Suppliers List

These are items we recommend for use in Berkut. Some of the more common things such as metal, we have not specified since most builders can find these things easily. We’ve provided you with where to get the items and the part numbers you’ll need to place the order. A number of items require a distributor and therefore may be ordered through us. Many of these parts are by no means exclusive to the Berkut. We have purposely not listed prices because they change often and we felt it best you contact the vendors for pricing. We welcome any additions to this list.

UPDATED: Monday, August 8, 2005

Actuators

  • Landing Brake Actuator
    Berkut Engineering
  • Pitch Trim Actuator
    Berkut Engineering
  • Roll Trim Actuator
    Ray Allen Company (formerly MAC)
    2525-8 Pioneer Ave
    Vista, CA 92083
    (760) 599-4720
    (760) 599-4383
    www.rayallencompany.com
    Servo T3-12A with the Berkut Mod
    When ordering this servo, you must ask for the Berkut mod. This mod allows the servo to move independently in both directions, not just one.
  • Landing Brake
    Custom Composites - Ken Miller
    P.O. Box 2297
    Aquebogue, NY 11931
    (516) 381-5382
    www.long-ez.com
    With the  problems getting the actuator we have used in the past, James Redmon made this suggestion. We have not tried this version, so a call to Ken might be in order. It appears to be the best alternative we have found. He also makes a Pitch Trim actuator.Pitch Trim
  • Alex Strong Pitch Trim
    P.O. Box 1316
    Yermo, CA 92398
    (760) 254-3692
    email: astrong@verizon.net
    www.strongpitchtrim.com
    This is the actuator Steve Drybread recommended as an alternative to the one we can no longer easily obtain. Please contact us for installation. It should be installed just like to old one. DO NOT use the Alex Strong install directions, they will not work and require a lot of work you do not need to do.

Bearings and Related Items

  • Nose Gear Thrust Bearings and Washers
    Precision Bearing
    2635 S Fairfax Ave
    Culver City, CA 90232
    (800)-752-3500 in CA
    (800)-421-0602 outside CA
    (310)-836-9319 fax
    Thrust Bearing (2 required) part# NTA1018
    Small Thrust washer part# TRA1018
    Large Thrust Washer part # TRB1018
    You'll need to buy about 8 of each thrust washer because you cannot determine what thicknesses or stack you'll need until you have several washers to use.
  • KP8 Bearings and Circlips
    Precision Bearing
    333 Indiana Street
    El Segundo, CA 90245
    (310) 322-6611
    (310) 322-6616 fax
    KP8 Bearing
    Circlip #5000-168
    Four of each are required.
  • Control Stick Bearings
    Precision Bearing
    2635 S Fairfax Ave
    Culver City, CA 90232
    (800)-752-3500 in CA
    (800)-421-0602 outside CA
    (310)-836-9319 fax
    SSRIF814-ZZ
    One required for the front stick and one for the rear stick.
  • Spherical Bearing and Retainer Clips- Ailerons
    Precision Bearing
    2635 S Fairfax Ave
    Culver City, CA 90232
    (800)-752-3500 in CA
    (800)-421-0602 outside CA
    (310)-836-9319 fax
    This bearing is known by several names and part numbers including: Astro ADW-10 or equivalent, MS21232-10 or Heim NRG-10. The retainer clip part # 5000-118. Two of each are required. You must also order the Spherical Bearing Housing from Berkut Engineering. This housing is mounted into the glass and holds the bearing that is held in by the clip.

Canopy Components

  • Airplane Plastics
    9785 Julie Ct
    Tipp City, OH 45371
    (937) 669-2677
    This is the original Berkut Canopy we used for many years until Todd Silver came along. The color is Easy Eye Green. The optical quality of these canopies is great. They are pricey but nice canopies.
  • Canopy Bubble
    Todd Silver
    1445 NE 33rd St.,
    Ft. Lauderdale, FL, 33334
    (954) 579-0874
    email: bsilver05@aol.com
    website: www.toddscanopies.com
    This canopy bubble is made from 1/4 ” lexan, not the standard 3/16”.
  • Canopy Gas Struts, Ball Studs and Clips
    Orr and Orr
    3520 S Morgan St
    Chicago, IL 60609
    (773) 254-0022
    (773) 254-4144 fax
    www.orrorr.com
    Canopy Gas Strut part #H9510-30 (4 per plane)
    Gas Strut Ball Stud part# H9426 (8 per plane)
    Ball Stud Clip part#H9418 (8 per plane)

