This is a run-up of my home built turbocharger turbojet engine. Long, but maybe of some interest to other engine builders. It is quite old now and dated somewhat and I now know far more about jet engines than I did then. Please go easy on me guys... It is my first video!
I would like to issue a challenge to all fellow Do it Yourself turbojet engine builders and brushless electric R/C park flyer hobbiests/manufacturers out there.
Please comment and discuss the feasibility of mounting a small "outrunner" style permanent magnet brushless electric motor to the compressor side of this and similar engines. I realize that shaft harmonics and bearing limitations will play a very significant role in whether or not such a motor/generator combination would hang together at 140000 RPM or more. Of course, associated power electronics with the ability to switch from starter motor to DC generator would need to be designed as well to efficiently (relatively speaking) produce electricity at these ultra high speeds.
Such a device would mimic some of the hybrid turbocharger or "electrically assisted turbochargers" that have been developed by Garrett and others in recent years. These have been designed, developed and built to reduce "turbo lag" and recover wasted energy in the form of electricity with the intention of supplementing the charging system in vehicles. They have not quite made it to market yet in any production vehicles that I know of. I am crossing my fingers!
A hybrid turbocharger in my opinion is the Holy Grail for DIY turbojet enthusiasts.
Once this exists as an off the shelf device, a whole world of potential uses opens up!
An inexpensive, simple, robust turbojet engine! Heat and electricity with only one moving part!
Imagine a tiny turbocharger based boiler in your basement that would heat your home, heat your domestic water AND charge your batteries in an off-grid or grid tied electrical system.
It would easily burn almost any conventional fuel including natural gas, propane, diesel, kerosene, waste oil, waste vegetable oil, bio-diesel, pellets, garbage and even wood logs as has been proven with the proof of concept device built by myself and Mark Nye at Nye Manufacturing and featured on The Discovery Channel's Daily Planet.
Your comments and discussions about how a PM motor generator could be adapted to this task are anticipated.
As promised, I am currently (slowly) working on a large afterburning VT-50 based engine (actually three of them) that will hopefully produce a combined two or three hundred pounds of thrust and be featured on Youtube soon.
I would like to run all three together in a stretched Quad ATV or mini dragster to take around to the car shows and make some noise. My concept for this engine will to both fuel and lubricate it with waste motor oil. Hopefully I will be able to offer construction plans and combustion chamber kits if it is successful and interest warrants it.
Thanks for looking! Good luck with your projects!
CH-200 First Flight Jan 17 2009
Zenair CH-200 with Continental O-300 six cylinder and Warp Drive prop now owned by Greg Vosper and Paul Eyles. A work in progress... The airplane is presently based at Brampton Airport in Brampton,Ontario,Canada.
Many thanks to the helpful members of RAA Chapter 41 for their help, encouragement and assistance in putting this nice little airplane back in the air. This is the "first" flight since we purchased it in late 2008. Lots of little fixes left to do, but at least it flies...
RK CONCEPTS Chain Bike 08.01.2009
RK Concepts Chain Bike. (www.rkconcepts.com)
This bike was entered into the 2009 AMD World Championship Motorcycle Build Contest. Rafik Kaissi conceived & built this bike from scratch out of his apartment garage by himself.
Turbo vs. Supercharged Camry
A look at a turbo 5SFTE camry and a supercharged 1MZFE camry. turbo camry is a 95 4 door, SC camry is a 98 4 door. Both have 5 speed manual transmissions, the turbo camry is a 4 cylinder, the SC is a 6 cylinder. PLEASE NOTE - I am not trying to showcase either car as fast - I don't really think either car is all that fast - it is merely a compare video for my friends :)
Turbine Engine: full power ... LOUD!
This is more film of the GE LM1500 gas turbine engine running at the S&S Turbines open-air test cell.
All the noise in the beginning is made by the start cart, which is a 90Hp turbine engine. Even when you hear the LM1500 start to wind up, it's not even running until you see the heat waves coming out the back of it.
This happens when the operator opens the fuel valve at around 2,000 rpm.
In the middle of the video, when the noise in an unbearable shriek, the engine is turning just over 7000 rpm, and is blowing hot air out the jetpipe to the tune of a little more than 15 thousand horsepower.
The air flow through the engine at full power is about 150 pounds per second.
In the view of the control room screen, the numbers are as follows from left to right along the top of the screen:
EGT or Exhaust gas temperature in degrees Celsius, measured just after the last stage of the turbine, which is just behind the second green steel frame holding the engine.
Next is RPM. This engine has basically one rotating shaft, and you can just barely see the 1st stage compressor blades moving on shutdown. Engine RPM is of this common shaft, upon which all compressor and turbine stages are mounted.
5,000 rpm is idle speed for this engine.
Last, on the right, is lube oil pressure, in pounds per square inch. These engines have roller bearings, not journal bearings like a car engine, so oil pressure is mainly an indication of oil flow. A lot of flow is needed, because the oil is used as a coolant for the main bearings. The engine will run with no oil pressure, except the bearings will overheat, so monitoring of oil flow is very important.
This is the same engine you see in "Starting a large turbine engine"
Note: All references to podracers will be deleted.
If you have to ask why, it can't be explained to you.
Porting an eBay 20g turbocharger
The price of this turbo will make it a popular purchase, so I figured I'd air out some tech about ways to improve it. This thing is not for everybody. I wouldn't feel comfortable bolting it on my car the way it comes out of the box. I could complain about its flaws except that so far absolutely none of them have been a deal-breaker for me. To me it's like an empty canvas. I promise to eat those words if it happens, and share my poop. Usually I can easily correct these flaws myself and so can you.
If this thing turns out to perform well with what I do to it... It could easily be a cheap, quick ticket to an 11-second car. Something you could do with a free running 1g, a hacksaw, and about $500 worth of fuel upgrades. Yeah, that would be ridiculous, and I'm bolting it onto a well-modified car... But that being possible speaks volumes for what a DSM can really do.
This is no big deal to me. I'd rather guinea pig my car for you in HD so you guys can decide whether or not you'd spend your money on this. Really it's an experiment because this isn't my daily-driver, and it contributes to building a better Colt.
Tools I used involve:
Milwaukee model ???? 1/4" straight-shaft electric DIY grinder
Cone and ball-shaped double-cut burs
180 grit high-speed flap wheel
Dremel with a flex-shaft and a tiny 320-grit flap wheel
a zip tie
10mm combination wrench
tiny flat-blade screwdriver (00) for the e-clip on the wastegate