aquaskiman

My Feedback: (46)

I have one (SM F-86 1/6.5) that is about two years old now. Yes the turbine rails are not right; I had to raise the front about 3/8 inch. I did this with wedges. I set the balance and troughs as per manual and if fly’s fine at these settings. I also had a new pipe built so I could move the turbine as far forward as possible, so I would not have to add a lot of nose weight.

furycham

What turbine are U using? I am planning to use a Rabbit 100 so I still don´t know If i will need too much nose weight. If thats the case where did you get your new pipe?

smchale

My Feedback: (67)

Guys, can anyone post a picture of the rear end of the saddle tanks? Would like to see where they are sitting in the fuselage, how much clearance is between them and the fuselage root rib and also what is the distance between the two saddle tanks in the middle of the fuse? I want to locate my turbine but I don't want to interfere with the tanks. My tanks haven't arrived yet...should ship next week (unless someone has an extra set of the 3 tanks?). I want to locate my turbine so I can get my pipe made and hopefully it will arrive at the same time as the tanks.

Thanks!!

3DHELINUT

My Feedback: (3)

I have my tanks against the bulkhead, there is about 1/4 inch clearance between the tanks at best.

Clearance between the turbine and the tanks is shall i say minimal.... i have 1/2 a bypass between the turbine and the tanks but i feel that this is not needed as it is only the front 2 inches of the turbine is covering the main tanks. You can use a heat shield that you get from a speed shop to deflect the heat away from the tanks.

The F-86 needs a lot of nose weight no matter what you do, my plane balanced with the cockpit and a 1/6 figure and 8 oz. of lead. the plane flies great with a Jet Central eagle turned down to 24 lbs. I have close to 100 flights on her and she will slow down nicely for landings.

With the power i have she is a 150 to 160mph easily.

Sean bring your bird to Hamburg one weekend and fly with us, PM me and i will send you my cell number if you have additional questions.




Alan

smchale

My Feedback: (67)

Alan,

These are the dimensions I was inquiring about. Reason I'm asking is that my model currently has BVM EZ air in the root for the gear/brakes, and some D-9 connectors for the flap/aileron servo. Just wonder if they will interfere with the tanks and should be reworked. Total pain as they are already in and have proved to work in flight, etc.

I'm lookinng at having the front turbine mount right at that bulkhead and so the turbine may fit up in between the tanks a little. Good suggestion on a little heat sheild in there.

chrigui

here my R.I.P. F-86

3DHELINUT

My Feedback: (3)

I will get you photos and measurements later today, it will be easy as i have the turbine out.






Alan

smchale

My Feedback: (67)

Here are the connections on the outside of the fuse wing root. The servo connection should be fine as it's behind the bulkhead. the air may be a problem.
I'll see if I took a picture of the inside....

smchale

My Feedback: (67)

Here's a picture of the inside. I suspect this will be an issue that will need to be resolved to fit the tanks as far back as possible.....

Spuetz

Hello Sean,

yes - sorry - that will be a problem. The tanks sit right down in that corner. I have just some room between it to run some pressure lines. That's it. Width between the tanks is: 107 mm (4 1/4 Inch)

Cheers, Martin

smchale

My Feedback: (67)

Martin,
If needed could I slide those saddle tanks fwd 2" ok?
That would allow me to leave the lines and push the turbine fed a little more.
The turbine is 4.5" in dia.

Spuetz

Sean,

I believe you could. However my feeling is that you're trying to avoid some extra work at the expense of optimal configuration. We heard a lot about nose heavyness and so on. Now if you move those tanks further forward of the c/g - wouldn't be such a good idea. If I were you I'd rather change the air system!

Mind you I am going to dismantle mine again quite a bit as well. Why? because I am not satisfied with the landing gear operation. Sometimes it does and sometimes it does not work. I believe there is a leakage in one of the pistons which tells me a story about the piston quality as such. I think I'll replace the landing gear alltogether. Either Behotec or even fully electric. I hate air pressure systems anyhow. So unreliable! some electric actuators in lieu of thecylinders anda couple of neat, small,strong servoes on the doors - and bang - a totally reliable system! And what with all the nose weight needed: no problem to install larger batteries. this way I will be able to cycle the landing gear 100 times during one flight if I so chose....

the Bonanza that I have flown has an electric system and it has never failed me (I obviously live to tell the story... ;-) )

Will be a while before she flies, I guess...

Cheers, Martin

3DHELINUT

My Feedback: (3)

There is a 3/4 inch clearance between the lower edge of the tank and the side of the fuse, the pics show all other measurements.



Alan

mario tavarez14

My Feedback: (37)

this is a fej f-86 with the jetcat p-180 rx that i almost finish for my friend sal apice she took me 3 months to finish this baby enjoy this instalation

smchale

My Feedback: (67)

Thanks Alan, that's helpful. Looks like there is some room fwd of that smaller hopper tank to slide things fwd if needed? I think at the weight of my old turbine it will be more beneficial to move the tanks ahead a little vs moving the turbine backwards. Do you find that small tank very effective? vs. just running a the saddle tanks right into the CAT/UAT?

smchale

My Feedback: (67)

Nice install Mario. Envious of all the space you had in there to work with....

3DHELINUT

My Feedback: (3)

Sean a larger third tank will be beneficial depending on your power plant

with the three tanks i am getting 6 min flights with my Super eagle set to 24 lbs. The F-86 is now in for an overhaule... new paint and some minor repairs.


Alan

smchale

My Feedback: (67)

Alan, my Power is less than you, more around 20lbs with a consumption of 280 ml/min max.

3DHELINUT

My Feedback: (3)

i believe that the main tanks are 40oz each.

smchale

My Feedback: (67)

They may be a little more...Skymaster said the total was about 3.5L.

aquaskiman

My Feedback: (46)

I am now using a JC 120 I had a 22# P80 and on a hot day at 5400ft with a DA of 9500ft it would take all of the runway to get off.
The pipe I had built was a UKR-JET pipe. It is a work of art, welded seam.

smchale

My Feedback: (67)

Just about finished my conversion/install and will post pics shortly. I need to mount the pipe and select and locate the ECU battery for balance. Did you guys balance the model with or without the wing tanks? Did you find any difference?

smchale

My Feedback: (67)

Wrapped up my install today. It didn't need any extra non-essential weight to balance the airframe with the tanks empty and CAT full. I was able to adjust the ECU lipo location on top of the inlet duct to get the correct balance. Balanced dry except CAT full, it weighs exactly 22 lbs. With the wing tanks on it's 22 lbs 11 oz.

Here are a few pics. Ready to remaiden in the next couple weeks.

1ricardo

My Feedback: (25)

I did not have that luck, my airplane have a P100 on it, a 2300mah A123 rx battery on the nose, a 9.9v A123 for the ECU on the nose as well and even like this i had to put 570 grams ( 20,1 oz ) of lead on the nose!
Needless to say how mad I´m with this scenario...

smchale

My Feedback: (67)

The P100 should be lighter than my J66, which is just over 3lbs.
The answer perhaps is to move your turbine fwd and get a longer pipe, or maybe have an extension rolled for the back?
My pipe is 30.5" long and was made by Gary of jet tech fuel tank fame.