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C

rutch

The crutch is the primary structure or backbone of the Model 110 helicopter. All major

mechanical assemblies and radio components are fastened to the crutch. It is the

only part of the Model 110 that requires fuel-proofing with dope or paint, and is built

first to allow time for the dope to dry before attaching other assemblies.

1.

q

Clear off a 4ft x 3ft (1.2m x 1m) area on a table or bench to use as a building area. Cover

your building area with 10 to 15 sheets of newspaper to protect the surface from glue

drips and knife cuts. Collect the building supplies listed in the front of this manual and

locate the

Tools Bag

supplied in the kit. Keep building supplies and tools nearby as you

are building.

Construction Manual

Crutch

LITE MACHINES

5-1

Optional servo

doublers for

smaller servos

Upper keel

stiffener

Lower keel

stiffener

Keel

Rear servo bay

Front servo bay

Lower stiffener placement

depends on servo size

Firewall slot

Align upper

keel stiffeners

here

Lower keel

stiffener

Upper keel

stiffener

Figure 5-1.

Содержание LMH 100

Страница 1: ...the Lite Machines Model 110 helicopter including but not limited to the main rotor main rotor blades tail rotor tail rotor blades Arlton Subrotor stabilizer Arlton Gyro stabilizer swashplate fuselage...

Страница 2: ...ments Requirements 3 1 Radio 3 1 Engine and Fuel 3 1 Field Equipment 3 2 Building Supplies 3 2 General Building Guidelines General Building Guidelines 4 1 Friction and Binding 4 1 Balance of Rotating...

Страница 3: ...Tail Boom 10 1 Engine Engine 11 1 Final Assembly Final Assembly 12 1 Radio Installation Radio Installation 13 1 Pushrods and Radio Adjustment Pushrods and Radio Adjustment 14 1 Final Check Final Chec...

Страница 4: ...ners Collective pitch main rotors allow for advanced aerobatics and engine off autorotation maneuvers that are typically flown by more experienced pilots The tail rotor mechanism of the Model 110 heli...

Страница 5: ...rts damaged by improper assembly modification abnormal service or handling or crashes 2 To take advantage of this warranty the Purchaser must provide proof of purchase receive a return authorization R...

Страница 6: ...E TO THE USE OR INABILITY TO USE THIS PRODUCT Lite Machines shall not be liable or in any way responsible for any damages related to modifications repairs attempted repairs or crashes IN NO EVENT SHAL...

Страница 7: ...or anything that could start a fire if exposed to fuel such as shorting or sparking battery terminals or the furnace in your home 6 Remove excess fuel from your model with a cloth after refueling or p...

Страница 8: ...ngines designed specifically for the Model 110 helicopter Use of more powerful engines such as racing engines is potentially dangerous and will void all warranties 6 Do not use fuel containing more th...

Страница 9: ...n Modifications could lead to part failure 4 Always replace the main and tail rotor blades in sets if damaged 5 Do not store your model in direct sunlight Prolonged exposure to ultraviolet light can w...

Страница 10: ...trol arms 2 Four 4 MICRO servos Hitec HS 80 HS 81 Futaba 3101 Airtronics 94501 JR 341 etc 3 250 mAh to 600 mAh battery pack flat style 4 2 piece Dean s antenna This short whip style antenna replaces t...

Страница 11: ...ngines 4 DuBro Kwik Klip glow plug starter 5 Paper towels and spray cleaner Model fuel contains lubricating oil which is exhausted by the engine and coats everything Fantastik all purpose cleaner work...

Страница 12: ...g and instant gratification is desired 19 Small phillips screwdrivers for installing radio components jeweler s style works best 20 Small flat head screwdriver for adjusting needle valve on engine 21...

Страница 13: ...e or lead to part failure Remember proper assembly and safe operation of your Model 110 helicopter are your responsibilities Friction and Binding For the best flight performance it is important that a...

