Katana, Zlin or Stephens Acro plans

[Touch-n-go]

Can anyone please help me with plans for a Katana, Zlin 45/50 or Stephens Acro? Want to scratch build one for scale competitions. My 5 year project...

[BalsaPilot]

What Size (motor) do you want? I can Draw some up for you!!

[Touch-n-go]

hey thanks. was thinking along the lines of a 30% size. know the t30 katana has a wingspan of 7,7m. as long as i can enter scale competitions. wanted to go for a Pitts Special, but maybe later.

[BalsaPilot]

jish ok thats way bigger than what im capapble of, i can go up about 2.5 meter wing span thats it!!!

[mikestark]

Can anyone please help me with plans for a Katana? Want to scratch build one for scale competitions. My 5 year project...

Have you seen pictures of the full-size Katana.

Quite different from the models

If you are still interested I have some 3 views and some pics of the full size, some of which are attached.

BTW I have the Sebart Katana 30, Sebart Katana 50 and the 40% Krill Katana, and they are way prettier than the full size but as a result will not win any scale competitions.

[Touch-n-go]

jish ok thats way bigger than what im capapble of, i can go up about 2.5 meter wing span thats it!!!

30% =2.31m. full size =7.7m

Mike thanks i got the same pics from Pietro Terzi website including a video of maiden flight, thanks again. do you think a scale katana will be difficult to fly?

[Dobo]

A Zlin 50 or a Stephens Acro would be nice subjects for scale competition. They will fly nicely as well. The models of the Katana are so different to the full size, that I can only imagine a direct copy may not perform too well.

I do have a set of 1/4 scale Pitts plans. They will cost you R 2500.00 but I will throw in a brand new Zenoah 20 cc petrol motor with electronic ignition

[Touch-n-go]

I do have a set of 1/4 scale Pitts plans. They will cost you R 2500.00 but I will throw in a brand new Zenoah 20 cc petrol motor with electronic ignition

i do have plans for a Pitts, but thought i would start with something "less" challenging as a first project.

[mikestark]

Agree with Dobo on the Katana issue.

Would also recommend a Zlin as it has classic model lines. Again if you are interested I have a complete set of 3 views in various scales that I could let you have.

Also there are a number of them around for documentation purposes. The quality of the documentation as well as ready access to a full size example always makes the project easier. Choose a particular airframe and use that as your base because when you start looking closely, you cannot believe how different each plane is.

[SYBOT]

A Zlin 50 or a Stephens Acro would be nice subjects for scale competition. They will fly nicely as well. The models of the Katana are so different to the full size, that I can only imagine a direct copy may not perform too well.

I do have a set of 1/4 scale Pitts plans. They will cost you R 2500.00 but I will throw in a brand new Zenoah 20 cc petrol motor with electronic ignition

She looks mean and lean - I think you may experience difficulty in knife edge flight, but looking at extras, yaks and edges - all have +- 10% deviations from the real ones, be it moment arm, deeper fuzz's, control surface size and even putting 34% wings on 33% fuselages. I think this can be built to fly nicely, if 3d is not an issue.

[edge540]

Without having read the entire post, here are some plans.

regards
Andreas

[morneh]

What program do you need to open those plans?

[mikestark]

A Zlin 50 or a Stephens Acro would be nice subjects for scale competition. They will fly nicely as well. The models of the Katana are so different to the full size, that I can only imagine a direct copy may not perform too well.

I do have a set of 1/4 scale Pitts plans. They will cost you R 2500.00 but I will throw in a brand new Zenoah 20 cc petrol motor with electronic ignition

She looks mean and lean - I think you may experience difficulty in knife edge flight, but looking at extras, yaks and edges - all have +- 10% deviations from the real ones, be it moment arm, deeper fuzz's, control surface size and even putting 34% wings on 33% fuselages. I think this can be built to fly nicely, if 3d is not an issue.

Sybot, touch-n-go stated in his original post that he wants the Katana to compete in scale competitions. A 10% deviation as allowed under Large Scale rules is not going to cut it in a scale comp.

It would have to look exactly like the pics

[edge540]

The plans are saved in a DXF format, you would need a DXF viewer or alternatively CAD, to modify the plans.

They are not going to be able to be used in scale comp

regards
Andreas

[morneh]

Can anyone scale those down to a 40 or 60 size?

Where can i get them printed ?