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Alpha 60 RTF - 8/23/2007 2:42:10 AM   
jagnweiner



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In another thread, I promised JerKap that I would do a review of an Alpha 60 RTF that I am putting together for my father-in-law from Oklahoma. I'm no MinnFlyer, but here it is:

We began by opening up the very large box. As I mentioned previously, my father-in-law didn't want to open anything until he was here with me, so I got first crack at it. Everything seemed well packed, so as to avoid damage (more on that later). The ads say the plane can be ready to fly in less than an hour. We'll see.

Wanting to play by the rules, I started with the instruction book. Step 1 is assembly of the wing. Upon inspecting the wing halves, I found a typical high quality Hangar 9 UltraCote covering design. Only one problem: It was very wrinkled, more so than any other Hangar 9 ARF I have ever seen. I started out shrinking it up with a covering iron, but soon decided that was too slow and moved to a heat gun. After about 20 minutes of work, I got things looking pretty good. Boy, I'm going to have to hurry to get this done in under an hour.

Two attachment options are provided, rubber bands or bolts. We are going with bolts. Regardless of the attachment method, the wings halves are joined in the same way. There is a large aluminum tube that fits perfectly into tubes in each half near the spar. This sets the dihedral. There is a smaller pin near the trailing edge that keeps everything in place.

The manual then instructs you to apply a narrow piece of tape to the joint to hold the wing halves together. I'm sorry, but I can't go for that. No can do. (Isn't that a song?) Even though both halves will be bolted to the fuselage, I'm not comfortable just having the wing halves taped together. Accordingly, I applied a thin layer of 30 minute epoxy to one side and slid the wing halves together. A perfect fit. As long as I had the epoxy out, I cut the covering away from the two holes in the leading edge. I chamfered the provided dowels for wing mounting and installed them in the holes. I also cut the covering away from the holes for the wing bolts.

The aileron servo was already installed in one wing half, so I connected the pushrods to the torque rods. The ailerons seem to be set pretty well without any further adjustment. I then set the wing aside to dry.

Here are pics of what we have done so far:

We have about an hour into it at this point. Up next, fuselage!

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RE: Alpha 60 RTF - 8/23/2007 3:11:35 AM   
jagnweiner



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Sorry for the multiple picture posts.

Fuselage work began with the heat gun again. Things were pretty wrinkly on the fuse as well. The next step is to install the main gear. The wheels and nose gear are pre-installed, so installation involves screwing in two screws to blind nuts in the fuse. Now it can stand on its wheels! Tail surfaces are next.

The tail surfaces didn't have as many wrinkles, but there were some dents in the balsa. The dents did not seem to come from shipment. They appeared to have been there when it was packed. Shrinking the covering covered the dents pretty well. The vertical fin has two small bolts protruding from the bottom. The horizontal stabilizer is attached to the bolts with wingnuts and thread lock. The whole assembly is then attached to the fuse with two screws.

Herein lies another slight glitch. The manual states that two phillips screws are provided and that you should use a magnetic screwdriver to get them up through the fuselage to the holes. Instead of phillips screws, however, socket head screws are provided. It took a while to confirm this, and it could be confusing to a beginner. The socket head screws are easier to install. The control horns are attached to the pushrods and we are done with this step.

The final step is to install the three-blade prop and spinner. Now its done! By this point, the batteries have charged up enough to at least check out servo operation. Everything works well. Here's more pics:

Next up, ignition!

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RE: Alpha 60 RTF - 8/23/2007 3:15:10 AM   
Shortymet55



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The wrinkles were amazing in mine too. But i dont have a covering iron or heat gun, so I did my best with a hair drier and clothes iron. Basically is did nothing, but my plane still flies good.

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RE: Alpha 60 RTF - 8/23/2007 3:16:24 AM   
Insanemoondoggie


 

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Looking good Scott. Whens the maiden?

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RE: Alpha 60 RTF - 8/23/2007 3:35:43 AM   
jagnweiner



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quote:

ORIGINAL: Insanemoondoggie

Looking good Scott. Whens the maiden?


Maiden will likely be Friday afternoon/evening. I have a prior engagement tomorrow and the weather is looking crappy anyway.

I couldn't, however, resist taking it out and firing it up. I fueled it up. Not sure how big the tank is, but it seemed to take a lot of fuel. Primed it, put the glow on and hit it with the starter. It fired right up. I leaned out the high end to close to the max on the limiter. It seems pretty good. I'm very impressed with the way it runs so far. The flywheel helps it idle nice and slow. We'll see how it performs with the three blade prop.

I taxied it around the cul-de-sac a little bit and immediately noticed that the nose wheel was way out of line to the right when the rudder was centered. Easily solved by adjusting the pushrod at the servo.

That's it for now. BTW, total assembly time was around 2 1/2 hours. Of that, probably an hour was spent on the covering. If you didn't mess with the covering and you didn't epoxy the wings together, you could do it in about an hour.

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RE: Alpha 60 RTF - 8/23/2007 1:21:55 PM   
hogflyer



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The Alpha 60 I just assembled had the same issues with the wrinkled covering. I also found a couple of stripes that where not stuck down very good. I think they use a very low temp iron to apply the covering - when I removed the covering from the top of the wing for a repair I found it had not stuck down well and came up with no effort. I went over the whole plane making sure I ironed all the stripes down as well as possible except over the decals which I was afraid of ruining.

Hoglfyer

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RE: Alpha 60 RTF - 8/23/2007 2:22:08 PM   
jagnweiner



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The loose covering would not be a big issue for an experienced modeler, but could be daunting for a beginner. As Shortymet says, it doesn't have much effect on the way it flies, but it could cause covering to prematurely pull loose and lead to fuel damaged wood.


