T135 Sprocket Table Combination Part 2

[charge]

to charge: in sum ways i do feel our speedometers in s'pore r the same as urs in msia.if car drives 100kmh, my bike does feel like 90kmh uh coz i do drive alot n it feels different.i think all small bikes speedometer kinda "light" sumtimes.juz wat i think.

Your engine can rev up to around 11000rpm max, but the maximum horsepower happens around 10000rpm. Let's say you want to stay the RPM around 7500rpm on PLUS highway, please try 40-15. In 4th gear @ 7500rpm, you can travel around 120kph, and able to top about 160kph @ 10,000rpm.

Of course while using 40-15, you get more acceleration than stock sprocket. This means you can actually open less throttle to maintain 120kph --> save petrol.

 

[tsunami]

to charge: in sum ways i do feel our speedometers in s'pore r the same as urs in msia.if car drives 100kmh, my bike does feel like 90kmh uh coz i do drive alot n it feels different.i think all small bikes speedometer kinda "light" sumtimes.juz wat i think.

to tsunami:thanx bro.important advice for me.cant wait for the trip to happen.these few months im gonna test my bike around.thanx man~

welcome and goodluck man

 

[afterlife]

thanx charge n tsunami for all the useful advices.these 2 months i hav to really2 see carefully how my bike works n know deeply abt the bike.

 

[charge]

I've just changed to 15-42. Here's my experience:

1st gear initial acceleration is strong. Before this, 0 - 10kph lost to EX5 because EX5 has very short gears. Now, 0 - 10kph is as fast as EX5, but able to drag until ~40kph. My engine are stock.

Maintaining speed with 4th gear below 90kph is easy when going uphill. I only need 1/4 throttle. Last time I need 1/3 throttle. I believe this sprocket combo is good for urban riding and able to save more petrol.

max speed for each gear (urban riding):
1st - 40kph
2nd - slightly more than 70kph
3rd - slightly more than 100kph
4th - 120kph

From my estimations in page 3,
1st - 39kph
2nd - 73kph
3rd - 103kph
4th - 140kph


Well, 4th gear is not accurate, because after 120kph, my engine does not have enough power to rev up to maximum RPM. It stuck at around 8000RPM. During downhill, I am able to hit 130kph, but it is too scary to go faster on bumpy downhill......


Last time when using 15-39, there is not much torque felt from 2000 - 3000rpm / 8000rpm above. After changing to 15-42, 2000 - 8000rpm accelerates very well.
I found 135lcSS's 135LC has more power at high RPM compared to mine. Damn..I am not sure why my engine lost power after 7000rpm. Dunno if it is CDI or TPS settings problem.

 

[big poppa]

Im using 15/42 and tops only at 110kmh... I envy all of you guys... BTW, my odometer reads 1654 kms... maybe if i give it time hehehe I wish!

 

[tsunami]

try drop your sprocket to 15/40 or 41

 

[lc-motospeed]

tips from the masters plz i'm using 14/36 wif 415 chain n going more 4 top speed, n pick up, izzit ok 4 based on my mods?

 

[big poppa]

15/40, Ive tried it already but it was actually slower at he top end than my old combination. My tire size is 100/80 rear and 90/80 front by the way. It has an effect Im sure. thanks

 

[tsunami]

15/40, Ive tried it already but it was actually slower at he top end than my old combination. My tire size is 100/80 rear and 90/80 front by the way. It has an effect Im sure. thanks

owh thats why...so 15/42 is okays already

 

[tsunami]

tips from the masters plz i'm using 14/36 wif 415 chain n going more 4 top speed, n pick up, izzit ok 4 based on my mods?

tips is from your formen not other ppl...ask your formen okays

 

[lc-motospeed]

ok, thx then... my foreman said is ok but wif those hesitation looks in his face, haha

 

[big poppa]

ok Tsunami,, 15/42 is ok already huh? thanks.. 15/44? hahaha

 

[tsunami]

dont pain your bike by use 15/44 or 15/45
if wanna try 15/43 still okays coz i already use 15front with 36till 45rear

 

[big poppa]

ok tsunami.. thanks a lot.. I guess Ill stick with 15/42 for no.. 14/42 will it have a good effect or make my bike slower?

 

[tsunami]

14/42 your bike get more pickup but less acceleration for topspeed

 

[ghostrider]

so when i used t14 front t39 rear it only has accelerate..not top
speed

 

[tsunami]

so when i used t14 front t39 rear it only has accelerate..not top
speed

yes...no pain no gain

 

[stuff]

guys..i need help...
my bike now are fitted with 80/90 front and 90/80 rear...
my bike is heavy during accelaration and hard to archieve top speed...

i am using standard sprocket 15t front and 39t rear...
standard engine..

guys,
what sprocket combination should i use the best???

 

[traxxas-modifier]

so when i used t14 front t39 rear it only has accelerate..not top
speed

yes because your gear ratio using
14 39 = 2.79

thats 30/14 = 2.79

what you need is to use the gear ratio table
posted at the first page
http://www.yamahat135.com/forum/viewtopic.php?t=414


if you want top speed,
go the the next lower gear ratio to 2.6

that would be
16 41 = 2.56
14 36 = 2.57

 

[traxxas-modifier]

guys..i need help...
my bike now are fitted with 80/90 front and 90/80 rear...
my bike is heavy during accelaration and hard to archieve top speed...

i am using standard sprocket 15t front and 39t rear...
standard engine..

guys,
what sprocket combination should i use the best???

since you have bigger tires, it will have hard time on accelerating.
you need a gear ration HIGHER than 2.6

from gear ratio tables in page1

13 34 = 2.62
16 42 = 2.63
14 37 = 2.64
15 40 = 2.67

go one step at a time to see which one fits well with your new tire.