Paintball Guns and Gear forums banner

1 - 20 of 44 Posts

·
Premium Member
Joined
·
13,027 Posts
Discussion Starter #1
For a goped... ;)

What I want to do is take a stock air filter box, Make a thin foam pad to catch any dirt or anything, and put a fast rpm computer fan in there powered by a battery and switch. Run the wires and switch up the frame next to the kill switch so I could toggle it on and off. The increased airflow will increase the speed and horsepower for a limited time. I'm wondering if this would work right and I need some ideas on how to mount it want what not.

I'll have to sacrifice my K&N Filter but I don't mind it. I got a old filter box thats all ruined and I could mod it any way I would like to.

Please help me out. ;)
 

·
Holy ****ing Asscrackers!
Joined
·
6,721 Posts
yeah you'd have to increase the amount of fuel proportional to the amount of extra air you push in, and I don't think that'd be easy, if at all possible. but of course, it takes me a few extra strokes to get the job done, if ya know what i mean ;)
 

·
Registered
Joined
·
4,779 Posts
won't work. computer fans only push about 30-35cfm, which is NOTHING comopared to what an engine needs. i've already though about that idea for my ranger. just won't push enough air so don't even bother.
 

·
Registered
Joined
·
4,355 Posts
and its a 2 stroke all of the boost from the intake will just be blow out of the exhaust port. waste of fuel and air
 

·
Registered
Joined
·
4,779 Posts
yeah thats true also. wheres wat i would do. for fun, make yourslef a ram air for it. just make a hose or w/e w/ a filter that has the open end fowards. not that u can do much w/ a goped/moped ne way...though u can have some fun w/ them if it has electric start...oooo exaust flamethrower... :D
 

·
Premium Member
Joined
·
13,027 Posts
Discussion Starter #7
We took a backpack blower and did this. It worked fine.

So is a computer fan not enough power? Would I need more than 1?

I'm going to focus on rewelding my pipe and building custom neons.
 

·
Registered
Joined
·
4,779 Posts
yeah thats like the diff between a cesena and a boeing 777 in power there bro. and no, multiple fans will not help, each can only spin at a certian rpm, and at that certian rpm can only for x ammount. does it have electric start? if so i'd have some fun w/ it, it isn't hard ot make an exaust flamethrower out of it.
 

·
Premium Member
Joined
·
13,027 Posts
Discussion Starter #10
No it's push start and Pullstart. I could rig an electric one for 200 bucks. :-/
 

·
Imperator
Joined
·
19,071 Posts
Make sure you don't lean out the fuel ratio too much, a little lean is where the most power is produced in two strokes, too lean and it will cause problems.
 

·
Premium Member
Joined
·
13,027 Posts
Discussion Starter #12
Yeah I'm never going to have my dad get gas for me again though... I told him 1-1/2 gallons and its mixed perfectly already.

Well he added MORE Oil in it and only put 3/4 gallon it.

So I'm running roughly 20:1 when it should be 40:1 and I usually do 43:1.

Gah :-/
 

·
Registered
Joined
·
421 Posts
they make like some kinda boat fan that people put on their cars intakes for like 2 psi of boost. so if you can match that by adding more fuel the hp would jump greatly. good luck (electric s/c)
 

·
Registered
Joined
·
4,779 Posts
countryaccent said:
they make like some kinda boat fan that people put on their cars intakes for like 2 psi of boost. so if you can match that by adding more fuel the hp would jump greatly. good luck (electric s/c)
those are boat bilge fans, and they still don't flow enough to do much for their advertised(vehicle) use, but they MIGHT might do something for a small engine like that, they are between 20-30 bux on ebay. i still vote for flame thrower and custom exaust if its electric start.

EDIT: didn't see your lil post about it not being electric start. i bet you could jerryrig somethin for less than 50 if you have any access to machine shop tools.
 

·
Imperator
Joined
·
19,071 Posts
1337PAINTBALLER said:
Yeah I'm never going to have my dad get gas for me again though... I told him 1-1/2 gallons and its mixed perfectly already.

Well he added MORE Oil in it and only put 3/4 gallon it.

So I'm running roughly 20:1 when it should be 40:1 and I usually do 43:1.

Gah :-/


Ah, common mistake. Oil-to-fuel ratios in two strokes and air-to-fuel ratios are different. Air to fuel is the amount of fuel that gets atomized into the air, oil to fuel is the ration of gas to oil when mixed (because two stroke engines use a mix). In order to change air to fuel you need an adjustable carb or you need to change carb jets.
 

·
Registered
Joined
·
427 Posts
Technically it isnt forced induction unless there is a compressor. Who ever says you cant F/I a two stroke is completely wrong, an engineering college around here has an aerocharged (really small turbos for motorcycles and stuff) polaris x-edge 600. That thing is fast as hell, they had it at the snow drags last year, i dont think they lost to much other then an custom alky arctic cat. Anway, your best bet would be to just open up the intake track as much as possible.
 

·
Anne Coulter's #1 Fan
Joined
·
4,291 Posts
Here's an idea, get a bottle of whipcream, stand it right side up, put a hose from the nozzle to the air box, and hit the bottle of whipcream.

Instant Nitrous boost!
 

·
Premium Member
Joined
·
13,027 Posts
Discussion Starter #20
I was thinking about rigging a Remote Kit to my filter, run a nitro tank on my handle bars, twist knob for pressure into the carb. But it seems risky and too much of a pain.

But I'm really considering it on my pocket bike.
 
1 - 20 of 44 Posts
Top