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Harlock RC Viper 140

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Old 10-28-2018, 06:04 PM
  #26  
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Originally Posted by Bob_B
Neither gear is really bolt in but the mounts have to be backed up and extended slightly inward for the Electrons.
Mine has the HSD Gear. They work fine but def. not Electron Quality, mine is a 12S EDF setup.
Can you let me know what batteries you are using and your flight time with them? I'm building a 12S now and am trying to decide what batteries to use in it.
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Old 10-28-2018, 11:22 PM
  #27  
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I have been flying a set of gensace 5000’s and a set of the latest Turnigy Graphene 75C. 4000’s. I use a capacity sensor (Jeti) to decide when its time to land. I honestly can not tell you how long my flights are.

I want to mention the Turnigy Packs are the best packs I have used to date!
Last edited by Bob_B; 10-29-2018 at 05:30 AM.
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Old 10-29-2018, 06:24 AM
  #28  
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F1 Rocket, which servo arms did you used for the elevator’s/aileron’s?
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Old 10-29-2018, 06:30 AM
  #29  
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I am using the stock nylon arms.
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Old 10-29-2018, 06:41 AM
  #30  
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Originally Posted by Bob_B
I am using the stock nylon arms.
on the HV93?
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Old 10-29-2018, 07:45 AM
  #31  
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Originally Posted by Dansy
F1 Rocket, which servo arms did you used for the elevator’s/aileron’s?
https://www.aeropanda.com/collection...metal-horn-set

For use in MKS HV93 servos.

Danny

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Old 10-29-2018, 07:50 AM
  #32  
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Originally Posted by F1 Rocket


https://www.aeropanda.com/collection...metal-horn-set

For use in MKS HV93 servos.

Danny

Thanks will orders those...
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Old 12-04-2018, 07:37 AM
  #33  
F16Jeff
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Hi All,

I just ordered this jet yesterday from Harlock RC and my tracking shows it will be here Thursday. Wow! That is fast, I waited months for my T1 and Skymaster-Xterme F4e. Anyway I plan to put a Kingtech 70 in this plane when they become available again. Flying off a paved runway so went with the stock landing gear with brakes. My radio gear is Jeti and will use a Jeti 10ch Assist receiver.

Regarding servo requirements, the instructions picture shows Savox SH0257mg servos. I have several of them as well as Savox SH0255mg servos. I run LiFe 6.6v batteries for my flight equipment. Will these servos work will with this plane?

Planned applications:
Flaps, Elevators, Rudder - SH0255mg - Speed @6v - 0.13 sec/60 deg / Torque @6v - 3.9kg/54.2oz-in
Steering and Ailerons - SH0257mg - Speed @6v - 0.09 sec/60 deg / Torque @6v - 2.2kg/30.6oz-in

Thank you,
Jeff
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Old 12-04-2018, 07:44 AM
  #34  
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Unless you plan to use a number of y harnesses I don’t think the 10 assist will give you enough channels.

The MKS 93 is a drop in fit anything larger will require modifying the openings
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Old 12-04-2018, 07:45 AM
  #35  
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The model does go together quickly and is a superb flyer mine is EDF powered with a 12 S set up just a shade over 11 pounds with the batteries installed
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Old 12-04-2018, 08:20 AM
  #36  
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Originally Posted by Bob_B
Unless you plan to use a number of y harnesses I don’t think the 10 assist will give you enough channels.

The MKS 93 is a drop in fit anything larger will require modifying the openings
Hi Bob,

I will also have a R3 attached to the Rex 10 Assist which I can expand channels with the R3. I do not use y harnesses whenever possible. I saw that MKS 93 servos have good specs and drop in easily. My thought is to work with what I have before buying new ones if they have enough torque. Just seems some of these setups being done have a ton of torque for small flying surfaces.

