What's new
Aloft Forums

Welcome to Aloft Forums. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Micro GL - They Said It Couldn't Be Done . . .

Have not played with 1 mil but not too surprised it is giving you some trouble. The thinner films just get tougher and tougher to get decent results for me. I'm not a gifted covering expert. It is one of those tasks I tolerate.. I enjoy the structural parts a lot more than covering.
 
They said it couldn't be done. No, wait, they said it shouldn't be done. Er, uh, now I remember, it doesn't need to be done. Yeah, that's the ticket!

So, as previously mentioned, I live in MO and travel to SoCal to see family from time-to-time. I like to get in some slope soaring there and wanted to build a Micro GL with split wings. Understanding it's a small plane with a 30" wing span, that was still too big to fit into an airline carry-on. So, here's my build.

I built all four wing panels following the plan, the main difference was not gluing the center sections together.


Then, I made things hard on myself. I cut a piece of 3.2 mm CF Tube to fit across the Right and Left bays, Root R1 to the Second R1. I set the tube on top of the Root R1s, with the wing dihedral set and measured down from the ends to the bay 'floor'. Used that measurement to located a hole in the end of R1, which I drilled through. Doing this again from scratch, I would have just notched down Root R1 until the CF Tube was where I wanted it.


The next place I made things hard for myself was worrying about maintaining alignment of the CF Tube while it was glued in place. I left the tube in one piece, instead of splitting it. Then, had to cut it between the two Root R1s. Dug into the surfaces of the ribs cutting the tube, but got them apart. In retrospect, I would have been just fine to put the 1.58mm joiner CF Rod into the pieces of tube to maintain alignment. It turned out fine, as I had plans to laminate a 1/32" piece of basswood to the ends of the ribs anyway.


The CF Tube was secured by CA with balsa sawdust added. I also placed an alignment pin, adding a little balsa reinforcement inside of R1 for the pin. Drilling for that pin got a little close to the surface, but no worries, Filled in with a little CA, balsa sawdust and there will be balsa sheeting on top. Pin will be glued into the left root, to prevent loss.


CF Rod for joiner and alignment pin glued on the left side. Root ribs top sheeted. I cut new top sheet pieces to cover the basswood addition to R1, as the originals were not wide enough after adding the basswood.


Left inner and outer panels glued together, setting up.


A little spritz with some flat black paint for the wings and tail feathers and it's ready to be covered. 1mm Laminating Film will be here this week. I'm leaving the fuselage 'natural' and it will all be covered clear.


I did not think to do before and after weights to figure out how much weight I might have added with my plan variation. The CF adds less than a Gram. The paint will add a little bit.

I have a DSM2 micro receiver and sub-micro servos that I pulled out of a spare Lightning Bug DLG fuselage that I'm figuring out the placement for.

I'll post a finished picture when I get done.

Regarding flying . . . what wind range will the Micro GL tolerate? Can you add ballast to fly into stronger wind?

Cheers!

John
Nice mod on your micro. Your thought about using the rod in the tube to align during gluing is a good idea and a common technique. If there is any chance of glue entering the tube and bonding the rod during the gluing process simply coat the rod with vaseline to prevent adhesion. Keep posting pics, builds are always fun.
 
Got back from two weeks out of town. Just finished covering the other wing half, making servo/control horn connections and setting C.G.


All Up Weight, with 15Gm of lead in the nose and the paper clip tow hook,, is 59Gm. Hmmmm, may end with a tad more after I add something to cover the center-line, between the rubber band and the wing.


I used 1 Mil laminating film on the wings and tail empenage; 1.5 Mil L.F. on the body. For reference, the 1 mil laminating film weight appears to come out to about 22Gm/Sq. Meter (a 30x30cm piece weighed 2Gm.)

Winds are currently 8 MPH and gusting, so I'm not ready to go out and toss this at the moment. Maybe they'll die down this evening before it gets dark.

Cheers!

