CloudSniffer's blog - RC Groups
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Posted by CloudSniffer | Oct 18, 2017 @ 11:07 PM | 1,267 Views
11/8 The batch sizes keep getting bigger and the MN group build made this batch grow for sure. Things are moving along, the fuse formers, stab mounts, fin/rudder, and elevators are done. I have some wood coming but have enough to keep things moving until it arrives.

Corky
Posted by CloudSniffer | Oct 04, 2017 @ 10:25 AM | 1,550 Views
I little good luck goes a long way. I found that the HS55 servo fits perfect. Its a slight press fit between the bottom center sheeting and forward spoiler bay balsa covering support. I simply sawed the tabs off the servo, and pushed it in place until is met the back side of a half rib. The servo arm is in the correct position to lift the spoiler without any linkage.

I am using my flap switch with 2 spoiler positions. Each position has elevator offset programmed in so when the switch is deployed the glider goes straight. On the high position you can come in at a fairly steep angle with a controlled speed.

Once the servo was set up in place I just used a little silicon on the top edge to hold it in place. This way if I need to service it for some reason it can easily be removed without tearing up the plane.

Now, I had a little bag of little tiny magnets and need one. Ive spend over two hours looking for them and suspect they are hitch hiking around stuck to something else. Sneaky little things.
Posted by CloudSniffer | Sep 30, 2017 @ 01:18 PM | 1,662 Views
I am extremely pleased with how the Yellow Jacket 2M turned out. It exceeded my expectations for ease of build, fit, strength, and especially flight performance. Production is underway and I can do about 20 kits a month. I am finding that carbon fiber has become very popular lately, suppliers are stating the demand has increased quite a bit over last year. When they run out that appears to be the primary bottleneck right now. I am trying to get ahead of the curve by ordering larger quantities and looking at other suppliers.

My electric version weighs 18.8 oz with the specified components. I am able to balance it with no added weight.

The Line Launch weighs 15.8 oz and that is with 1/2 oz added to the nose. I am looking for ways to eliminate the nose weight.

The complete kit is $189.00 plus shipping using USPS Priority Mail 2-3 day US shipments.

Full size plans are provided for the wing and a scaled down plan sheet is provided for the fuse. Instructions are included on the plan sheets. Should you order a kit I can email a full size fuse sheet that may be easier to read if you eyes arent to good.

Orders can be placed by emailing sonoranlaserart@cox.net.

You will not be asked to pay until its ready to ship and at that point you will receive an email with a invoice and link to pay by CC or you can send via PayPal to my email address. Should your club desire to do a group build and order multiple kits please email me what your thinking and I will...Continue Reading
Posted by CloudSniffer | Jul 04, 2017 @ 11:26 AM | 2,990 Views
I want to point out some little changes I made on my line launch pod.

Balance and Weight
1. I originally used brass EZ Connectors on the rudder and elevator to secure the .025 music wire push rods. Since I needed a little nose weight I decided to remove them and fill the holes with epoxy, the re-drilled .025 holes for the music wire. I just made "L" bends and put a blob of epoxy on the rudder end so it does not come out. On the elevator end the "L" is captured so no epoxy blob leaving the stabilizer easily removable. The EZ Connectors weigh 4 grams which meant it would take an extra 12 grams or to offset that in the nose. That little change took 16 grams off the total weight.

2. The original tow hook design was a threaded rod bent to an "L" using nuts and washers on each side. Loosening a nut allowed you to adjust the position. During final assembly I did not feel like I could get the nuts tight enough to keep it from turning without risk of damaging or crushing the wood. I ended up eliminating the threads and just made a "U" deg bend at each 3/4" inside the pod towards the rear. The tow hook is now secured in a 3 piece 1/8 ply set and captured. Its held in place by a 4-40 bolt, washers and nut.

3. I am currently using 4.8V 480 mah NiMH battery from Aloft Hobbles. Its smaller and lighter and fits perfect. The batteries I received weigh about 1.1 oz and I had to add a 1/2 oz for balance. I am now realizing it makes little sense to add 1/2 oz of lead when I can fit a larger battery. As of this moment 10/4/17 they are out of stock but I will get a couple of these. Now you get a 1000 mah battery and no added weight if it works out.

https://alofthobbies.com/4-8-v-1000-...ck-square.html

I am very happy with how it launches and flies. Looking forward to some other flight reports.
Posted by CloudSniffer | Apr 20, 2017 @ 11:25 AM | 4,530 Views
I am pleased to announced that the Tarantula Hawk 2M Sailplane kit is finally ready. It features the AG35-36-37-38 airfoils same as the Allegro Lite. It has been redesigned for an easy build. It also has a nice tapered boom, with a tail section and pod that are also easy to build and look very nice (IMO).

The I-Beam spar uses 1/16" x 3/8" basswood caps with a balsa core and 1/16" shear webs. For electric and bungy its strong. If you want to launch it with an aggressive winch you can add CF and sand down the bass very easily.

The electric version was designed to fit a rear mount Turnigy SK3 2830 or 2826 motor using the 16mm/19mm bolt hole circles in the mount. The rear mount makes it possible to obtain a nicely shaped nose. My intention was to provide something that will accept a high quality low cost motor and I have found these work great.

The line launch version uses a pod that is 1.5" longer for balance. It includes a sliding tow hook and mount which you form from a 4-40 threaded rod.

The recently built electric version has an all up weight of 19.5ounces. The line launch is 16.75 ounces all up balanced. The servos, and battery are factors in the final weight.

There is a build thread that shows the progress of getting through the first build and to the current design. The kit includes a 36" x 48" build plan, and written instructions in English.

https://www.rcgroups.com/forums/show...la-Hawk-2M-RES

I believe I can make about 10 kits a month as I do this in my spare time. The kit price is $179 plus shipping.

Almost every part in the kit is laser cut. The bass spar cap is not laser cut because the center section is too long for laser.

If you have interest you can message me or send an email to sonoranlaserart@cox.net.