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A plane's weight determines how much power it needs. If your ship is huskier than average, it may not climb, even when fully 
wound. In that case, add one strand (not a complete loop) of 1/8" Sig rubber to the motor. Tie an eye (like a slip knot) in each 
end. This will provide the extra horse power needed for higher climb.
 
Whenever you add rubber, re-balance your model as outlined in the pre-flight instructions. Additional rubber tends to make a 
plane tail heavy.
 

Take-Offs

 
When your Classic has been adjusted according to instructions, it should have no trouble taking off by itself from a smooth 
surface. No adjustment changes should be necessary. You may find that take-offs are better if you release the ship pointed at a 
slight angle to the wind instead of headed straight into it. Experiment to find the best system.
 

Rubber Motor Hints

 
The rubber motor in your Classic kit will safely give you a whole season of flying if you stick to the chart. "Hand Wound" means 
winding the propeller with your finger while the rubber is inside of the fuselage. "Stretch winding" is a more complicated two-
man operation, but gives longer flights.
 
Before a motor can be safely stretch wound, it must be lubricated. Rub a few drops of Sig Rubber lubricant into the rubber 
(AFTER the knot has been securely tied). Use just enough to make the motor barely damp. If it's too juicy, it will splatter all over 
the inside of the fuselage. Next, make a strong wire hook, like a teacup hook, and lock it VERY TIGHTLY in the chuck of a hand 
drill.
 
Then, while your helper holds the model by the rear rubber peg and the 
cowling, stretch the motor out the front of the model to about twice its 
normal length, unhook the propeller, hook up the winder, and wind while 
slowly walking back toward the plane. 
 
All the models in Sig's Classic series have been carefully designed and 
flight tested to assure flying ability. Hand wound, you can expect flights of 
10 to 25 seconds and stretch wound, 20 to 50 seconds. Like model 
builders, some of the designs have more ability than others, but all are 
proven dependable flyers. 
 
A Classic flying model is not a ready-to-fly toy. Your skill in building and 
flying DOES make a difference. So whether your flights are short or long, 
you can be proud of completing a job which was successful because of 
your own effort and ability.

 

Good Flying!

 

Summary of Contents for Customaire SIGFF26 Classic Series

Page 1: ...mall scissors are the best tool for cutting out plastic parts While cutting hold parts so that the trim line can be seen clearly Double check with the instructions to BE SURE YOU ARE CUTTING ON THE RIGHT LINE The edges of the shells and the back surface of the completed cowling assembly can be finished flat and accurate to the desired line by rubbing them across a sandpaper block Go slowly and car...

Page 2: ...essary to prevent wobble Cowling Assembly There is no trim line on the cowling and dummy motor Just cut from the sheet leaving a small rim around the edge like the brim of a hat Carefully trim the round center disc from the dummy motor Remove the small lip at the trim line leaving the center ring smooth and flat Apply cement to one surface of each N 2 and place one inside and one outside the cowli...

Page 3: ...y 7 shock strut strips from typewriter paper Also cut two 1 1 2 squares from wax paper Wrap a lower strut in wax paper and then wrap a paper strip snugly around the outside thoroughly cementing the layers of paper together as you wrap When cement has started to set up the wax paper will allow the shock strut to be slipped off the form Discard the wax paper When shock struts have dried completely t...

Page 4: ...same Covering Cover all parts before final assembly Windshield must be added after the upper wing is in place Do not shrink or dope the wing or tail unless they are pinned down on a flat surface while drying Use Sig Lite Coat Dope only WING SURFACES MUST BE FREE OF WARPS OR THEY WILL NOT FIT PROPERLY IN FINAL ASSEMBLY Final Assembly Don t try to cement parts to the paper covering Wherever parts ar...

Page 5: ... trailing edges butt against the ends of the cross pieces S Insert the bottom tabs of the N struts into the slot between the double ribs in the lower wings The struts should fit against the ribs without distortion Struts can be moved forward or backward slightly in the slots or sprung a little for improved fit If wings are well aligned and struts still will not fit the struts will have to be trimm...

Page 6: ...enter line of the fuselage as shown in the drawing Right and left wing should look alike you shouldn t see the top of one wing and the bottom of the other The fin should point straight ahead and the stabilizer should be flat This does not mean that the stabilizer and the wing sit on the fuselage at the same angle The wing will be tilted upward more than the tail A model can be made to fly with twi...

Page 7: ... angle of the stabilizer by changing the thickness of the incidence block under it Lower the front edge or raise the rear edge See drawing But make SMALL changes 1 32 at a time If a change of more than 1 16 is needed go back and perform the Preflight checks again It s likely your Classic is incorrectly balanced tail heavy or the surfaces are warped Diving A model that darts quickly into the ground...

Page 8: ...of the shim behind the noseblock until power flights are smooth and free of stalling with 150 winds in the motor Don t wind the motor any tighter until the lower powered flights are under control Power On Turns Because of the effects of the rotating propeller models usually turn better in one direction than the other Your plans will say which way to circle Don t circle any tighter than necessary C...

Page 9: ... a more complicated two man operation but gives longer flights Before a motor can be safely stretch wound it must be lubricated Rub a few drops of Sig Rubber lubricant into the rubber AFTER the knot has been securely tied Use just enough to make the motor barely damp If it s too juicy it will splatter all over the inside of the fuselage Next make a strong wire hook like a teacup hook and lock it V...

Page 10: ...technical support 1 641 623 0215 SIG WEB SITE www sigmfg com Copyright SIG Mfg Co Inc SIG MFG CO INC Montezuma Iowa 50171 0520 LIMIT OF LIABILITY The craftsmanship attention to detail and actions of the builder flyer of this model airplane kit will ultimately determine the airworthiness flight performance and safety of the finished model SIG MFG CO s obligation shall be to replace those parts of t...

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