The HGLRC Flame 1105 motors have been out for a while now and I've always wanted to put into a decent build. That build is covered here in my Komori review but here I'll just cover the motors specifically.
These motors are available for Gearbest for around $8-10 each making them a mid-price motor. On the bench they feel well made and smoother than the DYS 1104 motors I've reviewed previously. They have a lightweight 'naked bottom' design and come in at 5g each which is very similar to the aforementioned 1104 DYS motor even though they have a 1mm taller stator.
For the purpose of this review you will find me making many comparisons to the fullspeed branded 1104 7500kV motors that come standard on the Leader 120 (review here) because this is something of a performance benchmark and a popular model that many can use as a reference point. As above my test rig is the flexRC 3" komori lightweight frame using as fairly standard 20a ESC / F3 flytower combo and Gemfan 3025 twin blade props. Both the Komori and Leader were 71g dry.
Performance on 2s
For 2s flights I used my trusty Turnigy Nanotech 2 950mah batteries. Performance with these batteries on the HGLRC flame motors were smooth and predictable but lacked the top speed of the leader motors. This understandable as the 7500kV rated leader motors are better suited to 2s than the 6000kV HGLRC flame motors, even though the stator on the HGLRC is 1mm taller. I'd suspect this gap would be even smaller if you went with a more agressive prop like the Gemfan 3035 3 blade.
Performance on 3s
This is where I thought the HGLRC Flame motors would be most suitable and I was not disappointed. The power delivery was smooth, linnear and very controllable with a top end speed comparable or faster than the Leader 120. By comparison the leader 120 dips and feels less controllable at the upper end of the throttle. My guess is this is because the kigher kV and lower torque due to the shorter stater means it doesn't have the force to spin up the propeller to it's maximum speed like the HGLRC motor can. Later on down the track I'll try with the Gemfan 3035 triblade props as I suspect the motors still have a little more to give. I got a 4:30 flight time compared to 4:00 on the Leader 120 which leads to further weight that the 6000kV motors is more in it's ideal power/efficiency range compared to the 7500kV motor.
Overall on 3s the flight experience with the HGLRC FLame 1105 6000kV was really nice, very predictable and linnear and no sacrifice on top speed. By comparison I think the kV is slightly too low for 2s but a more agressive prop than the 3025 I used would probably be a noticeable improvement. Importantly the motors are well made, sell for a fair price of approximately $10 each and have silicon multistranded wires that make them sooo much easier to work with!
I'd recommend these for a high power 2" quad on 3s, any 2.5' quad or very lightweight 3" quads like the Komori
My motors came from Gearbest (use RC18off to get them for $8) but can also be found at Banggood or HGLRC directly.
Other parts mentioned in this review:
Gemfan 3025 propellers (Definitely recommend these for this motor)
Gemfan 3035 propellers (I'd like to try these on 2s but current draw may be too high on 3s
Gemfan 2540 propellers (My favourite prop for the leader or any 2.5" quad)