Hacker B20 18L+4:1 Planetary Gear Box. Own a little piece of R/C History!
For sale is a used Hacker B20 18L with the Maxon 4:1 Planetary Gear Box.
But this isn't just any Hacker. This motor is the exact motor powering the aircraft pictured on the cover and first page of Scott Stoop's Book "R/C Pilot's Guide to Mastering Radio Controlled Flight"! This book is a wealth of information, and I highly recomend it!
This is the only aircraft this motor has powered, and the aircraft was retired after only 20 flights or so.
Hacker will sell you one of these for $200
Price $80 Shipped CONUS
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