Control Systems

  • Control Stick Grips
    Ray Allen Company (formerly MAC)
    2525-8 Pioneer Ave
    Vista, CA 92083
    (760) 599-4720
    (760) 599-4383
    www.rayallencompany.com
    Stick G5
  • Control/Mixture Cables
    Cablecraft
    4401 S Orchard St
    Tacoma, WA 98411
    (253) 475-1080
    (253) 474-1623 fax
    www.cablecraft.com
    Kitsalesccd@tuthill.com
    Cable Number- 580-700-TT-3
    Throttle-109"
    Mixture-100"
    Slave-51"
    The cable part number is the same for each cable, you just need to tell them the lengths and use of the specific cable. These cables are high quality and thus a bit more pricey than what is available from Spruce.
  • Throttle Quadrants
    Aircraft Spruce
    Two Lever Quadrant Part #05-15910
    Single Lever Quadrant Part #05-15905
    Most people prefer the two-lever quadrant in the front and the single lever in the back. You certainly may use a two-lever quadrant in the back if you wish for the passenger to have a mixture control, however this will require another slave cable. This is not the only throttle quadrant to choose from but one that fits easily in the Berkut console. Dave removes the knobs and shortens the levers, as they are quite tall. He then machines new knobs but some builders have just shortened the levers and used the same or different knobs.

Electrical Components

  • Airspeed Switch
    Value Engineered Products
    3541 Old Conejo Road, Ste #117
    Newbury Park, CA 91320
    (805) 499-1959
    (805) 499-1955
    email: vep1@pacbell.net
    www.veproducts.com
    Part #654A53.2 set at 80 knots
  • Landing Brake Switch
    Flame Enterprises
    21500 Gledhill St
    Chatsworth, CA 91311
    (818) 700-2905
    (818) 700-9168 fax
    AN3027-8
  • Landing Gear Switch
    Flame Enterprises
    21500 Gledhill St
    Chatsworth, CA 91311
    (818) 700-2905
    (818) 700-9168 fax
    MS24659-21A
  • Master Switch
    Flame Enterprises
    21500 Gledhill St
    Chatsworth, CA 91311
    (818) 700-2905
    (818) 700-9168 fax
    MS24658-22D

Engine Components

  • Exhaust System
    Custom Aircraft Parts
    14374 Olde Hwy 80
    El Cajon, CA 92021
    800-561-1901
    619-561-5177 fax
    The six cylinder exhaust for the Berkut is part number 33803 however just requesting the item should do it. We suggest you ask for the pipes to be back-gassed which creates a cleaner weld on the inside of the tube, thus less drag. This is about $30 more and is entirely up to you.
  • Oil coolers - Engine and Cabin Heater
    Positech International
    170 N 17th St
    Wheeling, WV 26003
    (800) 367-1374
    (304) 277-4085 fax
    www.oil-coolers.com
    The Berkut 360 uses oil cooler number 4215. The Berkut 540 uses oil cooler number 4217 . The cabin heat exchanger uses oil cooler number 4211 for either the 360 or 540.
  • Engine Isolators
    available from various sources
    Berkut 360 - Barry Controls Part # 94011-20
    Berkut 540 - Barry Controls Part # 94007-01
  • Hose - fuel servo to elbow intake
    Port Supply/West Marine
    many locations in the US
    (800) 621-6885
    (800) 825-7678 fax
    sales@portsupply.com
    www.portsupply.com
    Versaflex 2 1/2" OD x 2 7/8" ID Item #443721
    This is the hose that goes between the fuel servo (Bendix or Airflow Performance) and the elbow going into the air intake box. Previously, we used orange or black SCAT tubing or an equivalent however we found this material is easily corroded by fuel which finds it way there from overpriming. When this happens the suction of air causes the tube to collapse preventing the engine from getting air and robbing it of a lot of power. This Versaflex will not do this and should hold up for a long time.

