Mini Speedster plans please.

KariFS wrote:"Cerveja" (on the plastic bag) is Portuguese for beer, so my guess  for the location is either Brazil or Portugal

I did stitched hinges like that once, there is some discussion about it in the end of my "Scorpion" trainer build thread (see page 2):

https://www.coxengineforum.com/t7820-scorpion-simple-trainer-build?highlight=Scorpion

Paulgibeault wrote:Hi guys,

That photo was taken by me at an event in Portugal!  The model belongs to Vintage speed flier Salvi Angeloni of Italy. Among other things Salvi has produced a nice text book on the history of SuperTigre Engines.

What you're looking at is a British Vintage Class I speed model called the "Mini-Speedster". It flies a bit over 80 mph on 35' X .008" lines. Fuel is unlimited.
Vintage speed rules mandate that the engine (up to .051) & design used must have been produced before 1956. The ONLY Cox engine produced that meets the criteria is the Cox Babe Bee .049.  Vintage rules allow interchangeable parts if they screw on & off. In this case only the rule makers have allowed the use of the Cox Black Widow engine as they found there was so little participation in the event as it stood. The arguably best engine to use ( in this Class) is the Holland Hornet .051...but they are rather rare & relatively very expensive. It did win last years British Nats though. A Vintage 100% score in Class I was 80 mph, but now has been bumped up to ~ 85mph.
The original Mini-speedster is a 9" wingspan, but Vintage rules allows for increasing the planform size up to 30%. We've found the larger 12" spam model flies no slower than the original & allows a Black Widow engine to balance easier. Oddly enough both seem to fly at pretty much the same speed...
Salvi & I placed 3rd & 4th at last years British Nats with Cox powered Mini-Speedsters. I used to have more (better) photos until the computer upgrade...  
( my Avatar photo was actually posed with Salvi who was cropped out)

p.s. One "oddball" characteristic of these tiny models is that on takeoff they must not have any up elevator input. Otherwise they will loop end over end. Even some down elevator initially on takeoff is quite desirable!