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❑ 

39)  Set  your  engine  in  place  on  the  beams  of  the  engine

mounts.  Slide the engine forward or aft on the engine mounts until
the front of the engine's thrust washer is 5-1/4" from the front of
the firewall.  Double check to make sure that the engine is pointing
exactly straight forward, and then mark the locations of the engine
mounting holes onto the beams of the engine mounts, using a
center punch or sharpened nail.

❑ 

40) Now set your engine aside and unbolt the engine mounts

from the firewall.  Drill clearance holes for your engine mounting
bolts all the way thru the engine mount beams at the four locations
you marked in the previous step.  TIP: Secure the engine mounts
in a vise while you drill the holes.  If at all possible use a drill press
instead of a hand drill - the job will be much easier and the holes
will be straighter.

IMPORTANT: DO NOT USE ANY TYPE OF SCREW TO MOUNT
YOUR ENGINE TO THESE MOUNTS.  ALSO, DO NOT DRILL
AND TAP THESE ENGINE MOUNTS FOR BOLTS!

Doing so

may weaken them and cause failure.  Mount your engine to these
mounts with steel bolts with flat metal washers and nylon insert
lock  nuts.    Drill  clearance  size  holes  for  the  bolts  completely
through the mount beams.  The mounting bolts should go through
the holes without binding.

NOTE: Bolts are not provided for mounting your engine because
not all engines suitable for the T-CLIPS use the same diameter
bolts.  Many will use 6-32 size bolts, while some may use a larger
diameter bolt.  It is up to you to acquire the correct size Bolts(4),

Flat Metal Washers)4), and Lock Nuts(4) to fit your engine.  For
6-32 mounting bolts the correct clearance hole would be a 5/32"
dia. drill bit.

❑ 

41) Next assemble the Fuel Tank.

    a) Locate the Rubber Stopper Assembly.  There are three nylon

tubes going through the rubber stopper.  Orient the stopper so
that one of the tubes is towards the top and then bend that tube
up at a 45-degree angle.  Do not apply heat to the tube - it will
bend without heat.  Just overbend it to nearly 90-degrees and then
let it relax, to see where it will end up.  Repeat if necessary until
the tube will stay at 45-degrees.

    b) Attach the metal Fuel Pick-Up Weight on one end of the sil-

icone Fuel Line Tubing that goes inside the tank.  Cut the other
end of the fuel line tubing to a length that will allow the clunk to
reach the back of the tank, without getting stuck on the walls of
the tank.  Test fit in the tank and adjust as necessary.  With the
stopper assembly in place, the fuel clunk should sit just in front of
the rear of the tank and move freely inside the tank.  If not pull the
assembly  back  out  and  trim  the  tubing  back  until  the  stopper
moves freely. The top of the vent tube should rest just below the
top of the tank. It should not touch the top of the tank.

    c) Once you are satisfied with the fit of both the fuel clunk line

and the vent line you can tighten the machine screw to expand
the rubber stopper and seal the stopper in the tank.  Do not over
tighten the screw as it can cause the tank to split.  Attach three 6-
inch lengths of silicone fuel tubing (not furnished) to the tank and
label them appropriately as FILL, CARB, and VENT so you can
identify them after the tank is installed in the airplane.

❑ 

42)  Install the fuel tank in the fuselage.

    a) First glue the plywood fuel tank front mount in the notches

in the fuselage floor.

    b) Slip the fuel tank in place, poking the neck of the tank into

the plywood front support.

13

Summary of Contents for T-Clips 70

Page 1: ... oz sq ft 57 64 g dm2 Radio Required 4 Channel with 5 Standard Servos glow 4 Channel with 4 Standard Servos electric Glow Power 2 Stroke 53 61 cu in 8 6 10 0 cc 4 Stroke 53 65 cu in 8 5 10 7 cc Electric Power 1200 1700 watt Brushless Motor 300 400 kv 75A Speed Control ESC 4S 6S 4000 5000 mah Lipo Battery Pack SIG MFG CO INC PO Box 520 Montezuma IA 50171 0520 www sigmfg com ...

Page 2: ...OKE 53 to 61 cu in 4 STROKE 53 to 65 cu in Whatever brand engine you choose take the time to carefully break it in according to the manufacturer s instructions A good running reliable engine is a minimum requirement for the enjoy ment of this or any R C model aircraft PROPELLER FOR GLOW Refer to the engine manufacturer s instructions for recommenda tions on proper propeller size for their engine I...

Page 3: ...ge cycle This translates to better flight times and a longer life from the battery pack REQUIRED TOOLS For proper assembly we suggest you have the following tools and materials available A selection of glues SIG Thin Medium Thick CA Glue CA Accelerator CA Debonder SIG Kwik Set 5 Minute Epoxy Screwdriver Assortment Pliers Needle Nose Flat Nose Diagonal Wire Cutters Small Allen Wrench Assortment Pin...

