Jet legend F-4 "Journey Begins"
07-19-2011, 07:40 PM
#403
RE: Jet legend F-4
Early in the thread, I had mounted an air cylinder in the gun pod to operate the small front nose gear door. Well, it just didn't pan out as far as getting the timing right and after much too much tinkering, I resorted to the mechanical linkage method. Works like a charm.
07-20-2011, 04:43 AM
#407
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RE: Jet legend F-4
Wow Ronnie, with that gorgeous truck, now you can take the house with you 
ok how did you hook that door up, to the servo, most folks just use a rubber band
ok how did you hook that door up, to the servo, most folks just use a rubber band
ORIGINAL: Countryboy
My little Civic SI just wasn't going to cut it as a transport vehicle so something had too be done. The answer was a 2008 Silverado 3500 HD.
My little Civic SI just wasn't going to cut it as a transport vehicle so something had too be done. The answer was a 2008 Silverado 3500 HD.
07-20-2011, 06:46 PM
#410
RE: Jet legend F-4
Dave,
I'll try to explain. The front nylon piece that secures the steering servo was drilled & tapped for a 4/40 bolt which goes through a ball link. The link is spaced from the nylon so that it clears the retract frame on retraction. A small piece of hardwood was shaped to fit the curvature of the door. The hardwood block was drilled for a countersink bolt so as not to protrude on the back side. This allows the hardwood block to be epoxied flush to the door. Attached to that bolt is nylon horn that the quick link on the opposite end of the linkage attaches to. The distance from the bottom flange of the door up to the center of the bolt is 1.2" and the bolt is off center to the right of the strut center (looking from rear) by about .5" Hope this explains it well enough.
I'll try to explain. The front nylon piece that secures the steering servo was drilled & tapped for a 4/40 bolt which goes through a ball link. The link is spaced from the nylon so that it clears the retract frame on retraction. A small piece of hardwood was shaped to fit the curvature of the door. The hardwood block was drilled for a countersink bolt so as not to protrude on the back side. This allows the hardwood block to be epoxied flush to the door. Attached to that bolt is nylon horn that the quick link on the opposite end of the linkage attaches to. The distance from the bottom flange of the door up to the center of the bolt is 1.2" and the bolt is off center to the right of the strut center (looking from rear) by about .5" Hope this explains it well enough.
07-21-2011, 02:34 PM
#416
RE: Jet legend F-4
Billy,
I picked the module up through Slough RC using the plastic. You will have to order from the website. No problem in ordering & getting the merchanise from these people.
http://www.sloughrc.com/default.asp?...emid=P-RM12-MX
I picked the module up through Slough RC using the plastic. You will have to order from the website. No problem in ordering & getting the merchanise from these people.
http://www.sloughrc.com/default.asp?...emid=P-RM12-MX
07-23-2011, 07:03 AM
#419
RE: Jet legend F-4
ORIGINAL: ace-RCU
Thanks Ronnie, I see there out of stock.
Thanks Ronnie, I see there out of stock.
http://www.skylinemodels.co.uk/RM12-...le-for-JR.html
11-07-2011, 04:18 PM
#423
RE: Jet legend F-4
Holy Jesus, after two years the JL F-4 took to the sky today. Met up with my good friend Lewis Patton who did the maiden honor at the Lebanon/Springfield airport. Couldn't have asked for a better day to do it as temps were in the mid 60's with a slight cross wind. After fueling and putting air to the retracts & brakes, fired the Behotec up & taxied out about 60 paces and did a range check. All was well, so on out to the main runway, lined up on the center line and hit the throttle.
Due to my miscalculation on where elevator neutral should be, the F-4 rotated pretty much on it's own after speed built up and required about 3/4 of the down trim and a few clicks of left aileron to fly level. First flight was kept short & conservative in just getting it trimmed and getting a feel for it. Second flight, Lewis rolled it inverted to check CG which is spot on at 315mm with main tanks full. It moves along at a pretty good clip at half throttle and sets up beautiful in the pattern for landing. Takeoff flap of 15 degrees was all that was used in both takeoff & landing with no pitch change. Half throttle in the landing approach all the way until lined up with the runway and start easing the throttle back and she just settles in. Since Lewis was at the sticks, maybe he can chime in and give a better description and his thoughts on the JL F-4
Didn't get any pics or video this round, maybe next time. To say that I'm elated would be an understatement. Thanks for making my day Lewis.
Due to my miscalculation on where elevator neutral should be, the F-4 rotated pretty much on it's own after speed built up and required about 3/4 of the down trim and a few clicks of left aileron to fly level. First flight was kept short & conservative in just getting it trimmed and getting a feel for it. Second flight, Lewis rolled it inverted to check CG which is spot on at 315mm with main tanks full. It moves along at a pretty good clip at half throttle and sets up beautiful in the pattern for landing. Takeoff flap of 15 degrees was all that was used in both takeoff & landing with no pitch change. Half throttle in the landing approach all the way until lined up with the runway and start easing the throttle back and she just settles in. Since Lewis was at the sticks, maybe he can chime in and give a better description and his thoughts on the JL F-4
Didn't get any pics or video this round, maybe next time. To say that I'm elated would be an understatement. Thanks for making my day Lewis.
