The BHPFC makes propeller blades suitable for HPAs. They are used by 3 teams in the BHPFC competition and so are of proven design.
The blades can be adjusted to suit the thrust and flying speed of most HPAs
Considering the time and cost of producing blades for most HPA builders the blades are cost effective
Price £100 per blade which covers production costs and p&p in Britain.
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See HPAs for a PDF of Betterfly with more details.
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