Fancherized Twister (oz8708)


Fancherized Twister (oz8708) by Ted Fancher 1986 - plan thumbnail

About this Plan

Fancherized Sig Twister. Control line stunt model. Kitbash of the Sig CL-22 Twister. 490sq in for 25-40 engines. Drawn by Bob Kruger 14 Jun 2002. Last revision 2 Jul 2005.

Quote: "HI, GROUP! Probably the most consistent complaint I receive on by monthly musings is that the material I cover is too 'high-tech.' While I don't feel that the CL Stunt column should be considered a beginner's forum, there is nonetheless a lot of merit to those complaints.

In response, I have undertaken a project which I at first thought would be a pain in the neck but which has proven to be both enjoyable and educational. I built me a Sig Twister!

Most of this and the next two columns will be a fairly detailed coverage of my experiences dealing with Stunt from the viewpoint of a beginner. Using only commercially available supplies and trying to limit a nearly uncontrollable urge to 'make things better,' I'm going to build, finish, and flight-trim a profile Stunter appropriate for anyone from a beginning pilot (not a rank novice) to an Intermediate or new Advanced flier.

If I've had any luck et all with the Instamatic, several pictures should accompany the columns. These will help illustrate some of the techniques and features. Let's get the hardware out of the way first. I chose the Sig Twister, kindly donated by Mike Pratt and Sig. I used both a Merco .35 engine from Tom Dixon and a box-stock OS .40FP, and I used a Taffinder four-ounce profile tank, modified for uniflo.

The hardware package included with the kit was used with the exception of the bellcrank, for which I substituted a Fancher Circular Crank to which I am partial. (There is no significant value in doing so at the beginner level, and I don't necessarily recommend it. I wasn't even going to mention it except that my fancy ballcrank caused some problems in the initial test flights, and I didn't want you to think it was the fault of the perfectly adequate Sig bellcrank. More on that later..."

Note this is a modern CAD-drawn plan in PDFvector format.

The design first appeared in Model Aviation 1986.

Supplementary file notes

Planfile includes article pages.


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Fancherized Twister (oz8708) by Ted Fancher 1986 - model pic


Fancherized Twister (oz8708) by Ted Fancher 1986 - pic 003.jpg
Fancherized Twister (oz8708) by Ted Fancher 1986 - pic 004.jpg
Fancherized Twister (oz8708) by Ted Fancher 1986 - pic 005.jpg
Fancherized Twister (oz8708) by Ted Fancher 1986 - pic 006.jpg

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User comments

Hello, Here are a few pictures of my latest build based on an Outerzone plan. For my practice plane I decided to build me a Twister based on the Fancherized Twister [main pic, 003-005]. I found the plan on Outerzone (oz8708) and gave it a go. Profiles are quicker to build and less heart breaking to lose in a crash than a full fuselage model. This one is based on the Fancherized Twister with a couple of additions to the mod list. It still has the longer fuselage, adjustable leadouts, tip weight box and larger tail surfaces but also has an I-beam wing and has been modified for electric power. The wood available these days is not the lightest so I also made a lightening hole in the aft section of the fuselage to remove some of the rock hard balsa plank used. Hopefully it came out stiff enough and light enough to perform well. Also the tail wheel strut is removable, so a shorter version can be used on grass and a longer version on pavement. Perhaps the short tail wheel strut will make grass takeoffs and landings a bit more reliable.
The dry fit came in at 37.9 ounces (battery included) before covering. One thing that struck me in this build - it is the first electric conversion I have done that came out tail heavy! Typically they come out a bit nose heavy due to the battery weight. I used Fancher's Imitation (oz8495) as inspiration for a motor spacer to get the CG moved forward using the motor weight to adjust the balance without adding nose weight.
The covering is all Monokote including the hand cut decals. After all was said and done, the final takeoff weight came out to 41.25 ounces, so it gained about 3 ounces from the covering. Fancher had his range listed as 35 ~ 40 ounces but I assume that is dry - no fuel load, so maybe not too bad.
Thanks for providing such a useful site for us model builders!
Don Barrett - 06/07/2022
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