Which airbox?

Which airbox other than stock is best? Lets put noisy open filters aside.
BGM?

TNT?


OR the best engineered gilera runner airbox? :lol:

 

i havent personally tested them, so i cant comment on if the top 2 air boxes actually flow any better than the std airbox...but wax made a neat underseat airbox install on his polini evo Aerox out of the tnt air box, and i run an underseat airbox off a 100cc kart

 

I think u are the MOST active here. Can u take some pics to show the airbox? Pics tells a lot than words. :grin:

 

well the thing is it aint pretty to be honest, but its hidden under the seat, so its not on show...

but it performs really well, much better than any filter ive tried before, its got 2 venturi tubes inside it, which accelerate the air flow going through the airbox, which gives storming low to mid range grunt....and its soooo quiet, makes a ring a ding a ding noise pmsl :grin:

they do a bigger box for 125cc karts too, but i think they are designed for rotary induction, on reed valve engines you want the intakes offset so you get wave reflection going through the box...helps the reeds react faster and also helps get the fresh charge into the engine, which is why you lose loads of mid range torque with an open filter

sorry no pictures at the moment...

 

I havnt tryed them either , but im after one too ( since about 5 seconds ago ) but im sure there wouldnt be that much difference between the BGM and the tnt one what are the prices like on them ?

 

im pretty sure scooter centre sell them both...

 

since u'll so helpful, y dont u take a pic? :beg:
:grin:

 

I should be ordering the TNT one to try. I wan to see yours and compare how to link it up with the carb and cut helmet bay. i know if the tubing is too long, it wont be that effective.

 

im gonna order the other one then just to be different ... oh who am i kidding im gonna order the other one because its cheaper itll be better than the shitty k&n style one ive got on now let me know how it is when you get it

 

This is similar to the one im using...

http://cgi.ebay.co.uk/Go-kart-air-b...s_Vehicles_Other_Vehicle_Parts_Accessories_ET

 

i have looked thru your site, i saw your box.
i see u have cut away ALOT of the helmet bay. how is the air channeled to the box?
i'm thinking if connect tubings from the front end to scoop air into the box will be better? RAM air effect? :yahoo:

 

i dont channel any air to the box, i have cut the bottom of my helmet bay out, so theres plenty of air circulating around for the air box to breathe...

the air will be cooler in that location anyway than a std airbox, as the std air box is bolted directly onto the engine, which gets pretty hot...

you can feed cooler air to the box if you like, it might make a tiny difference in the summer, but this isnt a very hot country anyway, we get a few weeks of warmish weather, the rest of the 9 months of the year is bleeding freezing lol :lol:

 

i'have got a VERY hot weather here. Just came back from bike testing, jettings run rich when it gets very hot.zzzzz so troublesome

 

ahh yes sorry m8 just noticed your location: Asia :whistle:

in this country most scooters are fitted with heated carbs, to help them warm up quicker on cold mornings, and to help prevent carb icing, im not sure if scooters for the Asian market are fitted with them, but thats one thing that deinitely needs disconnecting before you worry about feeding colder air to the airbox

i actually run without a heated carb all year round in Britain, ive never had a problem really, even in the depths of winter...

 

those fitted with delorto carbs do have them but normally we take them out. now the bike really run well. much better in low-mid then those open filter runners 180cc. :yahoo:

 

U means those small box with filter in them? finding abit hard to understand u. :lol:

 

well im gonna disagree...ive raced all the aerox's with open filters around coventry and ive beat them running a kart air box...my runner is heavier than an aerox and at 14 stone im a lot heavier than the riders...

unless youve tried a kart airbox....not really worth commenting

 

The main reason karts have to be fitted with an air box (by the rules now) is to decrease sound to meet noise restriction requirements at many tracks...

http://www.youtube.com/watch?v=CQfCuLCNw74&feature=related

as long as you pick an air box that will flow the required amount of air, there should be no loss in top end performance over an open filter....but gains everywhere else.

often an open filter will give gains over a stock scooter air box, but often scooter air boxes arent designed with performance in mind, quite often they are there to help restrict performance to meet the 30 mph moped laws, or are designed more with manufacturing costs or looks in mind

going back to the aerox's, they were pretty quick, infact as i stood at the side of the road watching them bomb around, i was getting second thoughts about racing them, and wondered if i should somehow try and find an excuse and go home :lol:

as it turned out i neednt have worried, my attention to detail had paid off and i had the quicker bike :yahoo: there were a few aerox owners questioning me about my set up afterwards :whistle:

i even beat crossie on his supposedly 77mph RS50....was funny seeing him flat on the tank in top gear trying to catch me going down a hill, i was just sat upright in front...casual as you like

anyway enough trumpet blowing from me...