Best rotor blades ?

[joeheli]

Ok every one spit it out! ;D
What is the best rotor blade,and size for gyroplane?

[Chuck Irby]

Jose, you have asked a question that we could discuss for months. Some of your questions would be best answered by your instructor.

How are you doing with your training? How many hours do you have now?

[Aussie_Paul]

WOW!!!! we could have a great flame war with this one!!!!

Aussie Paul.

[GyroRon]

If you Don't have a pre rotator or just want the best blades you can buy I say spotcopter is the best. Just know they cost a lot and take forever to get them.

If you DO have a pre rotator and want great blades and at a great price and ready to ship today, get Dragon wings.

Dragon wings will give better climb and higher top speed over all others. Sportcopters are SMOOTH!

[Chuck Irby]

Ron, you only answered part of Jose's question. Now answer the rest of it.

[GyroRon]

Oh, Size...... well that depends on the gyros expected weight while up flying and where above sea level you plan to fly.

A 1000 pound two place in the Rocky mountains will need longer blades than a ultralight Bensen with a mac and no extras flown on a island near the sea.....

Now for Jose.... Well heck by the time he is done with it, it will have Drop keel, a huge cabin, a tall tail, a Transpoder, Alternator, Bigger wheels and tires, mountain bike braking system, and I am sure I have only touched on about half of it. ;) So for him I am guessing 25 footers. If he leaves it as is I would say probably 22 or 23 footers.

[Chuck Irby]

Jose,

Are you beginning to see now what I meant in my first reply to your question?

[joeheli]

Wow! 1rs round . This is getting better! I was just getting sick of me asking thing ,In a month I am already a senior member!!. Ron That was a good one, that saund like:

"Oh is that an airplane! ,No is a train!, no is Jose and the Super Bensen," That was sweet!.

Ok! enough of " #$$%8"

Second round!!

[quadrirotor]

Actually, the question is: what is the best rotor?
and the answer is: the quadrirotor(four blades rotor!)...
ref:
The performances and efficiency are documented:
Boyette: Rotocraft dec-jan 97-98 p.44.
Magni: Rotocraft dec-jan 00-01 p.27.
and others...
conclusions: better efficiency, better lift, less drag, less (no) vibrations, better flares, stiffer and cheaper blades, less fatigue, better sound and so on etc...
The scisor effect is not well documented, it seems not to be a big issue for semi-rigid rotors.
Sportcopter solved this problem that exists even with two blades rotor...

Price:
Sportcopter 25' 7"----> 1700$ X 2 = 3400$
Sportcopter 30' 8"----> 3900$ X 1 = 3900$

500$ cheaper with four blades! ok use them to have a heavier and more complex rotor head...


and to improve this rotor, you must add some power to the rotor: the BIRD of Dick Degraw---> 90mph cruise on a ea81 stock!...(10% power on the rotor)
and Bensen has done it before!...

AND TO HAVE THE BEST GYRO CONFIGURATION:
to slove the C.G. problem put the engine behind the seats but the prop in tractor position...

http://www.rotaryforum.com/rotary/index.php?board=23;action=display;threadid=151;sta rt=msg1439#msg1439

[quadrirotor]

The Bensen improvment! the "2%"

[joeheli]

See Ron making fun of my super Bensen, and there is
"Turbine Bensen" ;D ;D ;D.

[joeheli]

Hey Ron I got it !! I just made in AutoCat Program
the blue print on how my "Super Bensen" is goin to look
like you say with :" Drop keel, a huge cabin, a tall tail, a Transpoder, Alternator, Bigger wheels and tires, mountain bike braking system"

There is Ladiesss and gentlemannn, boysss and girlssss
"The Super Bensen"

http://www.cartercopters.com/

[joeheli]

;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D

[joeheli]

Oh Chuck Sorry !! I just have 30 min. of flyin. what happen is that the first Saturday was a bad weather, and almost 2 hrs was Ground school :-[ .But Charles toll me that this Saturday He was goin to add the other 30 min. to the normal 1hr fly. I will like to be all the Saturdays ,the only bad thing is that if I go all the Saturday I have to go and sleep with my DOG! and then my wife is goin to DIVORCE me :'(
I may try to give her my AMEX so she will go and buy
Saturday and I will go and FLY.

[Chuck Irby]

Steven,

FYI:

I just received an email from Sport Copter that, in part, reads:

Delivery time is now at 11 weeks, however we have received 4 orders in the past few days so the longer you wait, the delivery time could be even longer as we work on a "first in first out" basis.

Anyone interested, let me know and I'll send you their entire email.

[joeheli]

So quadrirotor:
In your opinion what is the best combination for a Super Bensen (like mine) with the Super reliable Mac 90( Like mine)? ;D ;D

[Chuck Irby]

Jose, my best training came in 30 minute lessons. In case you feel that a one hour session is too much for you at one time, don't be afraid to ask your instructor for a break after 30 minutes.

