[Group] SBF Yamaha Spark135

[eddictive]

Hari raya dah abis perr....

Anyways if switch to normal outing also I can't join you guys coz on Wednesday I will be flying to China for 2 weeks to do a UN meeting... Hehehe... I have waited for an overseas job for awhile... Enjoy guys....

[Mr. Jones]

hey bro, wanna know roughly how much does a second hand spark machine price cost?

 

I scared kena carrot uh.. just wanna get a rough idea when surveying shops

[mute.rabbi]

So Which Shop Quoted You $600?

 

its along defu lane 10 blk 5, the one wth red signboard one..cant remember the name

[mute.rabbi]

hey bro, wanna know roughly how much does a second hand spark machine price cost?

 

I scared kena carrot uh.. just wanna get a rough idea when surveying shops

 

the last one i check was 2.8k all standard

[IdaaNdi]

Guys those using aftermarket carbs... any set up recommendations for an aftermarket air filter that can fit replacing the stock airbox?

 

And the aluminium funnel for air intake how does it work? velocity stack? Hope the pros can share ur 2cents... thanks.

[h4hahak1m]

Guys those using aftermarket carbs... any set up recommendations for an aftermarket air filter that can fit replacing the stock airbox?

 

And the aluminium funnel for air intake how does it work? velocity stack? Hope the pros can share ur 2cents... thanks.

 

That aluminium funnel or "velocity stack" u see attached to a carburetor is to create a venturi effect. Mostly all carburetors have that bell shaped thingy at the end and the "velocity stack" i just to extend it. The Venturi effect is a case where the air flows through a tube that narrows. The velocity of the fluid increases as it flows through the narrower tube while the pressure decreases, due to conservation of energy. The effect is an example of Bernoulli's principle.

 

What is bernoulli's principle? It is Bernoulli's principle is a concept of fluid dynamics. It says that when an incompressible fluid moves through different sizes of tube, the fluid's speed changes. This change in velocity is called "acceleration". Newton showed that acceleration only occurs through the action of a force. When a force acts over an area, it is called "pressure". So any change in a fluid's speed must be matched by a change in pressure (force). Bernoulli saw that the speed of the flow went up in the smaller part of the tube while the pressure on the side of the tube went down.

Basically the Bernoulli principle says that as speed of the fluid increases, pressure decreases. The air in the big part of the tube has a higher static pressure than the thin part.

 

So what it does it kind of "compacts" the air because in this case, the air drawn from carbs is not force induced, meaning it is not force fed in. Instead, the carb draws air from the atmosphere and what the venturi effect does is to squeeze that air into the carb. It's kinda like supercharging, but the length and diameter/size of the venturi will affect your performance, whether low, mid or high range. What size affects where? Don't ask me. I'm not the r&d department.

 

It's the opposite of what an airbox does. What an airbox does is to keep a steady supply of air and to keep air velocity into the carbs down. This means from 0% throttle, the carbs will get air because there is a steady supply of air from the airbox. Think of it as a reservoir for air. Of course for higher end power, the airbox becomes too restrictive most of the time.

 

So the moral of the story here is to get rid of the idea of "take out airbox for more pickup" because it is seriously not true. Why that happens is when you take the airbox out, your low end power decreases, so you throttle more, thus your "pickup power" increases.

 

End of the day, it still boils down to your wrist control and proper jetting to maximise fuel efficiency. Sorry for the bad english. I'm damn tired

[Lim Ah Wan]

That aluminium funnel or "velocity stack" u see attached to a carburetor is to create a venturi effect. Mostly all carburetors have that bell shaped thingy at the end and the "velocity stack" i just to extend it. The Venturi effect is a case where the air flows through a tube that narrows. The velocity of the fluid increases as it flows through the narrower tube while the pressure decreases, due to conservation of energy. The effect is an example of Bernoulli's principle.