Страница 14: ...ance all rotating assemblies as described in the instructions Fastener Identification The English system of identifying bolts and screws involves three basic descriptive numbers bolt size number of th...

Страница 15: ...sually used against wood surfaces A few assemblies require special washers These washers are labeled in the drawings See Fig 4 2 for full size drawings of standard and oversize washers Many hardened a...

Страница 16: ...ilding area Cover your building area with 10 to 15 sheets of newspaper to protect the surface from glue drips and knife cuts Collect the building supplies listed in the front of this manual and locate...

Страница 17: ...eel stiffeners made of 1 8 x 1 4 spruce stick and a servo to test fit in the rear servo bay Install rubber grommets supplied with the servos into each of the servo mounting arms as shown in Fig 5 3 on...

Страница 18: ...ng screws from splitting the wood Hitec HS 81 servos should fit without any further modification For smaller servos you may need to add two 1 7 16 37mm servo doublers made of 1 8 x 1 4 spruce as shown...

Страница 19: ...mounting arm and mark the position of each servo mounting screw on the keel Hint To determine the correct drill size for the pilot holes drill a practice hole in a piece of scrap keel stiffener materi...

Страница 20: ...all servos are correctly mounted remove them from the keel 14 q As shown in Fig 5 4 lay out the remaining plywood crutch parts flat on your work surface Double check that all pieces are in the same or...

Страница 21: ...bracket into the slot at the rear end of the keel Push the bracket and keel together until the upper end of the bracket is snug against the upper keel stiffeners the lower edge of the bracket will not...

Страница 22: ...ngle between two parts greatly increasing the strength of the joint For maximum strength CA fillets should be no less than 1 16 1 6mm wide at the base with 1 8 3 2mm being preferred for most joints Sp...

Страница 23: ...o remove any fuzz and apply a finishing coat to all surfaces Spray dope is much thinner than brushed on dope If using a spray can apply four to six coats to all surfaces allowing 30 minutes between co...

Страница 24: ...r prolonged use and many crashes Note The canopy halves and reinforcements are removed from the plastic canopy sheet in two steps with a hobby knife The first step involves scoring the plastic so that...

Страница 25: ...nopy doublers and seam reinforcement strip from the plastic canopy sheet Keep a long piece of scrap plastic for later use Hint The following steps require trimming the excess plastic from the canopy h...

Страница 26: ...E THE EDGE PROJECTION ON THE RIGHT CANOPY HALF The right side edge projection fits inside the left canopy half and acts as a glue surface when joining the canopy halves Construction Manual Canopy LITE...

Страница 27: ...or gluing 8 q Sand the edge projection glue strip on the right canopy half and the inside edge of the left canopy half with coarse 120 grit sandpaper to prepare the surfaces for gluing Also sand the a...

Страница 28: ...are the surfaces for gluing Glue the reinforcements to the inside of the right canopy half as shown in Fig 6 5 11 q Assemble the canopy halves with several pieces of a masking tape The halves should a...

Страница 29: ...nly fuel proof paint Pactra Formula U polyurethane etc Test the paint on a piece of scrap plastic to make sure the paint will not damage the canopy Use bright colors since they are easier to see in th...

Страница 30: ...ine exhaust pockets on the canopy and the bottom of the plastic turbine exhausts with coarse 120 grit sandpaper to prepare the surfaces for gluing Apply a layer of thick CA glue to the inside of the c...

Страница 31: ...TEN RETTEN RETTEN SAR SAR SAR SAR HEER HEER HEER HEER LUFTWAFFE LUFTWAFFE LUFTWAFFE LUFTWAFFE LUFTWAFFE LUFTWAFFE LUFTWAFFE LUFTWAFFE Part Number 12035 STEP STEP STEP STEP L U F T E IN L A S S L U F T...

