Berliner (oz15221)

About this Plan

Berliner. Radio control sport model. Wingspan 220 cm.

Direct submission to Outerzone.

Update 14/4/2024: Added article, thanks to Miguel.

Quote: "A Teddybear-Transporter in a classic design. Construction: Ole Steen Hansen. Editing of the construction instructions: Christian Färber.

Berliner was created in 1990 as the bigger brother of the Leipziger (oz8767) model, which had good flight characteristics thanks to its low weight of 850 g and a wingspan of 132 cm.

Berliner should now also have the same good properties; I mainly built the model for a different reason: I have a lot to do with children, I have a small son myself, and I always had to realize that the little ones make sure that the little ones have their favorite things at all times in a slow and low traffic pattern.

And actually, the children get really nervous when the little bears "get on the plane" and are strapped in, they start screaming when the plane does a loop, and how proud, relieved and overjoyed they are when they reach for safety Landing your favorites in your arms again.

But Berliner also opens up completely different perspectives; For example, mount a camera in the cabin and you are ready to take the most beautiful aerial photos; or a flap in the cabin floor and it rains the tastiest candies and sweets. No problem for Berliners, there are no limits to your imagination!

But mainly Berliner is a model just for flying around when you have nothing better to do on a cozy Sunday afternoon than watching the pretty model fly in the blue summer sky.

Alright, enough talking! Get ready to inhale the scent of balsa wood, because epoxy resins and fiberglass are not used in construction!

Regarding the construction: Berliner is built using construction techniques that were modern 40 to 60 years ago, and for which no serious disadvantages can be discovered today that would make them appear outdated. The design of the Berliner is very much based on real vintage cars.

Probably the most important feature of such models is that almost exclusively balsa strips and hardly any balsa boards were used in the construction; they consist of a lot of fresh air and a few strips around it, which makes the whole thing very light in relation to its size. Engines in these ancient times were not very powerful and therefore one simply had to build light, robust models.

And these models are indeed robust, the risk of breakage is much lower than with a modern, heavier, seemingly much stronger aircraft! As always, physics has the final say when it comes to flying and even more so when landing! And this physics says that the energy, even the destructive one, depends directly on the moving mass and its speed.

The modern flight models are heavy and fly quickly, and so a model built from Styro-wood-GRP, which is actually very, very solid, can become a stumbling block in the land, which can become fatal with irreparable consequences, while a graceful structure of a classic car that you hardly dare to touch and that can usually survive a nice, skillfully inept 'thump' in one piece. There is a lot of meaning behind these old building techniques..."

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