Neat experiment but you will not get much air into the cyl. to pressurise (or out) with the little valves & all the turns in the ports. The concept is not new. For MANY years people have used one or more cyls. on a multi cyl. engine as a compressor. I have a friend who has a 3cyl rotary aircraft engine from the '30's with one cyl. set up as compressor. Really neat. Anyway, keep up the work & good luck.
Yes, you are right, this is big and heavy, and doesn't put out a whole lot of air, but it was the simplest way I could figure out, to get the job done. A mini Roots is a hard item to come by at a scrap yard! :)
@ChargerMiles007 Try a smog pump.You can buy Dick Datson,s book "Supercharging Small Engines" for about $15.00 on ebay. They are the Gator Supercharger guys. Tells how to build a blower for about $100.00. Easy and you only need simple hand tools and some parts from a Toro leaf blower. Too Cool.
That is a HEAVY supercharger!!!!!!! But SMART. I am building a drag racing machine and using a 4.5hp. I am supercharging it. I went to the vaccum store and got a decent size motor. Those things blow!! I told the owner what I am using it for and he gave it to me in turn I put his name on my machine. I am sponsored which is sweet. I just had a motor donated too. The hardest part about using the Vaccum motor was I wanted to reuse the electric driveshaft. I used a grinder and removed the copper.
The vacuum will put out lots of air, but it has to rev very high to do so!
I have a vid where I show one we superchargered with a modified car Turbo, but even at 6:1 belts, it still doesn't really turn fast enough to build much boost.
@ChargerMiles007 I am using a 2 sroke... higher rpms and the gearing is key. The fan blows as long as air is going in and it is turning which at low or high rpms is beter than pure atmospheric pressure. On vehicle applications the boost has to build with rpm.
@ChargerMiles007 A cvt engages at almost 4000 rpms when the engine is tuned for lets say 10000 rpm. So the boost is essential at 4000 rpms. 4000 rpm with the charger geared at 6:1 has you fan pushing at 24 000 rpms. Worst case sceneario you dont recieve significant boost till your highend. It is better than no boost and I think the shear wieght reduction of my concept makes it ideal. It wieghs as much as a baseball.
@ChargerMiles007 But I like your concept. Maybe if you had a light wieght pistion pump manufactured it would be ideal for an application but using a cast iron or aluminum block head and crankshaft is not nessiarry ideal for commpressing air beacuse it was made for a heavy duty application - harnessing an explosion. Maybe a pump off an air compressor would work if were lighter. idk
@ChargerMiles007 Do me a favour, if you have a larger vaccum (as I have a larger motor) turn it on, put your hand over the exhaust. keep it there and turn off the machine. Even the low rpm push out air. The key you engine is having air assisted in insted of sucked.
@ChargerMiles007 If your machine idles at 1500 and it is geared 6:1 then your charger is spinning at 9000 rpms. touch the throtle and bring it to 3000+ rpm for a brake torque (I am using it for a drag application) and you double the chargers rpms to 1600rpms. Lay on the throtle and watch your charger climb 6x your rpms
Yep, the Centrifugal blower has to spin fast to do the job!
I don't know how long it would survive revving up and down a lot, as the rpm change would put a lot of stress on the blades. Aircraft used a torsion spring or a fluid drive to help out with that. A Turbo-charger gets rid of that problem, but adds a few others.
Yes it operates like a 2 stroke, as it takes air in and out every turn of the crank. It doesn't fire it though, it just feeds it into the engine that does burn it.
I remember seeing 2 strokes with valves maybe 10 years ago in popular mechanics, so apparently it is possible, but they have to be supercharged (or Turbo) to make the mixture flow into the cylinder. My 2 stroke will fire 3 times only without the blower attached, then the air is gone.
Yes, thats right, I have a steel plug in the spark plug hole, and the magneto etc. is removed. The first time I ran it with an engine, I didn't even have a flywheel on it.
I drive it with a #35 chain, at the same speed as the engine ( 1 to 1 ) Using chain I can vary the timing of the pressure pulse from the "supercharger" into the 2 stroke engine, so the pressure builds up right as the inlet ports are opening. I don't think a belt would work as well in that respect.
Neat experiment but you will not get much air into the cyl. to pressurise (or out) with the little valves & all the turns in the ports. The concept is not new. For MANY years people have used one or more cyls. on a multi cyl. engine as a compressor. I have a friend who has a 3cyl rotary aircraft engine from the '30's with one cyl. set up as compressor. Really neat. Anyway, keep up the work & good luck.
muhammadisasissy 1 year ago
@muhammadisasissy
Yes, you are right, this is big and heavy, and doesn't put out a whole lot of air, but it was the simplest way I could figure out, to get the job done. A mini Roots is a hard item to come by at a scrap yard! :)
ChargerMiles007 1 year ago
@ChargerMiles007 Try a smog pump.You can buy Dick Datson,s book "Supercharging Small Engines" for about $15.00 on ebay. They are the Gator Supercharger guys. Tells how to build a blower for about $100.00. Easy and you only need simple hand tools and some parts from a Toro leaf blower. Too Cool.
muhammadisasissy 1 year ago
@muhammadisasissy
Hey, thanks for sharing that info! :)
I will have to look into that.
