This is the Hyperlow 14xx Racer. It's a 200mm frame designed to accommodate different setup styles. The main base and arms can be mounted above (like my config here), or below like a traditional setup. When configured with the base on top it can run 5" props, which make this thing lethal. It's a semi-light setup at 241.85g (without battery) and handles quite differently from everything else I own. It's taking some getting used to, but at this size, weight, and 5" props on CG balanced 200mm frame that requires 14xx sized motors, and in this "prop up top" configuration is a combination that is quite different from everything else I own. I only have two test flights in so far, so I hope to have it dialed in soon. This is going to be sick setup, I can feel it. Looking forward to some quality tune and flight time with my new Hyperlow 14xx Racer.
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Guides & Reviews
AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..
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With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..
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4000Kv...! Your motors aren't getting too hot? I tried the RK twin blades with 1407 3200Kv motors on this frame and they almost burned my fingers. If this thing holds up, I gotta try it for myself!
What were you running for ESC amperage? The Flytower Raptor 390 is 30A continuous, 40A burst, which is more than enough to feed these motors. I've only run two test flights at this point, but no problems came up in those two flights. Motors can get hot for many reasons, under amp'ed, incorrect settings in BLHeli (or the like), too much or too little battery power, inefficient PID settings, and on... and on.... :) These 1407's (4022kv) provide more torque rather than high RPM, and 30/40A seems to keep their little bellies happy. For the moment anyway. I still have lots of tuning to do, so we'll see how far the PIDs can be manipulated either way. If I run into issues I will certanly update my listing.
I was running Emax 30A Bullets. I didn't have a scale at the time, so it might've just been a weight problem. Definitely keeping an eye on this one! Excited to see how it holds up.
normally lower kv motors provide more torque and thus run cooler, also if an esc can't supply enough amps normally only the esc will suffer / burn but the motor should be fine
In the RC car world, lower KV is higher RPM and less torque, higher KV is less RPM and more torque, generally. I have to think that the brushless KV rating is the same regardless of application.
kv is rpm per volt so a 4000kv motor spins at more rpm than a 3000kv motor per volt
a 3000kv motor at 1volt would spin at 3000rpm and a 4000kv at 1 volt would spin at 4000rpm, also the motor with a lower kv value generally has more bottom end torque
Look up some thrust tests from Engineer X on youtube. He has a bunch of good info on these smaller motors (and 'full size' ones too!).
I would grab a set of 5030 biblade props and try those. The motors will be able to spin them much better.
Also, you should try a 1000mAh or 850mAh battery on this build, tiny motors do better the faster the prop unloads.
Thanks! I'll give it a shot.