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RE: Alpha 60 RTF - 8/26/2007 1:46:24 AM   
hogflyer



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Did you fly it yet?

Hogflyer

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RE: Alpha 60 RTF - 8/26/2007 8:38:27 PM   
Minnreefer


 

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quote:

ORIGINAL: hogflyer

Did you fly it yet?

Hogflyer

I saw im doing some training flying on it yesterday, our club had a big 50 year anniversary this year and he was doing some buddy box time with it.

I will let him tell how it flew.

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RE: Alpha 60 RTF - 8/27/2007 2:17:26 PM   
jagnweiner



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quote:

ORIGINAL: Minnreefer


quote:

ORIGINAL: hogflyer

Did you fly it yet?

Hogflyer

I saw im doing some training flying on it yesterday, our club had a big 50 year anniversary this year and he was doing some buddy box time with it.

I will let him tell how it flew.


That's very diplomatic, Jon (Minnreefer). More on that later.

I had written a detailed flight report Friday night, but lost it with a computer glitch. Oh well. Here's a revised version.

Took Friday afternoon off work and headed out to the field with my father-in-law. I got everything set up and checked out. Did a range check, which went fine. Fueled it up and started it up for the first flight. The engine was running pretty well, although it stumbled a bit in transition. It was very flyable, so I decided to get a few flights in before any fine tuning. Taxied out to the runway and took a deep breath.

I had already adjusted the nosewheel, so it tracked straight down the runway. Because I advanced the throttle very slowly, I used the whole runway. It lifted off nicely and I was immediately struck by two things: 1) It was trimmed almost perfectly straight out of the box and 2) it flew so SLOW, even at full throttle.

I only had to move aileron and elevator one or two clicks to get straight and level flight. It was incredibly stable, even at very slow speeds. And speaking of slow speeds, the three-bladed prop really keeps this thing from building up any speed. I was a skeptic at first, but I think it is a great idea for teaching beginners. The Alpha flew slower, well, than any trainer I have ever flown before. Before landing, I did a few basic trainer aerobatics and it performed them just like a basic trainer. The aileron throws are set pretty low, so rolls were doable, but a challenge. Adding rudder really helps out. Plenty of power for loops, Immelmans, split-s, etc. Inverted is also possible, again, as good as any other basic trainer.

I then landed and hooked up the buddy box. I then had a couple of great training flights with my father-in-law, who had never flown before. He had a blast and did a great job. By the second flight, he was able to take control for at least a few minutes at a time without me having to take over.

I have trained people on my old Kadet Mk II and on Nexstars and I can honestly say this is the best-flying trainer I have used yet. I am finishing up an LT-40 with a student, so that may change after we fly the LT-40, but I was very pleased with the Alpha.

Up next: More flights and . . . disaster!




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RE: Alpha 60 RTF - 8/27/2007 3:01:53 PM   
jagnweiner



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The saga continues . . .

The next day was our annual club open house, in this case our 50th anniversary. In addition to airshow-type demonstrations, we always volunteer to take any visitors up on the buddy box after they practice a little bit on simulators that we have set up.

We got there early and got one more training flight in with my father-in-law. Once the guests arrived, I began giving buddy box flights. I buddy boxed at least a half a dozen people, ranging in age from 7 to 50. Even the 7 year old girl was able to do pretty well. A couple of the guys were able to fly 5 minutes at a time without me taking over on their first flights ever! Again, this is a great trainer for an absolute beginner. I think we got a few guys hooked.

Then, catastrophe. I was going to start another buddy box flight. I had my card on Ch. 41 on the frequency board. Turned the radio on, briefed the student and started it up. Took the plane out to the runway, and then waited a little bit because there were some other people landing. Another club member doing buddy box flights had just crashed and was headed of to the woods on the north side of the field, but I didn't think much about that as he was well away from the runway. I took off to the west, gained altitude and turned around to fly back east across the field. I was just about to give control to the student when the plane suddenly nosed forward and went straight in from about 100 feet up, leaving me staring in disbelief.

I went out to pick up the wreckage and couldn't figure out what had happened. Had I left my antenna down? Was there a clevis failure on the elevator (no)?

About 1/2 hour later, I found out what happened. The other club member giving the training flights had his card on 37. After his crash, he discovered that the buddy box he was using (without a crystal or antenna) was labeled 37, but his master transmiter was on 41. So when I turned mine on, I unknowingly shot him down. He still had his transmitter on when he went to get his plane, and shot me down. He is a good friend of mine and felt terrible about the new mistake. He immediately offered to replace the plane.

Because my father-in-law was just visiting for a short time, I wanted to send him back with a functioning plane. I called my LHS from the field and had them hold another Alpha 60 for me. We assembled it that night (did not have the same wrinkling problem and actually ran better) and flew it yesterday morning. Like the first, it flew great.


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WACO Brotherhood #61

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RE: Alpha 60 RTF - 8/27/2007 3:40:22 PM   
Insanemoondoggie


 

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Ouch! That's to bad Scott , And your right , all you can do is stare at it as it goes in. Sounds like you have a good friend, willing to own his mistakes. And you not wondering what happened.
You`ll find the LT-40 a good trainer. I`ve had a ST GS40 , Evo .46 and a Mangum .52 4c on mine. It flies the best with the Magnum , but the GS.40 pulled it nicely also.
Sometimes Murphy shows up in the strange ways.

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RE: Alpha 60 RTF - 8/27/2007 3:45:02 PM