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Sprocket Value Computation

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naije82

New Member
ooo,..
thanks goff...u help me alot...for now i really like top speed...just :? :? :? if using big sprocket n big tyre cant get de top speed again..

i have 2 use 415 chain coz have problem with my aloi arm...i already traveling using dis chain almost 900 km...after traveling have 2 change new set for sprocket...

ok gof thanks
 

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fibercraft

fibercraft

Super Veteran
ei guys.......iv change my sniper front tire 80/90 and 100/90 at the rear part using racing boy mags.....im planning to keep my engine as stock as it is........wat wud u suggest the best sprocket combination i shud get for my bike?......im using SSS 15/42t 415 sprocket for a while now but since iv had my tires big....i cnt feel the speed as usual nemore........any idea on wat is the best way to do?????
 
J

jay.e.l

Super Veteran
traxx what is the best for a 80/80 front,100/80 rear. I want good topspeed and a good acceleration as well plz
 
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justkir

Super Veteran
guys, previously with the 60.5mm piston 80/90 tires for front and rear...
i have been using 15/35 428

currently my bike used 60mm piston with 90/80 tires front and rear, 125 rear disk brake set...
so i used bigger sprocket 15-37 428...

what i feel now, the engine sounds over rev, but the speed increased than before... is it safe to continue using the bigger sprocket? how to differentiate good over rev and bad over rev?
 
N

nic91061

New Member
best sprox combi

I'm 180lbs, stock sprox combi, 90/80x17 rear tire, what you guys suggest to increase top speed from 120kph. Usually ride on long flat and hilly bend

thanks bros
 
inspire

inspire

New Member
Hi guys,
Here's our stock gear ratio

Secondary(Drive)/Primary(Main): Ratio

1st 34/12 : 2.833
2nd 30/16 : 1.875
3rd 23/17 : 1.353
4th 23/22 : 1.045

Aftermarket
1st 32/12 : 2.667
2nd 29/16 : 1.813
3rd 23/17 -1.353
4th 23/21 : 1.095

When compared side by side;
2.833 vs 2.667 - higher
1.875 vs 1.813 - higher
1.353 vs 1.353 - same
1.045 vs 1.095 - smaller

Meaning the 1,2,4 kits are close ratio for sprints.
You can pull longer in 1st gear, 2nd will be bring you very close to 3rd, 4th will continue your momentum from 3rd cuz ratio being very close. Honestly, this setup is for small to medium corners, you can even whack your 4th gear on fast corners while rear tires still wobbling. Mind you, this is with 15-36 sprockets, 90-80 TT9 LP's. :D
And I'm 77 kilos.
 
K

kurarensu

Veteran
i using faiko 415 chain n sprocket (F15/R49)

i wanna play pickup changing to 15/42 but i dont know what will be the cruising speed at highway be like..

and 415 chain not good for pickup due to the stress on the chain.. right??


pls advice thanks!!
 
R

rumahmayat

New Member
i hav read the spoket combination in forum...but still blurr...
i need advise...

here is my mods condition...:

sproket 15/37 415
cdi rcing BRT
airfilter JFC
front tyre 70/90 rear 80/90
engine oil selenia linx 15w50
(other than above is juz stock)

riders weight:68kg

1st gear: 50KM/H
2nd gear: 90KM/H
3rd gear: 130KM/H
4th gear: 150KM/H (but takes so loonggg to get to 150)

i still did not get the top speed(180KM/H)...i think its my sproket probs coz my 4th gear like the third gear...takes so much time to get to 150...before this im using the stock (15/39) with stock cdi its juz takes a second to reach 150 after i change to 4th gear...and i planned to chnge my front tyre (80/90) and sproket after this...so in ur opinion..what is the best combination 4 me..???im new 4 this i have to learn a lot...hope sum1 can help me ...thanks..
 
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