furloughed ual

My Feedback: (31)

The manual says it's 340 - 360 mm aft of the LE at the wing root....this is about the rear edge of the main spar. At an event recently, someoone was telling me this is way too nose heavy and it needs to be moved back. Unfortunately that jet was lost before I had a chance to check and confirm this. Can anyone who has flown the large Skymaster F-86 confirm this and where did u end up with your CG? Putting the finishing touches on one now and am starting to sfuff everything inside for balance.

Vincent

My Feedback: (61)

Hi Ryan,
Check with Wayne Lane, he set up the F-86 that was at speed world.
V..

furloughed ual

My Feedback: (31)

Maybe he'll chime in...I dont have his email or RCU name.

Thanks Vin,
Ryan

Vincent

My Feedback: (61)

I believe its P38J

uncljoe

My Feedback: (8)

Ryan
Check your PM's
Semper Fi
Joe

Gary Jefferson

My Feedback: (167)

Do you know the cause for the F-86 that was lost recently? I have one nearing completion as well and just want to be sure there are not any issues that I need to know about. I have the kit with the updated rudder already.

Thanks, Gary

P38J

My Feedback: (14)

Hello Ryan, I built the Skymaster F-86 that was at Speedworld. On the maiden flight with the CG and throws set per the manual, we were just able to rotate at the end of the runway. The pilot was just able to keep it in the air until the entire available throw was added along with all the up trim we had. After that flight we calculated the CG for ourselves and moved it back to 390mm. This location needed only a few clicks of up trim so it could be moved back slightly but the plane flew great with it located there.

furloughed ual

My Feedback: (31)

Wayne....thanks......disregard the email I just sent you regarding this.
Ryan

thunderbolt-RCU

My Feedback: (14)

WEll the plane Ryan F-86 for me flew twice today. We were about 380 CC for the first flight. Even at that, it took 400 feet of full up before it finally broke ground. A little more weight in the tail and the second flight was better, but still took 400 feet of full up elevator. Actually, the plane sits on the ground with a little negative stance. The runway is 800 feet at it took 600 to take off. I had full up after two hundred feet and it rolled 400 additional with the full up before it took off. The good thing is that it did not jump into the air with all the up elevator. After we get the CG worked out, it will be a fantastic plane.

Why Skymaster has not notified the owners of this fantastic plane that their CG is not even close is beyond me. I am sure most pilots will destroy their plane on the first attempt trying to take off while the run off the runway at over 100 MPH. In the air it handles great.. BTW, I flew it with 11 oz of lead in the tail. It took full down elevator to fly inverted. THe AMT weighs a ton and is in front of the CG along with the turbine battery that is way in the nose. It is a 12 volt, sub C NIMH. The two flight packs are 4200 MHR, NIMH that are in the nose as well. SO if we get some lighter batteries and put them on the CG, we can balance it and pull almost two pounds out of the plane.

Flaps pitches the nose down even further.

Brian O

furloughed ual

My Feedback: (31)

Gary, have u flown yours yet? 390 mm is a good starting point on the CG....I'm guessing we will move this one back to end up somewhere in the 400 - 410 mm range.....390 was still noseheavy in rolling manuvers and inverted flight....

Ryan

MNModels

Hello Ryan and others,

I have a couple of hours on the f86 and i fly with cg at 360mm with p160 and main tanks 1/2 full. CG on hole in root behind main spar. The biggest problem is the size of the main tanks and the fact they they are all before the CG. If you install large turbine and fill the tanks to top it will be XTREMELY nose heavy for take off.

I have suggested to Anton about this. There are 2 options. Move tanks back - not possible , or use less fuel.

I agree that a CG around 390- 400 is good for take off, but as soon as all fuel are out it will become tail heavy too land, especially that down leg down wind turn on finals

But if you are an experience pilot it should not be a problem.

Any way this is my 2c.

Regards

Morne

thunderbolt-RCU

My Feedback: (14)

Morne:
I fly at 5500 feet so I have an AMT olympus with 220 oz of fuel , plus 40 oz of smoke.

