RE: What do you think of FORMOST 150 ?
I believe we still have a kit lying around.
Posted on: 8/31/2012 2:47 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11212375

RE: What do you think about JETLEGEND L39?
Thanks, I like it a LOT, even with this 2 easy flights. It flies easier then my PA F-15, and would be a very good demo model. Even now I`m thinking of maybe selling my F-15 and order a C&C Model L-39 with a 2011 color scheme (see attached picture) as own and Demo model. I really love that striping and even my old P120 will fit there that airframe is somewhat lighter (they say), later when I saved some money a upgrade to a P140RX [8D] But that`s maybe for this winter first another project after the vacation. Things to do for next flights: - repairing/installing the LH MLG and correcting the RH MLG so these will never can come loose again, - removing some lead from the nose, - again a complete check of the airframe and all hinges, screws etc. FLY!!!!!!!!!! Next flights gear up and some more envelop testing [:)] Grt, Berto.
Posted on: 7/6/2012 3:35 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11144949

RE: What do you think about JETLEGEND L39?
Oh yes, our JL L-39 has flown [:D] Finally, we still had a LH main gear break out on the first taxi run, all scres gone [X(] but after repairing it we did 2 flights. Both with gear out there gear down nipple broke during the taxi run. The L-39 with 120SX is well powered enad with this combo it`s a real scale flier. Flown it of a militay base but I`m not afraid to fly it from a 80 or 100 mtr grass strip with this set up. Had placed some 200 grams of lead extra in the nose but the next time I will remove some because it felt a little nose heavy in the turns. Als I had 2 clicks of nose up in the elevator to fly level. With only 2 clicks of left aileron it flies level. Weight with the complete cockpit is around 15,5kg empty. I will measure it some time again what the exact weight is. 1ste stage of flaps at a slow speeds, give just a very minor pitch op, full flaps a little more but not much so very neutral with the flaps. Speedbrake also, no pitch change during selection of the this. The doors stayed close durign flight, I`ve installen some what longer Fei Bao cilinders on the doors. With full power level flight and then vertical it climbed easely to +/- 150/200 mtrs, so power enough. Only did de landings with 1ste stage of flaps. Next time with working gears and full flaps and speed brake. I have to say a very easy plane to fly with very nice characteristcs. Next time a more powerfull flight with some rolls, loops and inverted flights. So this plane is ready to participate at Jets Over Pampa [8D] Grt, Berto.
Posted on: 7/5/2012 11:27 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11144885

RE: Setting up air brakes !
The Wheel brakes on my F-15 are operated by a switch OR the elevator. The switch I use for start up etc. so the plane will stand still of I start and test the engine. During flying and gear up the brakes can not be actived there I mixed them so that with gear up the wheel brake is disconnected. During landing with gear down the wheel brakes can be operated by giving full elevator down (brakes come on at +/- 80% elevator), release the elevator and the brakes are off. In emergency situations and when I have to go down I can flick the switch and have direct full braking capacity when the wheels hit the ground, not the best way, I luckely only needed that one time. This was also the set-up for my first jet the Formost, a Boomerang-like trainer. Grt, Berto.
Posted on: 1/30/2012 7:56 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10934971

RE: What do you think about JETLEGEND L39?
Mhhh, am I really gonna paint the mold lines? I guess so, it just gonne look a lot nicer [:)] Tested with the pitot tube, before -> after
Posted on: 1/24/2012 2:41 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10925677

RE: Printing water transfer decals at home
Here some pictures form my home made decals on my F-15 I do it this way, - print the decals, - spray the complete decal paper with clear fernish from a spray can (if for methanol models use methanol resistance paint), - cut out the decals, - place it in some warm water (I said warm not boiling [;)] ), - wet the surface where the decals has to come, - when the back of the decal just loosens I place the decal on the airframe, slide it from teh back paper on the model, - just wipe the decal dry from the middle to the sides, - and done (for a better finish you should spray it with clear fernish again but there my model is not painted glossy I didn`t do that). And it stays well on even with +250 km/hr flight [:D]
Posted on: 1/24/2012 7:21 AM by Author "Bosmodelair" in the forum "Tips & Techniques"
http://www.rcuniverse.com/forum/fb.asp?m=10924849

RE: What do you think about JETLEGEND L39?
Some photo`s
Posted on: 1/24/2012 7:03 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10924813