Fuel System Components

  • Fuel Caps
    available from Aircraft Spruce or Wicks Aircraft
    Spruce #05-28658 or Wicks #FF36L
    This is a light weight, glass-in fuel cap made in England. Unlike some caps, this one is nearly idiot-proof and there is no question about whether the cap is closed or not. The cap is available with a lock though I have not provided its part number. You’ll need two for the strakes and two if you choose to build the auxilary wing tanks.
  • Fuel Filter
    available from Aircraft Spruce
    Flow Ezy Fuel Filter Part#05-28905
  • Fuel Drains
    available from Aircraft Spruce or Wicks Aircraft
    Spruce or Wicks #F391-18
    These are flush mount fuel drains that are 1/8” NPT. You’ll need two for the strake tanks and two if you are building the auxiliary wing tanks.
  • Fuel Pump
    available from Aircraft Spruce
    Part #8163-A Weldon Fuel Pump
    or
    Velocity Aircraft
    200 W Airport Dr
    Sebastian, FL 32958
    (561) 589-1860
    (561) 589-1893 fax
    www.velocityaircraft.com
    Part# B-8120-J Weldon Fuel Pump
    Our previous source for fuel pumps has been Velocity Aircraft, however we have recently started recommending the Weldon Fuel Pump carried by Aircraft Spruce. Either pump will work just fine and the prices are about $30 different.
  • Fuel Pumps for aux tanks
    available from Aircraft Spruce or Wicks Aircraft
    Facet Fuel Pump Part #40105
    You will require two of these only if you are building the auxiliary fuel tanks.
  • Fuel Sight Gauges
    Vance Atkinson
    3604 Willomet Ct
    Bedford, TX 76021
    (817) 354-8064
    (817) 354-1110 fax
    email: Nostromo56@home.com
    The fuel sight gauges consist of 1/8" plastic, one white to enhance the fuel line and the other a clear bubble that is extruded from a two-piece mold. They fit over the existing space on the fuselage that the plans call for. They will fit the Vari-Eze, Long-EZ, Cozy, Velocity, Defiant, Berkut and Aerocanard. There is also a small float for easier viewing. They come with optional internal lighting and detailed instructions.
  • Fuel Sump Check Valve
    Deering Industries
    3300 Cherry Ave
    Long Beach, CA 90807
    (562) 595-1668
    Part # AN6207-8D (2 per plane)
    After receiving this part, open it and remove the tiny spring inside then reclose it and it is ready to use.

Hardware

  • Wicks Aircraft Supply
    410 Pine Street
    Highland, IL 62249
    (800) 221-9425
    (618) 654-6591
    www.wicksaircraft.com
  • Aircraft Spruce and Specialty
    225 Airport Cir
    Corona, CA 92880
    900 S Pine Hill Road
    Griffin, GA 30223
    (877)-477-7823
    (909) 372-0555 fax CA
    (770) 229-2329 fax GA
    www.aircraftspruce.com
  • Cowl Hardware
    The following parts are the 4002 series camloc hardware for the cowls. The part numbers listed below are from the Spruce catalog. Do not purchase a receptacle drill jig, you do not need it and the price is insane. Do not buy the whole saw, it is unnecessary. The 360 and 540 cowls require 16 of each of these items. If you have a 360, do not put camlocs on the trailing edge of the cowl or the area just ahead of the prop. We now recommend screws, tinnerman washers and nut plates be used instead, as they are on the 540.
    Receptacles - Part # 214-16N
    Large Area Grommet - Part# 4002-N3
    Grommet Snap Ring - Part# R4G
    Stud - Part # 4002-4, -5 or -6 (You won't know which of these you need without trying them. The Spruce catalog has instructions on how to figure this out, but even then it is not easy.)
    Camloc fastener pliers - Part# 4P3
    Snap Ring Tool - Part# T26
    Tinnerman Stainless Countersunk Washers - Part#WA10 (Buy a bag of 100)

