imperio

My Feedback: (5)

finally got my JL F-22 deleivered from dhl n the box looked like they used it for a tow target at a missle range[X(], the rear fusalage went through the box at the back of the f-22 where its pointed n sharp, the front half knocked a hole in the bottom of the box at the back of the fusalage where it blolts front half to the back half, and a big hole on one side through both inner n outer card board as big as my fist???? ****!!, anyway seeing the box was a heart stopper n seeing the model poking out of 2 different holes was also heart stopping, but to jetlegends credit n a testiment to how tough this model really is the damage was so slight on the front half of the fuse where it bolts together n the corner its not even worth messing with, and there is no other damage that ive founf so far, n thank u god i say to that, but im gonna take some pics n post them of the box, because seeing this box its hard to beleive that nothing more happened than the very minor scapes on the corner of the front fuse where it bolts together n the corner , im also gonna send dhl some pics those mother ****ers[:@] the box pics will be n my profile,

johnls

Here is link to my Simjet 3000 powered Raptor, at Bickley Jets (UK) this weekend.

http://www.youtube.com/watch?v=cEgyQVn6nd4

John

imperio

My Feedback: (5)

nice performance on the engine, smooth pilot, i know a fellow pattern n 3d pilot when i see one, very smooth great job keeping the jet in close, my freind Shawn Mcmurtry flys alot of pattern with me n his dad Mike McMurtry Mike owns a hobby shop in okla city n Shawn has won the toc several times, have u done any competiton flying pattern 3d imac heli 3d? if u dont mind id really like some pics of ur engine support equip mounting positions pics of the engine bay plz sir?

fastturbinejets

I also thought this plane would be hard to see. This is my solution. I should have my p120 tomorrow. I will post video of my lil red wagon.

mikedenilin

My Feedback: (67)

Here are some photos our new F-22 flown by our member Barry Hou at So. California high desert .

Global Jet /JL F-22 ARF PRO with Jetcat 120SX, Custom painted with camouflage enhancement and extra large tanks.

I will ask him to chime in and tell us more about his flights, C.G set up, installation setup etc.

Mike

fastturbinejets

sounds good, see if he has any video. great looking jet!

fastturbinejets

Here is some poor video quality. This is the 3rd flight http://www.youtube.com/watch?v=OFzOflxm3DE

Mavrik!

K170 engine install JL F22

Mav

paulrcpilot-RCU

My Feedback: (32)

Looks like the 22 makes for a good flying airframe. I hope to have mine soon I ordered from GJC back in January I got the ARF Pro with everything. There is good information on this site and I am soaking it all up.

Paul

Mavrik!

Paul,

Indeed. I wil be maiden mine in the next 2 weeks!

Flying pics to follow.

Anyone know the cog of the top of their heads?

Mav

marquisvns

Hi Mav! Here are a few shots by Ken Simmons.

Barry

marquisvns

a few more..

mikedenilin

My Feedback: (67)

Here are some messageS just received from a customer with GJC F-22. There are a lot of useful information in his report.
"
Hi Guys,

The Global JL F-22 had its maiden flight yesterday (Thursday) in Altona! It has a JetCat Titan SE (36Lbs.), a Tamjets bifurcated pipe, and a Futaba S-Bus control system. Even though I set this one up exactly the same as the one I have in Hawaii, a couple of adjustments are now required like airbrake elevator trim as compensation for the addition of inboard deflected rudders during deployment of the crow airbrake, as well as the stabs are not quite perfectly aligned at neutral giving a slight right roll which I trimmed out easily. On the whole a very successful 5 minute flight, followed by the F-22’s characteristic planted landing to which I have become so accustomed in the winters! The plane seems a tad ‘heavier’ here with the increased altitude above sea level though it is the same weight as the other one. It was nice to have a good landing after the 3 fiasco landings I produced with the Flash on Wednesday here in Winnipeg!

The F-22’s flight was at only 50 to 75% thrust ( I wanted to inspect the rudders and fins after a flight before trying faster speeds) and it used 60% of the 3.4 L fuel load. I suspect it might be a touch nose heavy but subsequent flights will yield that data. The brake tubing needs to be guarded as it wants to touch the wheels when retracted and has started to wear a bit on one wheel… All in all a very nice plane…pardon me while I break my own arm patting myself on the back J . It has been a long time in development but the result was worth the extra effort put into it!!! Once the little idiosyncrasies are worked through I hope to acquire a 3 axis S-bus gyro (now in limited release in Europe) to add to the plane and maybe some thrust vector nozzles… The one that Tim flies (now in Las Vegas) can do AMAZING things with those added functions!