RE: What do you think about JETLEGEND L39?
I have the 2 delivered air tanks in it. The gear still works at 5 bar (72 psi) on the ground, but I think I need more in the air, guess about 8 bar (116psi). But 9-10 bar (130-145psi) also wouldn`t be a problem.
Posted on: 1/21/2012 4:54 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10919633

RE: What do you think about JETLEGEND L39?
Hye to all, thanks for the reply`s. I now a 160 is a great turbine for this bird but as I see the vid`s I think a 120 also performs well, even from our grass strip (have to sya it`s very short grass with a concrete like surface below). Also must of the flyers put`s in the biggest turbine that is possible tot get a 1 to 1 power / weigth ratio. But with gas planes this almost never happens [8|] Also in the real airplanes the power / weight ratio is much less then we use, So mine will be more scale ;-) I`ve also calculated the power to weight ratio for my F-15 and this L-39 and that is almost the same. Don`t forget that the P120 puts out almost 13,5kg instead of 12 kg. We will see how it reacts and fly [:D] @ E.N.T., yep, I have to be always in the envelop, but that counts for every plane. A 160 will save it, maybe, but stay within the envelop is always priority 1, vene with a 160. @ bluescoobydoo, I knew that everything must be in front as much as possible. Therefor I even modify the air intake to place the turbine even 2 to 3cm more to teh front. The reciever LiPo`s are placed in the nose in front of the retracted nose gear. Just as all other stuff. What helps by my L-39 is that the FEJ cockpit ands pilots have a total weight of 900 gram, this helps a lot. I`m even affraid maybe a little to much but I have to check that with all in place and the UAT filled. @ passagealanglaise, Ah, my P120 will almost do the same as your Kingtech 140. As long as I get the 13,5kg of thrust that`s stated in the manual [8D] Grt, Berto.
Posted on: 1/19/2012 2:36 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10916613

RE: What do you think about JETLEGEND L39?
That was my guess refering to the steep climb after take off. We will see how it will perform with the P120SX, otherwise we keep the turbine, will do good in my PA F-15 which is now powered by an old first generation P120 [8D] Grt, Berto.
Posted on: 1/18/2012 8:08 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10915093

RE: What do you think about JETLEGEND L39?
Hye Alain, that`s really looking good, what kind of engine are you using? And thanks, you also Gary. There it is a demo model I hope I can fly a lot with it, I therefor hope it won`t be sold quick and I can fly with it this complete season. We will see what happens. Nut I`m looking forward to his first flight, hope somewhere end of februari / begin of march. I`ll keep you posted. Grt, Berto.
Posted on: 1/18/2012 6:06 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10914939

RE: What do you think about JETLEGEND L39?
Almost, almost finished........................................ [:D]
Posted on: 1/18/2012 3:17 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10914793

RE: What do you think about JETLEGEND L39?
Total dry weight (UAT full) off the L-39 will be just under the 15kg (33lbs). Best wishes and a happy new year for 2012. Grt, Berto.
Posted on: 1/9/2012 11:46 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10884038

RE: What do you think about JETLEGEND L39?
Another thing done. UAT, pump and valves mounted. Now rerouting the wires (again). Things to be done: - mounting reciver LiPo box in front of the nose, - making a hole in the top By-Pass duct for the turbine wiring, - mounting the turbine with bolts and nuts instead of the temporary screws, - inspection of one the leaking main door cylinder, - install some wheel collars for reducing air flow on the gears and doors, - screwing the pilots to their seat and the cockpit floor, - balance for the correct CG, - .............................. pfffff, I think that was it [:D] almost at the ARF status [:)]
Posted on: 12/24/2011 1:03 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10872663

RE: What do you think about JETLEGEND L39?
Hye Shaz, Thanks, I gonna try to push the 4mm over the UAT nipple, can be done I also have it this way on my F-15. Grt, Berto.
Posted on: 12/16/2011 10:32 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10862461

RE: What do you think about JETLEGEND L39?
And some set up for the hopper, pump and valves.
Posted on: 12/11/2011 1:54 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10854557

RE: What do you think about JETLEGEND L39?
And it works [:D] http://www.youtube.com/watch?feature=player_profilepage&v=W2qHmP5iMLw Now have to do some adjustments in speed and delay. Almost last thing to do: installing turbine & components.
Posted on: 12/10/2011 1:28 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10853251

