Top Flite B-25J Mitchell Скачать руководство пользователя страница 22

Страница: 22 / 52

w it’

s time to fi

naliz

e the engine cutout and

make the cutout f

or the m

ffl

❏

21.

Mount the m

ffl

er to the engine

. Repeat

the cut-and-fi

t procedure to cut out the co

wl f

r the

ffl

. Proceed slo

, cutting a

little at a time

and

test fi

tting the co

wl often as y

ou proceed.

❏

22.

w that the co

wl has been rough-cut to

t around the engine and m

ffl

, use a rotar

tool

with a sanding dr

um to mak

e an

y fi

nal cuts so there

will be adequate clear

ance around the engine and

ffl

er and so the cutouts look good with smooth

lines

, str

ight edges and nicely-rounded cor

ners

. Y

can also mak

e additional cutouts f

r cooling air where

necessar

Final-sand all the openings with 320-g

rit

or 400-g

rit sandpaper

❏

23.

Cut an

y other holes necessar

y f

r the needle

, lo

w-speed needle adjustment scre

, glo

plug

igniter

, fuel fi

lling,

etc.

❏

24.

duplicate the fueling system sho

wn in this

man

ual, mak

e a

fuel line mount

r the fuel fi

lling

line

from a balsa b

loc

k (not supplied) and a 9/32" [7mm]

. K+S br

ass tube

. Shar

pen the end of the tube

and then use it to cut a hole through the balsa b

loc

Round the top of the b

loc

k to fi

t the inside of the co

wl.

Glue a 1/4" [6mm] piece of the br

ass tube into the

balsa b

loc

k so it stic

ks out the rounded side of the

loc

k 1/32" [.5mm].

❏

25.

Cut a 9/32" [7mm] hole in the co

wl where y

nt the fueling line to come out.

Use epo

xy mix

with microballoons to glue the b

loc

k into position.

❏

26.

Connect 8" [200mm] of silicone fuel tubing

(not included) to the fi

ll line coming from the fuel tank.

When mounting the co

wl later

, guide the fi

lling

line

through the br

ass tube in the co

wl.

After fueling the

model at the fi

eld, close the line with an alumin

fuel line plug.

Then, push the line bac

k into the tube

❏

27.

Mount the r

ight co

wl the same w

MOUNT THE

REPLICA

ENGINE

❏

Sand all the w

y around the edge of one of the

replica engines so glue will adhere

. Sand the inside of

the co

wl where the engine will be glued as w

ll.

❏

Use cur

d-tip plastic-cutting scissors or y

our

rotar

tool to cut out tw

o cylinders of the replica engine

❏

Carefully twist a hob

knif

into the plastic

making small holes f

r the wire replica pushrods

. Fit

Содержание B-25J Mitchell

Страница 1: ...unused condition to the place of purchase To make a warranty claim send the defective part or item to Hobby Services at the address Include a letter stating your name return shipping address as much contact information as possible daytime telephone number fax number e mail address a detailed description of the problem and a photocopy of the purchase receipt Upon receipt of the package the problem ...

Страница 2: ...e level of detail and the number of scale features included with this model And we ve done our best to balance the level of authenticity and detail with the requirements for simplicity that an ARF modeler expects For example the main landing gear doors on the full size B 25 close both after the gear has retracted and after it has extended look at photos of a B 25 sitting on the tarmac notice that ...

Страница 3: ...ure Aircraft Association events The IMAA is an organization that promotes non competitive fl ying of giant scale model aircraft If you plan on attending an IMAA event refer to the IMAA Safety Code at www fl y imaa org under the Sanctions heading in their site index IMAA contact information is also available in Model Aviation the monthly newsletter magazine from the AMA The IMAA can also be contact...

Страница 4: ...alve T fi ttings ROBQ2305 190 Air Line Quick Disconnects ROBQ2395 Standard size servo to operate air control valve Additionally a hobby can of compressed air such as Hobbico Duster HCAR5500 will be helpful for cycling the retracts during assembly and setup without having to connect the gear to the air control valve fi ller and air tank before it is ready An air pump will also be required for fi ll...