Thank you,
Jeff
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Old 12-04-2018, 01:51 PM
  #37  
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By putting servo’s in the R3 you will power the R3 and servo’s from a single port...I’m using a R12 Assist in mine.
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Old 12-04-2018, 02:22 PM
  #38  
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Originally Posted by Dansy
By putting servo’s in the R3 you will power the R3 and servo’s from a single port...I’m using a R12 Assist in mine.
Dansy,
I will only use the R3 for retracts and brakes. They are powered separately and only need the signal wire to the R3. I did this with my Freewing F16 and works great.

Jeff
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Old 12-04-2018, 11:36 PM
  #39  
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Originally Posted by F16Jeff
Hi All,

I just ordered this jet yesterday from Harlock RC and my tracking shows it will be here Thursday. Wow! That is fast, I waited months for my T1 and Skymaster-Xterme F4e. Anyway I plan to put a Kingtech 70 in this plane when they become available again. Flying off a paved runway so went with the stock landing gear with brakes. My radio gear is Jeti and will use a Jeti 10ch Assist receiver.

Regarding servo requirements, the instructions picture shows Savox SH0257mg servos. I have several of them as well as Savox SH0255mg servos. I run LiFe 6.6v batteries for my flight equipment. Will these servos work will with this plane?

Planned applications:
Flaps, Elevators, Rudder - SH0255mg - Speed @6v - 0.13 sec/60 deg / Torque @6v - 3.9kg/54.2oz-in
Steering and Ailerons - SH0257mg - Speed @6v - 0.09 sec/60 deg / Torque @6v - 2.2kg/30.6oz-in

Thank you,
Jeff
Don’t wait for the K70.. mine has M70 and it’s a rocket... go for the M70 (Jets Munt M70XBL)

David
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Old 12-05-2018, 12:35 PM
  #40  
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Originally Posted by LA jetguy


Don’t wait for the K70.. mine has M70 and it’s a rocket... go for the M70 (Jets Munt M70XBL)

David
David,

Thank you for the advice on the M70. I have been happy with the Kingtech line and especially the service and support from Dirk and Barry at Pacific RC Jets. I need to get back out to the basin and see yours.

Jeff
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Old 12-12-2018, 09:26 AM
  #41  
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Has anyone added another tank to get longer flight times. I was getting 6 minutes with a 50 oz tank in my Avanti that my 45 came out of but at 30 oz I'm afraid 4 minutes might even be pushing it with a k45.
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Old 12-12-2018, 09:29 AM
  #42  
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With the turbine conversion kit tank I'm getting close to 7m with a 45

I don't fly it wide open for 7 minutes though
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Old 12-13-2018, 05:26 AM
  #43  
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Could a Merlin VT-80 be adequate for this plane, or is too big?

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Old 12-13-2018, 05:28 AM
  #44  
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Anything with more power or weight than a K45 is just silly. A 70 is crazy
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Old 12-13-2018, 06:00 AM
  #45  
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From my experience I'm sure this plane would do superb on the K30 too. Shave a lot of weight of and still get good performance
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Old 12-13-2018, 06:53 AM
  #46  
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Originally Posted by Henke Torphammar
From my experience I'm sure this plane would do superb on the K30 too. Shave a lot of weight of and still get good performance
Another model I would consider converting to the K30! Henke do you have a suggested setup.
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Old 12-13-2018, 08:18 AM
  #47  
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This would probably be a good candidate for it though I think the 45 is a great match
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Old 12-13-2018, 08:34 AM
  #48  
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Originally Posted by F1 Rocket


The one I built is 10.25 lbs dry and needed approx 4 oz nose weight with the CG at 115mm from the leading edge of the wing where it joins the fus.

Danny
Hello, how did you manage to keep that CG? With empty and full tank please. I can't place my tank aft in order to reach the steady desired CG.

Rgds
JC
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Old 12-13-2018, 09:42 AM
  #49  
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C&G is done with fuel tank empty, UAT fuel and gear down..
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Old 12-13-2018, 09:58 AM
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Originally Posted by Dansy
C&G is done with fuel tank empty, UAT fuel and gear down..
Ok, but once main tank is filled CG changes forward, and as you fly tank empties down and CG moves then aft. Normal ?
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