Rear sprocket for short track - Yamaha R6 Forum: YZF-R6 Forums
 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 03-03-2016, 05:59 PM Thread Starter
Just made this great wheelie.. did you see it?!
 
Dezmonster's Avatar
 
Join Date: Feb 2013
Posts: 57
Rear sprocket for short track

Currently running a Driven 520 pitch 45 T rear on my 2006 R6 track only bike.

I am heading down to the Australian mecca of tracks next week
Phillip Island so planning on leaving this set up as it is a fast track with only two slow corners.

I usually ride at track called Sydney motor sport track in Eastern creek , I marshal for free track time with a rider training group called Top Rider , we usually run our events on the souther loop
pictured below in red a short track with quick direction and altitude changes .

I am after more punch out of the corners , top speed is not an issue as the short staright is only around 170 kph .

50 t or 47 t sprocket change for the rear
Which would you use and how many extra links will these use.
Cheers
Attached Thumbnails
Click image for larger version

Name:	South-ECIR.jpg
Views:	27
Size:	197.5 KB
ID:	301361  
Dezmonster is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 03-04-2016, 09:43 AM
I eat my R6
 
Mott Power's Avatar
 
Join Date: Mar 2007
Posts: 484
Re: Rear sprocket for short track

It's hard to say because I have never been there and aren't familiar with the corners, but with it being a shorter track you just want to make sure you aren't stuck between shifting points on the straights and through the turns and keeping it within the useful powerband.

I frequent only "short", technical tracks with -1/+3 gearing sometimes and it helps keep it within the powerband instead of dropping below the torque curve in slower corners and then timing it right on the straight to not over-rev a gear at the braking point or have to up-shift only to begin braking almost immediately after choosing the gear. This all also depends on your pace and how well you drive out of the corners. I would say just get a -1/+2 which will be closer to a 50 tooth and go from there. If it's too much then put a 0/+2 on, so you'll have both a 47 and "50" tooth option to mess around with. You might need to add one link.

CCS #414
Mott Power is offline  
post #3 of 4 (permalink) Old 03-04-2016, 02:18 PM Thread Starter
Just made this great wheelie.. did you see it?!
 
Dezmonster's Avatar
 
Join Date: Feb 2013
Posts: 57
Re: Rear sprocket for short track

Thanks Mott
I have my eye on an eBay 48 T it is steel though so apart from weight any issue swapping from alloy ?
The chain and front sprocket are relatively new so hopefully this won't be an issue.

I have a friend who has offered me
-1 front sprocket he has as a spare.

I know this will increase RPM through the gears.
so a technical question :
Will a front +1 have exactly the same result as an increase in rear teeth ?
Will the force of leverage on the rear wheel be similar and will the front wheel be as likely to lift ?

Last edited by Dezmonster; 03-04-2016 at 05:25 PM.
Dezmonster is offline  
 
post #4 of 4 (permalink) Old 03-07-2016, 06:18 AM
I eat my R6
 
Mott Power's Avatar
 
Join Date: Mar 2007
Posts: 484
Re: Rear sprocket for short track

I have steel and aluminum sprockets I often interchange with no issue, so you should be fine as long as you take care of the chain properly. Having a -1 in the front sprocket is equal to about +3 in the rear; so if you have a -1/+2, then it's about equal to having just a 50 tooth rear sprocket with a stock front sprocket. Also, if you have a 190/55 or 180/60 rear tire then you'll want to add one tooth to the rear since it has a larger diameter and affects your final drive as well. So for instance, a -1/+2 on a 180/55 and a -1/+3 on a 190/55 is roughly the same final drive ratio.

In case you're not familiar with this website,
To view links or images in this forum your post count must be 5 or greater. You currently have 0 posts.
is a great tool to narrow down your options and select/compare gearing based on top speed of each gear.

CCS #414
Mott Power is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha R6 Forum: YZF-R6 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 a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
06 Front sprocket torque and rear sprocket torques? gawarrior General Discussions 11 05-20-2018 03:44 AM
FS: Driven Rear Sprocket w/ProBolt Sprocket Nuts for Marchesini & BST easbaysav Bike Parts For Sale 0 10-31-2012 11:29 AM
Sprocket Specialist 46T 520 Titan Tough Rear Sprocket for 06-10 R6 mikdivad Bike Parts For Sale 6 01-12-2011 07:09 AM
Rear Short Stalk Signals jjm004 Appearance and Exterior Mods 2 10-16-2006 09:16 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