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To my way of thinking a Pitts should spend 1/4 of the time up right, 1/4 of the time in left knife-edge, 1/4 of the time inverted and 1/4 of the time in right knife-edge.
('Konrad' [Seen on RCGroups.com])
 
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Aircraft Products
Flying Wires - Brought to you by Bruntons Aero Products

Bruntons Aero Products Logo

Bruntons Aero Products Ltd. has been developing the art of flying wire manufacturing since 1909, six years after the Wright Brothers. Their quality is known and respected throughout the aviation industry worldwide. Steen Aero Lab is proud to be the North American distributor for Bruntons Aero Products. (More about Bruntons)

Streamline Wires and Tie Rods are used for internal or external bracing on aircraft (wings, tail surfaces, undercarriages, floats etc.)... wherever a load in tension must be carried.

Streamline Wire and Tie Rod Features

A collection of round and streamline flying wires Bruntons works hard to ensure that their products represent the high level of quality that is expected for flight-critical aerospace applications:

  • All wires (tie rods) are made from 316 Stainless Steel, and all terminal hardware is made from 6S80 Stainless Steel, for the ultimate in corrosion resistance.
  • All wires and rods are produced from ground bar, which is either cold drawn (tie rods) or cold rolled (streamline wires) to produce the required strength, toughness and ductility.
  • Threads on the wires are rolled, which is stronger than traditional cut threads.
  • Wires are available in either a high-polish mirrored finish (AN Specification) or satin finish.
  • Wires are available in BSF or metric thread, for absolute authenticity for that antique restoration.
  • You can order wires with combinations of streamline and round cross-sections.
  • All wires are tested to 100% of their designed load before leaving the factory.
  • Wires ordered with terminals are supplied assembled.
  • Every order includes a quality certification.
  • All wires are specially produced for each customer. You will get exactly what you need.

Special Streamline Wires

Streamline wires can be supplied with non-standard length round portions, or with round center sections between two streamlined sections. When non-standard streamline wires are required, orders should be accompanied by drawings and/or detailed specifications where possible.

Ordering

Every set of wires or tie rods is custom-made to your requirements. To order, the following information is essential:

  • Type: Streamline Wire of Round Tie Rod
  • Length: Lengths should be quoted in either inches or millimeters. Please specify whether the length given is Rod Length (R.L.) or Pin Center Length (P.C.L.)
  • Terminals: Please specify if terminals are required with your streamline Wires / Tie Rods. If terminals are required, they will be selectively assembled at the factory to ensure a perfect fit. All fitted terminals will be supplied complete with clevis pins, split pins and locknuts. All terminals are manufactured from stainless steel.

Please take time to double-check all measurements. Due to the fact that every wire set is custom-made, unfortunately we are unable to provide refunds for wires produced according to incorrect measurements provided by the customer. If in doubt, please call Steen for assistance in determining the proper way to measure for your wires.

(We do offer a complete wire set for the Skybolt which will fit properly on a plane which has been built to the plans. Contact us for more details.)

TIE ROD NOTES
  • Material is 316 Stainless Steel cold rolled to final shape.
  • Diameter of Streamline Wires is measured at the round section near the threads.
  • Diameter of Round Tie Rods is measured at the square section near the threads.
  • Threads are national fine, class 3 medium fit.
  • Thread lengths on Tie Rods are AN spec, alternate design.
  • Special thread lengths are available.
  • K is the difference between pin center length (PCL) and rod length (RL) in inches.
  • When specifying dash numbers, use rod lengths only in inches and hundredths:
    EXAMPLE: AN675AC-11875 defines a 5/16"-24 Streamline tie rod, alternate design, 118-3/4" rod length.

