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Old 08-17-2009, 09:42 PM
  #26  
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Default RE: Skymaster F-16 1/8 build P-80

ORIGINAL: Guillermo Ibanez


ORIGINAL: Pete737

Hey Guillermo,

I just completed 4 flights over the weekend, CG at 150mm. I noticed no tendency of the airplane to dive in turns.. It really flew wonderful!

I just removed my intake pipe today, I am going to try to get another fuel cell where it was. Anyone see any difference with or without the intake pipe?

Pete
Congratulatios Pete.

Any pictures or video?


I am trying to get more inputs for taking my final decision where to let the C.G. at some place between 150 and 175mm

Guillermo
Thanks Guillermo,

No vid or in flight pics. Just one at the end of the day before we packed up.. That's mine with Jeff's Spiderjets 16.

Pete

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Old 08-18-2009, 07:24 AM
  #27  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Pete737

ORIGINAL: Guillermo Ibanez


ORIGINAL: Pete737

Hey Guillermo,

I just completed 4 flights over the weekend, CG at 150mm. I noticed no tendency of the airplane to dive in turns.. It really flew wonderful!

I just removed my intake pipe today, I am going to try to get another fuel cell where it was. Anyone see any difference with or without the intake pipe?

Pete
Congratulatios Pete.

Any pictures or video?


I am trying to get more inputs for taking my final decision where to let the C.G. at some place between 150 and 175mm

Guillermo
Thanks Guillermo,

No vid or in flight pics. Just one at the end of the day before we packed up.. That's mine with Jeff's Spiderjets 16.

Pete

Hey Pete, are you flying with the wingtip missiles installed?
Old 08-18-2009, 07:53 AM
  #28  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Guillermo Ibanez


ORIGINAL: Pete737

ORIGINAL: Guillermo Ibanez


ORIGINAL: Pete737

Hey Guillermo,

I just completed 4 flights over the weekend, CG at 150mm. I noticed no tendency of the airplane to dive in turns.. It really flew wonderful!

I just removed my intake pipe today, I am going to try to get another fuel cell where it was. Anyone see any difference with or without the intake pipe?

Pete
Congratulatios Pete.

Any pictures or video?


I am trying to get more inputs for taking my final decision where to let the C.G. at some place between 150 and 175mm

Guillermo
Thanks Guillermo,

No vid or in flight pics. Just one at the end of the day before we packed up.. That's mine with Jeff's Spiderjets 16.

Pete

Hey Pete, are you flying with the wingtip missiles installed?
Yes I am, It's the only way I have flown it so far.
Old 08-18-2009, 09:52 AM
  #29  
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Default RE: Skymaster F-16 1/8 build P-80

Hey Pete


What are your flight times and how much fuel ?????? are you haveing the same problem with fuel left in the tanks.


Pat Martin
Old 08-18-2009, 10:47 AM
  #30  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

Hey Pete


What are your flight times and how much fuel ?????? are you haveing the same problem with fuel left in the tanks.


Pat Martin
Hi Pat,

My timer is set for 3:30 When it goes off I make a pass and then land. I have the stock tank setup but I just removed my intake pipe and am going to try to fit another tank in the space left. I have not had any problems with uneven draining, Althoug I begin to pull from the header when the tanks are 1/8th full, I think my clunk lines are a bit too short.

Pete
Old 08-18-2009, 12:10 PM
  #31  
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Default RE: Skymaster F-16 1/8 build P-80

Pete,


That will give a lot of room for Fuel, I installed a 24oz. Header tank in my F-16 with the kevlar tanks 34oz. each total ful 92oz not includeing the UAT. Should be OK.

Skymaster F-16 1/8 scale larger fuel tank

Pat
Old 08-18-2009, 01:59 PM
  #32  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

Pete,


That will give a lot of room for Fuel, I installed a 24oz. Header tank in my F-16 with the kevlar tanks 34oz. each total ful 92oz not includeing the UAT. Should be OK.

Skymaster F-16 1/8 scale larger fuel tank

Pat
Hey Pat, wher did you find the 24 Oz Fuel tank? At Dreamworks?

Does it fit?

