1 down = ?
Thread Starter
Registered User
Joined: Nov 2003
Posts: 373
From: RACINE, WI
1 down = ?
ok everyone says something diff about what 1 down in the front is = to going up in the back . i hear guys saying it = 1 - 1/2 up in the back i heard 2 -2 1/2 up in the back i even heard it = 3 up in the back so what does 1 down = to how many in the back for sure ??? anyone know the right answer to this ?? and why there right ?
thanks .
thanks .
bp chaser
Joined: Oct 2002
Posts: 85,659
From: LI, NY and I drive in Australia
Re: 1 down = ?
Originally Posted by iceberg
ok everyone says something diff about what 1 down in the front is = to going up in the back . i hear guys saying it = 1 - 1/2 up in the back i heard 2 -2 1/2 up in the back i even heard it = 3 up in the back so what does 1 down = to how many in the back for sure ??? anyone know the right answer to this ?? and why there right ?
thanks .
thanks .
Example 1, close to stock gearing:
15 on the front, 45 on the rear equals a 1:3 ratio. A -1 front would in fact equal +3 in the rear.
Example 2, Big rear sprocket:
15 front, 60 on the rear. Now the ratio is 1:4. So now that -1 would equal a +4 change in the rear.
Example 3, exteme parking lot stunting gears:
14 front, 70 rear = 1:5 ratio you get the point by now
Thread Starter
Registered User
Joined: Nov 2003
Posts: 373
From: RACINE, WI
Re: 1 down = ?
Originally Posted by bill parr
all very good points, but i have noticed you loose more rpms when you change the gearing on the countershaft as apposed to just going up in the rear... 
Thread Starter
Registered User
Joined: Nov 2003
Posts: 373
From: RACINE, WI
Re: 1 down = ?
Originally Posted by MikeM
It depends on the ratio of teeth on the two sprockets.
Example 1, close to stock gearing:
15 on the front, 45 on the rear equals a 1:3 ratio. A -1 front would in fact equal +3 in the rear.
Example 2, Big rear sprocket:
15 front, 60 on the rear. Now the ratio is 1:4. So now that -1 would equal a +4 change in the rear.
Example 3, exteme parking lot stunting gears:
14 front, 70 rear = 1:5 ratio you get the point by now
Example 1, close to stock gearing:
15 on the front, 45 on the rear equals a 1:3 ratio. A -1 front would in fact equal +3 in the rear.
Example 2, Big rear sprocket:
15 front, 60 on the rear. Now the ratio is 1:4. So now that -1 would equal a +4 change in the rear.
Example 3, exteme parking lot stunting gears:
14 front, 70 rear = 1:5 ratio you get the point by now
Registered User
Joined: Mar 2003
Posts: 2,371
From: ma
Re: 1 down = ?
i agree with Kyle, well atleast -1 front is like +3 rear.. for yer 900 get a +5 will make some difference and when yer read ycan always do a -2 in the front and it'll be like a +10 rear for yer slow stuff..
Registered User
Joined: Aug 2004
Posts: 29
From: EDMONDS WA
Re: 1 down = ?
Not quite understanding you guys saying "going down 1 in front is LIKE going up 3 in the back"
Are you saying if you go down in the front, you have to change the rear spocket +3 ?
I have a stock 04 R6 and hear it's common for people to go down 1 in the front to a 15 tooth...are these guys changing out the rear as well? Or it's LIKE going up in the rear? A bit confused...
Are you saying if you go down in the front, you have to change the rear spocket +3 ?
I have a stock 04 R6 and hear it's common for people to go down 1 in the front to a 15 tooth...are these guys changing out the rear as well? Or it's LIKE going up in the rear? A bit confused...
Registered User
Joined: Jul 2003
Posts: 1,583
From: Minneapolis
Re: 1 down = ?
Originally Posted by bill parr
all very good points, but i have noticed you loose more rpms when you change the gearing on the countershaft as apposed to just going up in the rear...
Registered User
Joined: Jul 2003
Posts: 1,583
From: Minneapolis
Re: 1 down = ?
Originally Posted by Truth
Not quite understanding you guys saying "going down 1 in front is LIKE going up 3 in the back"
Are you saying if you go down in the front, you have to change the rear spocket +3 ?
Are you saying if you go down in the front, you have to change the rear spocket +3 ?
"like" means there is a comparison of two different scenarios 
I Enjoy Posting At StuntLife!
