DigiTan
New Member
I'm trying to build a mini-UAV that is based more-or-less on the **broken link removed** or the V-22 Osprey airframes. The problem is that I can't find a set of propellers that are reverse-pitched for counter-rotation. I've tried online and walk-in stores like HobbyTown USA, but nothing has come up. The project has been grounded for a long time because of this.
I tried taking a chance with co-rotating props, but the torque against the plane was so strong, the craft began spinning before it even left the floor. The gyroscopic effect would also be too extreme for the plane to manuver safely.
Basically I'm looking for any plastic prop with an 8-12 inch diameter. I'd prefer a 3-blade design to 2, but that's not critical. The type I had in mind was something like the reduction series **broken link removed**. Right now I'm using these **broken link removed** with an 8.4volt power supply that can dissipate over 55 watts. I'd need between 200 and 250 grams of thrust from both propellers (for vertical mode).
Does anyone have recomendations as far as where I can find these propellers? If they came in pairs, that would also be helpful.
I tried taking a chance with co-rotating props, but the torque against the plane was so strong, the craft began spinning before it even left the floor. The gyroscopic effect would also be too extreme for the plane to manuver safely.
Basically I'm looking for any plastic prop with an 8-12 inch diameter. I'd prefer a 3-blade design to 2, but that's not critical. The type I had in mind was something like the reduction series **broken link removed**. Right now I'm using these **broken link removed** with an 8.4volt power supply that can dissipate over 55 watts. I'd need between 200 and 250 grams of thrust from both propellers (for vertical mode).
Does anyone have recomendations as far as where I can find these propellers? If they came in pairs, that would also be helpful.