so no real tuner have boost bottle? really

Re: so no real tuner have boost bottle? really

Boost - Bottle Polini

Re: so no real tuner have boost bottle? really

Re: so no real tuner have boost bottle? really

John Joedicke /

bp

Re: so no real tuner have boost bottle? really

I thought boost bottles were nearly completely ineffective on a reed valve based engine, due to the reeds being closed when the bottle is supposed to be doing its thing. Makes sense to me that you would have to place the tap for the bottle somewhere in the case, before the reeds?

Re: so no real tuner have boost bottle? really

i've seen them in pics of some super mobys in france but it's definatly not popular.

curiouse to actually try one on my shitty bike it has a bogging problem when u first give it gas

Re: so no real tuner have boost bottle? really

i think what it comes down to is, there are a lot of other things you could do for your engine that take the same ammount of time and money that give you better results.

also they have a bad reputation because of all the junk uncalculated ones.

Re: so no real tuner have boost bottle? really

also it's like having nitrous on an import...all that fast and furious shit gave the REAL import racing scene a bad name. why the hell would you need it if your car is already fast? bottle and quick fixes scorch your internals

Cory

Re: so no real tuner have boost bottle? really

cory. a boost bottle doesnt actually have any substance in it. its just a chamber thats supposed to compensate for lean spots when gunning the throttle... i believe... its quite hard to understand

Re: so no real tuner have boost bottle? really

also sam, whoever made that pink bike is a dumbass with a lot of money.

he bought the most expensive parts, HPI (300$) and a Jolly Moto exhaust (400$) and just bolted them on. the jolly moto is hand designed and has specific thickness metal in certain areas, specifically tuned for heat dispertion. i mean serious thought and tuning go into this.

and what does that jackhole do? he heatwraps the header. thats for 4 stroke tuning. so yes,

no real tuners have boost bottles lol.

Re: so no real tuner have boost bottle? really

Boost Bottle = Nothing.

Re: so no real tuner have boost bottle? really

dont tell this guy: pocket bike forum break>

"Boost bottles do work, but even the pipe length between the manifold and the bottle is critical. If the pipe is too long or too short then the reflected pulse will be out of time with the opening of the reeds so some experimentation would be needed.

Two stroke engines are very sensitive to small things like volume or length changes. Think of it like a musical instument like a trombone, slide a trombone's slide out making it longer makes a lower sound, slide it in making the pipe shorter makes a higher sound. Longer intake manifolds and exhausts are tuned to lower speeds and shorter manifold and pipes to higher speeds. This is where the word TUNING comes from. This is also why 2 stroke motors have a power band, when you reach the speed when these things come into tune the motor sings. If you get everything just right (right pipe, right porting, right carb/air filter) everything sings together and you get that lovely power band that i love about 2 strokes. Adding a boost bottle just adds another factor that you've got to get right or you will loose power. So best just stick with a good carb and pipe, have your barrel ported and get some 1.5 clutch springs. Now we're doing wheelies.

PS If you do decided to fit the bottle it is supposed to be connected between the carb and the reeds, not to the crancase or you will just increase the volume of the crancase = less power for sure. Think about it , piston comes down compressing the mixture in the crancase until the transfers are uncovered, the less space there is, the more compressed the mixture is the faster the gas will flow up the transfers."

Re: so no real tuner have boost bottle? really

Matt Scout The Scouting Dcon /

This thing goes like, 350 miles per hour!!!1!!eleven!!!

Re: so no real tuner have boost bottle? really

I thought boost bottles were nearly completely ineffective on a reed valve based engine, due to the reeds being closed when the bottle is supposed to be doing its thing. Makes sense to me that you would have to place the tap for the bottle somewhere in the case, before the reeds?

can anyone confirm this?

Re: so no real tuner have boost bottle? really

peter i don't think the reeds ever really "close" thats why you need heavier reed material for higher rpms to make sure they don't float open too far

even when i look at some reeds in front of me they never are completely sealed off and at the rate they move i'm sure it almost never happens.

ride a bike with a busted or worn reed if its not too bad it will function in the same manner as having a small air leak, less lowend and feeling lean but not.

as for the bottles, i'll leave it to the "real tuners", pocket bike guys, i think a good carb will do the same thing for the most part.

Re: so no real tuner have boost bottle? really

so do thik its better to open ur reeds more ( the metal flap behind them) or just keep it at like 1cm or how ever they come, for example a tomos reed, stock and or airsal.

-Samz

its a totally differnt question, nothign to do with the bottle

Re: so no real tuner have boost bottle? really

i think it really depends on your setup, flat reed? or pyramid? what thickness and quality of reed are you using. Also if you pull it up too much the reeds may never close or even snap due to too much travel.

i would think more travel = better throttle responce and maybe lowend, but more likey not to close enough at higher rpms

i think yes on a flat reed setup like a tomos the angle of metal or amount of travel the reeds have will make a difference, as to whats better, anything you do to make a part of your power band better will adversly effect another part for the most part.

go try some shit till u break it, thats what i'd do.

i've heard alot of talk about this stuff reguarding advanced scooter tuning but haven't really tried messing with it much myself, the bike is pretty good right now, if anything i may want to make heavier reeds so they snap back sooner so my top end gets a little boost, without messing with the amount they open when fully extended.

well at least thats the theory haven't tried any of this so don't take it as solid info.

Re: so no real tuner have boost bottle? really

Steve Williams /

boost bottles were standard fitment on some yamaha 2-stroke motorcycles,they plugged into the inlet manifold so were fitted before the reeds,yamaha definitely know what they are doing so they must work if designed,made and fitted correctly.

Re: so no real tuner have boost bottle? really

Banshee 2cyl Atvs have 'em too

Re: so no real tuner have boost bottle? really

hmm found this too interesting, looks like the "bottle" is a rubber boot and the spring goes inside then from all the sucktion it tightens then when the throttle is relaesed it opens up sucking the fumes and gas in, then when the thrttle is hit again it sucks in in , looks pretty sweet

http://mopshop.de/shop/product_info.php?cat0=441&cat1=1264&cat2=1267&cat3=TW90b3J0ZWlsZQ==&products_id=6713&osCsid=94fc6599a36d3e40e32bf92720ad387b

Re: so no real tuner have boost bottle? really

Re: so no real tuner have boost bottle? really

wtf the link is ther,the pic wont show

Re: so no real tuner have boost bottle? really

The malossi accordion type is the only one I'd even bother messing with. Then again, I don't think the gain is worth the cost.

Re: so no real tuner have boost bottle? really

acting on OG leefungchow /

gay

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