3″ Renaissance
Rare in the hobby does a single product launch usher in the beginning of a new era. But the Brother Hobby Avenger 1507 motor is one of those. Three inch quads once one of the most popular sizes in the hobby eventually fell to the wayside once the popularity exploded in full size quad racing and freestyle, in combination with the explosion in popularity of Tiny Whoops.
Today, three inch quads are going through a popularity renaissance. This is largely in part to a new line of stacks and motors that have hit the market. In addition, new regulation and weight restrictions around the globe have added to the formation of the perfect storm for micros. The leader of this renaissance that has emerged is the Brother Hobby 1507 Avenger motor.[vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2792″ img_size=”full” onclick=”link_image”][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][vc_row][vc_column][vc_column_text]History of the 3” quad[/vc_column_text][vc_column_text]Now in the past 3” quads were done using 1306 and eventually 1407 motors. I flew several of these over a year ago, and while they had good speed, they just didn’t fly very similarly to their full size counterparts.
Enter the Brother Hobby Avenger motor at a new size of 1507, this creates a substantial boost in power at a nominal increase in weight. This is the missing link that makes 3” quads come alive.
This motor should also have plenty of power to use on a 4” and if you were one of those ultralight people building 165g 1407” motored 5” quads last year, this motor may just be what you are looking for.[/vc_column_text][vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2805″ img_size=”large” onclick=”link_image”][vc_column_text]
1106 size motors on a 3″ vs 1507 size motors on a 3″
[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][vc_row][vc_column][vc_column_text]
Enter the Avenger
[/vc_column_text][vc_column_text]The Brother Hobby 1507 Avenger motor adds no frills of fancy colors, its color a very serious black and dark gray colors give an aggressive combination that lets you know that it means business. The Shiny metallic lettering emblazoned outside its mighty stator gives just the right amount of flash while maintaining it’s down to business aesthetics. Instantly recognizable as it is, it is inside that makes it such an incredible performing motor. The new size on the market of 15mm in diameter by 7mm tall, allows your micro motors to reach new heights of unrealized levels of performance previously only known to larger builds.
These motors are the missing link that finally makes a smaller size 3″ prop, and allow it to fly much more like a 5″. Not just in terms of speed. Raw speed a 1407 could provide, but these motors provide the lift needed to maintain control at low throttle. In other words, your micro 4s build will finally not fall like a brick as soon as you let off the throttle. Combine that with the lightweight of one of these micros builds. You can now have massive performance in a small enough package for unparalleled proximity flight.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Dual Mounting Patterns
[/vc_column_text][vc_column_text]One amazingly unique feature about the Brother Hobby avenger is that it has DUAL mounting patterns on the bottom. This means that it can be easily be mounted to both Micro sized m2 hole frames and full size M3 size hole bolt pattern frames. This is a first I believe for the hobby, and the versatility it adds to people who want to build up the ultimate micro or an ultralight 4” is outstanding.[/vc_column_text][vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2795″ img_size=”full” onclick=”link_image”][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Full size M5 prop nut
[/vc_column_text][vc_column_text]Unlike some other micro sized motors, the 1507 uses a full size m5 prop not. I really like this feature because it makes for changing props faster and easier and if you fly full size 5” quads you already have multiple prop tools available both at home and in the field.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Size Comparison
[/vc_column_text][vc_column_text]Compare the size of a 1507 motor vs 2205 motor vs 2405 motor[/vc_column_text][vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2800″ img_size=”large” onclick=”link_image”][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Recommended Weight
[/vc_column_text][vc_column_text]I have flown many micros 2”, 2.5” and 3” and my recommendation for the best performance /weight ratio on a 3” with these 1507 Brother Hobby Avenger motors is 135-155 grams.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Recommended Props
[/vc_column_text][vc_column_text]Gemfan Flash 3052. These props are another one of the missing links that have finally made 3” Quads a viable options.[/vc_column_text][vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2807″ img_size=”medium” onclick=”link_image”][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Recommended Batteries
[/vc_column_text][vc_column_text]If you are using the weight and prop recommendations the best battery around for the size is the Tattu 850mah 4s battery with xt30 connector. For racing, this is the battery you want. If you are flying not at full throttle you could get away with the 650mah variant of this same battery. Pushing very hard you can get about 2 mins – 2 mins 30 seconds on the 850mah.[/vc_column_text][vc_row_inner][vc_column_inner width=”1/6″][/vc_column_inner][vc_column_inner width=”2/3″][vc_single_image image=”2798″ img_size=”full” onclick=”link_image”][/vc_column_inner][vc_column_inner width=”1/6″][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Specs
- KV: 2800KV / 3600KV / 4100KV
- Configuration: 12N14P
- of Cells(Lipo): 3-4S (12.6 – 16.8v)
- Wire AWG: 26AWG
- Rotor: 1.5mm N52H (arc magnets)
- Stator: 0.15mm Nippon Steel silicon steel
- Motor Width: 19.6mm
- Motor Height: 30.5mm
- Bearings: Japanese NSK
- Casing Material: Al 7075
- Weight: 15.5g
[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_video link=”https://www.youtube.com/watch?v=ejhPlaTFbvE” title=”Brother Hobby 1507 Avenger 3600kv power “][vc_column_text]Engineer X discusses the power produced by the 1507 Avenger 3600kv[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]
Conclusion
[/vc_column_text][vc_column_text]The 1507 motor finally fills the gap between indoor micro and full sized 5” racer. 3” In the past were either to light and floaty, or too heavy and fast (older 1407 builds on older 3” bull nose props weighing 150+grams). This caused for a heavy brick like flying experience in which the second you let off the throttle it would just fall very rapidly. This was in large part to the amount of thrust to weight being provided by these older motors and older props just wasn’t enough to allow great control and altitude maintenance under low throttle. The extra power of these modern day options really helps to alleviate these issues and finally deliver the experience that you have desired in a small package.
These are the motors that make 3” come alive. So wait no longer, this is the answer you have been looking for. Snag them up and start making the micro of your dreams today.
Been meaning to pick some of these up.
Ive been running these motors in the 2800KV version on a uberlite 5″ racing build with carbon fiber props and they have shocked me since day one. ive managed to build a 5″ with an AUW of 236 grams with a 550mah 4s battery and im getting just a little over 2 minutes of flight time with it.