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T-Bone
Well-known member
Hey Mike,
That's the kind of outside the box thinking that would make Mick Laden proud!!! Let us know how it works.
TJ
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Electric turbos super charger what do you think? IT COULD WORK...... maybe?
- Thread starter brent9k
- Start date
That's the kind of outside the box thinking that would make Mick Laden proud!!! Let us know how it works.
TJ
I've got several computer cooling fans laying around. Two compounded puter fans per carb... The diesel guys will be envious. Then some aero-turbine mufflers to "suck it" on through and shazam!
A normal blade fan is not efficient or effective enough to push air against backpressure. The PC fan or bilge blower is just going to sit and cavitate. They can move air, but can't even produce the pressure of a popcorn fart. You need an axial fan to create positive pressure inside your intake, and a strong axial fan spinning at high RPM at that. The only way to really make an electric turbo work is to have it on a rapid discharge capacitor and use it like NOS. Plus, it has to fail open so the machine can run normally aspirated when the system is charging.
I guess there's a sucker born every minute.... LMAO
would this be a blower sucker?
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Snowstar
Well-known member
Last time I tried one of those crazy ideas I wound up in a mexican jail with no memory of how I got there.
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brent9k
New member
its ON
OK, I have looked into this and im seeing that the people that say it will not work do not have any hard facts to back it up. I am big into R/C stuff and there are ESC (electronic speed control) rated for high AMPS (50-80) at 14 v that is more then 1000 watts.
all the negative people need to remember Im only looking for 1-3 psi of boost.
one thing that im not understanding is why do you think it would be better on a 4-stroke.
( if it would work on a big 4-stroke it should work just fine on the 2-S)
If you say " its EFI " that just tells me you dont know how to jet a sled.
GO LEAN OR GO HOME
OK, I have looked into this and im seeing that the people that say it will not work do not have any hard facts to back it up. I am big into R/C stuff and there are ESC (electronic speed control) rated for high AMPS (50-80) at 14 v that is more then 1000 watts.
all the negative people need to remember Im only looking for 1-3 psi of boost.
one thing that im not understanding is why do you think it would be better on a 4-stroke.
( if it would work on a big 4-stroke it should work just fine on the 2-S)
If you say " its EFI " that just tells me you dont know how to jet a sled.
GO LEAN OR GO HOME
big difference in how a supercharger works on a 2-S vs a 4-S...
not that many years back the real knowledgeable sled guys were publishing arcticles about why liquid cooled 2 stroke engines were a bad idea and would'nd work on sleds, then a couple of Polaris engineers got pissed off and founded Brutanza and proved you could liquid cool a 2 stroke sled motor.......well there's only worked for an hour at a time, but anyway new technology is always scarey to lots of folks.
Figure out the CFM moved through the engine and in a closed area, mount a fan that will exit that amount of air. Not add your "turbo fan" that will blow air into the closed area and with a pressure gauge, measure the pressure delta. Me thinks you would need a pretty massive puter fan to show even a minute pressure gain but who knows. Take pictures of this contraption lol.
Dudes, for those that are serious about this, stop what you are doing and go to the library and read some books on the subject.
You will do yourself and us a huge favor. I am not going to say it won't work, I have been wrong before, but it almost sounds like a perpetual motion machine in that you are taking power from the engine, turning it into electricity, power an electric motor, which provides more power to the engine, and turning more into electricity........
Otherwise you will need some good electrical storage needs.
You will do yourself and us a huge favor. I am not going to say it won't work, I have been wrong before, but it almost sounds like a perpetual motion machine in that you are taking power from the engine, turning it into electricity, power an electric motor, which provides more power to the engine, and turning more into electricity........
Otherwise you will need some good electrical storage needs.
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Boyko
Well-known member
I think you should give it a go, The cheep fan thing has been tried before with not much luck. To get to the point to being effective you will have to rig up some type of valving in the exhaust to keep the exhaust pressure above boost and toe a small skiboose loaded up with batteries. It take a lot of air to make boost and that being said it also takes a lot of power.
http://images.google.ca/imgres?imgu...Electric+supercharger&ndsp=18&um=1&hl=en&sa=N
http://images.google.ca/imgres?imgu...Electric+supercharger&ndsp=18&um=1&hl=en&sa=N
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brent9k
New member
OK, I could be wrong,
But
The power system on a polaris is a shunt regulated system and it runs at full load all the time. The way it is regulated is by dumping extra power to ground and is burned off by heat. So my theory is that you will only be utilizing the power that your system is making, not wasting it in heat. The real question to me is can I buy a reliable blower that will do 250-300 cfm @ .5-2 PSI.
