Shuttle UpgradesI know you may not want to hear this, but it will cost you more to upgrade your used Shuttle then it will to purchase a more current design new.
I learned on a Shuttle and always had a soft spot in my heart for it. Consequently I have upgraded it to somewhere between the expensive RG and the less expensive ZXX. Unfortunately I have spent three times more on it then what it cost me for a new Hawk SE which outflys it, is less maintenance, is less expensive to repair, has a better clutch system, has a better rotor head, has a better tail rotor, comes with better mainblades (Fiberglass/Graphite composite) etc. etc.
Now my expensive Shuttle just sits in my workshop as I never fly it anymore and the price I could get for it is nowhere near what I have invested into it, so it is very difficult to sell.
To just bring the Shuttle closer to the standard of the Hawk SE, here is an example of what one would have to purchase:
1 - Fiberglass blades - $60.00
2 - Full metal swashplate - $70.00
3 - Rotor head with 6mm spindle and thrust bearings - Not Available for the Shuttle, but estimated cost would be - $100.00
4 - Full bearings everywhere - $40.00
5 - Metal ball joints on the servo arms - $15.00
6 - Triple bearing tail rotor - $45.00
7 - Swashplate radius control - $20.00
8 - Servo frame stiffeners (to keep the Shuttle servo frames from flexing under load which the Hawk servo frame does not do) - $30.00
Just these 8 items add up to more ($380) then the price of a new Century Hawk SE ($329). In fact you can do the same comparison with just the Hawk IV with the $20.00 bearing upgrade (only $240) and find the
1- swashplate (ZXX) - $50.00
2- Rotor head - $85.00
3- Full bearings - $40.00
4-Servo frame stiffener - $30.00
5- One piece CNC machined muffler - $40.00
Just these add up to ($245) more then a new Hawk IV with the bearing upgrade.
Even assuming that you could sell your Z-TS to someone for only $100.00, when you apply that against the purchase of the Hawk SE or the IV, the deal makes even more sense.
I am using the Hawk as an example here because I have found them to be the best value on todays market, but rather then going the upgrade root on your Shuttle, you would be well advised to sell it and use the money towards any of the more modern helis. If you insist on staying with Hirobo, then you could do a similar comparison with the Sceado 30.