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Qestion about valve spring

turbulence

Super Veteran
i see...paps, i have smx. so if i change to vixion valve spring and brt, what rpm that i can possibly reach?
smx has a low cam. U need to change that too bro. I'm not sure bro. My mc can hardly reach 10,500 rpm with sprocket combi 14x45 hehe. try using a tachometer
 

turbulence

Super Veteran
what are the disadvantages of a low cam paps? sorry i am a newbie about this.
base on our experience bro, low cam has a lower top end. For example, my mc 14x45 sprocket combi on vixion cam can go only 110kph on my 3rd gear while cms cams (has higher lift) can go 125kph on 3rd gear.
 

sniper31

Super Veteran
ADVANTAGE of low cam:
-easy to start the engine, low noise(no tiktak sound), fast accellaration, good for short distance., in 400m-500m is enough to know ur topspspeed, good for drag racing
DISADVANTAGE of low cams:
- no top end
For me i prepare a low cams
 

sniper31

Super Veteran
Changing ur cdi is useless! if u dont change ur cams, valve spring.These 3 things you must change at the same time... NO FLOAT AT all., or u need to do what TURBULENCE quoted..
 

MasterJAD

Super Veteran
Changing ur cdi is useless! if u dont change ur cams, valve spring.These 3 things you must change at the same time... NO FLOAT AT all., or u need to do what TURBULENCE quoted..
i have read from here (i forgot what thread it is) paps, the it is ok not to change cams...valve spring and rcdi will do.... hmmmmm quite confusing...
 

sniper31

Super Veteran
http://www.yamahat135.com/threads/moas-sniper31-3rd-gear-video-released.5110/
you can watcth here my 3 set up;
-rextor cdi
- vixion valve spring
- and rcams
my tire is 100x80R and 80x90F and my final gear is 15x39. And having backride, total kilos of 120kg. My videoman is my backride.
but now my set up is all secret. sori i cnt reveal. hehehe
only emcid_ubp knows....
sori for the video, some trial done and not so clear. i used a cp camera only. no money to buy a good camera.
 
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