Hydraulic System Components

  • Wheel and Brake Assembly
    Matco Manufacturing
    65 E Kensington Ave
    Salt Lake City, UT 84115
    (801) 486-7574
    (801) 486-7581 fax
    www.matcomfg.com
    WHLW5OLD
    We’d also highly recommend you buying the cap screws (part# MSC.25-20x0.75) with the heads drilled for safety wire. You can buy cap screws at a hardware store but they are a pain to drill.
  • Master Cylinders
    Matco Manufacturing
    65 E Kensington Ave
    Salt Lake City, UT 84115
    (801) 486-7574
    (801) 486-7581 fax
    www.matcomfg.com
    MC-MC-4
  • Brake Reservoirs
    Matco Manufacturing
    65 E Kensington Ave
    Salt Lake City, UT 84115
    (801) 486-7574
    (801) 486-7581 fax
    www.matcomfg.com
    Lid part # MCR-001
    Bowl part # MC8722-40L
    This brake reservoir consists of two parts, the lid and the bowl. You do not need the bracket which is also available.
  • 3-Way Gear Dump Valve
    Long Beach Valve and Fitting
    3940 Gilman St
    Long Beach, CA 90815
    (562) 494-6694
    (562) 494-0493 fax
    B-42XHS4-BKB
    The hydraulic manifold shown in the plans no longer applies. Instead the gear dump valve and two "T" fittings are used. Most people are putting the dump valve on the panel at the upper left instead of between the pilots legs, making it much easier to get to. The "T" fittings needed are as follows: AN804-4D and the bulkhead nut is AN-924-4D. The hydraulic lines come forward from the left console, through the instrument panel. The bulkhead fittings and nuts attach to a couple of 1/8" phenolic tabs (1.25" wide x 1.5" tall and stick straight out from the side of the fuselage), one lower tab about 3" ahead of the instrument panel and the upper one is about 4". The geometry of the dump valve and lines will dictate where the phenolic tabs go. Obviously you are going to need 6 B-nuts and 6 sleeves (818-4D and 819-4D).
  • Outboard Gear Door Cylinders
    Aro-tek
    301-30th Street NE, Suite 108
    Auburn, WA 98002
    (253) 833-4330
    (253) 833-4483 fax
    405-110 (2 per plane)
    If these cylinders ever start leaking, you can order the seal kit for them from Aro-Tek as well.
  • Sequence Valves
    Aro-tek
    301-30th Street NE, Suite 108
    Auburn, WA 98002
    (253) 833-4330
    (253) 833-4483 fax
    405-101 (2 per plane)
  • Main Gear Hydraulic Cylinders
    Berkut Engineering
  • Hydraulic Pump
    New Glasair
    18701 58th Avenue NE
    Arlington, WA 98223
    (360)435-8533
    (360)435-9525 fax
    www.newglasair.com
    Part # 12V-643986
    Description: 108AMS19-CLB-1VT
    New Glasair carries the pumps from the same manufacturer as we do. You must ask for our part number and please be patient because this is not an item New Glasair keeps in stock, but they are kind enough to order. Email Vicki if you need the pump or any components before calling New Glasair.
  • Hi and Lo Pressure Switches
    Whitman Controls
    201 Dolphin Road
    Bristol, CT 06010
    (860) 583-1847
    (860) 583-5293
    J705G-3-K52TS
    The low pressure switch must be set at ascending 700 psi and the high pressure switch set at ascending 1150 psi. You must specify this when ordering the switches.     This is a more expensive set of switches but the screw terminals are much nicer.

