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HSD MB339 review anyone???

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Old 10-10-2018, 08:57 AM
  #26  
DUCMOZ
 
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Thank you. we recently lost our paved flying site so I am trying to find something quick build to fly off the rough grass.
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Old 10-10-2018, 09:07 AM
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it' a solid great flier for sure
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Old 10-15-2018, 10:02 AM
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ms200a
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Originally Posted by arizcowboy View Post
yes the blue one in the pictures since July . the white red is brand new and that's the one I'll do a build thread
Hi arizcowboy, where is the cg? How about flight control travel? Expo? With flaps did it climb or dive?
thanks in advance for any info
Mike in Vegas
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Old 10-15-2018, 10:59 AM
  #29  
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cg 135 mm front wing root , aileron factory set up 15mm to 20mm . elevator 20mm - 25mm . flap take off 15 deg land g 45 degree ( I'm using 25 mm take off and landing 55 mm rudder 15mm ( me 30mm) will measure down elevator mix with flaps about 2 mm... expo your own your own I use a jeti radio and I run about 15 expo your prefrence on that subject . I fly very sensitive and that jet is set up light from what I usually do .

Last edited by arizcowboy; 10-15-2018 at 01:14 PM.
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Old 10-15-2018, 12:37 PM
  #30  
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Thank you for the information
Best regards
Mike
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Old 10-16-2018, 12:27 PM
  #31  
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So HSD sells this model... boomerang jets sell it and on adrenaline rc/ Banana hobby sell it. So who manufactures this? I’m guessing HSD
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Old 10-16-2018, 12:34 PM
  #32  
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hsd does not sell it . banana hobby is a distribuor , we named the jet for the factory and import it , with lots of up grades . New shipment will be in a few days . terry
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Old 10-16-2018, 12:47 PM
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Hi, one question, as we recently lost our Turbine field, has anyone tried to convert this plane to EDF. It seems as BVM 12S 120mm fan would have enough trust for it to fly good.

Thanks

Behzad
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Old 10-16-2018, 01:00 PM
  #34  
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not that I have heard , you can be the first
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Old 10-16-2018, 01:12 PM
  #35  
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Thank you for the reply. if you have access to it, would it be possible to let me know the distance between the turbine mounting rails so I can see if the Fan unit would fit.

Thanks again.
Behzad
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Old 10-16-2018, 01:20 PM
  #36  
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turbine rails are about 120mm and fuselage to fuselage is about 178 mm
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Old 10-16-2018, 01:35 PM
  #37  
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thank you. I will measure the fan tonight to see if it will fit..
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Old 10-16-2018, 01:48 PM
  #38  
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Originally Posted by arizcowboy View Post
hsd does not sell it . banana hobby is a distribuor , we named the jet for the factory and import it , with lots of up grades . New shipment will be in a few days . terry
I assume all this secrecy is being done to protect Banana Hobby’s distribution rights in the US but it does make it somewhat confusing for those of us in other parts of the world who might want to try and buy one.

I’m not sure if HSD has stopped selling this model but they were certainly selling it at one point. Boomerang Jets claim that their MB339 is different but it has uncanny similarities.

And I don’t really understand the comment ‘we named the jet’. This was on the HSD website before it was on the Banana Hobby site.

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Old 10-16-2018, 01:55 PM
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banana hobby picked up the sales . other site same jet , same manufacture , except banana hobby has more upgrades done to it . does that help . Terry ps banana hobby can ship worldwide also , checkout their special shipping on this jet

Last edited by arizcowboy; 10-16-2018 at 06:10 PM. Reason: mistake
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Old 10-16-2018, 09:30 PM
  #40  
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Besides the led lights and smoke tank, would like to know more about the "lots of upgrades" , are there any changes in structure, airfoil, landing gear, material … any weak points that need to be strengthen? I bought one of the first jets from HSD and would very much like to know the difference/upgrades to fix the important ones (if any).
Thanks
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Old 10-17-2018, 03:05 AM
  #41  
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up graded servos , thicker canopy glass , no longer using the metal type servo lead connectors .structure hasn' been changed or landing gear . is there any concerns that you re worried about .
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Old 10-17-2018, 03:07 AM
  #42  
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[QUOTE=arizcowboy;12471193]up graded servos , thicker canopy glass , no longer using the metal type servo lead connectors .structure hasn' been changed or landing gear . is there any concerns that you re worried about . Almost forgot a new gear controller and seperate adjustable brake controller . Have you flown yours yet.

