I created a number of items to upgrade my Aviator Pro 40 ARF from Value Hobby: http://www.valuehobby.com/airplanes/almost-ready-to-fly/aviator-pro-40-red.html
The items included are:
- Patterns for side window decals in both PDF and SVG formats.
- Aileron cable clip - glue to top of wing saddle bulkhead to manage aileron extension(s)
- Wing bolt guide - glue over rear wing holdown tee nuts to guide wing bolts when mounting wing
- Battery stop & retainer - I used a Turnigy 6S 3300 Lipo; it had to be mounted just ahead of the servos in order to achieve correct balance. There isn't a great way to keep it from sliding forward in that location, so I designed this part. The bottom clips over the main bulkhead, and the retainer anchors it to the top deck under the windshield. You'll notice the pictures are a little different than the STL; the stop came loose from my bed about 2/3 of the way thru the print so I aborted it, but the part works just fine so I didn't bother printing the full part. If you print the full part use 2 retainers.
Also see my XT60 arming safety plug.
Happy landings!