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View Full Version : Xenon, what do you think?


route66
05-26-2007, 10:54 PM
The Xenon is a remarkable machine, well built, nice simple styling, and great visibility and has the look of a winner. The fact that it has a new aircraft engine is a plus. I had the pleasure of a ride with Scott Tinnesand in Mesa and it did everything well. The 912 (100hp) that is in Rob's machine did all it could with two 200lb. guys at 1100 altitude on an 80* day. It did get us air born with a fair rate of climb of 400-450fpm. Not a hot rod, but did its job and did it well. The 912 with the lightweight aircraft is perfect for people who live and fly without density altitude problems and those that do a lot of solo flying. My reserve is that I live at 7000' and the 912 would not be enough. The 914 (115hp) would be my choice for engine although I will have to wait to see if adding 15 hp will be enough to be viable at my base altitude. Another engine choice is the 912rst (122hp) which while unproven might be the best choice for power to weight.

My overall impression of the Xenon is Wow! Raphael designed a simple, lightweight and functional gyro which has fantastic looks. The cabin is a dream with its space. We had two 200lb. guys and we had space to spare and the seats were what I would call 60 minute seats, (60 minutes being the comfort factor). The visability from the cockpit is great with windows everywhere. The sound levels were impressive as far as gyros go. I watched it fly as a bystander with a couple airport junkies and it didn’t have that loud sound I was used to. The two guys I was sitting with had no idea what a gyro is and when asked about the sound coming from the Xenon, they thought it was a quiet helicopter. I put it more as a loud Cessna.

I wish I could give you more input on its flight characteristics but I was a simple sole taking a demo flight being impressed by a new design. If the 914 has the power and responds even close to how Raphael, Rob and Scott has described I will have one. It is a nice machine and if you say it fast enough the price is a bargain.

What is your impression?

ventana7
05-27-2007, 01:00 PM
Brandon,

Thanks for your honest and wonderful report.

The truth is that everyone who has flown it so far has been very impressed. The more I fly it the more I like it.

As far as the performance difference between a non turbo and turbo I looked up some numbers-- since I live in Colorado I am concerned too.

Phoenix at 1,500' on an 80 degree day with low humidity is about 3,000 foot density altitude. Looking at the 912 performance charts for altitude it shows we are loosing about 25-30 percent of our power as compared to what we have at sea level.

That means the day you flew our 100 hp engine was putting out about 72 hp. The 914 will be putting out 115 hp at Phoenix or Denver or anywhere else up to 15,000'. So you are going from 72 HP to 115 HP- an increase of 43 HP. That is a 60% increase in horsepower. If the machine can climb at 500 fpm with 2 big guys on 72 hp I think it will be a rocket with a Horsepower increase of 60%.

The RST is even more effective with 122 max HP (3 minutes only, then 110 HP continous).

As far as manifold pressure the Rotax 912 performance curve shows about 30 inches at sea level at full power of 5800 rpm. Raphael told me the other day in a static test of the RST they were able to get 45 psi of manifold pressure.
So even at very high altitude the RST should be able to deliver its fully rated max continous HP of 110.

Victor Duarte
05-28-2007, 08:38 AM
Hi Rob, Brandon

i wonder if you asked the earlier xenon owners before you made up your mind.

there were some xenon sold by here but no one flying regularly.

the machine is sweet and can fly well..when it flies. But selling gyros is more than just delivering a bunch of bolts.

I have respect for you and i don't want to rain on your parade nor be a negative person or a jalous person, just telling you to be well informed about all aspects of the xenon we had some echanted persons here that are not enchanted so far.

ScottTinnesand
05-28-2007, 08:52 AM
Victor,

Are you referring to earlier models of the Xenon (with the Hirth F30 powerplant) or are you talking about the current design?

I appreciate your caveat about not being negative, but I feel that your comments would be more constructive and better understood if you provide a little more info than "disenchanted people".

If there are issues to rectify, let's get at it. We'd like all the info you have. Improvements can't be made until they're identified.

Thanks,
Scott

Harry_S.
05-28-2007, 10:21 AM
Victor,

Are you referring to earlier models of the Xenon (with the Hirth F30 powerplant) or are you talking about the current design?

I appreciate your caveat about not being negative, but I feel that your comments would be more constructive and better understood if you provide a little more info than "disenchanted people".

