The Making of Xtreme ARF F100 D Super Sabre
#426
You guys have to consider also the exhaust diameter if you have 90mm exhaust for a engine of 250N the exhaust should be at least 110mm ID, Xtreme aARF plane comes already with 110mm to 115mm ID, so please take a look on yours before you change engine.
#427
Has become to our attention an issue on the F100 elevator authority, for jets that is flying heavy (more than 52 Lb in weight), the nose is very slow to recover from a hard maneuver, we are working on this issue and have a solution already we are going to increase 1/2" on the elevator mechanism arm, this will transfer big momentum to the elevator correcting the known issue. So for the pilots that are flying less than 52 Lb there is no problem at all, for those that are on the heavy side we recommend do not fly with all armament and do not make any hard maneuver, the jet will fly good without any problem.
Lewis already made an adaptation on his F100 as shown in the picture below and he report great improvement.
We will send to our customer soon we have received the new elevator mechanism, but please be patient, this takes a while, we depend the 3rd part to CNC new mechanism and we have to follow their production schedule
Obs. The new orders will be update before goes to the customers
Lewis already made an adaptation on his F100 as shown in the picture below and he report great improvement.
We will send to our customer soon we have received the new elevator mechanism, but please be patient, this takes a while, we depend the 3rd part to CNC new mechanism and we have to follow their production schedule
Obs. The new orders will be update before goes to the customers
#429
I was wondering after looking at these pics, what kind of material are the bulkheads made off? It doesnt look like ply laminated with carbon it looks like some other material, some type honeycomb core material laminated in carbon. I know there are a some cool materials out there, then again it kinda looks just like a solid piece of carbon fiber.
#430
I was wondering after looking at these pics, what kind of material are the bulkheads made off? It doesnt look like ply laminated with carbon it looks like some other material, some type honeycomb core material laminated in carbon. I know there are a some cool materials out there, then again it kinda looks just like a solid piece of carbon fiber.
Wagner will probably chime in on this, but it's very strong and capable of bearing any loads imposed on it.
Lewis
#431
I was wondering after looking at these pics, what kind of material are the bulkheads made off? It doesnt look like ply laminated with carbon it looks like some other material, some type honeycomb core material laminated in carbon. I know there are a some cool materials out there, then again it kinda looks just like a solid piece of carbon fiber.
Tie material was researched and tested before use on XARF planes, and this material is used in commercial aviation as well.
Xtreme ARF will attend Jet Power this year, and we will have some samples of this material to show.
#439
I just received an email from a renowned pilot point me some of his concerns in cutting the former and supposed reduce its strength so bellow is my email answer to him:
"Thank you for the warning I really appreciate, there will be no problem to cut that material as it was done by Lewis, this material is stiff like steel, it is made with 9 layers of carbon fiber with two different types of carbon fiber with different orientation on the lay up give them an incredible strength plus 2 layers of structural core material, actually on the lab tests, forces were applied on the material at 90 degrees and it had a rupture in 1320 Kgf (it is about 3000 Lbf).
Regarding the servo boxes nothing was compromised once that part was untouched by Lewis and the servo box is glued in 4 of its 6 surfaces, you can not see but there is another former holding the servo box behind it.
Now my concern is from the people that has Feibao F100 and are doing the modification because FB material are different they use ply with 2 layers of carbon, this can be a problem and pilots are doing the modification without Feibao authorization, I believe that is my duty to inform this people, for the safe side, not to do anything before FB communication and actually this modifications is required for planes over 50 Lbs and they are flying bellow this weight."
So please consult the factory or dealers before do any modification in your jets, you maybe compromise the safety of your airplane.
"Thank you for the warning I really appreciate, there will be no problem to cut that material as it was done by Lewis, this material is stiff like steel, it is made with 9 layers of carbon fiber with two different types of carbon fiber with different orientation on the lay up give them an incredible strength plus 2 layers of structural core material, actually on the lab tests, forces were applied on the material at 90 degrees and it had a rupture in 1320 Kgf (it is about 3000 Lbf).
