Carl Goldberg Ultimate 10-300 Build
02-06-2014, 11:46 AM
#52
The covering does add strength to the structure. But is also a great tool to take out a wing twist. Cover the wing as normal. Then use an incidence meter to find the twist. You will need another set of hands for this. Set the wing on a table where the center is close to the edge and the twisted end is hanging off the table. Put one hand one the center of the wing to hold it down. (a little pad under it is a help) put your other hand on the tip and apply pressure until it rotates slightly and makes wrinkles in the covering. Hold this position while a friend heats out the wrinkles on top and bottom of the wing with a heat gun. Keep holding the pressure on the wing till the covering cools. Check the wing with the meter again and repeat until you have it straight. Monocote is stronger than Ultracote and has more holding power but this will work with either.
It is possible to do this without help if you can use the fuse to hold the wing in place. It depends on the plane and the shape of the fuse and the direction of twist. You may get lucky and the tail of the fuse will push against the table while you twist. Just be sure and set it where both sides of the covering can be heated.
David
It is possible to do this without help if you can use the fuse to hold the wing in place. It depends on the plane and the shape of the fuse and the direction of twist. You may get lucky and the tail of the fuse will push against the table while you twist. Just be sure and set it where both sides of the covering can be heated.
David
03-31-2014, 09:06 PM
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Hello everyone,
Just to let you all know, I haven't given up on this one. Most of the work lately has just been normal building and isn't any different than the kit build. Wing sheeting is done, ailerons are done and mounted, and I'm working on the servo mounts in the wings.
Again, nothing really different than the normal kit build.
Next real challenge will be the upper wing mount, and I'm going to go with a threaded insert into a basswood block, then make a wing saddle for it to sit in and then bolt up from underneath. I hate bolts that you can see, so I didn't want to bolt down from the top.
hope to be on to finishing up the fuse in a couple weeks.
Things have really slowed down now that spring is here. I was really hoping to have this done for flying this year, but it's not looking good.
More to come shortly.
Just to let you all know, I haven't given up on this one. Most of the work lately has just been normal building and isn't any different than the kit build. Wing sheeting is done, ailerons are done and mounted, and I'm working on the servo mounts in the wings.
Again, nothing really different than the normal kit build.
Next real challenge will be the upper wing mount, and I'm going to go with a threaded insert into a basswood block, then make a wing saddle for it to sit in and then bolt up from underneath. I hate bolts that you can see, so I didn't want to bolt down from the top.
hope to be on to finishing up the fuse in a couple weeks.
Things have really slowed down now that spring is here. I was really hoping to have this done for flying this year, but it's not looking good.
More to come shortly.
04-02-2014, 06:46 PM
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Will do on documenting the wing mounting. Since it's a "design - build" process, I'll document it and then when I know it all works, I'll outline how I did it, and not only what worked, but if something didn't work, I'll let you all know also.
I need to get back on the fuse so I can mount the cabane struts and get the incidence set and make sure the saddle is correct. I'll need to make a template of that so it will be easier the second time.
I need to get back on the fuse so I can mount the cabane struts and get the incidence set and make sure the saddle is correct. I'll need to make a template of that so it will be easier the second time.
11-30-2014, 09:47 AM
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Interesting timing. I just got started back on the project again last week and am figuring out battery location and motor mount.
Right now both wings and ailerons are done and I've done some of the basic building on the fuse, but need to get the battery location figured out. This is the first electric, so I'm going to stop by a club members shop who builds a lot of electrics for some help next weekend.
I'll hopefully get an update on progress shortly.
Right now both wings and ailerons are done and I've done some of the basic building on the fuse, but need to get the battery location figured out. This is the first electric, so I'm going to stop by a club members shop who builds a lot of electrics for some help next weekend.
I'll hopefully get an update on progress shortly.
12-23-2014, 08:46 PM
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Finally making some progress thanks to Paul from the local club who showed me how to construct a motor mount I was most impressed with.
Here are the images of how it was constructed in his shop.
Everything was constructed out of 1/4 inch ply and 10 x 24 threaded rods
Last image is the mount bolted to the firewall with the motor and epoxied in.
