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All New KingTech EPO Jets, by HSD

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Old 08-08-2017, 06:03 PM
  #376  
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Originally Posted by oukenfold View Post
I have seen this video and my f16 it's half that speed at full throttle

https://youtu.be/tBcM_32poFQ
Just curious what your altitude is where you are flying in Mexico?
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Old 11-26-2017, 04:25 AM
  #377  
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Hello

I have got one kit of HSD F16 1800 MM foam.

please advise if I can use K85-G2 KINGTECH turbin engine or not? is it too heavy? how to adjust gravity balance?
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Old 11-26-2017, 09:48 AM
  #378  
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Hi
The K85 has the same weight of the K60 therefore no change in CG. However the 85 will burn more fuel than the 60 and you should definitely be cautious and use wise throttle management in order not to over stress the F16 beyond its limits
Regards,
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Old 11-26-2017, 05:25 PM
  #379  
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Originally Posted by luge_racer View Post
Fine. How about: all HSD jets I've owned regardless of the power plant; whether turbine or EDF, stock or upgraded, have had glue adhesion and landing gear issues.
Well we would, but it is kinda hard to take you seriously after you conveniently left out the 100 class turbine part while bashing a company. Sooooooooo
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Old 11-28-2017, 11:33 AM
  #380  
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Originally Posted by PHUC1 View Post
Hello

I have got one kit of HSD F16 1800 MM foam.

please advise if I can use K85-G2 KINGTECH turbin engine or not? is it too heavy? how to adjust gravity balance?
I think top end on the K85 is too powerful for level flight, & not sure how the residual thrust will affect your landing speed although I think that the 16 will slow just fine. I can say that the HSD 16 does very nice high alpha flight, but with my K-60 Ive had some hairy moments transitioning back to forward flight at low altitudes. I will probably upgrade my P-60 in the future, but I already have my timer set to 3:30. I moved it up to 4min, but had no reserves for go arounds.
Jay
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Old 02-07-2018, 11:49 AM
  #381  
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Does anyone know where I can get a 2000cc fuel tank for the F-16?
The tank in the plane is only 1400cc and does not provide a long enough flight time for me.

Thx in advance.
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Old 03-20-2018, 01:07 PM
  #382  
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I installed a 2 liter coke bottle as a new fuel tank (earlier post on this thread) and combined with a k85 and careful throttle management, this is an awesome aircraft to fly. Flight time is easily 7 minutes.


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Old 03-20-2018, 01:20 PM
  #383  
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Nice! Did it require a lot of material removal or modifications to get it to fit?
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Old 03-20-2018, 01:32 PM
  #384  
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Originally Posted by afterburner View Post
Nice! Did it require a lot of material removal or modifications to get it to fit?
No removal, perfect fit. Had to epoxy the strap to the foam on the bottom - the lower neck on the bottle is perfect for the strap to hold the tank firmly in place.

I had to buy a bottle cap vent and fuel line attachment (Chief Aircraft) and quite surprisingly, it all came together with little effort. I made sure that I got the tank as close to the turbine as possible so that there would be minimal CG shift as fuel is burned off. My CG is around 175, far forward of the manual. I always measure CG in the landing configuration, landing gear down, header tank full, main tank empty.

I hit 145 mph on the telemetry GPS (tiny headwind) in a straight line at about 5/8 throttle. I am sure that if I pushed it at full throttle for a longer period, I would have confetti on my hands. A straight up line was just awesome and never ending. Power to weight is above 1.

The K85 (G2) is about the same size as the old K60 and it weighs about the same. I needed no weight in the nose; using a 2200 3S Lipo, 1300 3S Lipo, and a 2100 3S LiFe (turbine), upfront, brought the CG to where I wanted.

Last edited by sharam; 03-20-2018 at 01:37 PM.
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Old 03-20-2018, 02:01 PM
  #385  
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Originally Posted by sharam View Post
No removal, perfect fit. Had to epoxy the strap to the foam on the bottom - the lower neck on the bottle is perfect for the strap to hold the tank firmly in place.

I had to buy a bottle cap vent and fuel line attachment (Chief Aircraft) and quite surprisingly, it all came together with little effort. I made sure that I got the tank as close to the turbine as possible so that there would be minimal CG shift as fuel is burned off. My CG is around 175, far forward of the manual. I always measure CG in the landing configuration, landing gear down, header tank full, main tank empty.

