jettset99

My Feedback: (7)

Hi just recieved the Cermark MB339 kit today I will post pics and put a Ramtec os91 combo fly it get turbine waiver and then convert it to turbine and fly it again all with lots of pics, follow along for people who wish to do the same!

bbrundle

My Feedback: (40)

Who are you? Do I know you? I will be following along as we set up a P-80 into our productin kit.

Best Regards


Bill Brundle
Discount Hobby Warehouse Flight Team
Cermark

Veritech

This shold be interesting, mine should be in any day now. I plan to use either a RAM500 class turbine or a RAM 1000, detuned to 13# or course

Please keep us posted on your progress.

Thanks,
Randy

jks

Does anyone know how this plane differs from the DL 339 kit or ARF?
Jim

jettset99

My Feedback: (7)

Here are the first pics very nice kit bad spots are the gear well liners and a couple of the slots for hinges are not so clean also the elevator control horn MUST be replaced for turbine, if your planning on flying it as ducted fan only its fine I have a ideal and will share on this later Ram 500 size motor is all this plane needs anymore is major overkill planes overall size seems fine!

jettset99

My Feedback: (7)

First thing done was to throw in the trash the ca hinges!

Veritech

jks,
AFAIK, these are all the same plane, made by Cermark under license from DL. I am getting mine from Andy Low at Electrodynam.com. It should be in any day now.

jettset99

My Feedback: (7)

Hatch and canopy,8 latches could be a little bit cleaner.. very nice wing,10 servos both under one hatch for flap and alerion.. instructions,10 color simple &nice pictures.. Formers ,10 nice clean install.. paint ,9.5 very clean some fine scrathing... fit and finish of elevators rudder wings,9 only one elevator was a little hard to plug in, Hardware well this was the only real problem of the kit but a simple fix for a few bucks overall Ill rate it from the box to the work bench a 9.5 ! more ratings to follow....

jettset99

My Feedback: (7)

The gear mounts are nice and strong lots of room in the nose section, ok first things first a list of gear to install Im starting off with os 91 ramtec fan, system 2 pipe, spring air gear bvm wheels and brakes jr digital servos 8411 elevator. 8231 rudder and flaps ,3421 alerions , hitec digital 5645 nose stearing,hitec ms85 retract valve and throttle.

Bertie

Is that the same MB339 that had the elevator/stabilizer separate from the airplane and crash at the El Toro Jet Rally a couple weeks ago? I must say that the pilot did a remarkable job of flying it to the ground, keeping it away from the spectators, and keeping it over the dirt. However, after viewing the remains, it appeared the empennage appeared to be under-designed and poorly hinged.

Bertie

jettset99

My Feedback: (7)

Hi yep this is the one the main problem was the guy who built it not the plane Ive learned you cant bust it trust it! the plane crashed with no elevator but survived intact with a broken elevator and some scratches I do know the elevator came off in flight the kit comes with ca hinges even if you use a good pin hinge just take alittle time and drill them and put a screw threw them the old timmers used to dowl hinges in!

jettset99

My Feedback: (7)

Ok very simple keeping in mind that after the waiver is in the mail ill be slaping a Ram 500 in it so its very simple glue in the 2 engine mount rails, the kit came with full ducting for fan and turbine, assemble the fan bypass and I will bolt the system in instead of glueing it in so I can eaisly removed it, this will be done tonight Im estmaiting 1.5 hours or less pics in the morning!

Totall time building 30min...

shanksow

My Feedback: (2)

Hi jettset99:

I have a major questions to ask you about this kit. I was told that there would be two different versions. One turbine and one DF (which will be coming out at some 'later' date). Now, if I understand you correctly, the turbine kit (which appears to be the one you have) is also the Duct-fan one. Is this true?

tamjets

My Feedback: (2)

This is very well built ARF kit.
I got my 30% done. I hope to test fly her before St. George
I install Ram 500 and pressurized smoke system.

Brg,
Tam
P.S
Paul, stop taking pictures and get that MB339 assemble.

Jackjet

My Feedback: (1)

Jetset99.
you can always stuff a P120 in it-turned down to14lbs of thrust...........