 

What is bernoulli's principle? It is Bernoulli's principle is a concept of fluid dynamics. It says that when an incompressible fluid moves through different sizes of tube, the fluid's speed changes. This change in velocity is called "acceleration". Newton showed that acceleration only occurs through the action of a force. When a force acts over an area, it is called "pressure". So any change in a fluid's speed must be matched by a change in pressure (force). Bernoulli saw that the speed of the flow went up in the smaller part of the tube while the pressure on the side of the tube went down.

Basically the Bernoulli principle says that as speed of the fluid increases, pressure decreases. The air in the big part of the tube has a higher static pressure than the thin part.

 

So what it does it kind of "compacts" the air because in this case, the air drawn from carbs is not force induced, meaning it is not force fed in. Instead, the carb draws air from the atmosphere and what the venturi effect does is to squeeze that air into the carb. It's kinda like supercharging, but the length and diameter/size of the venturi will affect your performance, whether low, mid or high range. What size affects where? Don't ask me. I'm not the r&d department.

 

It's the opposite of what an airbox does. What an airbox does is to keep a steady supply of air and to keep air velocity into the carbs down. This means from 0% throttle, the carbs will get air because there is a steady supply of air from the airbox. Think of it as a reservoir for air. Of course for higher end power, the airbox becomes too restrictive most of the time.

 

So the moral of the story here is to get rid of the idea of "take out airbox for more pickup" because it is seriously not true. Why that happens is when you take the airbox out, your low end power decreases, so you throttle more, thus your "pickup power" increases.

 

End of the day, it still boils down to your wrist control and proper jetting to maximise fuel efficiency. Sorry for the bad english. I'm damn tired

 

Woaaahh?? English Please? Hahaha! Tak Paham Terus.

[kguanz]

Hi peeps, new spark rider over here. What are the normal maintenance for spark and how long do i have to do it? used to be a SP rider but i think spark is more economic in sg.

[AzzrulSally]

Hey guys. I wanna ask, whenever my bike reaches 100km/h, it makes this ringing sound. Only when it exceeds 100. Anyone knows why? Help much appreciated.

[duo]

Hari raya dah abis perr....

Anyways if switch to normal outing also I can't join you guys coz on Wednesday I will be flying to China for 2 weeks to do a UN meeting... Hehehe... I have waited for an overseas job for awhile... Enjoy guys....

Have a safe trip. I always wanted an overseas job.

 

Guys those using aftermarket carbs... any set up recommendations for an aftermarket air filter that can fit replacing the stock airbox?

 

And the aluminium funnel for air intake how does it work? velocity stack? Hope the pros can share ur 2cents... thanks.

Someone got new carb?

 

That aluminium funnel or "velocity stack" u see attached to a carburetor is to create a venturi effect. Mostly all carburetors have that bell shaped thingy at the end and the "velocity stack" i just to extend it. The Venturi effect is a case where the air flows through a tube that narrows. The velocity of the fluid increases as it flows through the narrower tube while the pressure decreases, due to conservation of energy. The effect is an example of Bernoulli's principle.

 

What is bernoulli's principle? It is Bernoulli's principle is a concept of fluid dynamics. It says that when an incompressible fluid moves through different sizes of tube, the fluid's speed changes. This change in velocity is called "acceleration". Newton showed that acceleration only occurs through the action of a force. When a force acts over an area, it is called "pressure". So any change in a fluid's speed must be matched by a change in pressure (force). Bernoulli saw that the speed of the flow went up in the smaller part of the tube while the pressure on the side of the tube went down.

Basically the Bernoulli principle says that as speed of the fluid increases, pressure decreases. The air in the big part of the tube has a higher static pressure than the thin part.

 

So what it does it kind of "compacts" the air because in this case, the air drawn from carbs is not force induced, meaning it is not force fed in. Instead, the carb draws air from the atmosphere and what the venturi effect does is to squeeze that air into the carb. It's kinda like supercharging, but the length and diameter/size of the venturi will affect your performance, whether low, mid or high range. What size affects where? Don't ask me. I'm not the r&d department.

