Beta95X Caddx Tarsier 4K w/ Crossfire

By wrong17 on Feb 14, 2020

8  85  0

I had a 2.5 GnarlyFPV Primo frame that I crashed and broke but never repaired, so I think this would be a great opportunity to try out a new frame that my friend recommended, Beta95X. I did not want to pay over $300 for a BNF quad when I have most of the parts need to build one. It looks like the Beta95X is designed for the Caddx Vista, so I do not think I could not even get a 4K version even if I wanted it.

Other than making the mistake of soldering the motor wires on the wrong side of the AIO FC, everything went smooth. The only thing I need to do was extend the VTX wires because it sat on top of the Caddx Tarsier, which is inside of the canopy. Whereas the Primo it was directly on top of the FC.

The only thing I kept from the Primo is the GepRC 12a AIO FC ESC, TBS Pro32 Nano VTX, and TBS Crossfire Nano. I swapped out the Runcam Racer 2 camera for the Caddx Tarsier 4K and the Hyperlite 1103 8022kv motors for Hyperlite 1106 5122kv. To be honest, the 1106 motors is not really what I wanted to use but that is the only thing I had on hand. The reason why I am worried about these motors is that it might be an amp hog.

After my maiden flight with a GNB 2s 450mah Lipo, I was right about the motors being amp hog. Other than that, it was great, responsive and quick for being a 2s. When I used a 4s lipo it was a monster! I am going to try some 1204 5000kv motors and I hope it will tame it down a little. I am debating if I should try the Xing 1204 4500kv instead of the BetaFPV 1204 5000kv motors. But the Xing motors weight and cost more.

II end up getting the BetaFPV 1204 5000kv motors and it is defiantly an upgrade from the 1106 motors I had. I am getting a lot better flight time and the voltage sag is manageable. By switching out the motors the quad now weighs only 89g. I tried using a different prop that is lighter, HQ 65MMX3 but it handled very poorly. With the stock PIDs on betaflight version 4.02 the Emax Avan Rush felt the best. I plan to try some other props but that is all I have on hand. The biggest issue I had with the HQ 65MMX3 props is the wobble during high speed cornering.

Here are 2 videos of the 1204 5000kv motors with 4s lipo.

Tarsier HD:



Part List


Beta95X Frame Kit (2 builds)

Flight Controller

GEPRC F4 v1.1 12A AIO Toothpick / Whoop Flight Controller (2 builds)


BETAFPV 1204 5000KV Brushless Motors (4pcs)


AVAN Rush 2.5 Inch Prop - RED (6 builds)

FPV Camera

Caddx Tarsier V2 4K Dual Lens FPV Camera w/ WiFi (30 builds)

FPV Transmitter

TBS UNIFY PRO32 NANO 5G8 (108 builds)


Team BlackSheep TBS Crossfire Nano RX - Heli-Nation (470 builds)


GNB 4S 520mah HV 80C XT30 Lipo Battery (8 builds)

Misc Parts

BetaFPV Tarsier Canopy for Beta85X 4K - BlueDefault Title
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