ghost civic
Senior Member
I have previously only used lower kv, small motors spinning 8x4 or 9x5 slow fly props.
but I just flew a new DTFB profile I build with a 2212-6 2200kv motor. The prop that came with it was a orange 6x3.5 prop...this broke on the first attempt to fly (plane poorly trimmed)
The only other similar prop I had to try was a 3 bladed 7x3.5. The plane did fly, had plenty of thrust but not nearly the speed expected.(could have been as high as 75mph, but was more like 50) and above 60-65% throttle the sound changed, which I think was the prop blades bending. Both the 3 blade prop and the orange prop were much more flexible than the slow-fly 8'' props I am used to.
I understand that a smaller diameter props makes sense on a higher KV motor, but shouldn't that prop be at least as stiff as a slow fly prop? The 3 blade prop is sized to fit on my motor, but surely it is meant for a much smaller plane? Am I missing something?
Here is a pic of the motor and the original props.
If anyone can recommend a good prop for this type of motor....or maybe explain the different types of props (I notice HK has many different even for electric planes) that would be a huge help. The ones I have don't hold up on this motor and break very easy.
but I just flew a new DTFB profile I build with a 2212-6 2200kv motor. The prop that came with it was a orange 6x3.5 prop...this broke on the first attempt to fly (plane poorly trimmed)
The only other similar prop I had to try was a 3 bladed 7x3.5. The plane did fly, had plenty of thrust but not nearly the speed expected.(could have been as high as 75mph, but was more like 50) and above 60-65% throttle the sound changed, which I think was the prop blades bending. Both the 3 blade prop and the orange prop were much more flexible than the slow-fly 8'' props I am used to.
I understand that a smaller diameter props makes sense on a higher KV motor, but shouldn't that prop be at least as stiff as a slow fly prop? The 3 blade prop is sized to fit on my motor, but surely it is meant for a much smaller plane? Am I missing something?
Here is a pic of the motor and the original props.
If anyone can recommend a good prop for this type of motor....or maybe explain the different types of props (I notice HK has many different even for electric planes) that would be a huge help. The ones I have don't hold up on this motor and break very easy.