Regarding the servo boxes nothing was compromised once that part was untouched by Lewis and the servo box is glued in 4 of its 6 surfaces, you can not see but there is another former holding the servo box behind it.
Now my concern is from the people that has Feibao F100 and are doing the modification because FB material are different they use ply with 2 layers of carbon, this can be a problem and pilots are doing the modification without Feibao authorization, I believe that is my duty to inform this people, for the safe side, not to do anything before FB communication and actually this modifications is required for planes over 50 Lbs and they are flying bellow this weight."
So please consult the factory or dealers before do any modification in your jets, you maybe compromise the safety of your airplane.
#440
#442
Don't forget to install the two locking bolts in the lower part of the JR arm. Failure to do so could cause the arm to spring apart.
QUOTE=rchobbymodels;12073104]Has become to our attention an issue on the F100 elevator authority, for jets that is flying heavy (more than 52 Lb in weight), the nose is very slow to recover from a hard maneuver, we are working on this issue and have a solution already we are going to increase 1/2" on the elevator mechanism arm, this will transfer big momentum to the elevator correcting the known issue. So for the pilots that are flying less than 52 Lb there is no problem at all, for those that are on the heavy side we recommend do not fly with all armament and do not make any hard maneuver, the jet will fly good without any problem.
Lewis already made an adaptation on his F100 as shown in the picture below and he report great improvement.
We will send to our customer soon we have received the new elevator mechanism, but please be patient, this takes a while, we depend the 3rd part to CNC new mechanism and we have to follow their production schedule
Obs. The new orders will be update before goes to the customers
[/QUOTE]
QUOTE=rchobbymodels;12073104]Has become to our attention an issue on the F100 elevator authority, for jets that is flying heavy (more than 52 Lb in weight), the nose is very slow to recover from a hard maneuver, we are working on this issue and have a solution already we are going to increase 1/2" on the elevator mechanism arm, this will transfer big momentum to the elevator correcting the known issue. So for the pilots that are flying less than 52 Lb there is no problem at all, for those that are on the heavy side we recommend do not fly with all armament and do not make any hard maneuver, the jet will fly good without any problem.
Lewis already made an adaptation on his F100 as shown in the picture below and he report great improvement.
We will send to our customer soon we have received the new elevator mechanism, but please be patient, this takes a while, we depend the 3rd part to CNC new mechanism and we have to follow their production schedule
Obs. The new orders will be update before goes to the customers
[/QUOTE]
#443
My Feedback: (90)
Hello all, I'm curious to know what length of arm is on the servo? This seems like a poor solution to gain mechanical advantage. Would a 1/2" servo arm not suffice? The stabilator horn looks to be at least an inch tall from CL to rod end attachment. That would yield a 2:1 advantage, doubling torque from the servo.
#445
An inch tall CL arm just won't cut it. I could stall a 580 ounce servo with very little effort. Mine is now 1 1/2 inch tall, and the improvement is amazing! Going flying Thursday.
Hello all, I'm curious to know what length of arm is on the servo? This seems like a poor solution to gain mechanical advantage. Would a 1/2" servo arm not suffice? The stabilator horn looks to be at least an inch tall from CL to rod end attachment. That would yield a 2:1 advantage, doubling torque from the servo.
#450
Flew the F-100 again today. Shifted some more weight (battery) forward, and it's now dialed in. What a joy to fly! Gradually getting into my routine with it. Buck (Islander 208) shot some video today; maybe he will post soon.
Found out today that there is a set screw behind the top scissor link on the main gear. You will have to remove the pin to see it. This will lock the wheels and scissor link in place. There is also another near the top of the strut; with both locked down, the wheels will remain locked in place. Going to have some fun with Billy D next week at Jets Over The Valley!
Lewis
Found out today that there is a set screw behind the top scissor link on the main gear. You will have to remove the pin to see it. This will lock the wheels and scissor link in place. There is also another near the top of the strut; with both locked down, the wheels will remain locked in place. Going to have some fun with Billy D next week at Jets Over The Valley!
Lewis
Last edited by jeteye; 08-08-2015 at 04:39 PM.