Please Help About My Sprocket Combi

[janjan]

Good Day Members, I just want a little help about my Sprocket Combination. I read few moments ago these previous threads about Sprocket Combination Table, but I'm a bit confused.

I have Sniper Classic with 57 Vixion, 28mm Carbs, Lhk Cams and BRT Cdi but I'm still using a Stock Valve Spring.

My Sprocket Combination is 15 - 39. If you were in my position, what sprocket combination would you choose?.
My weight is 65 lbs.

I want good top speed. Thanks

Hope somebody/someone will help me

 

[jefplacido]

65lbs? almost 30kgs+?
or 65kgs
stock tires??
Front teeth | Rear teeth= Gear Ratio

16 34 = 2.125
15 32 = 2.13
16 35 = 2.19
15 33 = 2.20
16 36 = 2.25
15 34 = 2.26
14 32 = 2.28
16 37 = 2.31
15 35 = 2.33
14 33 = 2.35
16 38 = 2.38
15 36 = 2.4
14 34 = 2.42
16 39 = 2.44
15 37 = 2.47
16 40 = 2.5
14 35 = 2.5
15 38 = 2.53
16 41 = 2.56
14 36 = 2.57

15 39 = 2.6 Stock gear ratio

16 42 = 2.63
14 37 = 2.64
15 40 = 2.67
16 43 = 2.69
14 38 = 2.71
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79
15 42 = 2.8
16 45 = 2.81
14 40 = 2.86
15 43 = 2.87
16 46 = 2.88
14 41 = 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
14 42 = 3
15 46 = 3.07
14 43 = 3.07
14 44 = 3.14
14 45 = 3.21
14 46 = 3.29

so if you want more top speed than stock settings
use 14t front and 36t rear
or 16t front and 41t rear

if you want more acceleration
use 13t front and 34t rear
or 16t front and 42t rear

BIGGER TIRES (100/80 and up): use color red
SMALLER TIRES (80/80 and below): use color green

or try these bro trial and error

15 42 = 2.8

14 40 = 2.86

14 41 = 2.93

if you get better in 2.8 gear ratio then you should try one step lower from 2.8 like
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79

Now if on 14 41 = 2.93 you get better performance, then try higher than 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
IMHO credits to the owner

 

[BigBird]

65lbs? almost 30kgs+?
or 65kgs
stock tires??
Front teeth | Rear teeth= Gear Ratio

16 34 = 2.125
15 32 = 2.13
16 35 = 2.19
15 33 = 2.20
16 36 = 2.25
15 34 = 2.26
14 32 = 2.28
16 37 = 2.31
15 35 = 2.33
14 33 = 2.35
16 38 = 2.38
15 36 = 2.4
14 34 = 2.42
16 39 = 2.44
15 37 = 2.47
16 40 = 2.5
14 35 = 2.5
15 38 = 2.53
16 41 = 2.56
14 36 = 2.57

15 39 = 2.6 Stock gear ratio

16 42 = 2.63
14 37 = 2.64
15 40 = 2.67
16 43 = 2.69
14 38 = 2.71
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79
15 42 = 2.8
16 45 = 2.81
14 40 = 2.86
15 43 = 2.87
16 46 = 2.88
14 41 = 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
14 42 = 3
15 46 = 3.07
14 43 = 3.07
14 44 = 3.14
14 45 = 3.21
14 46 = 3.29

so if you want more top speed than stock settings
use 14t front and 36t rear
or 16t front and 41t rear

if you want more acceleration
use 13t front and 34t rear
or 16t front and 42t rear

BIGGER TIRES (100/80 and up): use color red
SMALLER TIRES (80/80 and below): use color green

or try these bro trial and error

15 42 = 2.8

14 40 = 2.86

14 41 = 2.93

if you get better in 2.8 gear ratio then you should try one step lower from 2.8 like
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79

Now if on 14 41 = 2.93 you get better performance, then try higher than 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
IMHO credits to the owner

 

[janjan]