Страница 5: ... 32 2 4mm 7 64 2 8mm 1 8 3 2mm 5 32 4mm 29 Drill and 4 40 Tap or Great Planes 4 40 Tap and Drill Set GPMR8101 Tap handle GPMR8120 Soldering Iron or Hobby Heat Micro Torch II HCAR0755 Silver Solder w Flux GPMR8070 Denatured Alcohol for Epoxy Cleanup Plastic Compatible Oil for Hinge Pins Rotary Tool and Cutting Bits See Page 20 Rotary Tool Reinforced Cut Off Wheel GPMR8200 Fine point felt tip pen To...

Страница 6: ...6 4 38 37 5 33 34 35 11 32 2 6 3 36 8 31 7 10 9 25 20 29 19 17 21 22 23 15 14 1 18 27 28 24 26 25 9 10 7 31 2 6 3 36 8 35 34 33 5 11 13 12 32 16 30 ...

Страница 7: ...l cooler air scoops 32 R L waist gun windows 33 Molded plastic fi xed main landing gear blocks 34 R L main landing gear wires 35 2 3 7 8 98mm main wheels 36 2 420cc Fuel tanks w hardware 37 30 x 440mm center main wing tube 1 10 x 305mm forward and aft main wing tubes 2 one end threaded w nylon inserts 22 x 295mm outer panel wing tubes 2 10 x 150mm outer panel wing tubes 2 one end threaded w nylon ...

Страница 8: ...L ANTENNA NOSE GUNNER CANOPY BOTTOM COCKPIT COCKPIT CANOPY OIL COOLER AIR SCOOP INBOARD WING PANEL OUTBOARD WING PANEL TAIL GUNNER CABIN TAIL GUNNER CANOPY TAIL GUNS SIDE GUN PACKS CARBURETOR INTAKE WAIST GUN WINDOW WAIST GUN THESE ARE THE NAMES OF SOME OF THE SCALE PARTS 8 ...

Страница 9: ... do the rest of the parts as you need them ASSEMBLE THE WING PANELS HINGE THE FLAPS AND AILERONS During construction there will be several occasions where epoxy cleanup will be necessary Instead of wasting whole paper towels stack three or four paper towels on top of each other and cut them into small squares This will conserve paper towels and the little squares are easier to use than whole paper...

Страница 10: ... 3 Read the note following this step Then cut out the left Engine Mounting Template since we re doing the left nacelle fi rst from the back of the manual for the type of engine you will be using two stroke or four stroke Use tape or spray adhesive to hold the template to the fi rewall Then use a sharpened piece of wire or a large T pin to mark the center of the holes in the template into the fi re...

Страница 11: ...le servo in the lower location the location in the bottom of the nacelle next to the landing gear mount For some four stroke engines such as the O S Max 70 illustrated in this manual it will be easiest to mount the throttle in the upper location as shown in the photo If using the O S Max 70 the carburetor will also have to be reversed to position the carburetor arm on the top If using the O S 70 r...

Страница 12: ...tank otherwise they could get stuck 8 Mount the left nacelle to the wing with the nylon bolts Fit the fuel tank into the nacelle Then install and glue two 3 8 x 3 1 16 10 x 78mm plywood fuel tank sticks from the laser cut plywood sheet into the slots to hold the fuel tank in position Note Even though fuel lines appear in a few of the following photos there s no need to connect them until later aft...

Страница 13: ...in landing gear wire into the landing gear mount using two nylon straps and four 4 x 1 2 13mm screws Mount one of the main wheels to the landing gear wire with two 5mm wheel collars and 6 32 set screws with threadlocker on the threads 4 Mount the other landing gear to the right inboard wing panel the same way Add a drop of oil to both sides of the wheels where they contact the collars MOUNT THE FI...

Страница 14: ...e nacelle covers from the wing panels 2 Look at the photos on page 15 to see where the door hinges are mounted Use coarse sandpaper to roughen the inside of the left nacelle cover where the landing gear door hinges will go 3 Use a hobby knife to scrape away the black paint from the recesses inside one set of fi berglass main landing gear doors so the glue will adhere for the door hinges 4 Place th...

Страница 15: ...et the bases of the hinges to lay flat on the door and on the nacelle cover Make sure the glue press up and fills the holes of the mounts NACELLE COVER GEAR DOOR 10 Use coarse sandpaper to roughen the bottom of each hinge base so glue will adhere Test fi t the hinge assemblies to the doors and nacelles each hinge assembly should be in the location and orientation shown If necessary adjust the leng...

