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Mantis Z Arm

Assembly

Guide

Vulcan MutliFrame

Mantis

Z Arm Assembly Guide
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Mantis Z Arm

Assembly

Guide

Thank you for purchasing the Vulcan Multiframe

Mantis

The MultiFrame is a very strong, light, durable airframe, and is very 

straightforward to assemble.

Please follow these build instructions carefully, and we wish you 

many hours of safe and enjoyable flying!

SAFETY NOTICE

Multicopters can be dangerous and pose a significant risk of injury and 

damage to property. Always take all necessary safety precautions to avoid 

damage or injury to yourself and those around you!

Never fly near or over buildings, roads or people.

Always ensure you have plenty of space to fly with an uninterrupted view of 

your machine at all times.

Always stay well clear of moving propellers.

Before flying, always check your machine carefully.

Ensure all nuts, bolts and linkages are tight and cannot come undone.

Check your propellers are securely tightened, have no chips, cracks or dents 

and if they do, replace them as necessary.

Ensure all electrical connections are secure with good contacts, well insulated and cannot come apart.

Make sure all onboard equipment such as batteries, cameras or any other 

payload is properly and securely attached and cannot come loose, shake, 

vibrate or move around during flight.
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Mantis Z Arm

Assembly

Guide

Vulcan Mantis Z Arm Assembly Guide

The Mantis airframe is assembled exactly the same as a standard frame, the only difference 

between a standard frame and the Mantis, is the use of the Z arm.

This type of arm raises the motor and gives an uninterrrupted clear forward view for the 

camera without props appearing in the shot, even during fast forward flight. It also is a great 

pilot aid, helping with machine orienataion in the air, a notoriously difficult issue for multirotors.

No special flight controller setup is required when using Z arms, and they are a ‘straight 

swap’ upgrade for existing Multiframes.

Arms are available in black or red anodized finish, and come in 350mm or 440mm lengths. 

The 350mm Z arm is identical in length to the standard arm in a 900mm frame. A standard 

1200mm frame uses 500mm arms, but the 440mm Z arm can be fitted to a 1200mm frame 

without detriment to flight characteristics, there is no need to chnage your existing 500mm 

arms. 440mm standard arms are also available giving a frame diameter of 1080mm and 

perfect symmetry of the frame.
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Mantis Z Arm

Assembly

Guide

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Once your motor wires are properly protected, fit the motor to the motor mount. Do not use 

motor mounting bolts longer than 8mm and use a washer.

Next you need to thread the motor wires through the arm itself. This is not easy with the 

bends in the arm, so we recommend using something flexible like string with a small weight 

on one end, and the other end tied to the end on the motor wires. See below.

Parts

Included with the arm itself are four brace plates, one for each side of the welded joints, and 

eight 25mm bolts with Nylock nuts and washers to secure them.

IMPORTANT!

Never use the Z arm without the brace plates properly fitted. They not only provide extra strength and security for the welds, but also add aditional stiffness to the arm and help 

minimise vibration and sideways flex.

Always protect your motor wires at the points where they go over the bends in the 

arm. We also recommend protecting wires where they pass any bolts and enter or exit the 

arm itself. This is very important, as if the wires move around (which they can), it is possible 

that over time the soft silicone covering on your motor wires could wear through and cause 

a short with potentially catasrophic results! Safety first always!
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Mantis Z Arm

Assembly

Guide

Drop the weighted end of the string through the arm and tie the other end to your motor 

wires. Carefully help the motor wires through the arm by pulling on the string and moving the 

wires themselves at the top of the arm. DO NOT pull hard on the string! You may damage 

the connectors on your motor wires.
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Mantis Z Arm

Assembly

Guide

Once the wires are through the arm, remove the string and attach the motor mount and motor to the arm. DO NOT overtighten motor mount bolts!

Next you must fit the brace plates over the welds, one either side. These holes can be tight 

and bolts hard to align, but by turning the bolt you can use it to cut a tight fit in the carbon of 

the plate and aluminium of the arm.

IMPORTANT!

Ensure the two bolts on the inside of the bend in the arm go under the motor wires. By doing 

so you will help protect the wires from rubbing on the sharp edge of the inside of the bend, 

as they will rest on the bolts themselves.

Once all four bolts are in place, fit washers and nylock nuts to the other end and tighten.

DO NOT overtighten or you risk damaging the arm! 

Repeat the process for both bends in the Z arm.
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Mantis Z Arm

Assembly

Guide

That’s it, you’re done! 

You can now fit the arm to your machine, please see frame assembly guide.

Disclaimer: As the assembly, care and circumstances of use of our products are completely beyond our control, VulcanUAV Ltd and it’s associates, partners, officers, employees and assignees, remain completely harmless and free of liability 

or responsibility for any damage, harm, or claim arising from the purchase, assembly, use or misuse of any product(s) purchased from, or supplied by us. VulcanUAV Ltd makes no claim of guarantee, warranty or any other claim, expressed 

or implied, that any item supplied is suitable for any purpose, including the intended purpose. Furthermore, nothing said, written or implied by any person connected with VulcanUAV Ltd shall invalidate any of the preceding disclaimer. The 

user assumes all liability for all potential damages or claims that might arise from the use, purchase or handling of any items supplied by or purchased from VulcanUAV Ltd.