My engineering students are building a mini-chopper and as I was browsing e-bay for parts I came across an electric turbo. Has anyone used one of these? I am assuming they only turn on at WOT. I also assume that you would have to increase fuel otherwise the mixture would lean out and would run like a dog. Would using a pulse pump and a larger jet fix that issue?
Electric Turbo
- Thread starter MrGentry
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anickode
Active member
Utterly worthless.
These are basically 12v exhaust fans for boat engine compartment (bilge blowers) with some chrome paint and the air filter on in the completely wrong place for the pic.
The amount of power an actual functional electric centrifugal supercharger (turbos are driven by exhaust gases) for a small engine would need would be approximately comparable to an automotive starter motor.
Do not waste your money.
$60 would be much better spent elsewhere.
These are basically 12v exhaust fans for boat engine compartment (bilge blowers) with some chrome paint and the air filter on in the completely wrong place for the pic.
The amount of power an actual functional electric centrifugal supercharger (turbos are driven by exhaust gases) for a small engine would need would be approximately comparable to an automotive starter motor.
Do not waste your money.
$60 would be much better spent elsewhere.
mckutzy
Well-known member
It's been a busy year..... I reckon it's about the 3rd time this year an electric supercharger topic has come up....
It's comes down to... EFI turbo, super/twin charging... Ect forced induction methods don't do much to the effect a bigger engine will do(we're assuming this is clone engines were talking about)..
Save it for gas money, oil, sparkplugs air filters.... The expendables...
It's comes down to... EFI turbo, super/twin charging... Ect forced induction methods don't do much to the effect a bigger engine will do(we're assuming this is clone engines were talking about)..
Save it for gas money, oil, sparkplugs air filters.... The expendables...
KartFab
Active member
Basic upgrades (if you are using an industrial engine)
Stage one: high flow intake, exhaust, some sort of dirt bike carb (you can keep your regular carb, and outfit it with a high flow adapter if you dont want to be able to go up to stage four, or dont care about max performance at stage two or thre).
Stage two: governor removal, billet connecting rod, heavy duty valve springs. keep rpms to 5500 or below.
Stage three: choice of cams, billet flywheel, timing advance
Stage four: ratio rockers, chrome moly push rods, stainless valves, port job, flat top piston, balance rotating assembly, possibly bore to larger diameter, smaller ring gap, mill head for desired compression ratio, use the appropriate fuel.
Might want to look at the costs of that vs just getting an acutal engine for a dirt bike or small mororcycle to begin with and adapting the frame to it.
Personally, i think the whole predator 212cc, 30 series torque converter, and stage 1 kit is a pretty inexpensive way to have a lot of fun!
Stage one: high flow intake, exhaust, some sort of dirt bike carb (you can keep your regular carb, and outfit it with a high flow adapter if you dont want to be able to go up to stage four, or dont care about max performance at stage two or thre).
Stage two: governor removal, billet connecting rod, heavy duty valve springs. keep rpms to 5500 or below.
Stage three: choice of cams, billet flywheel, timing advance
Stage four: ratio rockers, chrome moly push rods, stainless valves, port job, flat top piston, balance rotating assembly, possibly bore to larger diameter, smaller ring gap, mill head for desired compression ratio, use the appropriate fuel.
Might want to look at the costs of that vs just getting an acutal engine for a dirt bike or small mororcycle to begin with and adapting the frame to it.
Personally, i think the whole predator 212cc, 30 series torque converter, and stage 1 kit is a pretty inexpensive way to have a lot of fun!
MTNSleder
😈 Snake ƘƖԼԼЄ&
I'd get something like this.. I'm going to go off and say a turbo of some sort would make some Hp difference weather it's electric or air force driven..
http://www.ecotrons.com/products/small_engine_rhb31_vz21_turbocharger/
http://www.ecotrons.com/products/small_engine_rhb31_vz21_turbocharger/
pRoFiT
Can't buy it?, build it!