Страница 32: ...lifting potential of the main rotor Many unique features of the Model 110 main rotor which include the main rotor blades Arlton Subrotor stabilizer blade grips etc are patented or patent pending Hint...

Страница 33: ...t and hammer gently tap the pin through the hub until it is flush with the inside edge of the pushrod through hole in the feathering plate Do not tap the pin further into the through hole The featheri...

Страница 34: ...ng the rotor blades 4 q Attach the teeter to the forks on top of the hub with the 3 32 x 5 8 teeter pin The teeter should move very freely Important Both the feathering plate and teeter must move very...

Страница 35: ...l but less stable You can move the Z links to the inner position later if you want to experiment but do not install a Z link from an outer hole to an inner hole This will bind the rotor head 8 q Make...

Страница 36: ...16 setscrew weights into ONE Subrotor blade as shown Tighten the first setscrew only until the through hole is blocked tightening any further may split the plastic THE FIRST SETSCREW MUST COMPLETELY B...

Страница 37: ...ter 12 q Screw four 10 32 x 5 16 setscrew weights into the end of the open Subrotor blade as shown Tighten the first setscrew only until the through hole is blocked tightening any further may split th...

Страница 38: ...arings Although these bearings are oiled during manufacture the original oil is thin and can evaporate over time As a precaution place two 5x11x4mm bearings on a paper towel and apply oil all around t...

Страница 39: ...oblems In later steps you will position the main shaft more accurately and then tighten all of the bolts and setscrews Note The main rotor shaft on your Model 110 is made from high strength spring ste...

Страница 40: ...20 q Lightly tighten the setscrews in the upper bearing collar While pulling the main shaft up against the upper bearing push the lower bearing collar down as far as it will go against the lower ball...

Страница 41: ...ase such as finger prints so that balancing tape will stick 23 q To balance the Subrotor stabilizer support the crutch on two books as in Fig 7 11 so that the main rotor assembly overhangs the edge of...

Страница 42: ...ve the warning stickers from the main rotor blade If they do not peel off easily soak the blades in water for 15 minutes and rub them off 26 q Carefully remove the molding flash from the leading edge...

Страница 43: ...N Balancing the rotor is easier when one blade is mounted upside down You will reverse the upside down blade after balancing the rotor 29 q Tighten the lead lag and flapping bolts so the blades will s...

Страница 44: ...ADES ARE LOCKED RIGIDLY IN PLACE OR IF THE BLADES DO NOT FLAP UP AND DOWN ABSOLUTELY FREELY YOUR MODEL 110 HELICOPTER WILL NOT BE STABLE AND WILL BE DIFFICULT TO CONTROL 33 q With the tip of a hobby k...

Страница 45: ...s The swashplate on the Model 110 helicopter is uniquely simple in design has double the number of ball bearings found in many other swashplates and can be easily adjusted for wear 1 q Slip the race r...

Страница 46: ...e probably screwed together too tightly to allow smooth rotation Reinsert the wrench clip to hold the race ring and slowly unscrew the outer race counter clockwise until one of the holes in the outer...

Страница 47: ...rew the bolts into the swashplate as you did with the first bolt Remove the first bolt apply threadlock to the threads and screw it back into the swashplate Tighten all bolts but be careful not to str...

Страница 48: ...each turn and reassemble Repeat either process until the swashplate rests against the universal ball and moves freely Note that both L links must be the same length to prevent the swashplate from bind...

Страница 49: ...zer patented with patents pending which is built onto the tail rotor linkages and takes the place of traditional electronic systems 1 q Slide the gyro eyelet through the spider and a standard 4 washer...

Страница 50: ...e bent end of the push pull rod 4 q Hold the gyro spindle and pivot mount together against a very hard solid surface such as a concrete floor or patio as shown in Fig 9 2 in order to install the gyro...

Страница 51: ...ot freely If a pin is not going in straight and the gyro spindle binds carefully straighten the pin with a pair of pliers Keep checking the straightness of the pins while tapping them into the pivot m...

