Yotaman1985
Very Strong User
How do you guys usually hold servos in while gluing? My method this time is a tin full of lead bbs precisely balanced on a mixing cup... 
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Show us what you are working on..
- Thread starter Wayne
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Chris
Moderator
I have heard this a few times.... Can't wait!The more I retire, the busier I get.
Yotaman1985
Very Strong User
That would be perfect
thenated0g
Very Strong User
i do something similar or if its close to an edge some light clamps
Yotaman1985
Very Strong User
Ive got some cheap plastic clamps for this reason but unfortunately couldnt reach this one so I had to get creative. Lol
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JustinMader
Active User
For you all that epoxy your servos right to the wing: how much of a pain is it to remove them if one dies? I've always stuck with bolting or hot glue as servo replacement is a regular part of my treebashing.
Yotaman1985
Very Strong User
For this reason I try to always use some sort of mount. My photo is really a servo in an LDS mount and I am gluing the mount into the wing. I have a layer of plastic (plastic sandwich bag) between the servo and the frame so the servo doesnt get glued in. The tail of the Forza is really tight and designed to glue in the servos so not quite sure what I am going to do there as I would really like them to be removable if possible.
Wrap them in tape then all u do is cut the tape off to remove the servo
thenated0g
Very Strong User
Was a little worried about the strength of my P-38's horizontal stabilizer, as its almost as wide as the wingspan of a lot of my other slopers, so i added some light fiberglass to both sides with some carbon where servos and horns will be going.
thenated0g
Very Strong User
Trying to get the P-38 up to the point where i can glue the main components together. The central wing, motor/tail pods, and horizontal stabilizer.
The main wing is feeling a little thin so i wanted to stiffen it up. I sprayed both sides with super77 contact adhesive, waited until not tacky and covered with some biweave fiberglass packing tape. I wont cover the entire plane with it but it works good on wings to make them a long stronger and more rigid once you iron on a covering to it later. Only issue is bubbles between layers.
The main wing is feeling a little thin so i wanted to stiffen it up. I sprayed both sides with super77 contact adhesive, waited until not tacky and covered with some biweave fiberglass packing tape. I wont cover the entire plane with it but it works good on wings to make them a long stronger and more rigid once you iron on a covering to it later. Only issue is bubbles between layers.
Yotaman1985
Very Strong User
One pair of Forza wings finished. Now on to the Fuse...
thenated0g
Very Strong User
Scx24 action in fort Bragg this weekend
Yotaman1985
Very Strong User
Got most of the fuse finished off today. Epoxied in the ballast tube and avionics tray. Decided to make it a top load ballast tube and Im working on designing a spring loaded, 3d printed stopper for it. Also fit my battery and designed/3d printed a mount for my reciever. Going to custom make all the servo wiring so its the perfect length too. Waiting on some more epoxy to arrive so I can install the elevator/rudder servos. Almost there!
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Yotaman1985
Very Strong User
Since Im waiting for more epoxy to finish the Forza, I moved back over to the Z1 and making the vertical fins. Got some balsa from Aloft and cut out the fins using one of my 3d printed ones as a template. Cut out a small piece of ply to reinforce the screw hole area and tacked some carbon tow in place with CA to hopefully stiffen it up a bit. Gonna try my hand at glassing them later this week/weekend and will report back.
RafaelAvila
Moderator
Doc J
Very Strong User
Hi Yota, I just use a small cylinder of PE foam a bit longer than the gap between the last slug and the end of the tube. It's simple, cheap, and provides a buffer if the nose stops quickly.
Lovely neat build by the way.
Cheers,
Doc,
Yotaman1985
Very Strong User
Thanks Doc,
I may go that route for simplicity although I dont have ballast so the tube wont be used anytime soon. Ill cross that bridge when I eventually get some ballast for it. I feel like I remember reading that this glider does best if the wings are loaded up first and then fuselage tube, does that sound right?
Generally speaking...
Wing tubes generally take stress on the wing joiner and joiner box, and the mass in the wings can help reduce the effects of wind gusts in the roll axis. Many times wing ballast will alter the CG location depending on the placement of the ballast chamber(s).
Fuselage ballast helps maintain roll rate, and generally speaking is easier access for quick changes. Typically they are built so they do not alter the CG location, or slightly biased to add a bit of nose weight.
Wing tubes generally take stress on the wing joiner and joiner box, and the mass in the wings can help reduce the effects of wind gusts in the roll axis. Many times wing ballast will alter the CG location depending on the placement of the ballast chamber(s).
Fuselage ballast helps maintain roll rate, and generally speaking is easier access for quick changes. Typically they are built so they do not alter the CG location, or slightly biased to add a bit of nose weight.
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