65lbs? almost 30kgs+?
or 65kgs
stock tires??
Front teeth | Rear teeth= Gear Ratio

16 34 = 2.125
15 32 = 2.13
16 35 = 2.19
15 33 = 2.20
16 36 = 2.25
15 34 = 2.26
14 32 = 2.28
16 37 = 2.31
15 35 = 2.33
14 33 = 2.35
16 38 = 2.38
15 36 = 2.4
14 34 = 2.42
16 39 = 2.44
15 37 = 2.47
16 40 = 2.5
14 35 = 2.5
15 38 = 2.53
16 41 = 2.56
14 36 = 2.57

15 39 = 2.6 Stock gear ratio

16 42 = 2.63
14 37 = 2.64
15 40 = 2.67
16 43 = 2.69
14 38 = 2.71
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79
15 42 = 2.8
16 45 = 2.81
14 40 = 2.86
15 43 = 2.87
16 46 = 2.88
14 41 = 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
14 42 = 3
15 46 = 3.07
14 43 = 3.07
14 44 = 3.14
14 45 = 3.21
14 46 = 3.29

so if you want more top speed than stock settings
use 14t front and 36t rear
or 16t front and 41t rear

if you want more acceleration
use 13t front and 34t rear
or 16t front and 42t rear

BIGGER TIRES (100/80 and up): use color red
SMALLER TIRES (80/80 and below): use color green

or try these bro trial and error

15 42 = 2.8

14 40 = 2.86

14 41 = 2.93

if you get better in 2.8 gear ratio then you should try one step lower from 2.8 like
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79

Now if on 14 41 = 2.93 you get better performance, then try higher than 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
IMHO credits to the owner

My tire size are
Front 60/80 . Rear 70/80

 

[Gerry Jaloro]

change your valve spring first to avoid valve float...
15-42 & 15-40...

 

[jangbest]

Your lucky that your engine was not exploded ....
Change your valve spring first .. then do your sprocket combi trials .....

 

[janjan]

Your lucky that your engine was not exploded ....
Change your valve spring first .. then do your sprocket combi trials .....

Why it will explode sir?. My 15 / 39 sprocket is bad?.

 

[ESOJ de GUZMAN JR]

its not the sprocket combi. but over rev without replacing stock valve spring. kissing of valve and piston. un sabog ang mangyari sa over rev. 10k lng max rpm ng stock. nka rcdi ka pa man din.

 

[janjan]

its not the sprocket combi. but over rev without replacing stock valve spring. kissing of valve and piston. un sabog ang mangyari sa over rev. 10k lng max rpm ng stock. nka rcdi ka pa man din.

So if I will use Aftermarket Valve Spring, It will not Valve Float even on high RPM's?.

Im using now RCDI but Stock V. Springs. and I'm really confused about my Sprocket Combi. hehe

 

[jangbest]

its not the sprocket combi. but over rev without replacing stock valve spring. kissing of valve and piston. un sabog ang mangyari sa over rev. 10k lng max rpm ng stock. nka rcdi ka pa man din.

He`s right ts ...

 

[ESOJ de GUZMAN JR]

Why it will explode sir?. My 15 / 39 sprocket is bad?.

on your weight sir. 15-42 will be the best combi for you. sir ngupgrade ka ng motor mo. bakit d man lng ba sinabi ng mechanic mo na mgpalit ka ng ganito, magpalit ka ng ganyan. afterwards mgtanong ka sa knya. bkt kelangan papalitan. kng marunong sya masasagot nya un. kagaya nyan naikabit na lahat lahat tpos d ka pla ngpalit ng v.s mo. bubuksan ulit head ng mc mo. d bale may problema ka ata d ba. nabasa ko sa kabilang thread. ung black smoke. double check nlng kng san nanggagaling un. good luck.