With the threaded rods it makes it fully adjustable with just a twist of the nuts holding the motor mount plate.
Here are the images of how it was constructed in his shop.
Everything was constructed out of 1/4 inch ply and 10 x 24 threaded rods
Last image is the mount bolted to the firewall with the motor and epoxied in.
With the threaded rods it makes it fully adjustable with just a twist of the nuts holding the motor mount plate.
Last edited by abbott915; 12-23-2014 at 08:51 PM.
02-16-2015, 09:18 PM
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Getting back on this project, finally!
Stopped by Metal Supermarket and they hooked me up with some 1/16th inch thick 5052 aluminum and cut it to length and width for me.
Using a cabane I had as a template, bent it to shape and installed it per plan.
Also got the front sheeting on both sides and the center section.
Interplane struts are also done.
Next will be mounting the wings and I've put alot of thought into it, so now I'll see if it works. If it does, I'll post the results. If it doesn't, well, back to the drawing board and I may have to build another wing.
Stopped by Metal Supermarket and they hooked me up with some 1/16th inch thick 5052 aluminum and cut it to length and width for me.
Using a cabane I had as a template, bent it to shape and installed it per plan.
Also got the front sheeting on both sides and the center section.
Interplane struts are also done.
Next will be mounting the wings and I've put alot of thought into it, so now I'll see if it works. If it does, I'll post the results. If it doesn't, well, back to the drawing board and I may have to build another wing.
02-22-2015, 08:23 PM
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Finished the front sheeting and mounted the lower wing and interplane struts to the lower wing. Checked the incidence to the fuse and it was right on.
Mounted the upper wing, and the incidence was very very close, only a very slight adjustment.
Looked at the blocks I had put in the upper wing to use as my mounting and realized they weren't in the right spot. Front block will work, barely, but I had to make a new block in the rear. Next build I'll move the ply joiner forward at least a half inch maybe more to leave room for a rear mounting block.
The plan is to put in a threaded insert into the bottom of the top wing and mount the wing from the bottom. I hate seeing screws and bolts, so this way the top of the wing will look clean.
I still need to make small shims for between the cabanes and the wing so the wing has support.
Mounted the upper wing, and the incidence was very very close, only a very slight adjustment.
Looked at the blocks I had put in the upper wing to use as my mounting and realized they weren't in the right spot. Front block will work, barely, but I had to make a new block in the rear. Next build I'll move the ply joiner forward at least a half inch maybe more to leave room for a rear mounting block.
The plan is to put in a threaded insert into the bottom of the top wing and mount the wing from the bottom. I hate seeing screws and bolts, so this way the top of the wing will look clean.
I still need to make small shims for between the cabanes and the wing so the wing has support.
Last edited by abbott915; 02-22-2015 at 08:27 PM.
03-01-2015, 07:54 AM
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Everything with the upper wing came out perfect. The thing I didn't think about with the inserts was setting the incidence was just a matter of adjusting the depth of the insert. Once set, the incidence was set. It was actually right on to start, so there wasn't any adjustments to make.
doing the rear stabs now, and after that the turtle deck. The turtle deck is the last major piece to cut and make sure my cadd file is complete and all the pieces fit.
From there on out, just basic stuff.
I'll post updates as it progresses.
doing the rear stabs now, and after that the turtle deck. The turtle deck is the last major piece to cut and make sure my cadd file is complete and all the pieces fit.
From there on out, just basic stuff.
I'll post updates as it progresses.
03-02-2015, 07:24 AM
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Thanks David, I will be sure to get it rolled up for a few days. My last one I did just that, and didn't have any problems.
Hoping to get it cut out during the week, and ready to install this weekend.
Just in case, I did purchase enough ply to make two, or in case I measure once and cut twice instead of measure twice and cut once
Hoping to get it cut out during the week, and ready to install this weekend.
Just in case, I did purchase enough ply to make two, or in case I measure once and cut twice instead of measure twice and cut once
Last edited by abbott915; 03-02-2015 at 07:27 AM.
05-01-2015, 09:00 AM
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09-18-2015, 07:58 PM
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Battery box location and installation, please feel free to give me any feedback on anything you think might help or other ideas I might have missed. This idea actually came to me in the middle of the night when I woke up, and I think it will work great, at least so far so good IMHO.