Thanks to Dave Murray and Mike Lin (Global Jet Club) for their support in the effort, as well as Duke and the Hawaii gang, without whom this project would have been shelved long ago!



Len
"

Mavrik!

Barry,

Thx for sharing awesome pics!

What elevator compensation is required for flaps? I plan to run 20mm of flap.

Also has anyone tried crow set up?

Mav

Mavrik!

Lastly my JL F22 came out 15kg dry? No rudder servos.

Is this the normal dry weight? The K 170 is same weight as a P160, so should be similar weight to other JL F22 I would have thought!

Just seems damn heavy to me. Take of weight will be 18.5/19kg!

Mav

marquisvns

Mav, I have 6% of up, both 1/2 and full flaps.

Mavrik!

Hmmm normally flap causes a pitch up attitude?

I guess with the flaps so rearward on the F22 it causes the nose to pitch down like an elevator would?

Will do the same then!

Thx Mav

marquisvns

Yes, with flaps alone, the raptor will sink.

Barry

Mavrik!

What is best COG for F22?


Mav

marquisvns

Hi Mav, I like how it lands at 21.7cm. I remember I started at the recommended 20cm from the leading edge and was way to nose heavy for me and I spent too many flights flying ass heavy at probably around 23cm. Anyway, start from that, I think you may like it.

Regards,
Barry

Mavrik!

Thx Barry, I have been told various COG from 200mm to 300mm? I am amazed that 230mm would feel tail heavy and 217mm feels just right. Do you find the F22 that sensitive to COG changes? I have added a 3rd fuel tank to mine (flash wing tank 1.4L) which will act like a second UAT meaning I can drain the main tanks dry. It sits in front of turbine meaning I will be quite nose heavy on take off. I have COG with this tank half full.

Be interesting to feel any COG changes during flight as main tanks also sit forward of the recommended 200mm COG! Just need some decent Sydney weather to do the maiden next few weeks!

Mav

marquisvns

Hi Mav, the 22 will fly well at a wide margin of CG. Problem with JL22 is that 80% of both main tanks are forward of CG and it'll grow real tail heavy upon landing. If the CG is too aft you're gonna have to expect to release down elevator to flare, not fun, but doable. I suppose the down pitch effect of flaps may compensate this upon landing, but take off will probably be another unnecessary drama. I later used flight mode for different elevator trim positions to overcome this. But since I moved it forward to 217, I find it more manageable without the trouble of various trim settings.

Cheers,
Barry

Mavrik!

Barry,

I am currently at 230 mm. Will probably land early to measure fuel consumption so will end being more nose heavy in any case.

Will become tail heavy if all fuel is used by landing. I will be using flaps with approx 6mm up elevator compensation at full 20mm flaps.

Running elevons with ailerons.

Will see how this pans out!

Mav

ron Sweeney

Hi All, the c.of g. debate interests me. I have had little if anything good to say about this model for reasons previously expressed. I advertised mine for sale, unflown for under 2/3 rds its' original cost with no takers so I have decided to try and fly it and risk losing it rather than giving it away.
I fly off grass with no access to tarmac. I have studied many many videos of this model and they all have one thing in common: an exceedingly fast and extended take off run prior to rotation.
I have a new 30 pound rated Simjet fitted. My first taxi trials revealed an unbelievable lack of thrust. The model simply would not accelerate passed a fast taxi speed. I came to the conclusion that the by-pass system whilst no doubt efficient in the air was seriously restricting thrust on the ground. This theory proved correct when I removed it and fitted a simple bell mouth to the thrust tube. The difference was amazing but still not what I thought was adequate for a confident attempt at flight. I note that quite a few US modelers use a substitute to the JL thrust tube. Is this to improve thrust or a safety consideration? I took a look at Johns video taken at Bickley in England in an earlier post. This is one of the best grass strips in the country and he seemed to be really dragging the model off the ground. In the hope that I can reduce the risk I was interested in encouraging an earlier rotation with a slightly rearward c.of.g. Any help will be gratefully received. p.s. The Simjet will confidently fly my TF9J Cougar from my club field so I am happy the engine is ok. Ron

Mavrik!

8 flights on my F22 with P140 Rx. I sold the K170 after seeing fuel economy with a colleague.

Here is a link to Temora Jet thread where you will see flying pics etc.

Also link to you tube same thread where I land at 4.36.

What a hoot of a Jet. Cannot wait to fly it again.

Makes me smile when I fly it LOL

Link below,

http://www.rcuniverse.com/forum/m_11..._2/key_/tm.htm

All F22 pics are of my F22!

My you tube landing at 4.36

http://www.youtube.com/watch?v=iMLfQK_xm4o


Mav