The retractable landing lights are now provisionally installed....one on each wing, just outboard of the engine nacelles. I am using 12volt mini halogen bulbs (20watt) that are easily available from DIY stores.. I'll have a 12v NiMh (4000mAh) battery pack drive both of these with a brushed speed controller as the 'on-off' switch. I should get just over 1 hrs operation from one charge...which should be more than enough for a weekends flying.
To start with I made a little sketch to get the shape of the offset hinges just right before transfering it onto some 1.5mm paxolin sheet.
- 100_5323 [s].JPG (38.54 KiB) Viewed 19808 times
I tacked four laminations together and cut them all out on the scroll saw.
- 100_5324 [s].JPG (36.6 KiB) Viewed 19808 times
I made up a small set of parts for each landing light...which will use the brass tube as a torque rod. That way I can get the light servo under the same hatch as the outer flap servo.....saves time and strength!
- 100_5325 [s].JPG (34.62 KiB) Viewed 19808 times
A lite-ply base is glued between the ribs with a smaller square of lite-ply to locate the light unit. This smaller square will be the part of the final sheeting..I thought it was easier to get the sheeting to fit around the square than around the light....
The whole assembly has now been tacked into place with cyano....tonight I'll go around everything with a bit of hysol and fit some locking pins through the brass tube to stop things from ever coming loose.
- 100_5326 [s].JPG (41.43 KiB) Viewed 19808 times
The light in the retracted position....
- 100_5328 [s].JPG (40.73 KiB) Viewed 19807 times