A simple conversion to GAM and sound with:
SMB | coreless motor 12,800 rpm; 7mm | Adapter shaft to 1.35mm | power speaker
It fits whispering gear worm 2s.
Due to the design, the SMB is installed with the loudspeaker facing downwards so that there is room for the decoder at the top. Therefore, the loudspeaker must be insulated, but not completely airtight!
After soldering the speaker wire, a thin adhesive film is sufficient, which is glued on over the entire surface. Then glue in the SMB.
justandersson & friends item