If there are issues to rectify, let's get at it. We'd like all the info you have. Improvements can't be made until they're identified.

Thanks,
Scott



Well put, Scott.

I hate hit and runners.


Cheers :)

Victor Duarte
05-28-2007, 10:56 AM
Hi Scott, harry

i'm not hit and runner, just had connection problems.

ok, first , i have to say that i was interested in the xenon when i saw it, i really didn't know anything about Mr cellier and still don't know him personnally.

the facts are that no one here has a good opinion, not really about the machine, but about the way mr cellier does business.

i cound talk with his ex-test pilot and with one of the very first customers as well as persons that worked with him : saying they have a bad opinion is quite gentle...

if you browse the forum you will find that i have talked about mr cellier and his relationship with mr ackerman about the xenon cabin.

since this time, i felt people thought i was, as said harry, a hit and runner, but i am not, i just took time to talk with informed people and make my own opinion.

mr cellier did what he did, nothing personnal but i wouldn't like a second "don lafleur" in the gyro business.

mr cellier didn't leave good "souvenirs" here and is not wellcome anymore because no one would like to go in business with him, some persons like my friend Mr ackerman that was a very good man lost some money in working with him.

ANYWAY, if mr cellier sincerely tries to do well and forget about the past, then every thing is fine, the xenon is or can be a good machine, and , if mr cellier changes and runs his business correctly, i wish him good luck.

you may think i am a complainer, no, i have just been treated as a liar on this forum and i came back with some nuggets in my pocket.

enough said, you've been warned, i did it because around me no one dares, i do. I have no interest in making the xenon or mr cellier disapear, we need this kind of machine, but like others, i like correctness in business.

Victor Duarte
05-28-2007, 11:01 AM
just one more thing :
have a look at this machine, very similar to xenon isn't it ?

Mr Doleac did it...but he BOUGHT and PAID the moulds to Mr ackerman's son and he has now the right to sell this machine that flies very well.

some persons wil recognize the youg man on the pic.

Brent_Brown
05-28-2007, 03:00 PM
Don't recognize him.

ventana7
05-28-2007, 03:24 PM
Mr. Duarte,

It seems there are two sides to the Ackerman story and I guess it happened a few years ago and it involved Mr. Ackerman before he passed away, not his son who later stepped in.

For you or I to judge it now from hearing one side or the other is ludicrous.

In any event the Xenon cabin has undergone numerous major improvements since then and is being made in Poland by highly qualifed composite fabricators.

Rob

ventana7
05-28-2007, 03:24 PM
Brandon,

Like you I am very anxious to fly the Xenon in Colorado and report actual performance numbers but until we have a turbo model here we can only extrapolate from numbers we already have.

I was having an email conversation with another of our brethern who lives at higher altitude and below is what I mentioned to him.

>>>>>>>>>>>>>>>>>>>>>>>>
So here is what we know so far.

I flew a standard Xenon in Poland with Raphael- it was cold and at sea level- with him at 200 lbs and me at 175 we climbed easily at 800 fpm and cruised at 78 knots (GPS bidirectional averaged readings) at only about 5200 rpm. We did 70 knots on the GPS at 4200 rpm The machine was brand new and we could not go to full throttle as we were at red line at 3/4 throttle. He later added another degree of prop pitch and performance went up as expected. I never measured our take-off roll but it was short.
So that is how the machine performed at sea level with 100 hp available and temps a bit colder than standard ISA conditions.

Since the turbo gives MORE HP than that, (115 to 122 HP) depending on which turbo you go with you should get 15-22% better performance than that. As you know the turbos give virtually sea level performance upto 15,000'.

We have been flying for 2 weeks now in in Phoenix at 1,500 feet. At 85 degrees we have a density altitude of about 3,000'. The Rotax performance graphs tell us we have about 72 HP available at that density altitude.

We are are seeing climbs of 500 fpm and cruise at 5200 of about 65 knots, with Scott 205 lbs and me 175 lbs.

The Phoenix numbers at 3,000' and 72 Hp seem to correlate to the Poland numbers at sea level and 100 HP. That is the Phoenix horsepower is roughly 28% lower than Poland and the climb and cruise are about roughly 28% lower too.

So you have 2 relieable sets of numbers that seem to confirm each other. Since the turbo will deliver sea level performance at your altitude and since it is 15-22% more HP than we have with the 912, I feel confident in saying the turbo models in Flagstaff will climb with a 400 lb payload (plus fuel) at 800-1,000 fpm or and cruise at 80-90 knots.

