Hip Pocket Logo Hip Pocket Slogan

Forum Promo - Join Today!


 

Free Flight "Indoor"

cl_graphic

Plan Printing by Dave at The Final Image


Imperial Knight Twister
Minimum weight... Maximum Performance

Knight TwisterSomewhere around 1989 I had been reviewing model airplane designs in Model Airplane News Magazine and came across an article that documented the early history of the Knight Twister. Now, not many airplane designs jump out and bite me but this airplane really did. It is a timeless classic airplane design from 1928 and has been developing right up through the years to the present day. A version that was presented in the magazine was the Imperial Knight Twister, an improved version used in air racing. Included in this article was a three view of the Imperial Knight Twister. Further into the magazine was another photo of a 1/3-scale version of this airplane to be published in the October 1985 edition of Model Airplane News. Now at that time I was not interested in building a large version but wanted a model that was more manageable. I was interested in Peanut Scale subjects and I promised myself that this would be a really neat airplane to do. My skills at that time were not strong enough to build from a three view so the idea would end up waiting until at least 1992 before I was able to tackle this sort of project. In 1998 I set about enlarging the three view that I had and finally had much of the basic structure worked out on paper. It would actually be 2002 by the time I finally began to build it. The construction remained straightforward but the cowling area took some extra time to work up.

I wanted to keep things as light as I could so I found a way to make the nose area sheet less. Only the nose block is of significant mass. I still had to add a touch of nose weight. In this version, the stringers go right to the back tail cone.

Knight Twister
Much of the construction in the wings was sliced rib construction and this made very sturdy, light wings. A set of wheel pants rounds out the landing gear and a first generation wood spinner on a plastic prop was entertained.

Knight Twister

This model does fly and reasonably well and I was surprised how stable it was. There is dihedral only in the top wing, but I had to get the incidences correct for biplanes before I was confident that the two wings would work together in a stable fashion. I feel that more pitch on the propeller is required as this red prop spins too fast and the airspeed is slightly slow, even on a length of 1/8th rubber.

I have considered making a set of plans for a peanut version available and if there is interest I will set about the task of making drawings.

A full history of the full size airplane can be found at Steen Aero Lab.


Discussions about all categories of Free Flight models are taking place right now
in our Hip Pocket Aeronautics - Builder's Forum. Join today and start sharing your knowledge
or learn new tips and tricks from other experienced enthusiasts.
This is a great place to start if you're new to the hobby and just as valuable if you've been at it for years.


Site by The Final Image Valid XHTML 1.0 Transitional