Arm Replacement Guide

Posted on June 10, 2013

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Whilst the QuadH2o is very strong, should the unfortunate happen and you experience a hard crash landing, damage may occur.

Replacement of most parts is self explanatory, however we felt customers would benifit from a quick ‘users guide’ to replacing a QuadH2o Arm Kit.

TIP: Read this guide IN FULL before you start :).

1. Tools for the job

Below is an overview of the recommended tools required to replace a QuadH2o arm:


  • Hacksaw
  • Dremal (optional)
  • Sand paper / sand block
  • Small flat screwdriver
  • Course round file
  • Pin nose pliers
  • Slow curing epoxy (3hour minimum)

2. Remove broken arm

Firstly, remove the motor and cables from the arm. Then carefully cut the arm just outside of the joint (say about 3mm):



2. Remove bonded material

Using a small screwdriver, carefully pry the remaining arm material inwards from the main body. Be sure to prise ‘inwards’ so to as avoid damaging the body paintwork.

TIP: Take your time and avoid using too much force.


2. Prepare body arm socket

Now to prepare the arm socket for the new arm. Carefully file the opening in order to remove any remaining arm fibre or epoxy. Once that is complete you can use a sanding block to square up the edges.

TIP: The new arm should be a ‘light push fit’. Periodically check the new arm in the socket until you achieve the desired result.



2. Ready for bonding

The body arm socket should now be ready for bonding. The new arm should be a ‘light push fit’.

Before bonding the arm it is important to ensure the arm is fixed in line with the existing arms. This can be achieved in several different ways (measurements in relations to the other arms, or even a home made alignment jig) but ensuring the arm is aligned correctly (in relation to the other arms) is key.

Once you are ready to bond your arm, carefully apply your epoxy resin to both the arm and the body arm socket surfaces. Fit your arm and ensure alignment is correct and suitable support is in place to ensure the arm cannot move whilst the epoxy cures.

TIP: Do not use quick drying epoxy! Not only will this not cure as well, a slow drying epoxy will allow you some time to correctly position the arm.

TIP: As a minimum we advise a Epoxy resin of AT LEAST 3 hours curing time.


Remember: Take your time. Don’t use force.