Anton really needs to notify his customers about this CG problem. I spoke to him at Florida Jets and he acted like he did not care. He said, just fly it at the factory setting of 340 and then move it back. There is only one other F-86 that was flying in the US and they just about crashed at the end of the runway on their first take off.

The first plane crashed due to a fuel tank coming off of the wing and giving a huge asymmetrical drag problem. That is another problem, there is really no way to secure the external fuel tanks. There is no mounting blocks built into the wing, so they will end up blowing off.
Brian

Joe C

My Feedback: (23)

Brian,
I was flying my F-86 when it crashed, the crash was not from the wing tank that came off, I had no control of jet before that tank blew off, I am still not sure what the cause was for no control. The angle of the jet it was traveling and the speeds the jet picked up, I beleive is the reason the tank to blow off. I agree the tanks need to be secured better than how it comes from factory, I would not fly with tanks on if this is not corrected. I also think my CG was still giving me a little nose heavy at 390mm, it also took most of the runway for me to rotate and I was using a P-200 for power.
Joe C!!!

pilot tw

Hi, Morne and all F-86 owners

yes, we had noted this problem,

The CG will change when the current fuel tank is filled up with 5 liters of fuel. I just redesigned the new fuel tanks for Large F-86 and We will send ASAP new fuel tanks (one 2.5L tank is positioned a bit forward of CG point and rest two 1L tanks set at CG point) to all customers who already received large F-86. If you want to fly before receipt of new fuel tanks, please make sure no more than 3 liters of fuel is filled to the existing tank.

Best regards

Anton

Springbok Flyer

Hi guys,

It seems that SM has simply copied what they had done on the smaller F-86. All the fuel is in front of the CG. The small F-86 also have a very heavy feel on take-off.

Cheers

Jan

furloughed ual

My Feedback: (31)

Anton, can u tell me how much air pressure in the main gear oleo air/oil struts of the big F-86. I cannot find this info on your website.

rusty55125

My Feedback: (6)

Anton, I just purchased the one that was at the Florida jets last month. How do I get the new tanks for mine?

Brian, are you going to bring your F-86 to MN for Tim's warbird fly-in? Could fly them together!


Scott

thunderbolt-RCU

My Feedback: (14)

Scott:
Yes, I plan to bring the F-86 to MN in August. What engine are you going to put in yours?
Brian

rusty55125

My Feedback: (6)

I currently have a p-200 for my f-16, and the support equipment for two jets.
I have been reading that this jet doesn't need a p-200 so was thinking of eventually putting a Rhino in it. What color scheme do you have? Mine is the Skyblazers.
Just spent a crap load of money on jets over the last year and not sure when I can get the new turbine, so may have to swap the P-200 in and out of the two jets. Or sell the smaller SM f-16 I have.

Scott

jetpilot

My Feedback: (48)

Mine flew with Titan. 33lbs thrust. perfect power plant. Anything over this your just adding more weight which is not good. Mine flew at 360 and did have a long roll out, but nothing horrible. make sure to use takeoff flaps and slats! this will help alot.
Scott

pilot tw

Hi, Scott

yes, please e-mail to us for get the new fuel tank cell for Free, we will pay the shipping cost for you,

Best regards

Anton

pilot tw

Hi, I will ask the Likai for reply to you tomorrow, because all L/G was assembled by Likai himself,

Best regards

Anton

vernonms

I just flew my 1/5 86 today with the new Mammoth Jet Central in it. CG was at 350. With takeoff flaps and slats it took 400 feet+/-. You could tell in the turns that you had to use a lot of elevator, especially when dirted up so I keep the speed up some. On landing, still added a little more speed than I thought was normal, but not fast. I ran out of elevator right at touchdown. Pecfect landing. I have 2 lbs of dead batteries (4 of them) in the nose. I will remove some or all to get to 390mm. I also started with a full load of fuel. Mammoth did great. Glad to hear someone has some experience with the 86. Any other tips?

Vernon Montgomery

furloughed ual

My Feedback: (31)

Vernon, does yours sit with 3-4 degrees of negative AOA while on the wheels?

pilot tw

Hi, furloughed ual

I just asked the Likai . the pressure in the main gear oleo air/oil struts of the big F-86 is 50-60 PSI,

Best regards

Anton