 

[jangbest]

on your weight sir. 15-42 will be the best combi for you. sir ngupgrade ka ng motor mo. bakit d man lng ba sinabi ng mechanic mo na mgpalit ka ng ganito, magpalit ka ng ganyan. afterwards mgtanong ka sa knya. bkt kelangan papalitan. kng marunong sya masasagot nya un. kagaya nyan naikabit na lahat lahat tpos d ka pla ngpalit ng v.s mo. bubuksan ulit head ng mc mo. d bale may problema ka ata d ba. nabasa ko sa kabilang thread. ung black smoke. double check nlng kng san nanggagaling un. good luck.

baka di masyadong kabisadi ng mekaniko nya ang MC nya, tsk tsk tsk .....
sakit sa ulo nyan pag nagkataon sana hindi naman .... gud luck @janjan

 

[jangbest]

saan ba location mo @janjan Ts

 

[janjan]

saan ba location mo @janjan Ts

Cebu ako sir.

 

[jangbest]

Cebu ako sir.

layo pala ...

 

[janjan]

layo pala ...

Oo nga malayo Cge lang sir, I'll just post a thread if ever I encounter some problems with my MC , because I know people here are so helpful. Thanks to you @jangbest and @ESOJ de GUZMAN JR

God Bless and Ride Safe

 

[janjan]

65lbs? almost 30kgs+?
or 65kgs
stock tires??
Front teeth | Rear teeth= Gear Ratio

16 34 = 2.125
15 32 = 2.13
16 35 = 2.19
15 33 = 2.20
16 36 = 2.25
15 34 = 2.26
14 32 = 2.28
16 37 = 2.31
15 35 = 2.33
14 33 = 2.35
16 38 = 2.38
15 36 = 2.4
14 34 = 2.42
16 39 = 2.44
15 37 = 2.47
16 40 = 2.5
14 35 = 2.5
15 38 = 2.53
16 41 = 2.56
14 36 = 2.57

15 39 = 2.6 Stock gear ratio

16 42 = 2.63
14 37 = 2.64
15 40 = 2.67
16 43 = 2.69
14 38 = 2.71
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79
15 42 = 2.8
16 45 = 2.81
14 40 = 2.86
15 43 = 2.87
16 46 = 2.88
14 41 = 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
14 42 = 3
15 46 = 3.07
14 43 = 3.07
14 44 = 3.14
14 45 = 3.21
14 46 = 3.29

so if you want more top speed than stock settings
use 14t front and 36t rear
or 16t front and 41t rear

if you want more acceleration
use 13t front and 34t rear
or 16t front and 42t rear

BIGGER TIRES (100/80 and up): use color red
SMALLER TIRES (80/80 and below): use color green

or try these bro trial and error

15 42 = 2.8

14 40 = 2.86

14 41 = 2.93

if you get better in 2.8 gear ratio then you should try one step lower from 2.8 like
15 41 = 2.73
16 44 = 2.75
14 39 = 2.79

Now if on 14 41 = 2.93 you get better performance, then try higher than 2.93
15 44 = 2.93
16 47 = 2.94
15 45 = 3
IMHO credits to the owner

Can somebody link me the original post of this kind of table? I think @traxxas-modifier post this. I can't fint the thread. TIA

 

[ESOJ de GUZMAN JR]

baka di masyadong kabisadi ng mekaniko nya ang MC nya, tsk tsk tsk .....
sakit sa ulo nyan pag nagkataon sana hindi naman .... gud luck @janjan

dapat pla tnanong nya ano ang master piece ng mekaniko.. kng raider kabisado nyan... patay kalaban ng sniper yan. hahah.

 

[ESOJ de GUZMAN JR]

Oo nga malayo Cge lang sir, I'll just post a thread if ever I encounter some problems with my MC , because I know people here are so helpful. Thanks to you @jangbest and @ESOJ de GUZMAN JR

God Bless and Ride Safe

welcome sir. anytime.

 

[jefplacido]

Can somebody link me the original post of this kind of table? I think @traxxas-modifier post this. I can't fint the thread. TIA

http://www.yamahat135.com/threads/t135-sprocket-table-combination-part-ii.404/