Homemade intake scoop?

[Budget GoKart]

So i was just fiddlin around with my mini bike and i have some scrap plastic i was wondering if i could make a custom homemade intake scoop. plus im broke how would i go about it? Im sort of thinking of a hood scoop sorta thing but off to the side i just am trying to get it to breathe better.

 

[Budget GoKart]

So heres a sorta template thing would this help any?

 

[landuse]

Just remember, more air will mean fiddling with everything else in the carb etc to make it run right again. You are not really going to get much more performance out of the engine

 

[itsid]

I like the look.. even it being square looks great IMHO.

With a few feet of angle iron and some clamps you can build a makeshift sheet bender.
some aluminium sheet and you'd have a permanent intake alike

OR which might be easier for some:
get some fibreglass from the car repair shop and epoxy to go with it,
then just tack your template to a bit of wood (so it keeps it's shape)
wrap it in saran and start layering fibreglass (3 or four layers should do)

I doubt you're able to create much of a ram air effect
So I don't see too much issues with your fuel/air ratio.

But keep in mind that you still need an air filter, otherwise your engine will surely suffer eventually.
and on dusty roads you're also scoopning up more dirt, rocks and debris,
so shorter air filter maintenance might be nneeded

But I like the look of it!
'sid

 

[Budget GoKart]

I agree sid also i have scrap plastic i can make work and im going to make one for my go kart and mini bike

 

[itsid]

yeah but plastic sheet is hard to work with at times..
if you can hot bend it... fine,
but take care about proper stress relief or the sun might crack it open in a few days or weeks.

Glueing can lead to discoloration or insufficient bond
and in the end a plastic part quickly looks kinda cheap'ish
(surface inconsistent or edges not properly treated etc...)

So personally I'd go for aluminium instead
cheap to get material easy to cut and bend...
can be filed and polished to perfection;
anodized or painted...
and even if you cannot weld or braze seams, you can certainly JB weld them from the inside..
a bit of filing and you still have perfect edges

'sid

 

[BigWes]

I don't know how big that is but maybe you could score a piece of aluminum downspout or gutter tray and some time snips...and a can of spray paint... it's a n easy starting point to go with Sid plan on the cheap if you wanna think outside the box. Just an idea. You can easily cut and bend and drill it.

 

[Budget GoKart]

I have kid abuse grade plastic that is well over 16 years old so it its pretty strong also thick but i may use some metal instead because it seems better

 

[bob58o]

Why is there a panel front and center of the filter?
Is that the anti-scoop panel?

Would it also make sense to have an exit hole on the back side of the scoop?
I never studied fluid dynamics but I could imagine a pocket that the air just tries to flow around. ???

 

[Budget GoKart]

Well i was sort of thinking like mustang or rally car type but for the go kart it will have a subaru style one

 

[itsid]

Nah bob, I don't think an escape at the back makes much sense really...

Or better:
I doubt you can generate ram air pressure with a scoop like that,
a back escape would for sure make it impossible for any ever so minor excess to build up.

if you happen to generate some pressure for some reason,
the only effect is, that your engine will have a slightly easier intake
but surely no noteworthy leaner mix or anything.

'sid