Страница 52: ...the threaded rods completely through the paddle grips until the ends of the rods are flush with the interior of the hub An easy way to do this is to lay the unassembled components flat on the edge of...

Страница 53: ...e sure that the gyro paddles can pivot very freely about the gyro pivot pins Locate the source of any friction or binding and fix it before proceeding Note The gyro Z links are designed to pop out of...

Страница 54: ...lton Gyro stabilizer The tail rotor incorporates specially designed high efficiency swept rotor blades patented which greatly reduce the mechanical complexity and power consumption of the tail rotor C...

Страница 55: ...and insert the wire into the rear bushing located at the notched end of the boom through the center bushing and out the front bushing Note The hole in a 1 washer is smaller than the hole in a 2 washer...

Страница 56: ...cause it to crack 10 q Secure the tail rotor bearing collar to the shaft with two 6 32 x 1 8 setscrews and threadlock while lightly squeezing the hub and bearing collar together this insures that the...

Страница 57: ...n inch to open the spacing between the bevel gears and check the mesh again Repeat the process until the gears run smoothly Note that the gear mesh should not be too loose or too tight Tight gears abs...

Страница 58: ...glossy surface Apply THICK CA to the fin and gearbox and hold the fin in position against the gearbox for about ten seconds or until the glue starts to set Note CA accelerator can cause certain plasti...

Страница 59: ...oil from the last 1 4 6mm of the push pull rod extending from the tail rotor shaft Mount the gyro assembly to the end of the push pull rod as before using threadlock on the pivot mount setscrew as sh...

Страница 60: ...q Cut a 3 16 5mm piece of fuel tubing for use as a needle valve seal Unscrew the needle valve from the spraybar slide the tubing over the end of the spraybar and carefully screw the needle valve back...

Страница 61: ...rop of oil between the washer and the clutch bell pinion gear 4 q If you intend to use 15 nitro fuel place two thin copper glow plug washers into the cylinder as shown in Fig 11 3 If you intend to use...

Страница 62: ...Construction Manual Engine LITE MACHINES 11 3 2 4 glow plug washers Glow plug Heat sink Figure 11 3...

Страница 63: ...nment to insure a smooth running power transmission Make sure your radio batteries are charged you will need to use the radio in the next section 1 q Attach the plastic landing gear skids to the wire...

Страница 64: ...ft as shown in Fig 12 3 review Fig 7 10 if necessary 4 q Snap the follower link onto the middle of the three swashplate universal balls Loosen the setscrews in the two bearing collars on the main shaf...

Страница 65: ...rmly against the upper and lower bearings so the shaft cannot move vertically and secure the setscrews in the bearing collars with threadlock MAKE SURE THE COLLAR SETSCREWS ARE VERY TIGHT 6 q Snap the...

Страница 66: ...ontally so that the back of the pinion gear teeth are even with the outer edge of the crown gear Rotate the tail tube until the tail fin is vertical and the tail rotor shaft is horizontal When the tai...

Страница 67: ...lly as in Fig 12 5 Look straight down from above at the end of the top paddle Notice that the paddle automatically changes pitch as you tilt the gyro back and forth 11 q While holding the gyro paddles...

Страница 68: ...crutch so they can be shifted slightly to set the main gear mesh 14 q Bolt the engine clutch assembly to the crutch with four 4 40 x 3 8 bolts washers and nylock nuts as shown this may be easier if th...

Страница 69: ...ARE VERY TIGHT 16 q Proper spacing between the clutch pinion and main gear is important for maximum power transfer with minimum drag and gear wear To set the gear mesh adjust the horizontal placement...

Страница 70: ...h smoothly completely tighten all of the upper and lower bearing block bolts 17 q Bend the 3 32 2 4mm diameter aluminum fuel filler tube with your fingers until it matches the curvature shown at full...

