Excellent 7" Props for cruising, freestyle, and even racing.
Review by Daniel A. on 5 May 2020 review stating Excellent 7" Props for cruising, freestyle, and even racing. The Gemfan Flash line of props are still my personal favorite across the board, and these 7040's are part of that lineage. The speed, feel, and response with bigger motors is amazing.
Triblade props provide the best overall locked-in feel, but the overall weight is what dictates the motors that work best with these.
2408/2507 are basically the minimum stator size that work well with these, going larger is always going to be helpful with detailed control. Getting aggressive with P&D gains can help with the limited motor authority, but these are fairly heavy props for any motor below 38g, the limit will be hitting the motor saturation point for quick moves.
I personally still prefer the biblade (7042F) Gemfan props for my particular flying style, because 7" setups make tons of grip with just biblades, but for proper mid-range and long range builds on 2806.5 or similar motors, these are going to be excellent props.
Durability is very good, especially in clear - the only limitation is that overall craft weight is high on 7" builds, so drops from height will bend these at the hub.
The closest competitor is the HQ 7x4x3 props, which are also excellent - these seem to me to have a slight edge in top speed, but are a touch less agile at low motor RPM - both are excellent props that can be used interchangeably on the same tune.
On Gemfan Flash 7040 Tri-Blade 7" Prop 4 Pack - (Choose Color)
){kind=link}