All the pictures posted with this post are of the plane on its back. You’ll see some clamps and screws, until I knew I had the balance where I wanted it, I didn’t want to start permanently mounting the servos and battery box.
I used an old 6-cell 5800mah battery for weight and size.
The box itself is 2.5” x 2.5” and 6.5” long.
Construction and location allows for plenty of movement of the battery either forward or backwards depending on the battery used and the box can also be moved pretty easily if needed.
It is mounted against Former “B” and rests on the 1/8[SUP]th[/SUP] x 1/2 balsa doubler, (again it rest on the balsa doubler because the plane is upside down).
The other end is where the cabane support mounts right in front of the servos.
The servos are mounted per plan location, or close.
Image B1 shows the box, the screws screwed into Former “B”, the bottom of the balsa will rest up against the balsa doubler on Former “B”. The rear of the box and the mounting plate is angled to fit flat on the fuse top.
Image B2 shows the box location in the fuse
Image B3 shows the front of the box mounted to Former “B”
Image B4 shows the rear of the box resting on the fuse top right next to where the cabane mounts. This area was reinforced during fuse construction. You can also see the servos mounted per plan behind the box.
Image B5 shows my modification to the fuse bottom front. There is a bit of an illusion things aren’t square with the landing gear because of a piece of ply I temporary mounted for the hatch.
Image B6 shows the hatch.
Image B7 shows the cutout of the cowl with the same shape as the hatch.
Image B8 shows the battery slides right in.
Image B9 shows the cowl and hatch in place. The back of the hatch fits under the landing gear, so the only thing needed is a latch on the front.
I do plan on cutting holes for venting in the hatch and battery box.
All the pictures posted with this post are of the plane on its back. You’ll see some clamps and screws, until I knew I had the balance where I wanted it, I didn’t want to start permanently mounting the servos and battery box.
I used an old 6-cell 5800mah battery for weight and size.
The box itself is 2.5” x 2.5” and 6.5” long.
Construction and location allows for plenty of movement of the battery either forward or backwards depending on the battery used and the box can also be moved pretty easily if needed.
It is mounted against Former “B” and rests on the 1/8[SUP]th[/SUP] x 1/2 balsa doubler, (again it rest on the balsa doubler because the plane is upside down).
The other end is where the cabane support mounts right in front of the servos.
The servos are mounted per plan location, or close.
Image B1 shows the box, the screws screwed into Former “B”, the bottom of the balsa will rest up against the balsa doubler on Former “B”. The rear of the box and the mounting plate is angled to fit flat on the fuse top.
Image B2 shows the box location in the fuse
Image B3 shows the front of the box mounted to Former “B”
Image B4 shows the rear of the box resting on the fuse top right next to where the cabane mounts. This area was reinforced during fuse construction. You can also see the servos mounted per plan behind the box.
Image B5 shows my modification to the fuse bottom front. There is a bit of an illusion things aren’t square with the landing gear because of a piece of ply I temporary mounted for the hatch.
Image B6 shows the hatch.
Image B7 shows the cutout of the cowl with the same shape as the hatch.
Image B8 shows the battery slides right in.
Image B9 shows the cowl and hatch in place. The back of the hatch fits under the landing gear, so the only thing needed is a latch on the front.
I do plan on cutting holes for venting in the hatch and battery box.
Last edited by abbott915; 09-18-2015 at 08:07 PM.
09-18-2015, 08:05 PM
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Another update:
Wings are complete and covered and I've done a full mock after mounting the battery box to make sure the CG was good, and it was right on, truly shocked me!
I only have the fuse to cover now and then the little stuff that always seems to take forever to complete, but at least I can now see the end of the two year process.
I hope to see it fly here in a couple weeks, and will post updates then.
Wings are complete and covered and I've done a full mock after mounting the battery box to make sure the CG was good, and it was right on, truly shocked me!
I only have the fuse to cover now and then the little stuff that always seems to take forever to complete, but at least I can now see the end of the two year process.
I hope to see it fly here in a couple weeks, and will post updates then.