[joeheli]

Ok Chuch !! you guys are always my "Angel Guard" :'(
Do you like my new Super Bensen?

[Chuck Irby]

Steven,

Do you have experience with DW's? If so, what difference would you expect me to see between 7" x 24' DW's and 7" x 24' Sportys?

[Chuck Irby]

Jose,


I would love to see the drawing you made of your new Super Benson with AutoCAD.

Post it for us!

[MikeBoyette]

Dragon wings of course. Just kidding I would think to find out someone would have to one machine and try all the different makes on it. Obviously it would have to be with the same pilot, same size disk, and same weather conditions. I think a while back Matt Pearson did his own comparison between Sport Rotors and Dragon Wings. Maybe he can post his findings again. If anyone eklse has done this maybe they can post their findings. :)

[MattPearson]

I indeed initially had the new 23 ft Sport Rotors before I bought a set of 23ft DWs for Super Fly. The Sport Rotors were by far the smoothest blades I have ever flown, HOWEVER, the DW's gave better than 100 fpm increase in climb, 7 mph speed increase and would allow the gyro to fly at a slower minimum speed. The BIGGEST difference besides the fact that you can get the DW's immediately, is the overall "feel" of the DWs over the SCs. The DWs give instantaneous response and "feel" as though they are spring loaded. Just look at the video of the Monarch dropping in from over 10 feet!! They are so predictable in how they respond to pilot input
Jim Vaneks did not believe my findings and sent me another set of blades to try which he "tweaked" and also took out some tip weight, but it made no difference. I am now a DW fan for life!
Mike, any word about adding another degree of twist?

[Aussie_Paul]

Thanks for that comparison Matt. Very interesting, and backs up what most people say.

What I would like to see now is a genuine comparison of 30' blades on a 1200 lb gross machine. DW verses SC.

There is now a set of SC blades is Oz, 70 miles from me. The machine that they will be used on is quite some time from completion but hopefully one day I will get to try them against our Oz blades. I offered the builder Mark some free stick time if we could use his SC blades.

A project for down the track.

Aussie Paul.

[Chuck Irby]

Matt,

Thanks a lot for your hands on comparison. That is very helpful.

Incidentally, the price of a set of 24' Sport Rotors is $2000.00 vs $1450 for the Dragon Wings.

In addition, to get the SR's, it'll take a minimum of 11 weeks, per Sport Copter. If I read Steven Kozned correctly, it may take much longer.

Like Matt said, the DW's are in stock, ready to ship.

[Gyrobound]

WHo manufactures Dragon Wing Rotor Blades? I looked on the web under Dragon Wings and got a lot of game hits but not much other useful info.
Scott

[joeheli]

Gyrobound
Air Command International is the one who sell them.

[Chuck Irby]

It's Rotor Flight Dynamics, the builder of the Dominator, that builds the Dragon Wings.

"Ernest Boyette" <rfdlouie@worldnet.att.net>

[Gyrobound]

I see on Air Commands web site that these come in 25 - 28 ft lengths but they also show a 29 foot blade. Do they come any longer?
Scott

[Chuck Irby]

Hey Scott,

RFD does make a 29' set. Mike, Ernie's son, stated that in an earlier post.

What are you building Scott?

[Gyrobound]

Hey, thanks Chuck, I'm not building anything right at the momnet but am very seriously thinking, looking at the finances, at the Sparrow Hawk. It has 30' blades though and I'm going to need all the lift I can get. I'm about 260+ so if I want to get any gas and, after training and 40 hours, passangers I need lift. 8)
Scott

[Chuck Irby]

Hey Scott, you may need blades with an 8" or even 8.5" chord. I believe all DW's are 7". But you'll find out what you need once you really get involved with the SparrowHawk.

[Caribean_gyro]

;D
guys just remember when we all started. We didnt have internet and we were just lazy to read books. WE have the same urge for information as Jose. The only problem is he has a keyboard and a DSL hook up.

I hope to call him down this weekend. Now as I told jose and will say it again lets start to walk then run. I have flown Jose machine. she has one of the oldest and most effective prerotator I have use. (dont change it!!) she just need Love and paint. I flew it with brand new Mccutchen blades. The last one sold by the factory.

I call the new owner but he said he is not making then due to cost margins. Any way at the rate the SC/RAF etc are going he could be there also.

Now I want to share what I found with my RAF.

After the recent incident I took them apart and check all bolts. All in perfect condition and no rust. I re aligned the blades, get them both to level at 0.00 balance and visually track in flight 1/2 inch. Here is the amazing thing. Vibration is way down hands of stick move max of 4 inches. 2 inches each side but the center of rotation when I measure it using telescopic gage agains the rotor head is 20 mils out.??

It should be moving and shaking like crazy but is not doing it. I will play omorrow with the shims to get it in center and see how it works.

on my next annual inspection I am going to cecnt the rotor centering in a CMM nachine I think rotation is not center in between of the rotor ears.
Chuck P