I hit 145 mph on the telemetry GPS (tiny headwind) in a straight line at about 5/8 throttle. I am sure that if I pushed it at full throttle for a longer period, I would have confetti on my hands. A straight up line was just awesome and never ending. Power to weight is above 1.

The K85 (G2) is about the same size as the old K60 and it weighs about the same. I needed no weight in the nose; using a 2200 3S Lipo, 1300 3S Lipo, and a 2100 3S LiFe (turbine), upfront, brought the CG to where I wanted.
Thanks for the info. May have to look into that after I maiden mine.
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Old 03-21-2018, 03:58 AM
  #386  
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Sharam,

Very useful info. Thanks for sharing. Did you notice any particular drawback from the added fuel weight on take off and during first couple of minutes into the flight? are you able to land the F-16 slow?

Thanks
Regards,
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Old 03-21-2018, 11:53 AM
  #387  
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Originally Posted by extra 300 View Post
Sharam,

Very useful info. Thanks for sharing. Did you notice any particular drawback from the added fuel weight on take off and during first couple of minutes into the flight? are you able to land the F-16 slow?

Thanks
Regards,
The takeoff rollout was somewhat longer but once she was airborne, I really could not tell a difference in flight. I am still landing pretty fast; need to practice a bit more. My other problem was visibility. The camo works too well and on a partly cloudy day, she hides quite nicely. I need to get used to it up there.

Another mod I would like to make is to add baffles in the large tank to prevent all that fuel from sloshing around. While I noticed nothing in flight, I think baffles would be a good idea.

Last edited by sharam; 03-21-2018 at 03:11 PM.
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Old 03-21-2018, 06:42 PM
  #388  
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Originally Posted by afterburner View Post
Thanks for the info. May have to look into that after I maiden mine.

Hi Guys,

I read about your modifications and want to throw my .02 in. This jet was designed around a 60N turbine or 12 lbs of thrust. You are now putting almost 60% more thrust in this jet with a K85 at 19lbs. If you want to increase the weight, wing loading and thrust, I strongly suggest changing all the Servo's. control rods, control horns and servo arms to a good heavy duty product. The servo's and hardware that comes with the jet is not the highest quality. The plastic servo arms and control horns are very brittle and breaks very easy under high stress. With the added weight, thrust, speed and flying forces, you will have a failure if you don't make other changes!! Trust me, I am all about having fun, but spend the extra time, effort and some money and change out all the hardware and servo's to give yourself a 1/2 of chance to get more than a few flights before it turns itself into coffee cups.

If you want to save yourself some heart ache, T-One has a 1.8M, Full Composite/Carbon Fiber F-16 coming out in a month or so. There are no control horns or control rods on any of the surfaces to deal with, as they built this like the 1/5 F-16 Big brother and has direct drive servo arm to control surfaces. This plane is designed for the 70-85N turbine but it has been tested with a 100N turbine to the most extreme flying to fully test its strength and durability. It has Electric retracts standard, light kit available as well as a PNP version. We will have pricing and more details out very soon.

Be Safe guys!!

Dirk
Pacific RC Jets
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Old 03-22-2018, 11:40 AM
  #389  
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Well, there is no increase in weight going from the K60 to the K85 G2; the two engines weigh about the same. There is some extra weight due to the extra fuel in the 2 liter coke bottle mod. The K60 seems underpowered. The K70 G2 seems ideal for this jet. The K85 is overpowered but quite fine with careful throttle management, and I would agree that the 100 is way overboard. The F-16 version I have (bought in January), has metal gear servos, metal horns, and beefy metal ball helicopter style links that came standard. If you use a K85 and go full bore the whole time, most likely you will turn the jet into confetti. Even with a K60, the jet will snap its wings if you go hard up elevator after a full dive. As with anything in this hobby, one can push the envelope with careful planning.
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Old 03-22-2018, 04:52 PM
  #390  
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The PowerHD servos, if they are still using the same ones, will be fine.

Last edited by Desertlakesflying; 03-25-2018 at 05:02 PM.
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Old 03-26-2018, 12:26 PM
  #391  
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Hi All,

Been a while since I posted here. Asked this question over at RCGroups and haven't had too much feedback, save for one comment.

Does anyone know of any failures that have occurred, or any quality issues with the thrust pipes that are used in the HSD turbine F-16?

Busy converting a Yellow Aircraft F-16 to turbine power with a K-85 turbine and I'm looking for a pipe. Given that these jets are almost exactly the same size, this pipe should suit my needs. Any opinions appreciated, thanks.

Cheers,

BusdriverSA
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