2009 Street Triple R chain slack - Triumph Forum: Triumph Rat Motorcycle Forums
Street Triple Forum Owners and Enthusiasts of the new Triumph 675 Street Triple.

 4Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 17 (permalink) Old 06-19-2017, 09:32 AM Thread Starter
Grand Prix 250
Main Motorcycle: ST3R
Member
 
jshish8's Avatar
 
Join Date: Oct 2016
Location: Maryland
Posts: 52
2009 Street Triple R chain slack

I have read so many different values that I am thoroughly confused at this point. I am somewhat sure that the Streety has a lower slack value than the Daytona but that is about it. Anyone know what the true spec is? Is it better to be a bit too loose or a bit too tight?

| 2009 ST3R | ATGATT |
jshish8 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 06-19-2017, 12:12 PM
Grand Prix 500
Senior Member
 
Join Date: Jul 2016
Location: Columbus, OH
Posts: 122
You're right there is a different slack between Daytona and ST3. I just adjusted slack yesterday so I have the page up on my phone. BE FOREWARNED THOUGH: this is from the 2015 manual. 2009 slack may be different. I downloaded the manual from Triumph on my phone. They may have earlier model manuals available online too.

Here is what is in my manual:

Chain Free-Movement Adjustment

Street Triple and Street Triple R
The vertical movement of the drive chain must be in the range 0.5-0.9 in (13 - 32 mm).

Daytona 675 and Daytona 675 R
The vertical movement of the drive chain must be in the range 1.1-1.5 in (28 - 38 mm).
jshish8 likes this.
Brent27 is offline  
post #3 of 17 (permalink) Old 06-19-2017, 12:29 PM
Powerbike
Main Motorcycle: 2012 Street Triple R
Senior Member
 
dementedbrave's Avatar
 
Join Date: Jun 2012
Location: PA
Posts: 325
Garage
i like about an inch of slack in mine, pretty standard for most sport bikes. 25 mm is about an inch. a too tight chain will do more damage than loose, unless it actually loose enough to jump teeth on the sprocket.
jshish8 likes this.
dementedbrave is offline  
 
post #4 of 17 (permalink) Old 06-19-2017, 12:34 PM Thread Starter
Grand Prix 250
Main Motorcycle: ST3R
Member
 
jshish8's Avatar
 
Join Date: Oct 2016
Location: Maryland
Posts: 52
By vertical movement do you pull down then up and measure from the same reference point? Thanks guys! I adjusted to right under 1 inch so I think I am good..

| 2009 ST3R | ATGATT |
jshish8 is offline  
post #5 of 17 (permalink) Old 06-19-2017, 01:51 PM
Grand Prix 500
Senior Member
 
Join Date: Jul 2016
Location: Columbus, OH
Posts: 122
Quote:
Originally Posted by jshish8 View Post
By vertical movement do you pull down then up and measure from the same reference point? Thanks guys! I adjusted to right under 1 inch so I think I am good..
You're correct. As a summary, find a spot on the chain right in the middle of the two sprockets. From there, push the chain down and get a reading then push the chain up and get a reading. Difference between the two is the slack. Use one of the pins on the links as your measure points.

You should measure slack on the tightest part of the chain. Check the tension with your hands on multiple parts of the chain and pick the place the feels the tightest.

Lastly, though the manual is a bit vague, it looks like you're supposed to check chain tension with the wheels on the ground vs the rear being on a paddock stand.

Last edited by Brent27; 06-19-2017 at 01:57 PM.
Brent27 is offline  
post #6 of 17 (permalink) Old 06-19-2017, 01:56 PM
Grand Prix 500
Senior Member
 
Join Date: Jul 2016
Location: Columbus, OH
Posts: 122
Let me know if you need anymore help. I have easy access to the manual on my phone so I can copy instructions. Adjusting the chain isn't hard. The only real pain is the axle nut has a pretty high torque so it can be a struggle loosening it but is a breeze if you have a breaker bar/pipe.
jshish8 likes this.
Brent27 is offline  
post #7 of 17 (permalink) Old 06-19-2017, 03:11 PM
Formula Extreme
Main Motorcycle: 2014 Street Triple R
Senior Member
 
Join Date: Apr 2014
Location: Central Mass
Posts: 416
Other Motorcycle: 2013 Kawasaki Ninja 300
Quote:
Originally Posted by dementedbrave View Post
i like about an inch of slack in mine, pretty standard for most sport bikes. 25 mm is about an inch. a too tight chain will do more damage than loose, unless it actually loose enough to jump teeth on the sprocket.
That's what I gather as well, so I try to be near the upper limit of the range in the manual rather than the lower end of slack. One easy way for me to check if its getting a little on the loose side is to see how close chain is getting to the swingarm when I push it as far up as I can.
thousandwords is offline  
post #8 of 17 (permalink) Old 06-19-2017, 03:51 PM Thread Starter
Grand Prix 250
Main Motorcycle: ST3R
Member
 
jshish8's Avatar
 
Join Date: Oct 2016
Location: Maryland
Posts: 52
Quote:
Originally Posted by Brent27 View Post
Let me know if you need anymore help. I have easy access to the manual on my phone so I can copy instructions. Adjusting the chain isn't hard. The only real pain is the axle nut has a pretty high torque so it can be a struggle loosening it but is a breeze if you have a breaker bar/pipe.
I think I am in the middle range of the slack if not slightly biased toward the loose end. What are symptoms if it is too tight?

| 2009 ST3R | ATGATT |
jshish8 is offline  
post #9 of 17 (permalink) Old 06-19-2017, 04:24 PM
Formula Extreme
Main Motorcycle: 2014 Street Triple R
Senior Member
 
Join Date: Apr 2014
Location: Central Mass
Posts: 416
Other Motorcycle: 2013 Kawasaki Ninja 300
Quote:
Originally Posted by jshish8 View Post
I think I am in the middle range of the slack if not slightly biased toward the loose end. What are symptoms if it is too tight?
I might be wrong but i don't think there is a real symptom to it, the major downside of a tight chain is as far as I understand it is this: as swingarm travels up it will tighten the chain; if chain is too tight, it will limit swingarm, hence rear suspension travel. That's why wheelie enthusiasts set chain slack looser than recommended, because when you wheelie the rear suspension supports all the bike's weight so it will be compressed a lot more than usual, so you need more chain slack to allow for the extra travel. Take this with a grain of salt as I am not into stunting, but this is what I rear here and there.
jshish8 likes this.
thousandwords is offline  
post #10 of 17 (permalink) Old 06-19-2017, 04:40 PM
Grand Prix 500
Senior Member
 
Join Date: Jul 2016
Location: Columbus, OH
Posts: 122
I've heard the same as thousandwords, too loose you have drive line lash but too tight I haven't heard of any differences. Maybe a professional can tell the difference in how the rear suspension is acting.

I think if you're in the middle of the range you're fine. Over time the chain gets looser so you'll be moving towards the upper limit as you go along. I shoot for 3/4 of an inch and haven't had any issues. I had to adjust it for the first time in about 4,000 miles and it was at an inch even, so just outside the upper range.
Brent27 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options
All posts must adhere to Forum Rules

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
2018 Street Triple - Cleaning and Lubing Chain Methods Kremtok Street Triple Forum 1 06-12-2017 10:55 PM
Exhaust side valve clearances on daytona cams street triple thousandwords Street Triple Forum 1 01-16-2017 07:38 PM
Rather odd (read scary) past few days with my street triple thousandwords Street Triple Forum 4 06-16-2016 02:43 PM
2009 Street Triple Bgriff008 Street Triple Forum 0 09-29-2015 07:42 PM

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