Okay buy the +$600 in parts you need to install that and let us now how it works. It should be better then a cheap electric fan.
You could purchase a really big motorcycle engine for that price...but who am i to stop experimentation.
You could buy a used car and pull out the engine for that price....
Anyways, let us now how much more speed you get.
---------- Post added at 02:59 PM ---------- Previous post was at 02:57 PM ----------
$60 in spray paint would make it faster. everyone knows flames on a mini bike makes it go faster
MTNSleder
😈 Snake ƘƖԼԼЄ&
$600 for a turbo.. I thought it was a good deal.. $9000 for a decent TURBO for my motorised snow slay
I don't have any plans to try it out (yet)...
I don't have any plans to try it out (yet)...
anickode
Active member
Okay buy the +$600 in parts you need to install that and let us now how it works. It should be better then a cheap electric fan.
You could purchase a really big motorcycle engine for that price...but who am i to stop experimentation.
You could buy a used car and pull out the engine for that price....
Anyways, let us now how much more speed you get.
---------- Post added at 02:59 PM ---------- Previous post was at 02:57 PM ----------
$60 in spray paint would make it faster. everyone knows flames on a mini bike makes it go faster
$60 in spray paint would do an entire CAR.
pRoFiT
Can't buy it?, build it!
$600 for a turbo.. I thought it was a good deal.. $9000 for a decent TURBO for my motorised snow slay
I don't have any plans to try it out (yet)...
$9,000! just for the turbo kit? Or is that an engine with Turbo? Seems high to me. but i dont buy turbos that...well never.
This is the most expensive on ebay?
http://www.ebay.com/itm/MPI-Yamaha-SR-Viper-Turbo-Kit-SMA-8KS17-00-TB-MTV-0500/252691791554 only 3200. Retail Value: $3299.95
not that ebay is a price setter.
but yah 600 if it really gives some more HP. but like what would you get from a 6.5hp engine anyways. double HP??? i think could be spent on regular upgrades for less. with better outcome.
MTNSleder
😈 Snake ƘƖԼԼЄ&
I'd never buy one it's just about half the cost of my Sled...$9000 + plus blown crankshafts, chains and lots of belts..
https://shop.boondocker.co/index.ph...ducts_id=491&zenid=8bdej958ofc8bvibkiarkfeim6
bob58o
SuckSqueezeBangBlow
I think using a leaf blower for boost would be a great exercise in "Redneck Engineering"!
For the students, of course.
Or a smog pump.
Or AMR 300 / AMR 500 Supercharger.
https://www.youtube.com/watch?v=U81_0waqEWA
For the students, of course.
Or a smog pump.
Or AMR 300 / AMR 500 Supercharger.
https://www.youtube.com/watch?v=U81_0waqEWA
MTNSleder
😈 Snake ƘƖԼԼЄ&
How about a NOS kit? Same price as your electric air mixer... http://www.6sigmajetkit.com/nitrous-kits.html
bob58o
SuckSqueezeBangBlow
I'll be using one of these in the future. Just deciding how I want to plumb up a wet system.
I have thought about a NOS system, but it runs into the same issue. Unless you increase fuel it doesn't increase performance much. I realize the electric turbos are generally not going to add much power, but for high school students, it's more about the "cool" factor than it is about the performance.
Now, back to the original question, if we were to use the turbo kit (or NOS) how would we increase the fuel? Pulse pump? Bigger jet? Both?
Now, back to the original question, if we were to use the turbo kit (or NOS) how would we increase the fuel? Pulse pump? Bigger jet? Both?
MTNSleder
😈 Snake ƘƖԼԼЄ&
Bigger jet.. around 35.
I'm assuming were talking about a 4 stroke 200cc eh?
The NOS kit I don't think you need to increase the fuel lots because it is fuel right.. but i don't have one so I don't know.
I'm assuming were talking about a 4 stroke 200cc eh?