I will have to keep my eyes open for leaf blowers at the scrap yards!
ChargerMiles007 1 year ago
That is a HEAVY supercharger!!!!!!! But SMART. I am building a drag racing machine and using a 4.5hp. I am supercharging it. I went to the vaccum store and got a decent size motor. Those things blow!! I told the owner what I am using it for and he gave it to me in turn I put his name on my machine. I am sponsored which is sweet. I just had a motor donated too. The hardest part about using the Vaccum motor was I wanted to reuse the electric driveshaft. I used a grinder and removed the copper.
skylartjsayers 1 year ago
@skylartjsayers
The vacuum will put out lots of air, but it has to rev very high to do so!
I have a vid where I show one we superchargered with a modified car Turbo, but even at 6:1 belts, it still doesn't really turn fast enough to build much boost.
ChargerMiles007 1 year ago
@ChargerMiles007 I am using a 2 sroke... higher rpms and the gearing is key. The fan blows as long as air is going in and it is turning which at low or high rpms is beter than pure atmospheric pressure. On vehicle applications the boost has to build with rpm.
skylartjsayers 1 year ago
@ChargerMiles007 A cvt engages at almost 4000 rpms when the engine is tuned for lets say 10000 rpm. So the boost is essential at 4000 rpms. 4000 rpm with the charger geared at 6:1 has you fan pushing at 24 000 rpms. Worst case sceneario you dont recieve significant boost till your highend. It is better than no boost and I think the shear wieght reduction of my concept makes it ideal. It wieghs as much as a baseball.
skylartjsayers 1 year ago
@ChargerMiles007 But I like your concept. Maybe if you had a light wieght pistion pump manufactured it would be ideal for an application but using a cast iron or aluminum block head and crankshaft is not nessiarry ideal for commpressing air beacuse it was made for a heavy duty application - harnessing an explosion. Maybe a pump off an air compressor would work if were lighter. idk
skylartjsayers 1 year ago
@ChargerMiles007 Do me a favour, if you have a larger vaccum (as I have a larger motor) turn it on, put your hand over the exhaust. keep it there and turn off the machine. Even the low rpm push out air. The key you engine is having air assisted in insted of sucked.
skylartjsayers 1 year ago
@ChargerMiles007 If your machine idles at 1500 and it is geared 6:1 then your charger is spinning at 9000 rpms. touch the throtle and bring it to 3000+ rpm for a brake torque (I am using it for a drag application) and you double the chargers rpms to 1600rpms. Lay on the throtle and watch your charger climb 6x your rpms
skylartjsayers 1 year ago
@skylartjsayers
Yep, the Centrifugal blower has to spin fast to do the job!
I don't know how long it would survive revving up and down a lot, as the rpm change would put a lot of stress on the blades. Aircraft used a torsion spring or a fluid drive to help out with that. A Turbo-charger gets rid of that problem, but adds a few others.
ChargerMiles007 1 year ago
So it's a two stroke with valves!
cool 5 stars!
roboman79 2 years ago
Yes and No.
Yes it operates like a 2 stroke, as it takes air in and out every turn of the crank. It doesn't fire it though, it just feeds it into the engine that does burn it.
I remember seeing 2 strokes with valves maybe 10 years ago in popular mechanics, so apparently it is possible, but they have to be supercharged (or Turbo) to make the mixture flow into the cylinder. My 2 stroke will fire 3 times only without the blower attached, then the air is gone.
ChargerMiles007 2 years ago
No spark, right--it is just meant to pump into the next engine. Must be belt driven off the next engine. I think.... Hehhehee.
BlakeMason2 2 years ago
Yes, thats right, I have a steel plug in the spark plug hole, and the magneto etc. is removed. The first time I ran it with an engine, I didn't even have a flywheel on it.
I drive it with a #35 chain, at the same speed as the engine ( 1 to 1 ) Using chain I can vary the timing of the pressure pulse from the "supercharger" into the 2 stroke engine, so the pressure builds up right as the inlet ports are opening. I don't think a belt would work as well in that respect.
ChargerMiles007 2 years ago
Pretty interesting, liek to see these running!
CSAKvids 2 years ago
Yes, I will get all these running again, as time permits. Most of these engines are about 10 years old, except the "Crecy" that I am still building.
ChargerMiles007 2 years ago