Last edited by arizcowboy; 10-17-2018 at 03:11 AM.
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Old 10-17-2018, 03:50 AM
  #43  
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[QUOTE=arizcowboy;12471195]
Originally Posted by arizcowboy View Post
up graded servos , thicker canopy glass , no longer using the metal type servo lead connectors .structure hasn' been changed or landing gear . is there any concerns that you re worried about . Almost forgot a new gear controller and seperate adjustable brake controller . Have you flown yours yet.
thanks for the details... do you foresee any problems with the original servos/ gear an brake controllers? still haven't flown mine.... we have just lost our flying field last week end!!
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Old 10-17-2018, 03:59 AM
  #44  
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Actually i dont see any issues with what you have . only thing I would do , is your servo wire connectors that plug in between front fuselage half and fuselage , I would secure those metal connecrs with either bolts going thru, or some type of Silcone to make sure not coming un plugged same with plugging in wings .
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Old 10-17-2018, 04:59 AM
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Thought of converting them when I saw them. Too bulky.... will change to HSD type of connectors.
One other thing I intend to change is the flimsy wood dowels of canopy and hatch... these will be changed to CF rods, also thinking of adding hooks to canopy to prevent same from ejecting in flight...
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Old 10-17-2018, 06:12 AM
  #46  
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  • all the front dowels due is hold down the front of canopy . . i have higher end jets that use less than that .So far not an issue

Last edited by arizcowboy; 10-17-2018 at 06:15 AM.
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Old 10-17-2018, 06:36 AM
  #47  
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forgot to ad I'm using about 5 - 8 mm of crow
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Old 10-25-2018, 12:03 AM
  #48  
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actually this jet is not manufactured by HSD, but a new factory from the province of Guangxi.
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Old 10-25-2018, 02:34 AM
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Originally Posted by VS.T View Post
actually this jet is not manufactured by HSD, but a new factory from the province of Guangxi.
Correct. for good order sake, HSD never said that they are manufacturing this kit. they said that they will be distributing it.
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Old 10-25-2018, 04:02 PM
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Hi All, I have the Boomerang MB-339, 25 flights todate, arizcowboy was very helpful in the cg and other info, this is my setup;

​​​​Aileron High 20mm, Mid 15mm, low 10mm. expo 10% on all, I like mid position the best. Elevator high 23mm, mid 19mm, low16mm,15% expo all. Again I like mid position the best. I also slowed elevator servo down a touch to keep from inducing pitch oscillation and getting into the huck a buck when landing. Flap Mid 13mm, Full 40mm, mixed in crow Ailerons up10mm, CROW ONLY with FULL flap! Flaps slowed down to soften any pitch change and look more realistic on ground. Flap elevator mix, none on mid, 2.6mm down elevator on full Flap.
CG. location Larry Roper Boomerang jets said; The Leading edge of the wing tip and arizcowboy (rcuniverse) said his HSD is at 135mm from where wing meets fuse. Mine is now at 131mm from leading edge where wing meets fuse. With a swept wing this can be a bit tricky to measure where the balancer makes contact to the wing. Because the trailing edge has no sweep, if you measure from trailing edge forward it works out to 257mm, with cg set at that point, it still needs some down elevator in inverted but not much. FWIW my flying style is lazy, I just like to turn, roll, loop, split s, Immelmann, that stuff, I fly with an old p-70 for power at a little better then 1/2 throttle and at full across the deck to build up energy for vertical stuff. I can fly for 7min but keep it around 5 for fuel cushion incase someone needs to land or has trouble. The wing tanks will also help slow it down and you'll need to stay in the power base to final which for me is good because the P-70 spool up time is measured with a calendar. The crow acts like a bit more washout. I rate all my planes this way "would I buy it again" Yes absolutely, already saving for a 2nd one to dress gray camo. Fly's like a trainer because it is one, Qualifies as a warbird because it is one. As the Italians say Ciao





Last edited by ms200a; 10-25-2018 at 04:07 PM.
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