Obviously the larger blades will add more lift and more speed at the cost of slightly higher workload and possibly a bit of stick shake.

As far as the machine itself -- I can truthfully say that neither myself, nor Scott nor any of the half dozen very knowledgable gyro pilots who have now flown it have found ANYTHING to dislike in its handling.

As you saw, it is simply a dream to fly- no cabin shake, hands off flying once trimmed, almost no stick shake. Huge cabin and quiet.

The few negatives we or others have found have been small things like suggesting chafe protection here or there, or pins or safety wire on some bolts, etc. Those are things we will work on in the near future.

Heron
05-28-2007, 03:41 PM
I think Zeeoo is trying to warn forum mates, fair game!
Whatever business Rafael will conduct from now on it is an entirely different history to me, and I also use the 3 strikes rule.
The Xenon looks to me like a winner and I would like to see the more powerfull version in flight.
The crew put together in the US carries a lot of weigth and I am not talking about Tom MIlton :) but what this guys can do as a team.
Qué será . . .será . . .
Rafael seems to me a fair guy and in time all will be ok, if a mistake was made . . .
thanks
Heron

ScottTinnesand
05-28-2007, 04:56 PM
Victor,

Thank you for your response.

I'm not familiar with the names you mentioned (except for Raphael) or the situations you described. I don't know about the past, but I do believe that "the past does not equal the future" (quote of Tony Robbins).

Regards,
Scott

Xenon-designer
05-30-2007, 01:16 AM
Hi to everyone.

First of all, we are happy to let you discover THE new website : www.celieraviation.eu
Have a nice visit.

NOW : again this ZEEOO french trouble maker !!!
Still this guy don't have the balls to come and talk to me direct, not even show his name. Just he keep telling lies.
I don't have a bad reputation, only for the jalous people that are not even able to fly...
The aircopter machine was inspired from the Xenon, but WE are the owner of the forms as said and repeted again, bought completely at the time of Ackerman father before he passed.
We are now starting to fight his son, has he sold without rights an old version of OUR concept.
The "young" man (no so young by the way) was one of our employe, he signed a confidentiality contract for leaving the company, we shall now make a full research of what he is doing, and if necessary he will be procecuted.

To all, understand that the french market and ultralight world is far different than other countries.
Money is kind a tabou, and success brings jalous people, and gyro community is a bag of crabs.

I feel personally attacked, i request this ZEEOO to call me direct and meet me in France or here at the factory. I cannot let that guy saying lies like that.
But i know he'll never do it.

Lies always return to the sender in negative.
Shall i do the same against ZEEOO ?? Easy...i got informations too...
But I am not at that low level attitude.

But if he changes attitude, we are not bad people, and he will be welcomed to try the Xenon, even if he can't afford one.

I think this forum could be used better. But it is public, and anyone can say anything.

Thanks to the guys that defends the Xenon and its designer.
Without heart and true passion it would never exist.
I needed to be persistant, to keep on track, to believe in it, and not to lessen to guy like the ZEEOO, how are numerous in France...

To Scott, it was a great plesaure and honor to fly with you to demonstrate you the xenon.

You and Rob by loving this machine, makes all our team happy !

Keep fly safe.

Victor Duarte
05-30-2007, 04:56 AM
ok Mr cellier,

you say i'm a lier. i've not the balls.

I write in the name of some people that think exactly what i've said. oh in fact they don't think that, they think you're a crook.
I'm just angry that persons like you that did so wrong here could go and claim "bla bla bla" gossip ...
who has the balls ? those who shut up or those who say the truth ?
I take the risk to be seen as a bad person because the xenon is such a success and no one wants someone to rain on the parade.
I sell nothing, my only interest is truth.

not theballs to meet you ? let me laugh, why don't you come to le bois de la pierre ? i am ready to meet you an hear your explanations and i am ready to meet you when i can, where i can but le bois de la pierre meeting is the only holidays time for me.

i will reply point by point.




Still this guy don't have the balls to come and talk to me direct, not even show his name. Just he keep telling lies.
>>My complete name is on my signature.

I don't have a bad reputation, only for the jalous people that are not even able to fly...
>> then telle me how i heard so bad comments about you ?
it seems, just like people told me, that with you, everyone else is stupid and the fault is always someone else's fault, never yours.

