R/C Wx Great site for hourly wind speed and direction, temperature, and cloud bases
Lift-Zone Sailplane discussion groups hosted by rcgroups
E-Zone Electric airplane discussion groups hosted by rc-groups
Wattflyer E-Flight Forum Another good electric forum
RCUniverse Sailplane, Glider, and Slope soaring discussion forum hosted by rc-universe
P-Calc. Electric Performance calculator for electric powered models. Maintained by Diversity Model Aircraft
Charles River RC Links Page If you need an R/C related link, this is the page!
Smallparts.com Good source for hard to find materials, components, and tools.
Boltdepot.com Good online source for all types of fasteners
Prescott Valley Silent Flyers AMA club

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Please checkout the following links to companies who have supported our annual contests by providing gift items.