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Official Freewing 90mm F-4 Phantom II Thread
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Our last name is Coggburn. The nickname "Rooster" has been with my father, my older brother, and myself. Sadly my son's generation probably doesn't even know who John Wayne is. Or Jeff bridges. I like both versions of the movie true grit. Anyways, my father was the maintenance chief, and "Rooster's Raiders" was a name given to his crew. Callie graphics is including that decal to go on the landing gear door.
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Originally posted by TedBull View PostOur last name is Coggburn. The nickname "Rooster" has been with my father, my older brother, and myself. Sadly my son's generation probably doesn't even know who John Wayne is. Or Jeff bridges. I like both versions of the movie true grit. Anyways, my father was the maintenance chief, and "Rooster's Raiders" was a name given to his crew. Callie graphics is including that decal to go on the landing gear door.I solemnly swear to "over-celebrate" the smallest of victories.~Lucky B*st*rd~
You'll never be good at something unless you're willing to suck at it first.~Anonymous~
AMA#116446
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I just pulled the tail section out of the box. The servo is glued in there pretty well. The pushrod is for sure flimsy. Think I want to upgrade all the pushrods. What rod ends and ball links are you using? Can you post a link? And a link to the 4-40 all thread ans carbon fiber sleeve? Thanks.
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Originally posted by TedBull View PostI just pulled the tail section out of the box. The servo is glued in there pretty well. The pushrod is for sure flimsy. Think I want to upgrade all the pushrods. What rod ends and ball links are you using? Can you post a link? And a link to the 4-40 all thread ans carbon fiber sleeve? Thanks.
I think it was this package
4-40 all thread
CF tube
Not the exact tube I used. It has to be 3mm ID to pass the 4-40 all thread.
I got my supplies a the local hobby shop.
The ones linked will work but may not be the best prices.
Cut the all thread to proper length to have at least 6 turns of threads engaged in both ball links.
Cut the CF tube to length so it will have appx 1/4 inch of adjustment possible tightening the second ball link vs what you think is the correct length pushrod.
Part of this is taken up by a 4-40 nut that will end up epoxied in place.
To epoxy the CF to the rod, put one ball link on the rod at least 6 turns
Apply epoxy to the threaded rod starting at appx 1/2inch from the end without the ball link coating it to the ball link.
Slide on the tube, turning it as you slide it on. It should push a little epoxy off that you have to clean up. (with practice you learn how thick to coat the rod.. too much is better than not enough)
Put a 4-40 nut on to hold the tube against the ball link and trap the epoxy.
Lay it on newspaper to cure.
Since the tube is mainly to prevent bending, some air in the tube is not a major problem. By laying it flat, the rod will bond to the tube very well with all the air on the side that is left up.
For inserting a short piece of threaded rd in each end f a long tube the technique is similar, but you's position the rod vertically with the end being glued down and a nut, clevise or ball link would trap the glue.
These pushrods are short enough that the weight of all thread full length in the tube is insignificant vs enough in the tube to make a secure bond with just inserted threaded rod ends.
You want less than 1/4 inch of threaded rod exposed between ball link and CF tube or nut.
With more practice setting this style pushrod up, you can get it down to 3 turns of exposed threads once the aircraft is properly trimmed.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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Removing the glued in servo.. slide a sharp knife down each side and cut most of the glue free.
Its OK to take some foam, since the purpose is to open air passage to cool the servo.
Taking measurements from anther servo to find where the wire exit the servo (so you don't cut it) Apply masking tape to the knife to mark s you will stay 1/4 inch from the wire and cut the servo free at the front and back.
You should now be able to pull the servo.
Adjust the servo opening by cutting foam for the replacement (if putting in a "full size" servo, as I have) mounting rails or ply plate and cooling air passages.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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Here's what mine looks like "after". Its a heavy rod and 4-40 ball link, very secure. (Since this pic was take I have also reinforced the servo mount)
Marc flies FW & FL: AL37, MiG-29, T45,F4, A4, A10, F104 70 and 90, P38, Dauntless SBD, Corsair, B17, B24, B26 & P61, Lipp.P19, ME262, Komets, Vampire, SeaVixen, FMS Tigercat, FOX Glider & Radian XL.
Rabid Models foamies, including my 8' B17 & 9' B36... and my Mud Ducks! www.rabidmodels.com
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Please note on mine I use the servo inner hole on the arm. I do this on most to increase the torque the servo can provide. I also usually dial in the appropriate increase in servo throw which also increases the servos resolution. Doing this on the F-4 elevator, F-18 pitch stabs, ailerons and flaps and on other planes could be the reason that I have had none of the servo issues others have reported.
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Looks like the DuBro 4-40 ball link. They are lighter than the Traxxas, but definitely up to the task. I went with the Traxxas simply because they were far less expensive at the local hobby shop.FF gliders and rubber power since 1966, CL 1970-1990, RC since 1975.
current planes from 1/2 oz to 22 lbs
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Along side of the A-10 and F-22, this F-4 has to be the best Freewing jet ever released. Such a great jet.My YouTube RC videos:
https://www.youtube.com/@toddbreda
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Originally posted by Aros View PostAlong side of the A-10 and F-22, this F-4 has to be the best Freewing jet ever released. Such a great jet.
Ps: Great picture Gentlemen. Again, well done.I solemnly swear to "over-celebrate" the smallest of victories.~Lucky B*st*rd~
You'll never be good at something unless you're willing to suck at it first.~Anonymous~
AMA#116446
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Originally posted by RuthR720 View PostOnly 25 feet is required to takeoff from a ramp. I may build a portable runway next.
https://youtu.be/P6d8VxsG_ig
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