Builder Assistance

This series of pictures shows how to split the tub - the lower body of the helicopter.
Splitting the tub is one of the best modifications you can do because it makes construction easier and future maintenance, inspection or mods to the lower forward parts far easier.

Tub Split

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This is the first of the new series of "Technique Pages"

The complete tub before work begins.

We start by giving us a line to work to as we need to work from the inside to put the join in before we split the tub.

Here we see I have already set out the screw hole keeping in mind you need to miss the undercarriage spats and the floor pan.

 

Don't cut all the way through as we want to drill the cleco holes prior to final separation

 

 

 

You get the whole picture here. We are now ready to prepare the inside for glassing the joggle and this step is crucial for a good bond. This is an FA series two chopper, the extra tub scoops come standard in Australia.

 

 

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I use a die grinder for this job and clean all the wax off with acetone and do it at least two times to make sure as the bond will be affected if you don't.
As always, I like to do a job just once, it save so much time and frustration. This will be the fourth tub I have split this year... One day I might get good at it LOL

 

This is really the best bit.
The duck tape is available everywhere but you must cut it and put it on in a relaxed state or it will pull off the panel as it shrinks. So cut it to length before you put it on the panel.

 

I use shuffler Epoxy resin and 3 oz glass cloth but you can use polyester resin if you can put up with the stink. The epoxy bonds very well as long as you prepare the surface correctly.

 

 

All done but drill the holes before you make the final cuts and split the tub look just great and you'll be so happy that you took the extra time to do this job as it will save you days not hours in the build and servicing.

 

This job is done prior to splitting for the first time. We have only one more job to do - fill the cut line

Here we use the duck tape again to fill the cut line. It just makes the final job look so good and no more gaps.

 

   

I use shuffler resin and Qcells as a filler. It's very light and easy to sand, this really is all it takes.

Should you have any questions e-mail me or give me a ring.

       
   

 

   
   

 



 

 

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