The NOS kit I don't think you need to increase the fuel lots because it is fuel right.. but i don't have one so I don't know.
bob58o
SuckSqueezeBangBlow
NOS is NOT Fuel. It doesn't burn. It is like Oxygen (kind of). It is a chemical blower. You need to add fuel.
A Dry shot of N2O (without adding fuel) needs an EFI system to see that the air fuel ratio goes lean when you hit the button or a carb that is tuned to run rich (won't run great off the bottle).
Oxygen is also not flammable, but it is a high-energy gas that very readily oxidizes other materials. For something to burn, the reaction requires a fuel (the thing that burns) and an oxidizer like oxygen. Without the fuel, though, no combustion will take place no matter how high the concentration of oxygen is. Since air itself is not flammable, it is not a fuel and will not combust, spontaneously or otherwise.
The electric blower you linked... Maybe a smaller jet. It might slow down the air and act like a restriction. Try it and show us we are wrong. I wouldn't dump any money into it.
A real blower, bigger jets.
N20 is a little different. You only need extra fuel when you are on the bottle. So possibly a fuel pump, fuel solenoid, a fuel jet.....
A Dry shot of N2O (without adding fuel) needs an EFI system to see that the air fuel ratio goes lean when you hit the button or a carb that is tuned to run rich (won't run great off the bottle).
Oxygen is also not flammable, but it is a high-energy gas that very readily oxidizes other materials. For something to burn, the reaction requires a fuel (the thing that burns) and an oxidizer like oxygen. Without the fuel, though, no combustion will take place no matter how high the concentration of oxygen is. Since air itself is not flammable, it is not a fuel and will not combust, spontaneously or otherwise.
The electric blower you linked... Maybe a smaller jet. It might slow down the air and act like a restriction. Try it and show us we are wrong. I wouldn't dump any money into it.
A real blower, bigger jets.
N20 is a little different. You only need extra fuel when you are on the bottle. So possibly a fuel pump, fuel solenoid, a fuel jet.....
We are actually using a 79cc Harbor Freight engine. The 212cc was too big for the frame we have.
I have gotten some parts for the motor from affordable go-karts and they recommend changing to a 80 jet when changing the air cleaner and exhaust, which we will be doing, but I wasn't sure if that would be big enough if we were to add the "turbo"
I have gotten some parts for the motor from affordable go-karts and they recommend changing to a 80 jet when changing the air cleaner and exhaust, which we will be doing, but I wasn't sure if that would be big enough if we were to add the "turbo"
bob58o
SuckSqueezeBangBlow
Check what the spark plug looks like without the bathroom fan. Then check it after using the fan. If it looks leaner, then the fan works and you should be able to add more fuel (bigger jets) and get more power. If you want to be safe, use a 0.036" Jet with the fan and see how it runs. If it runs ok, check the plug. If it looks too dark... Then lower the jet size, check the plug, and repeat.
While examining the engine I noticed that there is an aluminum spacer approx 1" thick between the block and the carb. If we went with a NOS kit like the one from 6 sigma, could we tap a brass fitting into the spacer, use a T or a Y in the fuel line between the tank and carb, connect a line from the T or Y to the line coming from the NOS with another T or Y and connect that line to the brass fitting? I'm thinking this would create a Venturi effect, suctioning some fuel as the NOS passes which would then be injected into the engine behind the carb. Anyone tried it?
bob58o
SuckSqueezeBangBlow
I believe a set up that that could work. It might be difficult to tune. You'll get some fuel all the time, just from gravity right??? And then more fuel when you hit the N2O right??? Maybe use a smaller main jet to make up for the extra fuel when not on the N2O???
I dunno? I wouldn't give highschool kids laughing gas. Not without a 500 word essay explaining what N2O is, how it works, and how to prepare an engine to use it.
I dunno? I wouldn't give highschool kids laughing gas. Not without a 500 word essay explaining what N2O is, how it works, and how to prepare an engine to use it.
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