    Suco

    SUCO Inc. West Coast
    1001 East Sheridan Street
    Phoenix, Arizona 85006
    USA
    phone: 330 / 722 - 1145
    fax: 330 / 723 - 2979
    Tollfree: 800 / 473 - 7313

    SUCO Inc. East Coast
    803 East Washington Street
    Medina, Ohio 44256
    USA
    phone: 602-284-3629
    fax: 330-723-2979
    Tollfree: 800 / 473 - 7313

    www.sucoinc.com
    info@sucoinc.com
    Lo pressure switch: 0166-41604-1-064 set at 550 psi
    Hi pressure switch: 0169-42004-1-016 set at 1050 psi
    The terminals on these switches are male spades and very easy to connect. These switches are considerably less expensive than the Whitman Controls and are our preference, though there can often be a wait for them.
  • Swagelok Female Bulkhead Fitting: Upper Gear Casting Brake Line Fitting
    Long Beach Valve and Fitting
    3940 Gilman St
    Long Beach, CA 90815
    (562) 494-6694
    (562) 494-0493 fax
    SS-200-71-2 (2 per plane)
  • Swagelok Bulkhead Fitting: connects 1/8” ss line to AN-4 flex line
    Long Beach Valve and Fitting
    3940 Gilman St
    Long Beach, CA 90815
    (562) 494-6694
    (562) 494-0493 fax
    SS-200-61-4AN (8 per plane)
    **Note this is not an easy part to find, but you can substitute Swagelock part number SS-200-71-2. This will require an 1/8" pipe to -4 AN fitting that you can easily get from Aircraft Spruce in a straight, 45 or 90 as required.
  • Swagelok Male Elbow: sequence valves and gear brake line
    Long Beach Valve and Fitting
    3940 Gilman St
    Long Beach, CA 90815
    (562) 494-6694
    (562) 494-0493 fax
    SS-200-2-2 (6 per plane)
  • Swagelok Male Connector: Brake Caliper Coiled Flex Connectors
    Long Beach Valve and Fitting
    3940 Gilman St
    Long Beach, CA 90815
    (562) 494-6694
    (562) 494-0493 fax
    SS-200-1-2 (4 per plane)
  • Hoses and Fittings
    Earl's Performance Products
    15827 Hawthorne Blvd
    Lawndale, CA 90260
    (310) 644-0881
    (310) 644-6475 fax

    -4 Steel Braided Hose; part#60004; 20 feet
    -4 Straight AL Hose End; part#600134; 16
    -4 45 Degree AL Tube; part#604734; 2
    -4 90 Degree AL Tube; part#609234; 6
    We use these materials in the wheel well (see photo) and hell hole. The material is easy to work with and you cut the hose to the length you need.
  • Stainless Steel Line
    Stainless Pipe and Fitting Supply Company
    14944 Showmaker Ave
    Sante Fe Springs, CA 90670
    (562) 921-9779
    (562) 921-9784 fax
    Item: Stainless Steel Tube 0.125 x 0.020 316 seamless
    A standard length of this material is 20 feet. This company requires a minimum order of $25 which is covered by one length of the material.Twenty feet will do the job but do not waste it or you'll need another length. Before you cut this material, use some welding rod to get the bends you want then shape the stainless line and cut it to avoid mistakes and the need for more material.
    The approximate length requirements are as follows (again do not cut this length before you apply it to your application):
    Inboard bulkhead fitting to the sequence valve: 26.5" x 2
    Inboard bulkhead fitting to the outboard gear door cylinder: 36.5" x 2
    Along the length of the gear leg: 43" x 2
    Brake line curl: 14" x 2
    NOTE: You may use 0.187" or 0.25" tubing, if you have the room between the gear leg and the gear leg depression.

Ken Brock Parts

  • Ken Brock Manufacturing
    11852 Western Avenue
    Stanton, CA 90680
    (714) 898-4366
    (714) 894-0811 fax
    www.kenbrockmfg.com