Jackjet

jettset99

My Feedback: (7)

Hi it is both a ducted fan with complete ducting and turbine with tail pipe! from yours trully mr metal tam.. Hi Tam you a pro and all that hired labor you should be at 75% thursday and be charging batteries friday night Im shure ,,,you need to send me a pipe for the mb339 for the ram 500 electrodynamics should call you I will to..allso would like a custom hotspot done up! allso did your kit come with the two turbine formers for the rails and the tail pipe mount?

jettset99

My Feedback: (7)

How is it flew the 16 past the 3 flight limit yesterday flys great put the a4 motor and shortened the pipe much faster and funner to fly on the first flight the gear got stuck so I did a gear up landing broke one gear door but of couse after the epoxied dryed i flew it and keep flying even when we had a 25knt wind new fuel system gets 20 min flight time with reserve!

tamjets

My Feedback: (2)

allso did your kit come with the two turbine formers for the rails and the tail pipe mount? [/B][/QUOTE]
YES.

Paul,
I add 45 degree brace at the second former to add little strenght.
The elevator need to add to former to support the linkage rod.
On the stab. Connect them together with carbon fiber tube or brass tube to add strenght.
If my wife didn't call me to home for dinner. I might get it done haft way.
I only had few hours a day to work on my own project.
Thirty MB 339 pipes need to be done by tuesday. Otherwise I could get this baby to fly this weeken.
Tam

jettset99

My Feedback: (7)

Ok engine ducting went in with little effort but making it so that the engine mount rails can be removed took a lot of time and 9 bucks of bolts the bypass for the fan went in toghther nicely little trimming glue and finnished, also started on the fuel tanks they have cutouts in the front former for the df11s ill use a 10 oz header also and bvm mixture control. totall time 4hours only becase I didnt glue in the engine rails! ill finnish up engine stuff and start mounting servos and tail next, they dont include any tail push rods Ill call and find out why but ill use some carbon rods with titanuium ends...

jettset99

My Feedback: (7)

Ok tam ill be calling you tommarow to give you my address for the pipe ill be bringing mine to St George allso and the Fresno Rally if all goes well and if it doesnt I purchased 2!!!

Vincent

My Feedback: (61)

Hi Guys,

I have a kit on the way and was wondering what gear you all are using?? I am still undecided on the powerplant. I do believe a turned down P120 would be fine but dealing with the idle thrust may be a problem. Yves has told me he was shutting down his P-80 on final for smaller runways so overall the small motor may be the way to go.

Vin...

mr_matt

My Feedback: (10)

Hi Vin,

Not sure what motor your were looking at, but we have seen that the new P-80 idle thust is lower, about .8 to .9 pounds on the stand. It accelrates faster now too.

If you are comparing to the Ram 500, their spec sheet says 1 pound (doesn't sound right??) maybe TonyF knows.

Vincent

My Feedback: (61)

Hi Matt,

Wilcox told me at Tucson the 120 can idle at 31k which is very close to the idle thrust of the Ram 500. The P-80 Yves was using idled at 35k. I may just go with the de-tuned 120 since I have two of them already. The 120 is also very good on gas and would be no problem getting 74oz onboard the Macchi. Yves said the 500 running at a higher throttle actually used the same gas as the detuned P-80, the 120 is even better on gas in that thrust range. DL supplies a bypass that can utilize both types (500 or kj-66) of motors. The choice is mine when I get the kit.

Vin... (on vacay in Fla.)

jettset99

My Feedback: (7)

Hi after talking to tam we have came to the conclusion the Ram 500 is the way to go you have more room for fuel and the plane is not a high speedster, not saying you can put a p-80 in it if you have a choice you couldnt go wrong either way! as for gear spring air with wire strutts will be a perfect match dont mess with gear doors keep it simple and you will get a every day flyer that will keep you intertained and not wrenching!!!

Turbulence

My Feedback: (76)

Paul, you can always use the Top Gun / Top Cat gear like Ken and I set up on our 339's not much heavier, actual strut and looks a lot more scale (not dead on but nice enough)

I use Sping air retracts for 1/2 inch struts, Top Cat struts with BVm Sabre wheels and brakes.

Turbulence