Joined: Jul 2003
Posts: 2,842
From: New Orleans
Re: 1 down = ?
someone answer this for me just a simple YES or NO i dont really want an explaination just yes or no
if you have two of the same bikes but one bike you go -1 in front and the other you go +3 in rear is the power and everything the same???
if you have two of the same bikes but one bike you go -1 in front and the other you go +3 in rear is the power and everything the same???
Thread Starter
Registered User
Joined: Nov 2003
Posts: 373
From: RACINE, WI
Re: 1 down = ?
Originally Posted by movistargixxer6
someone answer this for me just a simple YES or NO i dont really want an explaination just yes or no
if you have two of the same bikes but one bike you go -1 in front and the other you go +3 in rear is the power and everything the same???
if you have two of the same bikes but one bike you go -1 in front and the other you go +3 in rear is the power and everything the same???
www.sicriders.com
Joined: Mar 2003
Posts: 784
From: San Diego, CA
Re: 1 down = ?
i disagree....here's my
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
example 1: if you were to leave stock rear sprocket and only go down 2 in the front, it would not be equal to going up 6 in the rear.- your top speed would stay very high, but there would be alot more torque from the engine making wheelies easier and making the bike much faster off the line.
example 2: if you were to leave the front stock and go up 6 in the rear, again it would not give you equal results to 2 down in front.- your top speed will reduce because the wheel cannot rotate as fast anymore and the rpm at which your powerband kicks in will be reached at a slower travel speed.
either way or a combination of the two ways will make wheelies easier, but i belive that they yeild different effects/results.
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
example 1: if you were to leave stock rear sprocket and only go down 2 in the front, it would not be equal to going up 6 in the rear.- your top speed would stay very high, but there would be alot more torque from the engine making wheelies easier and making the bike much faster off the line.
example 2: if you were to leave the front stock and go up 6 in the rear, again it would not give you equal results to 2 down in front.- your top speed will reduce because the wheel cannot rotate as fast anymore and the rpm at which your powerband kicks in will be reached at a slower travel speed.
either way or a combination of the two ways will make wheelies easier, but i belive that they yeild different effects/results.
Thread Starter
Registered User
Joined: Nov 2003
Posts: 373
From: RACINE, WI
Re: 1 down = ?
Originally Posted by SIC GSXR
i disagree....here's my
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
example 1: if you were to leave stock rear sprocket and only go down 2 in the front, it would not be equal to going up 6 in the rear.- your top speed would stay very high, but there would be alot more torque from the engine making wheelies easier and making the bike much faster off the line.
example 2: if you were to leave the front stock and go up 6 in the rear, again it would not give you equal results to 2 down in front.- your top speed will reduce because the wheel cannot rotate as fast anymore and the rpm at which your powerband kicks in will be reached at a slower travel speed.
either way or a combination of the two ways will make wheelies easier, but i belive that they yeild different effects/results.
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
example 1: if you were to leave stock rear sprocket and only go down 2 in the front, it would not be equal to going up 6 in the rear.- your top speed would stay very high, but there would be alot more torque from the engine making wheelies easier and making the bike much faster off the line.
example 2: if you were to leave the front stock and go up 6 in the rear, again it would not give you equal results to 2 down in front.- your top speed will reduce because the wheel cannot rotate as fast anymore and the rpm at which your powerband kicks in will be reached at a slower travel speed.
either way or a combination of the two ways will make wheelies easier, but i belive that they yeild different effects/results.
heres my
for some reason 1 down on 900 RR dident do much for me ,but when i went up 3 on my gsxr it made the world of diff . i know there 2 diff bikes but why did it seem like that for me with 3 up on gsxr i could gas it up in 3rd , on my 900 i have a hard time geting it up in 2nd with the one down . Registered User
Joined: Jul 2003
Posts: 1,583
From: Minneapolis
Re: 1 down = ?
Originally Posted by SIC GSXR
i disagree....here's my
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
.
although the ratio may be the same,
a smaller front sprocket will increase torque.
a larger rear sprocket will cause the wheel to rotate at a slower speed and lower the speed at which the engine's powerband starts.
.
The result of going up in the back and down in the front is the same damn thing like everyone else has been saying. Going down in the front slows the rear tire speed, thereby increasing the torque. Going up in the back also reduces the speed of the rear tire, thereby increases the torque. The only difference is that going down in the front puts more stress on the chain, sprockets, and countershaft. Oh, and there is also the 3:1 ratio difference. 