Guillermo
Old 08-18-2009, 02:18 PM
  #33  
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Default RE: Skymaster F-16 1/8 build P-80

Yes see the post Skymaster f-16 lager tank for the photos of the tank installed
Old 08-18-2009, 08:45 PM
  #34  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

Yes see the post Skymaster f-16 lager tank for the photos of the tank installed
Can't fin it.

Send me the address please....
Old 08-19-2009, 09:53 AM
  #35  
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Default RE: Skymaster F-16 1/8 build P-80

Guillermo,



Skymaster F-16 1/8 scale larger fuel tank
Old 08-19-2009, 09:58 AM
  #36  
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Default RE: Skymaster F-16 1/8 build P-80

Here are the Tanks installed
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Old 08-19-2009, 10:22 AM
  #37  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

Here are the Tanks installed
Nice Pat,

Would you happen to have any larger pictures?

Pete
Old 08-19-2009, 10:46 AM
  #38  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

Guillermo,



Skymaster F-16 1/8 scale larger fuel tank
Sorry Pat, can´t find this post. Please enter to the post and copy the web address and paste it here.

Old 08-19-2009, 10:47 AM
  #39  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Pete737


ORIGINAL: [email protected]

Here are the Tanks installed
Nice Pat,

Would you happen to have any larger pictures?

Pete
Agree with Pat.... Please post larger pictures
Old 08-19-2009, 02:49 PM
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Default RE: Skymaster F-16 1/8 build P-80

OK Here are larger Photos I understand.

This is a 2"X3.5"X 6.25" FROM DREAMWAORKS I did have to cut a little opening so to fit but it is not a big deal to me.

I will be happy if it work having more fuel is good.

Pat Martin Wasilla Alaska
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Old 08-19-2009, 03:51 PM
  #41  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: [email protected]

OK Here are larger Photos I understand.

This is a 2''X3.5''X 6.25'' FROM DREAMWAORKS I did have to cut a little opening so to fit but it is not a big deal to me.

I will be happy if it work having more fuel is good.

Pat Martin Wasilla Alaska
Thanks Pat

Very nice installation

I will test mine with the 16 Oz extra fuel and according to the fuel remaining after 5 minutes (of course test on the ground), I will consider getting this 24 Oz. fuel tank from Dreamworks.

Guillermo
Old 12-31-2009, 10:32 PM
  #42  
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Default RE: Skymaster F-16 1/8 build P-80

Looking to buy a Skymaster 1:8 F-16 and run a P-80.
Where did you end up settling on the CG?
How long are the flight times with the 24oz header tank vs 16oz?
Any issues running the stock exhaust pipe or having fuselage overheating problems with the P-80 stuffed in there?


Thanks,
Mike
Old 01-01-2010, 12:38 AM
  #43  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Molnar142

Looking to buy a Skymaster 1:8 F-16 and run a P-80.
Where did you end up settling on the CG?
How long are the flight times with the 24oz header tank vs 16oz?
Any issues running the stock exhaust pipe or having fuselage overheating problems with the P-80 stuffed in there?


Thanks,
Mike
Hey Mike:

<span class="Apple-style-span" style="font-family: Verdana, Arial; font-size: 13px; -webkit-border-horizontal-spacing: 1px; -webkit-border-vertical-spacing: 1px; ">My C.G.? I will start with 170mm with gear down, UAT full and front tank full. Hope to land with not less than half front tank which will move the CG at landing, to 175 mm.....

I am relying my C.G. to Craigs and all his partners in Australia experience, under the fact that I experienced some serious nose tucking down in my lostF-16. Even, the day of crash, this tendency contributed definitely to the accident.

My conclusions after all the different C.G positioins I have read are:

1- If you have a tail mounted turbine (P-60, Super Bee, Wren 44, and similars) and your F-16 is around 17-18 lbs., let the C.G. were factory reccomend (135-145mm) I would set it in 145mm
2- If you have a center mounted turbine (P-70, Falcon or similar) and your F-16 is around 22 pounds, move C.G to 155-160mm
3-If as mine, you have a center mounted turbine (P-80 or similar, that is a heavier turbine) and your F-16 is around 22-24 pounds, move your C.G to 165-175 mm.

Although I have not tested all those situations because I have only one F-16 and my set up is the same as No.3, with final weight around 25 pounds, I can not assure nothing. Is pure speculation based upon all I have read.

