ADVrider

Go Back   ADVrider > Bikes > GSpot > Parallel Universe
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-24-2015, 12:36 PM   #1
AThiker96 OP
Adventurer
 
Joined: Aug 2013
Oddometer: 33
Sprocket change for a 2013 700 gs

My friend wants to gear down down his f700gs .He wants to know how it will effect the handling, torque, top end and MPG . He wants to add a tooth to the front sprocket . Does anyone have any experience with this .Thanks
__________________
Work to ride, Ride to work
AThiker96 is offline   Reply With Quote
Old 06-24-2015, 02:16 PM   #2
AThiker96 OP
Adventurer
 
Joined: Aug 2013
Oddometer: 33
A another friend of mine said that he needed to drop a tooth for more low end torque .
__________________
Work to ride, Ride to work
AThiker96 is offline   Reply With Quote
Old 06-24-2015, 02:37 PM   #3
Full Power
Beastly Adventurer
 
Joined: May 2006
Location: Homer, Alaska
Oddometer: 1,602
Adding a tooth to (front sprocket ) of the already over geared 700 will make it TALLER ( geared) .

You will get a little more speed out of the first 4 gears, but won't be able to get full rpm out of 5th and 6th.
Raising the overall gear ratio on a 700 will result in a lower TOP SPEED, and the bike will be a pig getting rolling in first gear. ( noticeably MORE clutch slippage will be required to get moving.)
There will be NO, NYET, ZERO fuel economy advantage.
__________________
Warm enough to RAIN is warm enough to RIDE.
Full Power is offline   Reply With Quote
Old 06-24-2015, 02:44 PM   #4
AThiker96 OP
Adventurer
 
Joined: Aug 2013
Oddometer: 33
Ok so he needs to drop a tooth. His main concern is having to ride his brakes as he descends and wants more engine braking .
__________________
Work to ride, Ride to work
AThiker96 is offline   Reply With Quote
Old 06-24-2015, 03:03 PM   #5
2thdrinOR
Adventurer
 
Joined: Apr 2015
Location: Redmond, OR
Oddometer: 21
Never heard of such a thing as needing more engine braking...
The benefit on some bikes to going a tooth smaller counter sprocket and perhaps a tooth or two larger on the wheel sprocket is to increase low end acceleration...fuel economy may suffer and on some bikes introduction of increased "buzz" when at cruising speeds.
2thdrinOR is offline   Reply With Quote
Old 06-24-2015, 03:12 PM   #6
Woody2627
Skinny Decaf Latte Thanks
 
Woody2627's Avatar
 
Joined: Nov 2008
Location: Jindabyne
Oddometer: 1,129
Quote:
Originally Posted by AThiker96 View Post
Ok so he needs to drop a tooth. His main concern is having to ride his brakes as he descends and wants more engine braking .
I have the F650GS, which is about 10% higher geared then the F800GS. I changed the gearing to the F800gs. Made no discernible difference (to me) to low speed riding or engine braking, but increased fuel consumption and brought the vibration level back to my touring speed. Changed it back to standard. I'd tell your mate not to bother, but it is a cheap mod if he wants to go ahead.
Woody2627 is offline   Reply With Quote
Old 06-24-2015, 07:56 PM   #7
Dorito
Dreamer and Doer
 
Dorito's Avatar
 
Joined: Jul 2010
Location: Maryland
Oddometer: 5,591
I ran the F800GS stock sprocket on the F650. I did it for more rideablity off-road, as it was extremely easy to stall out elsewise. I got greedy and went even -1 tooth more. That was too much.
__________________
BlastOff Adventures

Nothing (ad)ventured, Nothing Gained
Everything you want is on the other side of fear.
Dorito is offline   Reply With Quote
Old 06-25-2015, 10:07 AM   #8
Full Power
Beastly Adventurer
 
Joined: May 2006
Location: Homer, Alaska
Oddometer: 1,602
LOWER gearing, ie one tooth LESS front sprocket is an excellent idea for the F700.
__________________
Warm enough to RAIN is warm enough to RIDE.
Full Power is offline   Reply With Quote
Old 06-26-2015, 07:59 AM   #9
Reaver
Outta Here
 
Reaver's Avatar
 
Joined: Aug 2008
Location: Homeless Adventurer
Oddometer: 4,383
F800 16/42
F700 17/42
F650 17/41

The 700 is a happy medium. The 650 stalls easily, esp when 2 up or loaded. If one was really concerned with saving money on fuel, one wouldn't buy such an expensive big bike.
__________________
Leaving it all behind 2014
Pura Vida my Ass.
Reaver is online now   Reply With Quote
Old 06-27-2015, 09:04 AM   #10
AThiker96 OP
Adventurer
 
Joined: Aug 2013
Oddometer: 33
I think he wants to drop a tooth on the front for more low end torque .He wasn't too concerned with the gas mileage but he wanted to know if it would totally kill his gas mileage .
__________________
Work to ride, Ride to work
AThiker96 is offline   Reply With Quote
Old 06-27-2015, 10:12 AM   #11
Nickhob
Armchair adventurer
 
Joined: Nov 2013
Location: Nyon, Switzerland
Oddometer: 248
I replaced the 16T front sprocket with a 15T on my 800GS a couple of months ago.
Based on the sprocket calculator (http://www.sprocketcalculator.com) that means 6.2% MORE torque and 6.2% LESS speed.
I'm now using between 7-10% MORE fuel ( I do the calc every time I fill up) which for me makes sense based on the above. I also do believe that some of that 7-10% increase is because I am now riding more like a hooligan
acceleration is better so it just begs to be ripped just that little bit more. 1st/2nd/3rd gear are just so much more fun
The only downsides I see apart from fuel economy is that all the benefits I got from installing a wukaking power controller http://wukaking.com/products/ to tame the jerkiness have now disappeared and it is a little more buzzy at higher speeds (more than 95 km/hr - 60mph).
now on a more positive note, it takes me max 15 mins to change a front sprocket and I've got a 15/16/17T in stock so can change easily depending on the activity
__________________
All the gear and no idea......
Nickhob is online now   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

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 On

Forum Jump


Times are GMT -7.   It's 11:36 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2015