Страница 16: ...d three are left over for spares The easiest way to glue on the washer is to pick it up with a hobby knife apply a thin fi lm of thin CA to it and place it on the lever centered over the hole Then turn the lever over and press down over a piece of plastic fi lm from a sandwich bag or leftover MonoKote backing or wax paper 6 Remount the lever mount to the nacelle with the 2 x 3 8 9 5mm button head ...

Страница 17: ...and complete the inboard pushrod using another regular clevis and the hardware shown Do not install the nylon retainer on the brass screw lock pushrod connector until instructed to do so later 14 Connect the outboard pushrod to the bellcrank lever Use medium CA to glue the control horn to the door in alignment with the lever Retract and extend the gear by hand adjusting the length of the pushrod s...

Страница 18: ...e way or if the doors don t fully close following is a list of possible problems and solutions A One or both pushrods may be too long Shorten the pushrods in small increments B One or both pushrods may be too short not allowing the gear to retract fully Lengthen the pushrods C There may be too much or not enough tension in the spring Move the spring to a different setting on the lever mount D Ther...

Страница 19: ...ttom two holes 4 Use a 4 40 x 3 8 9 5mm Phillips screw and two 4 washers to pull 4 40 blind nuts into the back of each hole just drilled in the fi rewall Use epoxy to glue in the blind nuts as they go in or use a few drops of thin or medium CA to glue in the blind nuts after they are all the way in 5 Note that there are two different plywood cowl mounting tabs long ones A and short ones B One of t...

Страница 20: ...aring protection is recommended E Following are the best tools for cutting fi berglass I A rotary tool II A fi ne point felt tip pen for marking Afterward ink can be removed with a paper towel and denatured alcohol III A 3 32 ball driver will be indispensable when fi tting the cowl later IV Curved and fl at hobby fi les V Various cutting bits for your rotary tool the carbide cutter is best for mak...

Страница 21: ...i t Then drill 1 16 1 6mm holes into the wing through the holes in the intake Mount the carburetor intake to the wing with eight 2 x 3 8 9 5mm button head Allen screws 17 Trim the top of the cowl as necessary to accommodate the intake With the intake and cowl in position place a propeller on the engine and position the cowl so it looks best due to the out thrust and down thrust of the engine a com...

Страница 22: ...d and a 9 32 7mm O D K S brass tube Sharpen the end of the tube and then use it to cut a hole through the balsa block Round the top of the block to fi t the inside of the cowl Glue a 1 4 6mm piece of the brass tube into the balsa block so it sticks out the rounded side of the block 1 32 5mm 25 Cut a 9 32 7mm hole in the cowl where you want the fueling line to come out Use epoxy mixed with microbal...

Страница 23: ... the receiver centering the trims on the transmitter and then turning on the transmitter and receiver Once you fi nd the servo arm that s 90 degrees cut off the rest 2 Mount the servos to the mounting blocks on each of the six hatches by using the holes in the servos as guides for drilling 1 16 1 6mm holes into the servo blocks Temporarily mount the servos with the screws that came with them remov...

Страница 24: ...electrical soldering This is what a properly soldered clevis looks like shiny solder with good fl ow no blobs fl ux removed 6 Hook up the fl aps and ailerons using the hardware shown For the fl aps note that when the fl aps are fully retracted up the servo arms should be back and when the fl aps are extended the servo arms should be forward Also note that the front edge of the fl ap control horns ...

Страница 25: ...inges Same as the rudders don t push the elevators up too close to the stab Otherwise you may not be able to get full elevator throw which is 1 1 4 32mm up and down 8 While you ve got some epoxy mixed up round one end of the 1 4 x 1 1 2 6 x 40mm stabilizer dowel Then glue it into the leading edge of the stabilizer with 3 8 10mm protruding HOOK UP THE RUDDERS AND ELEVATORS 1 Take the rudder servo h...

Страница 26: ... control throws as shown on page 43 Back to the elevator servo 10 Mount the elevator servo in the top of the elevator if necessary cut a notch in the servo opening in the bottom of the stab to accommodate the servo wire Connect the elevator servo to the elevators using the hardware shown don t forget to remove the servo mounting screws and harden the screw holes with thin CA Remount the servo 11 C...