The aircopter machine was inspired from the Xenon, but WE are the owner of the forms as said and repeted again, bought completely at the time of Ackerman father before he passed.
>>FALSE, first you didn't pay mr Acerman for his work, you bought ONE cabin then asked another manufacturer to make a copy, you didn't pay this manufacturer again and, then, you wen to poland to make ANOTHER copy.
Mr DOLEAC BOUGHT the first molds and has the right to sell his machine that is peprfectly designed and TESTED before he sells the kit.
you should prosecute Mr DOLEAC , why dont you ?


The "young" man (no so young by the way) was one of our employe, he signed a confidentiality contract for leaving the company, we shall now make a full research of what he is doing, and if necessary he will be procecuted.
>>> this person is your ex-test pilot and i've talked with him and took a lot of notes to not be accused of lying.

To all, understand that the french market and ultralight world is far different than other countries.
Money is kind a tabou, and success brings jalous people, and gyro community is a bag of crabs.
>>> and i think you are one, you just run and hide but you know very well that NO ONE wants to hear about you here, NOR see you again because you should pay a lot of people for things you never paid.
curious, i never heard bad comments about AVERSO, MAFFRE or DOLEAC.

I feel personally attacked, i request this ZEEOO to call me direct and meet me in France or here at the factory. I cannot let that guy saying lies like that.
But i know he'll never do it.
>>> ok why not ? you wanna try to convince me or threat me ?
you know, when i hear so bad things about someone, i tend to think there's a serious concern about this person.

Lies always return to the sender in negative.
>>> OH YES ! and people that don't pay for the work may face the truth one day.

Shall i do the same against ZEEOO ?? Easy...i got informations too...
But I am not at that low level attitude.
>>> OH OH ... try to frighten me ?? well please , just do it !! i'm curious to know what kind of information you have about me ? .... my god ! you hacked my computer and found porn pics.... bad bad boy.

But if he changes attitude, we are not bad people, and he will be welcomed to try the Xenon, even if he can't afford one.
>>> yes i wanted to try one....before i took my informations.. i can't afford one.... and i add : i'v nothing for sale.

I think this forum could be used better. But it is public, and anyone can say anything.
>>> i can talk about "AIR DRAKKAR" or his normandy friend or the spanish ROBE (an important HARLEY DAVIDSON parts importer), or about the machine you sold in new caledonia, with floats, for ...fire-fighting. but you will certainly say that are lies and that they all are jalous people. But they bought several machines to you..

Thanks to the guys that defends the Xenon and its designer.
>> the xenon is a nice machine, the way it has been done is not as nice.

Without heart and true passion it would never exist.
I needed to be persistant, to keep on track, to believe in it, and not to lessen to guy like the ZEEOO, how are numerous in France...
>>yeah all the french are loosers and complainers... you're the only one that is willing to build a successfull business... and we don't appreciate nice new machines... yeah yeah

i have freedom of speech and i intend to keep it, if you want to prosecute me, then , just do it.

i admit that those things have been said to me by persons that know you, maybe they are wrong maybe they are just angry customers.

give me you pone number please, i will call you when you're in france.

i think i told what i had to say, my goal is not a crusade against you ok, journalists should inquire , it is not my job.

Heron
05-30-2007, 05:02 AM
Raphael (now with proper spelling)
Thanks for coming here and explaining your side of this coin . . .it shows the importance of our Forum (Gyrodom´s grape vine)
You could have chosen the private way but instead you gave us your direct word on the matter. Thank you again.
I hope ZEEOO talks to you and get things straight, we all know that thruts always lies between opinions or perceptions.
The Xenon is one of the best products presented in this last 5 years and deserves the title of Grand Champion.
It is a jewel!
Hope to see you again in person . . .it was a fine experience to me!
Heron
OOps . . .too late!! :(

Vance
05-30-2007, 06:01 AM
Victor is my good friend.

I feel Victor is being attacked and bullied.

In my experience, Victor is creative, compassionate and honest.

In my opinion talking about “balls” demonstrates a lack of social skills.

I have broken bread with Raphael and he seemed like a nice enough fellow.

I know that you can’t make an omelet without breaking some eggs.

I have found it is important to clean up the kitchen.