Page 4: ...r Set your iron to a medium setting Glide the iron over some of the covering that is over solid wood such as the sheeted wing center section Observe the covering to see if any bubbles appear If bubbles appear the covering is getting too hot Turn down the temperature of the iron and repeat the test If no bubbles appear turn up the heat slightly and repeat the test Keep adjusting until you zero in o...

Page 5: ... get it to fall through the openings in the ribs until it emerges at the end rib Once you ve got the plug to the end rib direct it through the round hole in the bottom surface of the wing panel By that time the servo itself should be next to the servo mount cutout and ready for mounting f Fit the servo into the servo mount in the wing panel note that the servo is positioned so that the servo arm i...

Page 6: ...uel Tubing onto the small end of the Metal R C Clevis Screw the Hex Nut on the Aileron Pushrod Wire all the way up to the end of the threads Then screw the metal clevis halfway onto the threaded end of the Aileron Pushrod Wire b Clip the metal clevis into the last hole in the nylon control horn Lay the other end of the pushrod wire over the outer hole in the servo arm Use a felt tip pen to mark th...

Page 7: ...th an 11 64 or 17 drill bit 8 Slide a second Wheel Collar onto the axle and up to the wheel Leave a small gap between it and the wheel so the wheel will turn freely and then tighten the wheel collar set screw 9 Check the orientation of the landing gear to make sure you know which way is forward The two outer holes for mounting the gear to the fuselage go to the front Test fit the wheel pants over ...

Page 8: ...fuselage and stabilizer Check to see that the fin sits flush and perpendicular to the stabilizer 16 Glue the fin in place using slow drying epoxy glue Apply a thin coat of glue to the bottom of the fin and to the exposed wood on the stab With the fin in place sight the model from the front to make sure the fin is absolutely 90 degrees upright to the stab If needed use a little masking tape to hold...

Page 9: ...o the exit hole and inside the pushrod sleeve built into the fuselage Slide it in until you can clip the clevis into the middle hole of the control horn Lock the elevator in neutral position with tape or with two small balsa wood sticks held together with small rubber bands c Inside the fuselage hold the pushrod wire over the elevator servo output arm and mark the wire where it crosses over the ou...

Page 10: ...front of the firewall from the back edge of the plywood motor mount box With the motor we are using in these photos the motor measurement is 3 21 So 5 25 minus 3 21 2 04 Your result may be different depending on your motor b Carefully measure and mark the distance determined in the previous step from the back edge of the motor mount box towards the front Do this along side each of the adjustment s...

Page 11: ...he top and sides together securely b Take one of the supplied Velcro straps and pull the short fuzzy portion loose from the longer hook strap Glue one end of the short fuzzy strap on to one of the box sides as shown in the following photo Glue the plain side to the wood not the fuzzy side Epoxy glue works best for this step c Cut the hook strap in half and then glue one end of it to the other box ...

Page 12: ...f the cowling so that more cool air can come in This positive air flow keeps your motor running cool We rec ommend that you make a simple opening at the bottom rear edge of the cowling as shown in the next photo to provide additional air exit area The exact dimensions are not critical Note A Dremel Tool or similar rotary hand tool with an assort ment of bits is without a doubt the best tool to use...

Page 13: ...learance hole would be a 5 32 dia drill bit 41 Next assemble the Fuel Tank a Locate the Rubber Stopper Assembly There are three nylon tubes going through the rubber stopper Orient the stopper so that one of the tubes is towards the top and then bend that tube up at a 45 degree angle Do not apply heat to the tube it will bend without heat Just overbend it to nearly 90 degrees and then let it relax ...

Page 14: ... it much easier to tighten the hex nuts When fin ished install the throttle servo arm back onto the servo 45 Install the throttle pushrod a Start by test fitting the throttle pushrod wire in the airplane sliding the plain end of the wire in from the front Steer the pushrod through the hole you drilled in the firewall then through the hole in the rear tank mount and then back to the pushrod con nec...

Page 15: ...6 type glue Do not use thin CA glue because it can cloud the plastic Apply a thin bead of glue around the edge of the window and press the window in place from the inside of the fuselage Don t use too much glue or it may ooze out onto the outside surface of the window Use a few small pieces of low tack tape to hold the window in place until the glue dries CONGRATULATIONS Your T CLIPS 70 is complet...

Page 16: ...ructions to ground test the finished model before each flight to make sure it is com pletely airworthy and to always fly your model in a safe location and in a safe manner The first test flights should only be made by an experienced R C flyer familiar with high performance R C aircraft JOIN THE AMA The governing body for radio control model airplanes in the United States is the ACADEMY OF MODEL AE...

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