Страница 27: ...receded by an R and steps that are for fi xed gear only are preceded by an F If installing retracts skip the following two steps F6 Assemble the nose gear mount by using eight 3 x 12mm fl at head Phillips screws to attach the aluminum mounting brackets the plastic nose gear block Note which side of the nose gear block is the bottom F7 Attach the nose gear wire to the nose gear mount using the hard...

Страница 28: ...e easier to do if the gear is retracted If installing fi xed gear temporarily remove the nose gear Drill four 7 64 2 8mm holes through the rails at each mark Mount the gear to the rails with four 6 x 1 2 13mm Phillips screws 16 Mount the nose wheel to the gear If using retracts cut the axle to the correct length and grind or fi le a fl at spot for the set screw If using fi xed gear mount the nose ...

Страница 29: ...0 blind nut in the back of the former Tighten the screw as much as possible without binding the lever 4 Test fi t the nose gear door to the fuselage with the special spring hinges Note The hinges are installed to spring the door open not closed Holding the door closed adjust the hinges so the door is centered in the opening 5 Remove the door hinges Paint the hinge recesses with black or gray paint...

Страница 30: ...od cockpit fl oor as a guide drill 1 16 1 6mm holes through the balsa sticks for the mounting screws Mount the cockpit fl oor with four 2 x 3 8 9 5mm button head Allen screws Remove the screws harden the holes with a drop of thin CA and allow to harden 3 If painting the cockpit now is the best time to do so The cockpit shown in this manual was simply painted fl at black but you could add more deta...

Страница 31: ...the yoke posts to the correct height and glue them into position 12 Position the cockpit canopy over the cockpit Drill two 1 16 1 6mm holes through each side of the canopy into the fuselage where shown Remove the canopy enlarge the holes in the canopy only with a 3 32 2 4mm drill and then mount the canopy to the fuselage with four 2 x 3 8 button head Allen screws HOOK UP THE AIR SYSTEM 1 Mount the...

Страница 32: ...of the lines 8 Use RTV silicone or epoxy to glue the air tank into position be certain the base or front of the tank facing the front of the fuselage does not protrude more than 1 8 3mm forward of the front former Otherwise it will interfere with the back of the scale nose gunner cabin One Final Note About Retracts Test the retract system either now or later when you have completed the rest of the...

Страница 33: ... We ve already had the wings on and off the fuselage a couple of times but now it s time to mount them for real One end of the forward and aft aluminum wing tubes is already drilled and tapped for 4 40 screws but the other end has to be drilled and tapped too The balance point is 5 127mm from the leading edge of the wing where it contacts the fuselage 5 127mm 1 If you will not be balancing the mod...

Страница 34: ...black covering in place Wipe away the ink with one of your small paper towel squares and denatured alcohol 3 Glue the air scoop to the wing with medium CA 4 Mount the right air scoop to the right wing panel the same way 5 Fit the end of one of the 10 x 150mm aluminum outer panel wing tubes that has the threaded hole into the left inboard wing panel Secure the tube in the wing with a 4 40 x 3 4 19m...

Страница 35: ...r a good fi t 3 Use medium grit sandpaper to scuff the edges of the bottom and the window frame where they will join 4 Use masking tape to hold the top to the bottom the best way is to lay both pieces upright on your workbench and tape them together IMPORTANT For the following two steps a CA tip is necessary for gluing together the nose gunner canopy 5 Working carefully and taking your time from i...

Страница 36: ...droop as it would be when the plane is grounded or when the gun is not in use rubber bands on the top and bottom will hold the gun level Optional For added scale effect insert eight 00 90 x 1 8 screws and 00 90 nuts into the canopy around the machine gun pivot to replicate the bolts on the full size subject The retainer ring can also be painted silver as the model on the kit box cover Use this pho...

Страница 37: ... additional scale details you prefer or do any extra painting that may be more diffi cult to paint after the parts have been glued in 7 Glue the tops to the ammo boxes and then glue the ammo boxes to the ammo tray Glue the ammo tray to the top edge of the cabin fl oor where shown Glue the kneeling pad to the post coming up from the fl oor 8 Add any other fi nal scratch built scale details you like...