Страница 71: ...in the crutch and through two short nyties as shown in the cut away view of Fig 12 10 Pull the tank straps through the nyties until the tank is held firmly against the crutch Clip the ends of the tan...

Страница 72: ...ength of silicone fuel tubing to the sump on the tank and the other end to the fuel inlet on the engine Note that the fuel line passes through the grommet in the crutch see Fig 12 10 Construction Manu...

Страница 73: ...he standard wire antenna and soldering on a connector 5 q Press a rubber grommet supplied with the whip antenna into the antenna hole in the firewall and mount the whip antenna If using a two piece an...

Страница 74: ...nstruction Manual Radio Installation 13 2 LITE MACHINES Whip antennae Battery 1 8 black foam tape On off switch Wrap with tape and cover with plastic bag not shown Receiver 1 4 foam padding Figure 13...

Страница 75: ...LITE MACHINES 13 3 Aft cyclic Left tail rotor Right tail rotor Receiver High throttle Low throttle Forward cyclic Note radio wires not shown Paperclip wire attach to ON OFF switch Battery Left cyclic...

Страница 76: ...on flip the servo reversing switch on the transmitter corresponding to that servo DOUBLE CHECK THE ROTATION DIRECTION OF EACH SERVO IT IS PRACTICALLY IMPOSSIBLE TO FLY A HELICOPTER WITH THE CONTROLS R...

Страница 77: ...wire with coarse 120 grit sandpaper and coat the wire with soldering flux Stuff a 1 4 6mm length of solder into the hole in the threaded coupler and hold the coupler with a pair of pliers Insert the w...

Страница 78: ...ANNOT FALL OFF 5 q In the following steps you will install the pushrods and adjust the servos To correctly orient the servos for pushrod installation turn on the transmitter and receiver move the thro...

Страница 79: ...Construction Manual Pushrods and Radio Adjustment LITE MACHINES 14 3 Power ON Throttle trim low Throttle stick low Figure 14 3...

Страница 80: ...Manual Pushrods and Radio Adjustment 14 4 LITE MACHINES Servo wheel Arm radius Fore aft cyclic 90 deg Tail rotor Throttle 45 deg 20 deg Note Radio wires not shown Level Level Left right cyclic 90 deg...

Страница 81: ...m to 12mm Fit the wheels to the left right and fore aft cyclic servos at the angles shown in Fig 14 4 Trim all unused arms off the wheels Secure the servo wheels to the servos with servo wheel screws...

Страница 82: ...ing toward the Model 110 As you move the cyclic right stick on the transmitter forward and backward the swashplate should tilt forward and backward Left right stick motion should tilt the swashplate t...

Страница 83: ...the proper differential throw mount the servo wheel to the tail rotor servo at about 20 degrees from vertical as shown in Fig 14 4 the angle doesn t have to be exact Secure the servo wheel with a serv...

Страница 84: ...t done Select a servo wheel with holes at a radius of 27 to 35 7mm to 9mm and trim off all but one arm 20 q Slide the throttle pushrod forward through the throttle hole in the firewall and into the ap...

Страница 85: ...ort the cylinder and ruin your engine 22 q The throttle valve should completely block the muffler exhaust port when the transmitter throttle stick and trim level are in the full low position Adjust th...

Страница 86: ...hard to move with your fingers something is binding Check for and fix tight pivot bolts tight ball links pushrods rubbing on parts of the crutch etc 25 q Collect the servo and battery wires into a bu...

Страница 87: ...you smack the ground hard you don t want to turn off the radio 7 q Make sure the engine mounting bolts and muffler strap bolts are tight 8 q Slide the canopy over the crutch until the canopy doublers...

Страница 88: ...er lose your Model 110 12 q Your Model 110 is done Take lots of pictures this is as clean and shiny as it will ever be Show it to your friends and family and convince them to buy one Hint DO NOT THROW...

Страница 89: ...Construction Manual LITE MACHINES...

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