Miscellaneous

  • Berkut Luggage
    Para-Phernalia
    19124- 59th Dr NE, Bldg #4
    Arlington, WA 98223
    (800) 877-9584
    (360) 435-7272 fax
    info@softieparachutes.com
    www.softieparachutes.com
    In addition to producing a great parachute, Para-Phernalia produces some great Berkut luggage for the strakes in the form of their standard parachute carry-all bag. The parachute bags conform to the strakes to allow you to stuff the bag completely into the strakes. They will hold a lot of clothes and are available in a number of colors. We'd suggest requesting handles attached to both ends so the bags may be easily pulled in and out of the strakes. Sizes also vary depending on the bag chosen but generally are about 13" wide by 2.25" thick and vary in length from 21" to 35". Embroidery is also available.
  • Harness
    Silver Parachute
    P.O Box 6092
    Hayward, CA 94540-6092
    (510) 785-7070
    (510) 785-9213 fax
    silver@pia.com
    www.pia.com/silver
    The 5-point harness used in a few Berkut's is the Acrobelt from Alan Silver. Take a look at the site, under the heading Acrobelt and there should be all the information you need for ordering the belt. Though the Acrobelt indicates it is a ratcheting system, Mr. Silver knows the ratchet is not used in the Berkut and he can make the belt without the ratchet.
  • Pitot Tube Heating Element
    available from Cessna dealers or Cessna parts dealers
    Part# 0721105-5
    This is the heating element for the heated pitot tube. Dave manufactures the tube and will provide instructions on installing it and the heating element. This particular one is for a 12V system. A 24V system would use the same part number but with a -9 at the end.

Nose Gear Components

  • Nose Gear Strut
    Featherlite
    P.O. Box 781
    Boonville, CA 95415
    (707) 895-2718
    Long-EZ nose strut

Oxygen Systems

Props

  • Props Inc
    354 SE 2nd St
    Newport, OR 97365
    (541) 265-3032
    www.propsinc.net
    This is a relatively inexpensive prop and is a nice one to have as a spare. It is only available for the 540 engine combination.
  • Catto Propellers
    15301 Jesus Maria Road
    Mokelume Hill, CA 95245
    (209)754-3553
    (209)754-3554 fax
    email: Craig@cattoprops.com
    www.cattoprops.com
    Props are available for the 360 and 540-2 or 3 blade.
  • Prop Extension
    Sabre
    3601 Nassau Court
    Granbury, TX 76049
    (817) 326-6293
    (817) 326-6330 fax
    Berkut prop extension for 360 or 540
    The Berkut prop extension for both the 360 and 540 is 8" in length. You will also need to order the 7" crush plate with 1/2" holes.
  • Spinner bulkhead
    Kit Components (Lancair)
    2244 SE Airport Way
    Redmond, OR 97756
    (541) 923-2244
    (541) 923-2255 fax
    Part#10031-2 Plate Spinner Backup SAE #2

Raw Materials

  • Aircraft Spruce and Specialty
    225 Airport Cir
    Corona, CA 92880
    900 S Pine Hill Road
    Griffin, GA 30223
    (877)-477-7823
    (909) 372-0555 fax CA
    (770) 229-2329 fax GA
    www.aircraftspruce.com
  • Wicks Aircraft Supply
    410 Pine Street
    Highland, IL 62249
    (800) 221-9425
    (618) 654-6591
    www.wicksaircraft.com

Resins and Epoxys

  • Aircraft Spruce and Specialty
    225 Airport Cir
    Corona, CA 92880
    900 S Pine Hill Road
    Griffin, GA 30223
    (877)-477-7823
    (909) 372-0555 fax CA
    (770) 229-2329 fax GA
    www.aircraftspruce.com
  • Wicks Aircraft Supply
    410 Pine Street
    Highland, IL 62249
    (800) 221-9425
    (618) 654-6591
    www.wicksaircraft.com
  • West Systems Resins and Hardners
    Port Supply/West Marine
    many locations in the US
    (800) 621-6885
    (800) 825-7678 fax
    sales@portsupply.com
    www.portsupply.com
    West 105 Resin and 205 and 206 Hardner
    This is a large marine supply company that is convenient to use for ordering West Systems materials. They distribute from the west and east coasts and have good prices on the materials.
  • West Systems Resins and Hardners
    Gougeon Brothers
    P.O. Box 908
    Bay City, MI 48707
    (517) 684-7286
    West 105 Resin and 205 and 206 Hardner
    This is the manufacturer of this resin system. You can find it at most marine supply companies, as well as Aircraft Spruce and Wicks.
  • Gougeon Brothers
    P.O. Box 908
    Bay City, MI 48707
    (517) 684-7286
    Pro-Set 175 Resin and 277 Hardener
    This is the material we use to bond the canard, wing and strake skins. You will need to purchase the applicator gun for it as well. You will need 3 tubes per wing, 2 tubes for the canard, and 1 per strake.
  • Jeffco Resins and Hardners
    Jeffco Products
    5252 Kearny Villa Way
    San Diego, CA 92123
    (800) 573-7699
    (858) 576-7093 fax
    Jeffco 1307 Laminating Resin and 3102 Fast Hardner or 3103 Medium Hardner
  • Jeffco Fuel Tank Sealant
    Jeffco Products
    5252 Kearny Villa Way
    San Diego, CA 92123
    (800) 573-7699
    (858) 576-7093 fax
    Jeffco 9700 Parts A and B (A-Epoxy Novolac Coatings System and B-Hardner)
    We prefer ordering this material from the manufacturer because we can get it in smaller quantites than we have found available through the aircraft supply companies.
  • Epoxy Pump
    Michael Engineering
    4997 S Crawford Rd
    Mount Pleasant, MI 48858
    (517) 772-4073
    (517) 772-3500 fax
    You will order the correct ratio pump based on which resin system you use.

