Aluminium is conductive enough to be used as an antenna, shirley? Crabon may not need an antenna - Assuming it doesn't act as a faraday cage (cos it's plastic), nor attenuates a GPS signal too much.
I'm also guessing that the sheer size of the frame (comparative to a GPS receiver antenna in, say a watch, or a GSM antenna I a phone) means that the shape is irrelevant.
Aluminium is conductive enough to be used as an antenna, shirley? Crabon may not need an antenna - Assuming it doesn't act as a faraday cage (cos it's plastic), nor attenuates a GPS signal too much.
I'm also guessing that the sheer size of the frame (comparative to a GPS receiver antenna in, say a watch, or a GSM antenna I a phone) means that the shape is irrelevant.
Bamboo bikes should be burned, not stolen.