STREAMLINE TIE RODS
How to measure your tie rods
AN NUMBER Size &
Thread
Diameter
(Inches)
Thread Length (Inches) K Min. Strength
(lbs.)
RH LH
AN671AC- 6-40 .138 1-3/4 1-1/4 1-1/4 1,200
AN673AC- 10-32 .190 1-7/8 1-3/8 1-1/2 2,400
AN674AC- 1/4-28 .250 2-1/8 1-5/8 1-7/8 4,200
AN675AC- 5/16-24 .3125 2-1/4 1-3/4 2-1/8 6,900
AN676AC- 3/8-24 .375 2-3/8 1-7/8 2-1/4 10,000
AN677AC- 7/16-20 .4375 2-5/8 2-1/8 2-1/2 13,700
AN678AC- 1/2-20 .500 2-7/8 2-3/8 2-7/8 18,500
AN679AC- 9/16-18 .5625 3-1/8 2-5/8 3-1/4 24,000
AN680AC- 5/8-18 .625 3-3/8 2-7/8 3-1/2 29,500
AN682AC- 3/4-16 .750 3-3/4 3-1/4 4-3/8 42,000
** See Notes (above)

ROUND TIE RODS
How to measure your tie rods
AN NUMBER Size &
Thread
Diameter
(Inches)
Thread Length (Inches) K Min. Strength
(lbs.)
RH LH
AN701AC- 6-40 .138 1-3/4 1-1/4 1-1/4 1,000
AN703AC- 10-32 .190 1-7/8 1-3/8 1-1/2 2,100
AN704AC- 1/4-28 .250 2-1/8 1-5/8 1-7/8 3,400
AN705AC- 5/16-24 .3125 2-1/4 1-3/4 2-1/8 6,100
AN706AC- 3/8-24 .375 2-3/8 1-7/8 2-1/4 8,000
AN707AC- 7/16-20 .4375 2-5/8 2-1/8 2-1/2 11,500
AN708AC- 1/2-20 .500 2-7/8 2-3/8 2-7/8 15,500
** See Notes (above)

TERMINALS, THREADED CLEVIS TYPE
How to measure terminals
AN665 TERMINALS
Dash
No.
Rated Tie
Rod
Strength
Min. (lbs.)
Tap
T
Drill
A
B
±.015
D Dia.
+.003
-.000
F
+.010
-.000
G
+.010
-.000
H I
+.010
-.000
M Dia.
+.010
-.000
S
Dia.
U Y
±.047
Z
10L
10R
1,200 6-40 .147 1.313 .190 ** .250 .109 .375 .031 .250 .375 .625 .250 .313
21L
21R
2,400 10-32 .199 1.531 .190 ** .313 .150 .469 .031 .281 .500 .719 .313 .375
34L
34R
4,200 1/4-28 .261 1.813 .250 .438 .203 .625 .047 .375 .625 .875 .438 .500
46L
46R
(a) 4,600 5/16-24 .323 1.875 .313 .500 .203 .656 .047 .438 .688 .938 .563 .625
61L
61R
6,900 5/16-24 .323 2.000 .375 .563 .203 .844 .063 .453 .750 1.000 .563 .625
80L
80R
10,000 3/8-24 .386 2.250 .375 .563 .266 .875 .063 .547 .875 1.125 .688 .750
80LA
80RA
10,000 3/8-24 .386 2.250 .375 .625 .266 .875 .063 .547 .875 1.125 .688 .750
115L
115R
13,700 7/16-20 .453 2.500 .438 .719 .344 1.000 .078 .625 1.063 1.250 .750 .813
155L
155R
18,500 1/2-20 .516 2.813 .500 .813 .406 1.188 .078 .703 1.188 1.438 .875 .938
202L
202R
24,000 9/16-18 .578 3.125 .563 .922 .453 1.375 .094 .796 1.375 1.625 1.000 1.063
247L
247R
29,500 5/8-18 .640 3.375 .625 1.032 .516 1.500 .094 .875 1.500 1.750 1.125 1.188
430L
430R
42,000 3/4-16 .766 4.125 .750 1.250 .656 1.938 .109 1.063 1.813 2.250 1.375 1.438
NOTES:
** Tolerances: +.002 -.000 for .190 dia. only
(a) Special for AN675 rod with 4600 lb. rating.
  • Material is 6S80 Stainless Steel, satin finish. (MIL-T-5683)
  • Tolerances:
    Fractions ± 1/64
    Decimals ± .010
    Angles ± 1/2 degree
  • When specifying use dash numbers:
    Example:
    AN665-61L defines a 5/16-24 terminal, 6900 lb. rating, L.H. thread.

 


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