John
 
Anybody have ideas on how much throw on control surfaces??
I just went with the max throw my little servos would give and will adjust as needed with Expo/Dual Rates.

Winds have been in the mid-teens the last couple of days and finally died down a bit this evening. Had a first toss to check trim and it's a real floater. Flew nice. The only problem I had was with the 1/64" plywood. Apparently the elevator control horn dragged across a rock on landing and broke off. Similar to what happened to my hatch pull, which separated on pulling the hatch. Replaced it with a washer.


John
 
Did you add any nose weight on yours?
Yes, it came out tail heavy; 15 Grams of lead shot in a tiny zip-lock, alongside the battery..

In other news, I'm 'Travel Ready'. This is a 'standard' carry-on bag, Samsonite 9x14x22" Spinner. Some Aloft Hobby Shipping boxes fit inside very convenientyl and I ripped some foam to fit inside of those pieces. The nose hole for the fuse had to go through both pieces to allow room for the tail and is padded under the nose with a piece of bubble wrap. The wings are just inserted into cuts in one piece of foam. Tx and some minor spare parts fit into the zippered side. Ready to fly!
1683217009351.png
 
Ugh one question. The pic in post #27, did the stand the glider is resting on come with the Aloft kit? My kit was a Red original so I’m wondering if Aloft added something to the kit.

Hank
 
  • Like
Reactions: Red
Ugh one question. The pic in post #27, did the stand the glider is resting on come with the Aloft kit? My kit was a Red original so I’m wondering if Aloft added something to the kit.

Hank
It was an option. Aloft has them as well.
 
Ugh one question. The pic in post #27, did the stand the glider is resting on come with the Aloft kit? My kit was a Red original so I’m wondering if Aloft added something to the kit.

Hank
Hi Hank,

Yes, stand was an included piece of laser cut materials.

John
 
Does anyone know? I have never sloped before and thinking about taking this to the Destin beach area this summer. Good idea?? or not. Will they let you even fly one at beach? So many BS rules nowdays. Figure at the back of the flat beach they usually have a 10-15 foot sand berm that might get some lift off of.
 
Does anyone know? I have never sloped before and thinking about taking this to the Destin beach area this summer. Good idea?? or not. Will they let you even fly one at beach? So many BS rules nowdays. Figure at the back of the flat beach they usually have a 10-15 foot sand berm that might get some lift off of.
Perfect brim flier.
 
Does anyone know? I have never sloped before and thinking about taking this to the Destin beach area this summer. Good idea?? or not. Will they let you even fly one at beach? So many BS rules nowdays. Figure at the back of the flat beach they usually have a 10-15 foot sand berm that might get some lift off of.
Take it and fly it Freecrowder! It'S weight falls WELL under UAV/UAS rules. You have to register aircraft between 250G/8oz & 55 Lb. September of this year you'll have to have ID transmit capability of the above weight aircraft, or fly in sFRIA - not so with a micro.
 
Had my first full flight with the Micro GL. Flew GREAT! Didn't even fold the wings with a loop. <grin> Winds at Bluff Park were in the 8-10MPH range, so it was a little bumpy, but it got some great altitude.

Unfortunately, that has been the only flight so far. Brought it in to add some ballast and see how it does with the wind. Minor 'donk' from a couple of feet knocked my servos loose. No problem, reattach it with a drop of CA. Doing a control surface check prior to toss and the rudder is just grinding, not responding. There's no way that minor 'donk' stripped a gear?!

Have had to settle for only flying the Weasle for a few days. New servos ordered, received and one installed. Hoping to get back out in the near future to fly again.

Several guys were impressed with the kit, the build, the lightness and look of the Micro GL. Told them it was available on Aloft!

John
 
How long was the flight! And were you able to perform the dive test to set the CG?

It takes me about 10 flight to trim out a model. This is to look for issues with mass, warps and control response.

I fear that with micro servos the gear train is highly susceptible to damage. I strip more just with hanger rash than any other cause. Heck, even a stalled servo often strips the gears.
 
Back
Top