30-Jul-2021, 06:17 AM
Took my 9" Avenger2812 for spin today - zappy sparky zap zap mid air - propellers chewed up balance cable I forgot to secure. Landed/Crashed and holly shit sparks everywhere!!
Anyway..
7" weight compared to 5" - everything else like FC/vtx/camera is basically identical.
1. 7" Props are 9g-10g.. vs 3g-5g
2. Heavier 50g 2806.5 motors vs 30g 2306 typical 5"
3. Longer frame arms. DO NOT use 4mm arms. 6mm minimum. Frame is typically +40g heavier.
Dry weight, you are looking at ~35g extra per arm. (For digital add 30g).
That is +140g overall.
Freestyle 5" without GoPro = 300g
Freestyle 7" without GoPro = 440g.
1. As I stated before, ALWAYS build 6S. There is no good reason not too. If there was, we would be still using 1S.
2. The bigger the prop/size, the more it can carry easily. Recall 7" props are double area of 5". 400g battery sounds like a lot, but not on 7".
3. Pancake 2806.5 motor is not necessarily more efficient. Meant to be used with light prop.
My 7" eats amps like crazy. 7" doesn't guarantee long flight times. Mine flies shorter than 5".. but much faster. This is mostly prop choice.
Anyway..
7" weight compared to 5" - everything else like FC/vtx/camera is basically identical.
1. 7" Props are 9g-10g.. vs 3g-5g
2. Heavier 50g 2806.5 motors vs 30g 2306 typical 5"
3. Longer frame arms. DO NOT use 4mm arms. 6mm minimum. Frame is typically +40g heavier.
Dry weight, you are looking at ~35g extra per arm. (For digital add 30g).
That is +140g overall.
Freestyle 5" without GoPro = 300g
Freestyle 7" without GoPro = 440g.
1. As I stated before, ALWAYS build 6S. There is no good reason not too. If there was, we would be still using 1S.
2. The bigger the prop/size, the more it can carry easily. Recall 7" props are double area of 5". 400g battery sounds like a lot, but not on 7".
3. Pancake 2806.5 motor is not necessarily more efficient. Meant to be used with light prop.
My 7" eats amps like crazy. 7" doesn't guarantee long flight times. Mine flies shorter than 5".. but much faster. This is mostly prop choice.