrux View Post
I too have had the same issue with Dyno Jets and I think it has to do with the wasted spark. They use an inductive pickup and you start to get cross talk from the "dead" cylinder ay higher rpm. It's a radio frequency interference issue, not a ground issue. Using the negative lead on the ignitor as the LM2 does avoids that issue.
That could well be it.I wish i could see what these motors look like on a old sun scope (lol if i still know what im looking at) I wonder what happens at hig rpms.

Why do I feel young on my bike
mikeinva is offline  
post #33 of 33 (permalink) Old 11-16-2012, 07:04 PM
Forum Liaison
SuperBike
Main Motorcycle: 04 Thruxton
 
RumRunner's Avatar
 
Join Date: Feb 2009
Location: North GA Mountains
Posts: 1,443
I'd love to hook up the ignition to a scope and see what it looks like through a power run.
RumRunner is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Triumph Forum: Triumph Rat Motorcycle Forums 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 your valid email address, that can receive an automated confirmation message. Otherwise, you won't be able to gain full access.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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
Zard Cross exhaust numbers VodkaAndPickles Twins Talk 37 10-18-2012 07:12 PM
zard cross - UK legal shutty Twins Talk 10 08-18-2012 04:46 AM
ZARD Cross... who has it, I need help installing shekmark Twins Technical Talk 2 11-25-2009 06:50 PM
need help installing Zard Cross 2-1 shekmark Twins Technical Talk 8 11-23-2009 08:47 AM

Posting Rules  
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are On

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