Keep in touch
</span><br type="_moz" />
Old 01-01-2010, 01:00 AM
  #44  
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Default RE: Skymaster F-16 1/8 build P-80

mine was very nose heavy with the cg set at 155. it flew great, just nose heavy. I have SuperBee in tail
Old 01-01-2010, 01:01 AM
  #45  
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Default RE: Skymaster F-16 1/8 build P-80

Also, if anyone needs a brand new pipe, please PM me. Will it hurt to fly this with no gear doors? turbulent airflow through the fuse to engine??
Old 01-01-2010, 01:18 AM
  #46  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: lear31A

mine was very nose heavy with the cg set at 155. it flew great, just nose heavy. I have SuperBee in tail
Move C.G.back to 160 mm and then to 165 mm and fly it. Watch the elevators trim positioin during level flight


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Old 01-01-2010, 11:45 AM
  #47  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Guillermo Ibanez


ORIGINAL: Molnar142

Looking to buy a Skymaster 1:8 F-16 and run a P-80.
Where did you end up settling on the CG?
How long are the flight times with the 24oz header tank vs 16oz?
Any issues running the stock exhaust pipe or having fuselage overheating problems with the P-80 stuffed in there?


Thanks,
Mike
Hey Mike:

<span class=''Apple-style-span'' style=''font-family: Verdana, Arial; font-size: 13px; -webkit-border-horizontal-spacing: 1px; -webkit-border-vertical-spacing: 1px; ''>My C.G.? I will start with 170mm with gear down, UAT full and front tank full. Hope to land with not less than half front tank which will move the CG at landing, to 175 mm.....[img][/img]

I am relying my C.G. to Craigs and all his partners in Australia experience, under the fact that I experienced some serious nose tucking down in my lost F-16. Even, the day of crash, this tendency contributed definitely to the accident.

My conclusions after all the different C.G positioins I have read are:

1- If you have a tail mounted turbine (P-60, Super Bee, Wren 44, and similars) and your F-16 is around 17-18 lbs., let the C.G. were factory reccomend (135-145mm) I would set it in 145mm
2- If you have a center mounted turbine (P-70, Falcon or similar) and your F-16 is around 22 pounds, move C.G to 155-160mm
3-If as mine, you have a center mounted turbine (P-80 or similar, that is a heavier turbine) and your F-16 is around 22-24 pounds, move your C.G to 165-175 mm.

Although I have not tested all those situations because I have only one F-16 and my set up is the same as No.3, with final weight around 25 pounds, I can not assure nothing. Is pure speculation based upon all I have read.

Keep in touch
</span><br type=''_moz'' />
Thanks Guillermo. Being concerned of a too far aft CG I'll probably start with 160mm and work my way back if needed. Unless you think it's too risky to start there. It is somewhat strange that I read some people think that a CG location of 140mm is "perfect" while others write 140mm is way too nose heavy and the plane flies much better at a CG location of 170mm.
From reading the various build threads and Skymaster's instructions, the build appears to be fairly straight forward. Any other thoughts/ideas you could share on this build from your experience?
I'm interested in running a Flaperon and Elevon setup. Meaning for roll control, both the elevators and ailerons move. Hitting the flap switch, and the ailerons (flaperons) move in coordination as flaps. Do you see any issue with this? Has anyone run this type of setup?

The Skymaster instructions say...
"The F16 may be set up for 2 versions:
1. Elevon with only Flaps on wing or Elevon only.
2. Elevator and ailerons. NO FLAPERONS"

Which seems to suggest not to run it they way I would like.

Servos I plan to use:
Flaperon - DS8411
Elevons - HS7955TG
Rudder - DS368
Steering - HS5645MG ? Not sure.

Any suggestions are welcome.

Thanks,
Mike
Old 01-01-2010, 12:13 PM
  #48  
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Molnar142


ORIGINAL: Guillermo Ibanez


ORIGINAL: Molnar142

Looking to buy a Skymaster 1:8 F-16 and run a P-80.
Where did you end up settling on the CG?
How long are the flight times with the 24oz header tank vs 16oz?
Any issues running the stock exhaust pipe or having fuselage overheating problems with the P-80 stuffed in there?


