GRAUPNER FOLDER BLADES
We are pleased to be able to offer these fine propellers to our customers. Although there are lower cost propellers, the Graupner performed the best in the tests we did for our personal E 36. The E 36 winner at the 2011 NATS also used this blade. Of note is a folder is far less prone to breaking in an accident. And, it helps protect the motor shaft from being bent. Of course, it is well known that a folder will provide far less drag in the glide compared to a fixed blade prop. Look at what all the FAI fliers use for confirmation. But, the real advantage is the great performance of the Graupner blades
We have made up our stock of those sizes we believe are most likely to be used for electric free flight. If there are other blade sizes you need, just let me know at mailto:sales@texastimers.com. Please note that the below blades all have a 6mm hub thickness. That makes them ideal for use with our Hub having a 6mm yoke. Of course, you are also able to purchase spinners and collects elsewhere, but we feel that just adds weight, and a lot of cost.
Our lightweight aluminum Hub has a 3mm motor shaft hole. This can be enlarged somewhat, if needed. The Hub uses 3mm alloy steel set screws (grub screws) with cup points to really grab onto the motor shaft. The blades are held with 2mm screws. The Hub weight with all screws is 2.65 grams. See it Here.
As a convenience to you, we carry a hex wrench for the Set Screws used in our Hub. These are high-torque L-keys have with a unique profile that distributes pressure on the flat sides of fasteners, allowing you to achieve 20% more torque than with standard hex keys, which grip only with their pointed edges.
As a full dealer of Graupner products, we do have access to all the other fine products and can get them for you.
You can see pictures of the blades with our Hub HERE. A single propeller consists of two blades. I sell as a pair of blades.