Thank you, Vance

PTKay
05-30-2007, 06:09 AM
Very strong words were said here.

But Victor, are you sure, that Mr. Ackerman is the designer
of the cabin, or did he just manufacture the mould to Mr. Celiers design ?

It is obvious, that not the person, who is in possession of the moulds,
but the original designer is the owner of the design.

Of course, manufacturing the moulds is a big investment, and if the
person who ordered the moulds (if he really did)
then takes just one copy of the cabin,
and goes on with his design, modifies it and
goes to another manufacturer,
this is not a crime.

So maybe Mr. Doleac bought the mould,
and can use them, but it doesn't mean, he has
the rights to the design.

Victor Duarte
05-30-2007, 06:31 AM
Vance,
you still a good friend, a remarkable person indeed, i regret i can't find more time to spend on the forum.
thank you for making the things cool down and bring me back to moderation.

ok, for me that's all , i said what i had to say and i'm not into a crusade against mr cellier, i reported my impressions and what i could hear , up to you (adults) to make your opinion or not.

a proof that i have nothing against the xenon is that i spoke with a "GRAN CHAMPION" here about the xenon vs the AC3 and he told me that the xenon flies well (once engine problems fixed) and that the xenon should have a better pitch and yaw stability, those are positive comments and i also report them as well.

paul,
a design doesn't only involve molds, it's a global conception and no one says mr cellier isnt the owner of the xenon's design.

if you ask someone to develop tools to produce something , it is a work that is worth to be paid, in my opinion, you think it's not a crime, legally, it is one.
Mr Ackerman asked "sup'aero" shool (a famous aeronautics engineering school in toulouse) to design the cabin, the son showed me all the drawings.

PTKay
05-30-2007, 06:39 AM
...just my $0.02...

PTKay
05-30-2007, 06:51 AM
a design doesn't only involve moulds, it's a global conception and no one says mr cellier isn't the owner of the xenon's design.


Neither you or me, have ever seen the contract between
Mr. Cellier and Mr. Ackerman, if there was any, not just a handshake.

if you ask someone to develop tools to produce something,
it is a work that is worth to be paid, in my opinion,
you think it's not a crime, legally, it is one.
Not necessarily, it could have been a "risk sharing" deal:
"I give the design (idea), you make the mould,
we share risk, we share profits"

Mr Ackerman asked "sup'aero" shool (a famous aeronautics engineering school in toulouse)
to design the cabin, the son showed me all the drawings.

But who's idea it was ???
And for what product ???
A paraplane cabin with ducted fan ???
It is FAR, FAR away from the Xenon...

Victor Duarte
05-30-2007, 07:15 AM
Paul,

i had my dose of "sharing risk" and hand shake crooks in my life, handshakes that end at court, enough said.

BUT i put value in a handshake, it is my honnor, some don't.

One of my principle is that i don't ask someone to work on something if i can't pay him and , once finished, a work must be paid don't you agree ?

you can have financial problems and you may not be able to pay , it already happened to me, but some persons use that as a business method, sadly.

maybe that's because i have been a victim of persons with no honnor that i felt a little ticked.

in addition i knew Mr Ackerman, i worked for him on his website and he was very honnest.

Mr cellier has enough defenders here, i think he is not in danger, i'm a small ant, why so much fear ?

PTKay
05-30-2007, 07:41 AM
Victor,

I am not defending anybody, I hardly know Mr. Celier,
I talked to him once or twice...

...but you also don't know him personally...

;)

Victor Duarte
05-30-2007, 07:53 AM
Paul,
i also don't know Jim Mayfield personnally, but everyone knows his reputation.


when will you come here for a fly-in ?

Udi
05-30-2007, 08:20 AM
...NOW : again this ZEEOO french trouble maker !!!
Still this guy don't have the balls to come and talk to me direct, not even show his name. Just he keep telling lies.
This zeeoo trouble maker is a long time member of this forum, Raphael. I have had many interesting interactions with Victor over the past 3-4 years, and I have no reason to believe he is a liar. Calling our friends liars is not going to make you popular around here - you have to find a better way to settle your disputes with your own people.

Victor -- there is a problem when people blame other people based on hear-say. People can't do anything with the information you are bringing because it seems you were not personally involved with any of it. If you want to bring some credibility to your stories have the people that were actually involved come here and post their information and be ready to back it up with hard facts. Slinging mud at each other doesn't do anyone any good (well, except for the entertainment value).

