Skymaster F-18 1/5.75 scale build/assembly video thread. F18
05-29-2020, 07:50 PM
#27
Thread Starter
My Feedback: (1)
I think you would have benefited a lot by putting a reaaally short servo arm for the flaps and installing the pushrod pushing through the trailing edge of the wing. That way you would have gotten a full movement range for the servo and mechanical lock for down or up , depending how much your servo´s angle range is.
Now you get 30 degrees out of your servo movement and also a long arm--> much more force needed.
I have done a couple of wings that way. Harder to setup but..
Now you get 30 degrees out of your servo movement and also a long arm--> much more force needed.
I have done a couple of wings that way. Harder to setup but..
I did move the ball down on the servo horn to get more resolution.
06-04-2020, 06:32 AM
#29
Thread Starter
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Here are some pics relating to the elevator install.
Manual says 55mm and this is incorrect. I assumed it should be 25mm and this is correct. That measurement worked.
Angle head screws are the ones to use on the elevator. Button head are for the leading edge flaps. In order to get the servo arm close to the fuse a counter sink needs to be created on the servo horn.
Don't forget the washers inbetween all the bearings, servo arm and nut.
Manual talks about cutting a slot etc but the slot is already made and all lined up.
Manual says 55mm and this is incorrect. I assumed it should be 25mm and this is correct. That measurement worked.
Angle head screws are the ones to use on the elevator. Button head are for the leading edge flaps. In order to get the servo arm close to the fuse a counter sink needs to be created on the servo horn.
Don't forget the washers inbetween all the bearings, servo arm and nut.
Manual talks about cutting a slot etc but the slot is already made and all lined up.
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gpman (06-04-2020)
06-12-2020, 08:38 AM
#31
I learned this on my F-14 the stab mounts were stupid and not safe, using light ply for servo mounting makes you wonder what they are thinking. So when I did my f-18 like this I knew from the get go it had to be done. Plus you need to make sure you make the bearing on the servo arm parallel to the shaft of the stab don’t trust the mount angle in the fuse, they can be off a lot.
06-14-2020, 08:43 AM
#32
Thread Starter
My Feedback: (1)
I learned this on my F-14 the stab mounts were stupid and not safe, using light ply for servo mounting makes you wonder what they are thinking. So when I did my f-18 like this I knew from the get go it had to be done. Plus you need to make sure you make the bearing on the servo arm parallel to the shaft of the stab don’t trust the mount angle in the fuse, they can be off a lot.
06-14-2020, 10:43 AM
#34
probably too late, but I always replace their ball ends with dubro hvy duty and then use titanium rods. May want to look at my build on the rudder stuff as well.
Last edited by FenderBean; 06-14-2020 at 10:45 AM.
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gpman (07-06-2020)
07-06-2020, 07:39 AM
#41
Everyone is using my idea on the canopy, trend setter lol nice work I recommend putting longer pins on the front the stock are too short and can pull out.
And if you havent figured it out already you have to induce some slop in the open/close or the it doesnt work correctly or at least mine didnt.
And if you havent figured it out already you have to induce some slop in the open/close or the it doesnt work correctly or at least mine didnt.
Last edited by FenderBean; 07-06-2020 at 07:43 AM.
07-07-2020, 06:21 AM
#42
Thread Starter
My Feedback: (1)
Everyone is using my idea on the canopy, trend setter lol nice work I recommend putting longer pins on the front the stock are too short and can pull out.
And if you havent figured it out already you have to induce some slop in the open/close or the it doesnt work correctly or at least mine didnt.
And if you havent figured it out already you have to induce some slop in the open/close or the it doesnt work correctly or at least mine didnt.
Keith, did yours have the 3 side hooks as well on each side?
07-07-2020, 08:01 AM
#43
One thing I found that I really like about using servo/linear actuator for both lock and the opening is I found I can adjust the curve in my 28X to compensate for the "slop" needed for it to work. So I can make the lock go too far and than back off when needed. I'll include it with one of the videos when it's all complete but I understand what your saying.
Keith, did yours have the 3 side hooks as well on each side?
Keith, did yours have the 3 side hooks as well on each side?
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Canadian Man (07-08-2020)
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gpman (07-16-2020)
07-23-2020, 10:42 PM
#47
Great videos
Is the guy your building for local if so could you maybe do a video of the first flights. I may be wrong in this statement but it seem to be very few success stories on this particular F-18.
Thanks
David
Is the guy your building for local if so could you maybe do a video of the first flights. I may be wrong in this statement but it seem to be very few success stories on this particular F-18.
Thanks
David
07-26-2020, 05:15 AM
#49
Thread Starter
My Feedback: (1)
His previous one was successful once it was flying but it wasn't a long success story.
07-26-2020, 05:19 AM
#50
Thread Starter
My Feedback: (1)
The plugs for the GSU's are just standard servo connector plugs you can buy. I purchased these from Dreamworks but they are available many places. It would definitely be an easy print for a 3D printer.
I believe this is what you were talking about?