GWS EP Counter Rotating Propeller (RH-1047 254x119mm) (6pcs/set)

 Smeghead 14 points

No you can not, you will get thrust in the same direction and it will be no where near as efficient.

 Cyberdactyl 5 points

Who knows, some items at HobbyKing stay out of stock for many weeks. Could arrive tomorrow or next year.

 RonRC 1992 points

MrBeanS, May not be the best thing to do, but to make mine fit, I've been putting them on my drill press and carefully opening the holes to fit what ever adapter I'm using. So far, it has worked quite well. Hope this helps!

 zebu14 21 points

As I can remember, they are already fitted for 3mm shafts ! (you'll need to drill them only if you want to use larger shaft)

 majik01 2650 points

These props were designed to be used for 3mm geared brushed motor drives that was held in place by screws and washers and that's why the hub is relatively small but thick. Drilling them to fit a 5 or 6mm prop adaptor means you will not have a lot of hub material left. If I need to use a prop adaptor, I would follow RonRc's advice .. but very carefully.

 Vionnet 1050 points

orange or black it's not mentionned you have two chances on 2

 RonRC 1992 points

I didn't see the black version.

 zebu14 21 points

I've always received 1047 in Orange and 1147 in black :-)

 Javier 6 points

I got my common ones in black and the counter rotating ones in orange.

 sandman_br 483 points

yes, but its reccomended buy the cw prop from with brand name.

 majik01 2650 points

Yes as sandman said, they can be used for quads. I got the same size normal blacks ones to contrast with the orange so I can use those for orientation purposes. Cheap, tough and they are almost always properly balanced.

 UAV-EGYPT 16 points

yes u should buy the normal package also if u using quad

 RonRC 1992 points

That is my plan! According to the prop calculator I use, these are the most efficient (diameter and pitch) in the 10 inch two blade props.