Udi

gyromike
05-30-2007, 08:41 AM
Good post, Udi.

Victor Duarte
05-30-2007, 09:05 AM
Thank you UDI,
i think i'd better take advise from you and Vance.
Maybe i trust my own honnesty too much.
If it becomes necessary to list names, fine , i have them , but i think it won't be necessary to step in something like this.... just don't call me a liar.
I Think i did my job, some people have a good opinion of Mr cellier, some don't, that's it, i just tried to balance it all, up to him to make bad opinions disapear and i think that , with such good and demanding business partners as americans, he MUST make the balance go on the good side.

i think the polemic is closed, thanks to the persons that give me a chance to talk without being called liar.

i really hope to see plenty of xenon in the US skies and i wish you good flights, good people deserve good machines and good deals.

Dmorris
05-30-2007, 10:23 AM
Victor,

As a prospective Xenon buyer I appreciate the last sentence of your last post. You finished well!

David Morris
Somerset, Ky.

ventana7
05-30-2007, 02:15 PM
Not to digress from this illuminating thread but I flew the xenon solo today and thought I would report some performance numbers:

It was 75 degrees in Phoenix (1490') which makes a density altitude of close to 3,000'. I weigh 175 lbs.

Climb was 800 fpm at 5,800 rpm and cruise at 5400 rpm was 81 mph. speed was calculated with GPS and bidirectional runs averaged.

I did not notice the take-off roll distance but it was pretty short. The difference in acceleration without a second person was VERY significant. On take-off roll I went to full power and the nose popped up so fast and I was not ready for it so I actually reduced power a bit then balanced and took off. It seemed I got to 50 knots take off speed in seconds and was at several hundred feet by mid field.

Scott weighs 200 lbs and we have been flying with about 10 gallons of fuel. To compensate I went to full fuel 23 gallons and added 25 lbs of ballast on the front floor on the passenger side. So I was probably about 100 lbs lighter.

At first I noticed the machine wanting to roll to my side and there is no lateral trim on the xenon. But as soon as I pulled on the fore and aft trim and climbed out I found I could fly hands off. The rotor RPM was about 360 vs about 390 for two up.

The only noticable difference was possibly a bit of cabin shake. That is going from absolutely zero cabin shake with two up to a very tiny amout with 1 up. Still far far less shake than any gyro I have previously flown.

Possibly the most amazing thing about the Xenon is its totally gentle flight habits. Slow flight is about as dramatic as slowing your car down- that is even at 20 knots fwd speed with a reduced throttle- (ie not behind the power curve with full throttle) the machine just slows down - no real high nose attitude, no rotor whop or increased cabin hop or stick shake- nothing except the aircraft slows down.

When a plane infront of me in the pattern did a full stop instead of a touch n go. I just brought the speed to 20 knots on short final and sort of parked in mid air about 1/4 mile from the runway end until he cleared the runway then I resumed a normal descent and landing - totally simple.

Simulated power off landings are a total non event as the high rotor rpm and high inertia blades with the tip weights just give you tons of energy at the flare. Even if you were to mess up and flare high you have lots of stored energy to milk it onto the ground.

It had been 2 years since I had flown gyros so initially Scott had to re-train me a bit. Several times I flared high and in my Sparrowhawk that would have been a very hard landing- in the xenon it was more like a Cessna 172 with lots of float left and even after a high flare you could still coax it down and reflare and touch down very gently.

The other noticable difference is the effect of the very wide landing gear- 90 percent of our flying has been with a 10 knot direct crosswind - not ideal for re-training me-- but even touching down on one wheel first or touching down with significant rudder input is a non -event- The wide gear just pulls the machine to proper runway alignment- it reminds you that you did not have the pedals centered but other than that there is no feeling like you might bouunce side to side and tip over as you can do in a taller or narrower machine.

The more I fly this machine the more I love it!

StanFoster
05-30-2007, 04:36 PM
Rob: Way to go....just enjoy flying the Xenon. This forum is just too full of people wanting to throw negative comments about whatever someone is enjoying flying. It happens way too often while I was flying my RAF, still hear stuff about SparrowHawk,,,and now its Xenon. This BS gets so tiring...I wish most would just go unwind their panties and go fly!


If more people would concentrate on the positive aspects each machine has and dwell on that.....it would be so much better for all.