Thanks,
Mike
Hey Mike:

<span style="">My C.G.? I will start with 170mm with gear down, UAT full and front tank full. Hope to land with not less than half front tank which will move the CG at landing, to 175 mm.....[img][/img]

I am relying my C.G. to Craigs and all his partners in Australia experience, under the fact that I experienced some serious nose tucking down in my lostF-16. Even, the day of crash, this tendency contributed definitely to the accident.

My conclusions after all the different C.G positioins I have read are:

1- If you have a tail mounted turbine (P-60, Super Bee, Wren 44, and similars) and your F-16 is around 17-18 lbs., let the C.G. were factory reccomend (135-145mm) I would set it in 145mm
2- If you have a center mounted turbine (P-70, Falcon or similar) and your F-16 is around 22 pounds, move C.G to 155-160mm
3-If as mine, you have a center mounted turbine (P-80 or similar, that is a heavier turbine) and your F-16 is around 22-24 pounds, move your C.G to 165-175 mm.

Although I have not tested all those situations because I have only one F-16 and my set up is the same as No.3, with final weight around 25 pounds, I can not assure nothing. Is pure speculation based upon all I have read.

Keep in touch
</span><br type="" />
Thanks Guillermo. Being concerned of a too far aft CG I'll probably start with 160mm and work my way back if needed. Unless you think it's too risky to start there. It is somewhat strange that I read some people think that a CG location of 140mm is "perfect" while others write 140mm is way too nose heavy and the plane flies much better at a CG location of 170mm.
From reading the various build threads and Skymaster's instructions, the build appears to be fairly straight forward. Any other thoughts/ideas you could share on this build from your experience?
I'm interested in running a Flaperon and Elevon setup. Meaning for roll control, both the elevators and ailerons move. Hitting the flap switch, and the ailerons (flaperons) move in coordination as flaps. Do you see any issue with this? Has anyone run this type of setup?

The Skymaster instructions say...
"The F16 may be set up for 2 versions:
1. Elevon with only Flaps on wing or Elevon only.
2. Elevator and ailerons. NO FLAPERONS"

Which seems to suggest not to run it they way I would like.

Servos I plan to use:
Flaperon - DS8411
Elevons - HS7955TG
Rudder - DS368
Steering - HS5645MG ? Not sure.

Any suggestions are welcome.

Thanks,
Mike
Hi MIke:

Is OK to start at 160mm and try to adjust the C.G. as needed.

Regarding your set up, mine is:

Condition 1: In flight:: Ailerons, elevators, rudder in normal fashion.
Condition 2: Take Off/Landing: Ailerons down as flapperons 20&deg;, elevators move as ailerons too.

I have flown this jet with flapperons in combination with elevons (This combination is called by Futaba as Ailvators) and at slow speeds, ailvators works fine. But I dont know if it was because my ailerons thorws were measured in the wrong position (manual calls for 25mm in the ailerons tip, and I measured it in the ailerons root. As a result, ailerons tip didn't get 25mm of throw and because of this I think that with flaps down, ailerons were sluggish. Then I used ailvators, to help ailerons in slow speed turning).

Now, I have the right throw but I have not tested this set up. I think is going to be very sensitive,

About your servos, I use Futaba, so I have no experience with JR.

BRG
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Old 01-01-2010, 12:41 PM
  #49  
Molnar142
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Default RE: Skymaster F-16 1/8 build P-80

Guillermo,

Thanks.
So with your new aileron throw setup, will your "Condition 1: In Flight" setup be the aileron and coordinated elevon setup, "Ailvator" or will you only use this Aileron/Elevator coordination for roll control for your "Condition 2: Take Off/Landing" program.

Thanks,
Mike
Old 01-01-2010, 01:33 PM
  #50  
Guillermo Ibanez
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Default RE: Skymaster F-16 1/8 build P-80


ORIGINAL: Molnar142

Guillermo,

Thanks.
So with your new aileron throw setup, will your "Condition 1: In Flight" setup be the aileron and coordinated elevon setup, "Ailvator" or will you only use this Aileron/Elevator coordination for roll control for your "Condition 2: Take Off/Landing" program.

Thanks,
Mike
I use it just for Condition 2 for Take Off and Landing.

Although you can program the Ailvators in Condition 1 for maneuvering if you want too.
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