RE: What do you think about JETLEGEND L39?
And I have almost all stuff I need to make the L-39 flyable. The P120SX is on the work bench, and all air switches + servo`s fastened.
Posted on: 12/9/2011 2:28 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10851956

RE: What do you think about JETLEGEND L39?
Hye Brian, no no, no slow down, have enough to do on other things so this L-39 has to finish soon. Goal is to have it completely ready end of this year, picked up from the the shop the last remaining stuff, so now I almost have everything to make this bird complete. The F-15 is a lovely airplane, I wanted to sell it for some other jet but still haddend the balls for it. I`m affraid that when I sell it I will miss him and his looks, so I have to do it with a company jet besides it [:D] (till this one will be sold [:o] ). On the F-15 I also want to install wheel gear doors but that will be something for jan. 2012 [;)] Grt, Berto.
Posted on: 12/8/2011 3:09 PM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10850376

RE: What do you think about JETLEGEND L39?
To save some more weight (I hope) the 2 reciever LiPo`s will be placed in the nose. And almost finished main wheel door installation.
Posted on: 12/8/2011 3:40 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10847809

RE: What do you think about JETLEGEND L39?
Wheels and doors finished. this evening gonna pick up the servo`s and air switches with will be controlled by a seqeuncer. + get the turbine to my hobby room.
Posted on: 12/8/2011 3:38 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10849335

RE: What do you think about JETLEGEND L39?
That`s to bad there was no foamy with it [:o] [:)] I`m planning to use most of the decals from the kit but have to sort out if this will work with the planed shop name on the plane. Maybe add some home made decals like no step/no push etc. We will see how it will be sorted out. Gonna try to install the main gear door cilinders this evening and maybe making a plate for the servo controlled air switches and Jet Tronic geardoor sequencer. Then it`s almost time to install the engine en components. Grt, Berto.
Posted on: 12/6/2011 5:10 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10845695

RE: What do you think about JETLEGEND L39?
No, a customer is building a FEJ L-39 scale 1:5,5 but he didn`t liked the FEJ cockpit and pilots, wasn`t scale enough for him. So we took over his cockpit & pilots and made it fit in the JL L-39, a little scale difference but it looks better than a empty cockpit [:D] Grt, Berto.
Posted on: 12/6/2011 3:33 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10845614

RE: What do you think about JETLEGEND L39?
Hye Brian, I believe it`s a 15 or 20 kg/cm servo. The decals were loose in the box, I didn`t had to remove them. Tailormade have very nice decals for this bird but there this will be a demo plane for our shop we keep it "clean". Grt, Berto.
Posted on: 12/6/2011 2:13 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10845573

RE: What do you think about JETLEGEND L39?
Didn`t do much updates here but that doesn`t mean I`m not working on the L-39. I`m almost finished, well almost, I had it on the scale and the total weight without fuel will be +/- 14 kg (30-31 lbs) I hope. I only need about 200 grams of lead in the nose (because the complete cockpits weights 800 grams). See here some pictures of the plane.
Posted on: 12/5/2011 4:08 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10843781

RE: What do you think about JETLEGEND L39?
The rudder will be somewhat different than JL opted. The servo will be pushed directly on the rudder.
Posted on: 10/4/2011 7:32 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10747911

RE: What do you think about JETLEGEND L39?
I started building the JL L-39 a week ago, this will be a demo model for our shop.
Posted on: 10/4/2011 7:28 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10747907

RE: How to make a $120 ARF priceless...
And still it`s going. Not as strong as new but it flies. I stopped counting the flight numbers at 200 flights and over 25 hrs [:D]
Posted on: 7/4/2011 3:18 AM by Author "Bosmodelair" in the forum "Crash & Rebuild"
http://www.rcuniverse.com/forum/fb.asp?m=10605068

RE: Simple Smoke System set up
My first test with my gasstart Jetcat 120 and pressurized with the gas inlet: [youtube]http://www.youtube.com/watch?v=PpIPjrtx_mQ[/youtube] Have to fine tune the set up more and then build it in the airframe somewere [8|]
Posted on: 7/3/2011 12:14 AM by Author "Bosmodelair" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10603535

RE: Let's See Your Luftwaffe Birds!!!
Here our v2 of the Pfeil, the photo shown earlier is the same plane but then during his Overhaul. http://www.youtube.com/watch?v=601kBYAV54Y
Posted on: 5/31/2011 10:06 PM by Author "Bosmodelair" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10551090