Shawn,

By flat rated do you mean at the turbs mid power band range, and would that coincide with the max input acceptance of the MR G/box of the Hybrid?
PeterR-B

Maybe not so daft. Enstrom did this 15 years ago to an F28 and came up with the TH28 which became the 480. It would make more sense to do it with a R44 though.

The engine is mounted where the tailboom normally goes... Would the tailboom be fitted where the piston engine used to be?

They probably wanted to use the exaust gases to do some kind of hot NOTAR System. Now that would be something new.
Somebody asked about the tailboom. He does not have it.
Could it be possible, that he forgot it?

Shawn

Why that? What is the problem with those clutches?

Shawn,
'Vertical C G, Lateral directional stability, negative dihedral, main rotor- CG relationship, C G movin up, governing the turbine'........damn! You been readin' some serious books!
Ah,....BTW ........neither the Allison or the R22 had a centrifugal clutch last time I looked.
Maybe you test-piloted a different model.........

I doubt you could call this thing a derivative of the R-22.

On e-bay it seems that one would have to do most of the mast, swashplate, rotor, tail to finish that project.

Just because he hangs a runout R-22 cabin section on it, it does not mean it is a turbine R-22.

I would call it a derivative, if he puts a turbine in it with a reduction gear to match the speeds and keeps everything else R-22.

A turbine does NOT make any sense for the R-44 as the price would go way up. A new Lycoming 540 for the Raven II is around 48.000,- $
The smallest Turbine, probably some RR 250 model at least around 280.000,-

Besides that the R-44 would not use all the power, the fuel consumption would further reduce endurance, and the price goes up to around 590.000,-. Too close to the Jet-Ranger and MD 500.


3top

The funny thing is that someone seems to have to placed a bid on it! :p

I agree with 3top on this... it's an experimental project that happens to use the cabin of an R22. A conversion project, it is NOT. I'm not sure where all the negativity is coming from. If we never explored or did anything different, where would aviation be today? Isn't that why the X-Prize exist for the next frontier?

For those of you who've been on this forum for a while, you've seen my posts on the "experimental" helicopter topic. Although I choose not to make the attempt personally (time, finances, and lack of mechanical / engineering skills), I admire those who have that kind of passion and ability.

Heck, I'd love to hang a 200-hp turbine off the back of a 300CB, just to have a turbine-powered 300CB!

Oh yeah, I guess that's the 333.

Anyway, the choice of the R22 for this project seems to be driven by the same reason R22s are used almost everywhere - it what they could afford.

Heck, forget R-anything, just consider the rotor system. The teetering rotor offers precious few advantages from an aerodynamic & safety standpoint, yet they are everywhere because they are cheap to buy and operate.

Now how cool would it be to plunk the rotor system from a 300CB on top of that turbine R22? :}

(BTW - I am aware of the two-blade advantages in certain work, but there are lots of Bells and Robinsons out there doing everything but those jobs.)

I am actually surprised that there are not more bids yet.
If the C-18 is in good condition it alone is worth it, though they are not supported by Allison/Rolls Royce anymore.

For those who doubt the project go and look at
http://helicycle.com/

This "R22" would be a logic extension of the Helicycle.

For a more "advanced" concept go to
http://www.rinke-aerospace.com/

Although their product is no more available to the public:

They planned a 2-seater with a 250-turbine, up to 5 blades, etc.
Also a good story about a Turbine-Mini-500 there.
I too admire Experimenters who dare to do Rotorcraft (although I don't care for cheap nonsense..). Just in this case it is no good to call it a "Turbine-R22".

3top
:cool:

I just visited with Stuart Fields who is starting a magazine called Experimental Helicopters.
Stuart and his wife were associated with the gyrocopter magazine for quite a few years.
I visited his house and saw the work :mad::mad:'d done on his Safari (aka Baby Belle), and it was quite good both construction and modifications.
If you're into helicopter experimentation, this is the place to start looking. Issue 1 of the magazine was quite good.

If, and I really mean If you took a similar Turb that did have OEM back up, the R44 would be the ship to try it in, for there looks like plenty o room where the 6 potter would be taken from plus the G/Box would be strong enough? and the fuel tank big enough so all in all, why Not?

Vfr

Shawn, please post the contact information, website, or magazine subscription info.

C20 turbine h300
 

A C20 was fitted into a standard h300 about 12-15 years ago and flew OK.
I will search for photo

I'll post it as a separate thread.

R22 AD Issued 22 Sep 04
 

Interesting...

http://www.airweb.faa.gov/Regulat....909.pdf

hey Rickster, the link don't work. I'm fairly interested in the contents of that file.

This one works


http://www.airweb.faa.gov/Regulatory...8?OpenDocument

Turbine R22
 

Just found this on ebay.com 5924073142.A Robinson R22 with a jet engine,as if it isnt scary enough with a piston.Must have been on steroids.

Done or at least it looks like the same ship.

PW