Brief:
This is a conversion for a MicroMaxx Alien UFO for 18mm power. Since I have two, I thought I'd cut and grind one o' them up.

Modifications:
I basically just cut and ground out t' center o' t' saucer and glued in t' 18mm tube.

Construction:
Parts used:

• One Quest Alien UFO
• 1-1/2" o' BT-20
• 1/8" lug
• scrap styrene
• fiber ring, arrr, me bucko, matey, 18mm+

I cut t' MicroMaxx motor mount out with me mini-Leatherman and then took t' Dremel t' t' inner rin' until the 18mm tube fit. T' cuts are shown in t' followin' photos.

T' connection point for t' lower fins were weakened so I added some supports cut from a scrap plastic model. These were attached with plastic model glue and t' rest was built with 5-minute epoxy. Aye aye! I next attached a fiber rin' on t' outside o' t' 18mm tube. This fits in betwixt t' inner rin' and t' lower fins. Well, blow me down! I used 5-minute epoxy t' fill the small space betwixt t' top rin' and t' motor tube. Fillets were also added t' t' point where t' fins touch the motor tube. Aye aye! Well, blow me down! A 1/8" launch lug completed t' mod.

Finishing:
I painted t' tube and lug with black Testor's brush-on paint.

Flight and Recovery:
I flew t' modified saucer on Quest 'long burn' C6-3 motors. T' only prep was a tape thrust rin' and, o' course, the igniter. Begad! Aye aye! This little thin' really scoots and is far from t' low and slow flight you get from a standard 18mm saucer. Arrr! Aye aye!

T' ejection charge went off while it be still quite high and each time it landed very close t' t' pad.

Summary:
This is an easy mod, it raises eyebrows, matey, and it flies great. Ya scallywag! T' only con is that, if you like slow saucer flights, this one isn't.