HGLRC 2408 7"?, Motor sizes, wobble issues

Table of Contents:
00:48 - 220X vs 230X flight feel difference
01:18 - The wobble issue...
02:51 - 2210 on 7" wobble
04:00 - HGLRC 2408
05:27 - 2408 on 7" performance
I DON'T KNOW WHY I KEEP SAYING X-ing INSTEAD OF SSING!?
Things I've tried to solve the wobble:
- All sorts of PID, especially messing with I
- all sorts of antigravity settings
- Every frikin ESC setting available in the config including 48k
- inspecting BB for some sort of noise issue
- Talked to maybe 50 people about it which half thought I was nuts
- Finally spoke to a dev that told me it's a known issue.
HGLRC 2408: ,
This is NOT a good 7" motor. good for 6". too small for 7".
Other good 2408 options:
3B 2408:
Hyperlite 2408.5:
Tmotor F80:
My preferred 5" motors:
Xing 2306: ,
Flywoo 2306:
I actually like 2208 best but cannot tolerate the darn wobbles...
For 7", I've found ~1400kv to be good for 6S and ~1700kv to be good for 5S. The kv can vary quite a bit and you can always use a throttle cut if it's too high for the battery you're using. Keep the throttle cuts reasonable however. You don't want to chop 80% off the top of your power curve because you'll still get super high voltage spikes from the higher kv.
As for motor sizes, I didn't know how good 7" motor performance could get until I tried some larger motors. I now know that 2408 is a good 6" motor size but you'll need more motor for 7" to get excellent performance.
Join my FB group for more discussion: Kabab FPV
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Equipment I highly recommend:
Micro Eagle -
Caddx Ratel 1.66mm lens - This is a new product so we do not know if it is as reliable as the Micro Eagle just yet but I love the picture.
Rush Tank Vtx -
Fantastic solder-
TS100 iron -
WaFL’s Cap Cap
Xing 2306: ,
Flywoo 2306:
Hold off on 220X motors for now. There is a bug in BLheli/BF that makes them act a little weird unfortunately. :-(
Sub $200 5" build that's still good:
Frame:
FC/4in1 Stack:
Motors:
Props:
Props:
FPV Cam:
Vtx:
Starter goggles I recommend:
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