I am going right now....:angel: Too frustrated reading this stuff.


Stan

Dmorris
05-30-2007, 07:10 PM
Rob,

How do you think the Xenon would have performed one up without the co-pilot weight and with appox. 1/2 fuel?

David Morris

ventana7
05-30-2007, 07:38 PM
David,

A few days ago Scott took up a teenage girl who weighed about 120 lbs. He said the difference from he and I flying with my 175 lbs was significant. Since he felt 55 lbs less was significant I did not want too big a surprise so I added the fuel when I kicked him out.

I figure the net difference from he and I together was close to 100 lbs less weight and as I said the performance went from 500fpm to 800 fpm and the entire response and acceleration was a huge difference. I think taking another 60 lbs of fuel out will make another significant difference.

Roy Davis flew it solo with only a small amount of ballast in Florida- He is a VERY experienced airline pilot and gyro pilot. I suggest you email him or send him a forum message and get his thoughts. His forum name is gyroav8r

Oh by the way all these flights are with doors off- with doors on it is more efficient of course.

Xenon-designer
05-31-2007, 02:52 AM
Thanks Heron.

You are right, this guy before spitting public should better get real infos, and contqact me direct, my phone is public,

Xenon-designer
05-31-2007, 02:58 AM
and see with me what is what. I'll stop reply about that here, so many lies make me sick, i'll wait for his phone call, if he does...
One more exemple of the kind of guy just looking to destroy what great people do. I know in the US some manufacturers and users have faced such words.
I'll keep focused on making the Xenon always better and better, as well on our next projects.
Kindly thanks for the nice welcome in the US.

Xenon-designer
05-31-2007, 03:12 AM
I would like to congratulate Rob and Scott for their work around the Xenon.
They make us (the Celier Aviation team) happy to read the flyings reports.
You (Rob) are writting the right things to describe the gentle caracteristics and forgiveness of the Xenon. One detail, you don't need to put so much weight (25 lbs) when you fly solo, 16 lbs should be enough.

2 weeks ago, i had to make lots of demos in germany, following the airshow of Friedrishhaffen ; it was horrible weather, 15 gusting 30 knots, full cross wind component on hard runway, controlled airport, had to take off on line...found it limit, but still safe. The air was terribly boucy, but i was happy to be in the Xenon as it was dampening all.
22 people including 2 nice womens flew. All apprieciated.
Generally talking the gyro is a great machine to fly, mainly in bad weather.

I want to say a word for SparrowHawk, i appreciated their welcome, and positive attitude;
i encourage all of us to keep highly professionals, to bring this way of flying as natural as flying a Cessna...

Heron
05-31-2007, 06:58 AM
Stan I understand your frustration (I know you a little) but this Forum is full service and should stay multi directional.
I hate to hear some of our fellow keyboard friends get the short end of the stick when dealing with supliers.
After the points are presented I also expect the parties to come to agreement and the audience leave informed of all possibilities.
It seems to me the whole thing is traveling in a good direction.
Xenon is here to stay . . .
thanks
Heron

Brent_Brown
05-31-2007, 09:48 AM
:boink: I only want to read warm pink fuzzy words.

Harry_S.
05-31-2007, 10:34 AM
Rob, Raphael;

Rob, I take it you had ballast to allevaiate your transition to solo flight?! That I understand.

Raphael said you could use less ballast?!

You stated that Roy used ballast while flying solo. Is ballast required to fly the Xenon...solo? Due to no longitudinal trim control?

Cheers :)

Chuck Roberg
05-31-2007, 02:06 PM
You stated that Roy used ballast while flying solo. Is ballast required to fly the Xenon...solo? Due to no longitudinal trim control?

No, it's only to help the pilot get used to the better performance. Then remove some of the weight and fly again. Till there is no weight left. Raphael always flew with no weight.

I'm sure you know what I mean Harry. Same thing most pilots do to get used to flying a 2-place solo the first few times.

ventana7
05-31-2007, 02:28 PM
Ballast is recommended. Raphael flew solo without it. Roy flew with ballast the first few times then flew without it.

I think the flight manual says ballast so that is all I can advise. Draw your own conclusions

Harry_S.
06-01-2007, 05:45 AM
OK...10-4.

It just caught my interest that ballast was being mentioned while solo and nothing about flying solo sans ballast.


Cheers :)