tri-z ?

[rodsandmore]

recently purchased tri-z. don't understand boost bottle. what does it do? NOT sure if this is in right forum or not

[tri-shee]

It does nothing for the bike . When i had my z i removed it and installed a custom cap on the intake boot .

[Mrs.Mosh]

recently purchased tri-z. don't understand boost bottle. what does it do? NOT sure if this is in right forum or not

:welcome: to the forum.

I moved this thread to Trikesylvania.
This is where most technical trike questions belong.

As far as your boost bottle question, My husband has owned a few Tri-Z's.
He always said that when he removed the boost bottle, he noticed a slight loss of bottom end torque.

You will get different opinions on the boost bottle theory though.

[clutchcargo]

It's supposed to help with bottom end power. It wouldn't hurt it if you took it off, but make sure you plug the hole on the intake. Personally, I would just leave it on and ride it.

[Yamahondaman]

:welcome: to the forum.
As far as your boost bottle question, My husband has owned a few Tri-Z's.
He always said that when he removed the boost bottle, he noticed a slight loss of bottom end torque.

You will get different opinions on the boost bottle theory though.

Agreed with the Mrs........
back in 1986 took it off and it did NOT like it but........ it did like the hose 3/4" shorter
i have tried them on the ATC's and they did not like it.. it seem's like the TRI-Z kinda need's that thing.......
it is supposed to keep the back flow Carb. "Charge" and store it in the bottle.... once the throttle is let up from whoop's or Top end and then Stabbed .. it uses the Bottle Charge....
it's hard to explain unless you have had ALL of the bikes from 1969-2008..
YES i have play'd with the Montesa,Hodaka,Bultaco,Maico,Yami,Honda,Ossa,ETC.
Leave the Bottle on the TRI-Z

[tri-Z ripper]

Done and Done if you tell me coming from the man himself!

[Shawn72]

This is Yamaha's theory of the boost bottle.

Boost Bottle theory is that the boost/equalizer /tube/bottle is a passageway between intake manifolds with a fixed volume, usually the CC of one cylinder or larger, a (momentary) storage container for pre-atomized fuel/air mixture. Since the fuel/air mixture is at a high velocity while traveling through the intake manifold, guess what happens when the reeds suddenly close? The mixture has inertia and physics would suggest the fuel/air mixture has to dissipate this inertia, through a tube maybe? This inertia (pulse) forces the pre-atomized mixture that’s already in the tube from the previous cycle into the next intake manifold that’s reeds are just opening and ready to receive the fuel/air mixture, this is like a little supercharger to each cycle. This all happens so fast at higher rpm’s that it is most effective at lower and mid-range where you are on/off throttle. It takes venturi velocity to atomize the raw fuel from the main jets. The tube/bottle has a charge of pre-atomized fuel that is instantly ready when you go from off to on throttle. It assists in filling the cylinder for a fraction of a second until the carburetor venturi gets enough velocity to fully atomize the available fuel. The advantage is that it brings up the torque and horsepower sooner in the bottom of the rpm range. These have been Dyno tested and proven to work, they show 10hp low end, 4hp at mid rpm, and a 2 hp increase on top end.