I don’t understand why people are talking about pipe pressure. I plan on running my twin pipes and not mod them. All I want to do is push a little air into the engine I don’t know how or why the pipe PSI would effect a reed valve motor ( I don’t think it would work on a piston port motor.)
I figured the cfm usage of my 800, it should be around 230cfm, At 100% efficiency.
One guy told me you need to calculate more then 100%. I don’t understand that either.
If you have 800cc twin , that is 400cc on each side, now that engine can only suck in 400cc at a time @ 100% efficiency. I don’t believe you could get this to suck in 400cc or be 100%.
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Snowjunky
Well-known member
Brent,
I built a stroker crank for a standup motor last summer. While at the machine shop there was an aerodynamic engineer there earlier that had a squirl cage fan that pushed a whole lot of air. Looked really just like a heater blower motor. As I waited for the machine shop owner I started looking at it pretty close. Vinny explained how they were trying to change the vortex of the fan blade. In turn it wuld make the fan actually push harder which equals pressure. As I have read you are trying to make pressure with a fan that is used for cfm. Now if you are big into RC why not take a ducted fan which is made for pressure put a flex drive of a weed waker on it and power it off the end of the crank. The power takeoff might be a bugger to build but you are definately thinking out of the box. If ya need some parts made let me know. I got a good lathe a great 9 x 36 mill and a welder for every need. But on the fan issue that Pooslinger brought up is right on. Thats what that engineer was trying to overcome. Something about the air coming off the tip of the blade or something.A compressor is just a fan that wont cavitate. Use a vacume cleaner fan and a electric motor from your plane and you might get your 3 psi. Keep thinking out of the box. Ever look at an old old sled?
I built a stroker crank for a standup motor last summer. While at the machine shop there was an aerodynamic engineer there earlier that had a squirl cage fan that pushed a whole lot of air. Looked really just like a heater blower motor. As I waited for the machine shop owner I started looking at it pretty close. Vinny explained how they were trying to change the vortex of the fan blade. In turn it wuld make the fan actually push harder which equals pressure. As I have read you are trying to make pressure with a fan that is used for cfm. Now if you are big into RC why not take a ducted fan which is made for pressure put a flex drive of a weed waker on it and power it off the end of the crank. The power takeoff might be a bugger to build but you are definately thinking out of the box. If ya need some parts made let me know. I got a good lathe a great 9 x 36 mill and a welder for every need. But on the fan issue that Pooslinger brought up is right on. Thats what that engineer was trying to overcome. Something about the air coming off the tip of the blade or something.A compressor is just a fan that wont cavitate. Use a vacume cleaner fan and a electric motor from your plane and you might get your 3 psi. Keep thinking out of the box. Ever look at an old old sled?
Do you not look at anything people have posted?
You do not have enough power to run the fan for any length of time. Though you can use a battery/capacitor to run it momentairly but will be pretty much useless...
A 2 stroke will always have the intake and exhaust ports open BOTH AT THE SAME TIME at some point in the cycle. Thus you will blow some of your fresh fuel/air mix out the exhaust, that is why the drive pressure (or pipe pressure as your calling it) from a turbo helps, it helps keep the fresh air/fuel mix from blowing out the exhaust. Cyl reed, case reed or piston port it doesnt matter.
Twin pipes would only make the effect listed above even worse!
Just some points that have already been brought up. IF you think you can build something that works, go for it, nobody is stopping you and its your money!
You do not have enough power to run the fan for any length of time. Though you can use a battery/capacitor to run it momentairly but will be pretty much useless...
A 2 stroke will always have the intake and exhaust ports open BOTH AT THE SAME TIME at some point in the cycle. Thus you will blow some of your fresh fuel/air mix out the exhaust, that is why the drive pressure (or pipe pressure as your calling it) from a turbo helps, it helps keep the fresh air/fuel mix from blowing out the exhaust. Cyl reed, case reed or piston port it doesnt matter.
Twin pipes would only make the effect listed above even worse!
Just some points that have already been brought up. IF you think you can build something that works, go for it, nobody is stopping you and its your money!
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