PIK-15 HINU "2000+" - Glider Tug

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Seank
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PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Thu Jan 30, 2014 11:40 am

So quite a while back I was looking for a glider tug and stumbled upon this very interesting web site belonging to Tuomas Otala ( oh and this site ). After a few emails to Tuomas he joined avcom, and I said when we get started, I will start a build thread as at the time there was no Prototype flown of the bigger set of plans. So here you go, Tuomas, please feel free to make suggestions and comments.

Anyway, on his website besides some very, very awesome glider plans, there was the in my opinion stunning looking glider Tug plan. I decided I wanted a 2.7m plane because I have a 50cc ZDZ that will fit, and At the Time I didn't want a bigger motor. We now have the choice of a 58cc MVVS too, but the plan at 2.7m will easily take upto a 116cc MVVS with no cutting in the cowl at ALL!!! So if you built the 3000mm wing span then a 150cc would be really easy for those very big gliders. At the time I had the kit cut by Andre @ Lazer4U in George, for very reasonable sum of R1450 including all CAD design and wood. I supplied the vectored plans, Andre did his magic and I waited...
I decided I wanted a 3 piece wing and the easiest way was / is to do it in foam. So another very good friend of MAD and mine CNC cut the foam core in 4 pieces. This will later be joined at the center make the three pieces. At the time I also said I was not sure if I wanted to make a three piece foam stab or Not, I have subsequently decided for weight reasons I will make the tail from Balsa.

The Full size construction can be see here. This is the machine here

I will keep this post updated at time goes by till we get it completed
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Last edited by Seank on Wed Mar 26, 2014 10:58 am, edited 3 times in total.
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Thu Jan 30, 2014 12:07 pm

MAD please post the pictures you took the other night.

The wings are really wide, so after about 2 hours of joining planks, I had 4 sets of wing skins. We used PU Glue (akin to Gorilla glue) to glue the skins to the Foam, being a nice humid evening everything went perfect and super fast, here are the results. A total of 32 sheets where used to sheet the wings, this weekend I will see if I can quickly make see wings joiner tubes, and some under carriage mounting Blocks.
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by tuootal » Thu Jan 30, 2014 8:44 pm

Hi Sean,

this is so interesting. I am aware of quite many 3m projects progressing but none has seen air yet. Have to wait till next summer, it is extremely cold here. Also, there are 2 other 2.7m-versions which I have been told are progressing. Have not seen them.

It is extremely fascinating to see your way of working. I will follow this closely and try to learn something. I guess the first thing is to surprise me is to use styrofoam core wings. As the wings are quite large it will be interesting to see how they perform. So far it looks fantastic.

Tuomas
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Tue Feb 04, 2014 11:56 am

So last night was not as productive as one would want due to outside factors. But we did make progress, as can be seen in the attached images. I haven't taken photos yet of the wing joiners, although I have completed 50% of them, I will post images of this process too. I documented the method I use for making wing Joiners here, so I will not repeat the process. On this wing, I am making two joiners per wing a 22mm and a 18mm I think it is. I will measure and confirm this.

We also cleaned up the wings and sanded in the Dihedral, Tuomas, I assume the 106mm is per wing tip / side.
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Next steps will be to make the Servo cut outs, Dihedral braces, Flap cut outs this will be done with a router. Simply because it's faster (not cleaner)
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Vesparado » Tue Feb 04, 2014 1:38 pm

Seank wrote:So last night was not as productive as one would want due to outside factors. But we did make progress, as can be seen in the attached images. I haven't taken photos yet of the wing joiners, although I have completed 50% of them, I will post images of this process too. I documented the method I use for making wing Joiners here, so I will not repeat the process. On this wing, I am making two joiners per wing a 22mm and a 18mm I think it is. I will measure and confirm this.

We also cleaned up the wings and sanded in the Dihedral, Tuomas, I assume the 106mm is per wing tip / side.
Capture3.JPG
Capture2.JPG
Next steps will be to make the Servo cut outs, Dihedral braces, Flap cut outs this will be done with a router. Simply because it's faster (not cleaner)

Brilliant photography! :D
I say,Fly It like you stole it!
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Tue Feb 04, 2014 1:56 pm

Vesparado wrote:Brilliant photography! :D
yeah, the other 15 photo's sucked!! :lol: :lol: :lol:
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Vesparado » Tue Feb 04, 2014 2:27 pm

Seank wrote:
Vesparado wrote:Brilliant photography! :D
yeah, the other 15 photo's sucked!! :lol: :lol: :lol:

Myself and SYD told you they were better when you kept your shirt on :lol:

Ves :mrgreen:

By the by......these wings are incredibly light for their size,......would be interesting to know the exact weight!
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by tuootal » Sat Feb 08, 2014 12:15 am

Seank wrote:..
We also cleaned up the wings and sanded in the Dihedral, Tuomas, I assume the 106mm is per wing tip / side.
..
Looking great. And the speed of building is quite fast. The dihedral is not 106mm. Original 3m version had dihedral of 106mm so this 2.7m version should have 94mm on each tip. I guess that nobody will notice any diff as it is only 12mm per side and this is rather large plane.

Tuomas
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Mon Feb 10, 2014 11:48 am

MAD and I got together Friday evening because his missus had a friend over and mine wanted to sleep, so we decided to get together to build something. Problem was I brought irrelevant stuff and we need that for the P-40, but what I did bring provided great entertainment till 02H00 the next morning!!!

firstly what I must say before you look at how we built it. This plane is supposed to be built using the keel construction method, popularised by Scale Glider builders as this allows you to sheet it on the board. While dry fitting the puzzle together ( without looking at the plane, which was immense fun), we decided "Ahhhhh, lets just glue it". So we did. 2 hours later we had this. really easy to build perfectly straight and almost instant gratification. Don't worry, the fuselage will be straight this evening after we add the stringers (which we will scale down too)

Last night (Sunday) I quickly laminated the firewall and the landing gear black together with some carbon fibre, the main reason being we might just add, a 120cc engine to the plane.
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Mon Feb 10, 2014 11:51 am

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So a few things came out after this, it that I had the plans originally printed for 2720mm, based on the fact that the 1500mm is a one piece bolt on wing I assumed the same here (never assume). Then once the fuz was together it turns out that the plan is actually a little bigger then anticipated, and with the curving up wing tips will be 3100mm. I will have to re-think the way I had in mind of doing the wings. Either way it will plug in and the plan will be able to stand on it's wheels one disassembled.
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Mon Feb 10, 2014 12:02 pm

Those formers are pressed between two plates of 8mm glass to keep them flat
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by SteveJay » Mon Feb 10, 2014 1:17 pm

No iced water - Iced coffee? Tab?
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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Tue Feb 18, 2014 3:13 pm

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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by Seank » Tue Feb 18, 2014 3:15 pm

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Re: PIK-15 HINU "2000+" - Glider Tug

Unread post by cabeng » Tue Feb 18, 2014 3:21 pm

Can NEVER be too BEEEEG :roll: , Nice bild so far =D>
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