Страница 38: ...f the fuselage 5 Position the top turret canopy on the fuselage over the guns Center the openings in the turret canopy on the guns Then use a fi ne point felt tip pen to mark the outline of the canopy directly onto the fuselage 6 Cut the covering 1 16 1 2mm inside the line you marked all the way around Cut another line 1 16 1 2mm inside the fi rst Remove the strip of covering so the turret will be...

Страница 39: ...ack The front of the bottom gun should protrude from the front of the blister 3 1 2 88mm and the front of the top guns should be even with the bottom one The following steps will be easier to do with the wings removed and the fuselage laying on its side 2 Position the left gun pack where it fi ts the fuselage and so the gray and green paint line on the guns matches the fuselage Once positioned hol...

Страница 40: ...ck on the fuselage First glue the bottom and then the top gun pack down using thin CA with a CA applicator tip 13 Glue on the right gun pack then the right and left waist gun windows with thin CA and a CA applicator tip MOUNT THE ADF FOOTBALL ANTENNA The ADF football antenna is attached to the model with magnets This way it can be easily removed for transportation 1 Use the plywood template as a g...

Страница 41: ...nstable and possibly unfl yable At this stage the model should be in ready to fl y condition with all of the systems in place with the possible exception of the receiver battery pack if you decided to fi nd out where the model balances fi rst including the engines with propellers and propeller hubs landing gear the complete radio system and all the scale details that you will have in place when yo...

Страница 42: ... the adhesive may weaken causing the weight to fall off Use 2 sheet metal screws RTV silicone or epoxy to permanently hold the weight in place 6 Connect the receiver battery to the on off switch using a servo extension if necessary Secure the connections with heat shrink tubing 7 IMPORTANT Once you ve mounted the battery or added any additional weight recheck the C G after it has been installed BA...

Страница 43: ... model CHARGE THE BATTERIES Follow the battery charging instructions that came with your radio control system to charge the batteries You should always charge your transmitter and receiver batteries the night before you go fl ying and at other times as recommended by the radio manufacturer CAUTION Unless the instructions that came with your radio system state differently the initial charge on new ...

Страница 44: ...r right after operation Make sure fuel lines are in good condition so fuel will not leak onto a hot engine causing a fi re To stop a glow engine cut off the fuel supply by closing off the fuel line or following the engine manufacturer s recommendations Do not use hands fi ngers or any other body part to try to stop the engine To stop a gasoline powered engine an on off switch should be connected t...

Страница 45: ...may have used do not interfere with other systems servo arms pushrods cables etc 15 Make sure the fuel lines are connected and are not kinked 16 Balance the propellers and spare propellers 17 Securely tighten the propeller hubs Be certain to use threadlocker on the threads 18 Place your name address AMA number and telephone number on or inside your model 19 Cycle your receiver battery pack if nece...

Страница 46: ...nly or unexpectedly and can be controlled well enough to get it safely back to the ground if one engine does quit There are two different approaches that can be taken if an engine quits Plan A is to follow the Single Engine Out Procedures to carefully fl y the model on one engine allowing you to bring it closer to the landing zone or runway If however you become confused or fi nd yourself not able...

Страница 47: ...lating the throttle as necessary to maintain the glide path and airspeed If you are going to overshoot the runway smoothly advance the throttle always ready on the right rudder to counteract torque and retract the fl aps when enough airspeed is gained Climb out to make another attempt When fi nally ready to land and the model is a foot or so off the deck and you are ready to make the landing fl ar...

Страница 48: ...48 ...

Страница 49: ...49 ...

Страница 50: ...igh speed needle includes both a ratchet spring and O ring seal to lock settings in for the long haul Includes A3 glow plug E 3010 muffler and 2 year warranty protection OSMG0547 Displacement 0 455 cu in 7 5 cc Bore 0 866 in 22 0 mm Stroke 0 772 in 19 6 mm Output 1 65 bhp 16 000 rpm RPM Range 2 000 17 000 Weight w muffler 17 2 oz 489g Includes A3 glow plug E 3010 muffler Requires glow fuel prop Su...

Страница 51: ...ting template for O S 70 four stroke Left engine mounting template for O S 70 four stroke Left engine mounting template for O S two stroke Right engine mounting template for O S two stroke Bottom of plane Cut on dotted line Cut on dotted line LEFT RIGHT RIGHT LEFT 51 ...

Страница 52: ......

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