I would love someone to show me one dyno chart where a boost bottle made any measurable increase on a midbike engine. I am wagering that we will not see one because it does not exist.
a correctly made boost bottle will do at least SOMETHING to an engine.. i know it has, because i put one on mine and i could tell as soon as i started it up that it revved higher, idled higher, and started up easier. I know it wont do anywhere near as much as a reed block, but it does something. Id think youd notice it on an engine with no mods on it than one with mods...
I voted good, becuae I had good results from my boost bottle. I haven't try a blast box or reed kit. But from all the post I read about the reed kits, they seem to be a better choice for performance seeking riders. Over all the boost bottle to me is not a bad choice for a mod for a newbie IE (Me), if it is done right.
Ilove how people sling this where the dyno boost bottles suck thing out there every once in a while. how ver they have been dyno'd, and have been proven to work. just not on pb's. boost bottles have been around forever for 2 strokes (dirt bikes especially), and have been proven to work.
Boost bottles only really work on piston port two stroke engine, The engines in the "47cc" bikes are case reed engine and boost bottles really dont help much
I have never seen a boost bottle on any manufactured dirt bikes. I have seen rc cars with them but I still have never heard of them actually helping performance wize. You are better off spending your money on a better set of reeds.
Yes, you are better off spending your money on a better set of reeds, but thats not the point.. The point is boost bottles do make a difference, and they do work, to an extent. They may not work as good as a 150$ black widow reed kit but for 15$ in parts, correct measurements and calculations, and some time, the boost bottle WILL work and WILL make a difference.. The boost bottle and blast box does almost the same thing as a reed cage, except a reed cage does it better. A boost bottle or blast box colects the air coming back out, and keeping it for the next stroke while a reed cage just stops it all together, so yes, a reed cage is better but boost bottles correctly made and measured WILL make a difference.
exactly. If you have a 49cc engine, the air displacment in the bottle INCLUDING THE TUBING will have to equal 49 cubic centimeters, EXACTLY. If your making one, measure out 49 milliliters in water (if i remember my science correctly, 1 mililiter in liquid the same as 1 cubic centemeter in a solid mass) and pour it into your the bottle your making it from. Make sure it overflows the bottle a good deal, try to find a nice small one, then put your tubing on it and fill it back up and see if it goes right to the top, if it measures out perfectly, you have a perfectly made boost bottle, and it WILL make a difference... The cheap ones they sell on ebay are ginourmouse and have WAY to much displacement.. If its made corectly, it will work.
Yes, you are better off spending your money on a better set of reeds, but thats not the point.. The point is boost bottles do make a difference, and they do work, to an extent. They may not work as good as a 150$ black widow reed kit but for 15$ in parts, correct measurements and calculations, and some time, the boost bottle WILL work and WILL make a difference.. The boost bottle and blast box does almost the same thing as a reed cage, except a reed cage does it better. A boost bottle or blast box colects the air coming back out, and keeping it for the next stroke while a reed cage just stops it all together, so yes, a reed cage is better but boost bottles correctly made and measured WILL make a difference.
duh. I spent $10 bucks and cut my own from carbon fiber. I am trying to tell you do not waste your time with them......spend the time and money elsewhere.
reed inducted engines use reed kits (duh) which completely stops the air coming back out of the engine. A boost bottle collects the air coming back out and stores it for the next stroke, but since the reeds stop the air coming back out theres nothing left for the boost bottle to collect, unless your reeds arnt working.
On a reed inducted eng. use just a reed spacer to slightly increase the cranckcase volume and you will get the efect of a boost botle and leave the boost botles for a piston port engines!