Springs:

  • Century Spring
    222 E 16th St
    Los Angeles, CA 90015
    (800) 237-5225
    (213) 749-3802
    www.centuryspring.com
    Century Spring is the manufacturer of thousands of springs. You will often find a huge collection in a number of hardware stores however the hardware store springs have different numbers than the springs bought directly from Century Spring even though they are the same spring. For some springs such as this one, there is no hardware store equivalent. I have also included the technical information for the particular spring so you can shop by size if your hardware store doesn't carry the Century brand, however you may not be able to find the exact spring size and you'll have to get it from Century. Century Spring will accept credit cards but they do have a $30 minimum order.
    • Pitch Trim Spring - 11982 (2 per plane)
      Compression Spring 0.875 OD; 0.671 ID; 8.22" length;0.102 wire diam
    • Rudder Return Springs - 213 (C-231 is the hardware store equivalent) 2 per plane
      Extension Spring 0.562 OD; 6" length; 0.072 wire diam
    • Main Gear Lockdown Springs - 873 (2 per plane)
      Compression Spring 1.0 OD; 0.790 ID; 8" length; 0.105 wire diam
    • Nosewheel Door Spring - 124 (C-319 is the hardware store equivalent) 1 per plane
      Extension Spring 0.562 OD; 8.5" length; 0.054 wire diam
    • Rudder Cable Compression Spring - S3035 (1 per plane)
      Compression Spring 0.75 OD; 13.4" length; 0.105 wire diameter
    • Aileron Roll Trim Springs - B5-47 (2 per plane)
      Extension Spring 0.5 OD; 4" length; 0.055 wire diameter

Tires and Tubes

  • Main Gear Tires
    Aircraft Spruce and Specialty
    11.400-5 (8 ply) Tire: Part# 06-07500
  • Main Gear Tubes
    Aircraft Spruce and Specialty
    11 x 4.00-5 Tube: Part #06-07600
    These are the Chen Shing tubes and the quality appears to have changed since we started using them. The problem is that the inner diameter of the tube extends beyond the inner rim of the tire and is not flat, but wavy, resulting in a tendency for the tube to get pinched when you put the wheel halves together. We have found a supplier with a much better tube that does not have the bad characteristics of the Chen Shing tube. They are a little more expensive but definitely worth it.
    Northern Tool and Equipment
    Burnsville, MN 55337
    (800) 533-5545
    11 x 4.00-5 Tube: Part #13459
    These are Deli tubes and are a much better choice than the Chen Shing tubes.
    They run about $7 each.
  • Nose Gear Tire
    2.80 x 4 Tire
    There is no specific manufacturer for these tires but McCreary makes this size and it is available from Aircraft Spruce and Wicks.
  • Nose Gear Tube
    2.80 x 4 Tube
    There is no specific manufacturer for these tubes but McCreary makes this size and it is available from Aircraft Spruce and Wicks.

Tools

  • Fein Saw
    www.amazon.com
    This is the best place we have found yet for ordering this tool and the replacement blades.