Losmandy Porta-Jib Standard Assembly Instructions

Standard Porta-Jib Assembly Instructions
1.! If using our Light Weight Tripod, the Porta-Jib must be equipped with either our Light Weight Tripod Base or our
3-Way Leveler. Drop the Main Center Assembly into the Tripod's 6" top and secure by tightening the 3 Locking knobs.
Skip instructions 2 and 3 and proceed to step 4.
2.! For Jibs using the Mitchell or 150mm Base, the tie down assembly (1) consists of a 3/8-16 threaded rod (1a), a
washer (1b), and a threaded knob (1c). Thread the 3/8-16 rod (1a) into the base of the Main Center Assembly (2).
No tools required, finger tight is enough.
! (Note: some confusion occurs with customers who are used to seeing the tie-down assembly of a fluid head as a fixed
assembly where the 3/8-16 threaded rod is pinned into the knob. They are accustomed to mounting the bolt into the
bottom of their fluid head by turning the entire assembly of knob, washer, and threaded rod. Our system does not
work this way. If the threaded rod is in our knob, turning the knob does not turn the rod. One may think he is securing
the Main Center Assembly to the tripod or dolly, when in fact he may only engage a thread or two for his efforts.
This mistake can be very dangerous.)
! To repeat: thread the independent 3/8-16 rod (1a) into the base of the Porta-Jib's Main Center Assembly (2).
3.! Position the Main Center Assembly (2) onto the Mitchell plate (or 150mm bowl if you have a 150mm based Porta-Jib)
of your tripod or dolly. (Note: the Boom Lock Arm (11) will be pivoting freely as you handle the Main center assembly.
Avoid pinching fingers.) From below the Mitchell plate, connect with the 3" washer (1b) and tie down knob (1c).
4.! Check the bubble level on the Main Center Assembly, and level the tripod accordingly. It is much easier to adjust it
now, rather than later after the jib is built.
5.! Locate the 3" diameter Main Tube (3), along with 1 Through-Pin (4), and 1 MainTube Clamp (5). Place the Clamp on
one end of the Main Tube between the through-holes and the end of the tube. Slide the Main Tube onto the Main
Center Assembly's pivoting 3" post, and secure with the Through-Pin. Tighten the MainTube Clamp.
6.! Locate the 1" diameter Secondary Arm (6), and the 2 Locking Knobs (7). (Notice that the Secondary Arm is two pieces
threaded together. This allows you to change the overall length of the arm, which is used to level the front plate.)
Attach the 1.25" Diameter Secondary Arm to the 1.25" pivoting post of the Main Center Assembly and secure with a
Locking Knob.
7.! Locate the Main Front Assembly (8), 1 MainTube Clamp (5), and 1 Through-Pin (4). Slide the Tube Clamp onto the
end of 3" Main Tube. Slide the pivoting 3" Post of Main Front Assembly into the 3" Main Tube, and secure with the
Through-Pin. Tighten the Tube Clamp.
8.! Connect the Secondary Arm (6) to the Main Front Assembly's pivoting post and secure with a Locking Knob (7).
! At this point you are temporarily finished with the front section of the Porta-Jib. You will adjust the length of the
Secondary Arm after you have added your pan-tilt head and camera.