 

It's the opposite of what an airbox does. What an airbox does is to keep a steady supply of air and to keep air velocity into the carbs down. This means from 0% throttle, the carbs will get air because there is a steady supply of air from the airbox. Think of it as a reservoir for air. Of course for higher end power, the airbox becomes too restrictive most of the time.

 

So the moral of the story here is to get rid of the idea of "take out airbox for more pickup" because it is seriously not true. Why that happens is when you take the airbox out, your low end power decreases, so you throttle more, thus your "pickup power" increases.

 

End of the day, it still boils down to your wrist control and proper jetting to maximise fuel efficiency. Sorry for the bad english. I'm damn tired

The Bernoulli and Newton. Like straight from textbook.

 

Woaaahh?? English Please? Hahaha! Tak Paham Terus.

You need the layman's terms.

 

Hey guys. I wanna ask, whenever my bike reaches 100km/h, it makes this ringing sound. Only when it exceeds 100. Anyone knows why? Help much appreciated.

Your bike is equipped with that restrictor thingy usually instaled on vans. When it exceeds a certain speed it will ring! Edited September 28, 2010 by duo

[IdaaNdi]

wa hakim your england so chim... any difference using the stacks on cubs? what if the stacks installed inside an airbox?

 

Your bike is equipped with that restrictor thingy usually instaled on vans. When it exceeds a certain speed it will ring!

 

His bike muz paste the speed limit sticker at the rear mudguard already.

[duo]

His bike muz paste the speed limit sticker at the rear mudguard already.

I know someone who have that. 240km/h!

[AzzrulSally]

Hahaha! might as well install power card so i wont exceed. hehe!

[AzzrulSally]

Your bike is equipped with that restrictor thingy usually instaled on vans. When it exceeds a certain speed it will ring!

 

Hahaha! might as well replace with power card so i wont exceed. hehe.

[Lim Ah Wan]

Its power CUT not power CARD.

 

Powercard is what you use when u play pokemon or digimon cards. Huahuahua.

[AzzrulSally]

Its power CUT not power CARD.

 

Powercard is what you use when u play pokemon or digimon cards. Huahuahua.

 

Oppss! hahaha! sorry.

[duo]

Hahaha! might as well replace with power card so i wont exceed. hehe.

http://lux1200.files.wordpress.com/2009/11/gary-card.jpg

 

On a serious note. Its already "installed" on your bike. You cannot exceed a certain limit. Try it.

[kguanz]

What's the normal maintenance we need to do for spark? newbie over here. Hope some kind soul can advice.

[rudi1986]

engine oil / spark plug ...dats it.. lol... n check coolant once in a while...

[IdaaNdi]

dun forget oil filter after every alternate engine oil change... N air filter ard every 10 000km??

[eddictive]

dun forget oil filter after every alternate engine oil change... N air filter ard every 10 000km??

 

Hehehe.... What air filter??? Our bike got air filter ah??? Hehehe .... Greetings from Tianjin.....

[rudi1986]

our bike only use air-con filter... thats why its cool riding sparkz...

[mute.rabbi]

fellow sparkers..wheres the best to place to do full service of our bike? and if possible cheap also lah.. i need to find a permanent workshop that i can frequent ..east area please

[Lim Ah Wan]

To All The Brothers Who Got Their

Koso Meters From Me

I Have Good News For You Guys.

 

The Water Temperature Sensor Kit Has Arrived.

I Have Fixed It Already.

 

SMS Me For The Price If You Want It.

 

[IdaaNdi]

Hehehe.... What air filter??? Our bike got air filter ah??? Hehehe .... Greetings from Tianjin.....

haha... how often do you travel? seems like a cool job..

 

To All The Brothers Who Got Their

Koso Meters From Me

I Have Good News For You Guys.

 

The Water Temperature Sensor Kit Has Arrived.

I Have Fixed It Already.

 

SMS Me For The Price If You Want It.

 

 

How muchie? I wan I wan..

Edited September 29, 2010 by IdaaNdi