I got turned on to this on the Piccolo (electric heli) BBS.... the Germans are experimenting with using motors salvaged from dead CDROM drives. Thefaster CDROMs have nine pole brushless motors that are relatively easily converted to electric flight. Supposedly, the motors from 32X and faster CDROM drives have magnets that are powerful enough for our uses.
Basically, the modification goes as follows:
1. Remove the motor from the base.
2. Make a new base with whatever mounting holes you need. I use a rectangular base made from aluminum with S280 mounting hole centers.
3. Remove the stub shaft from the rotor and replace it with a longer shaft salvaged from one of the guide rods for the laser head. The sahft and the rods are are 3mm diam.
4. Remove the bronze bushing from the stator and replace it with a pair of 3X6X2 ball bearings. This is in fact the hardest part, because the center hole s 6.5mm, which is not a standard bearing size. I made an aluminum adapter sleeve and used a 3X6X2 flanged bearing for the upper and a regular 3X6X2 bearing for the lower.
5. Rewind the stator..... I'm still experimenting to find the best wind, but the one I have with 16T of #24 wire has about the same output power as a S380 or S400 and weighs a total of 18 grams! My other one has 19T of #28, and is about the same output power as a S280. Maybe a bit less. But again, it weighs 18 grams!
The only fly in the ointment so far is that my Schulze Future 18be does not like to fire into 9 poles reliably at higher speeds. I have the Astroflight version of the Jeti 06-3P, and it runs just fine. It would be fine in an airplane, but my use is in a Piccolo heli, and the Jeti is too "steppy" in the upper end of the throttle response to work well in the Piccolo. But YEEEOWIE, does it have power! And after a 10 minute flight at about 25W, the motor is barely warm.
ASUS 40X CD-ROM无刷电机 Vs. IKARUS Motor
Asus CDR-40x: 18g
Ikarus G-310: 49g
用在固定翼上也不错！
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发表于 2003-1-30 02:19
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