Catalyst MachineWorks SL4r 3.5mm

By jolars on Apr 29, 2017

6 3 2

I loved the idea behind the SL4r and jumped right in as soon as the motors became available. This is such a fast, fun quad to fly. Omnibus F3 provided OSD through betaflight and Unify Pro provides vtx control through smartaudio - awesome setup!

Photos

Part List

Frame	Superlight 4R (4 inch) (11 builds) Catalystmachineworks.com	$64.99
Flight Controller	Flip 32 - F3 - Omnibus v3 ( w/ BARO OPTION) (32 builds) Readytoflyquads.com	$20.99
ESCs	FVT Littlebee 20A 4-in-1 Pro ESC Progressiverc.com	$39.99
Motors	4 x Brotherhobby Tornado T1 1407 3600KV 4S Racing Edition Brushless Motor for FPV Racer (329 builds) Banggood.com	$67.96
Propellers	10 Pairs Kingkong 4045 4x4.5 Inch PC Fiber Glass Propellers CW CCW for Multicopter (7 builds) Banggood.com	$5.44
FPV Camera	PZ Mini FPV camera (11 builds) Rotorgeeks.com	$33.24
FPV Transmitter	TBS Unify Pro 5.8 GHz HV RACE Video Transmitter (555 builds) Fpvheadquarters.com	$24.95
Antenna	FuriousFPV STUBBY 37mm 5.8Ghz U.FL RHCP Circular Antenna (Green)SKU: FPV-0186-S (3 builds) Furiousfpv.com	$6.47
Receiver	FrSky XSR 2.4GHz 16CH ACCST Receiver w/ S-Bus & CPPM (480 builds) Getfpv.com	See Site
Batteries	Tattu 4S 850mAh 75c Lipo Battery (13 builds) Fpvheadquarters.com	$18.86
Misc Parts	10pcs Panasonic FC 1000uF 35v 105c Radial Electrolytic Capacitor Low ESR, 5000 hours @ 105C (9 builds) Amazon.com	$8.72
Misc Parts	RunCam 120 Degree Wide Angle 2.1mm FPV Camera Lens for RunCam Swift Swift 2 Swift Mini (3 builds) Banggood.com	$6.99

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Discussion

Indy Jun 15, 2018

hi! cool build! what props do you prefer? 4x4x3 or 4x4.5x2?

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Indy Feb 20, 2021

hehe... I used a lot both... 4x4x3 a bit heavy...
years later 4 inch are more popular, it seems... light long range... I guess there is better props nowadays... I'm starting again to fly... let's see...

jolars Feb 20, 2021

Yep, all my rigs are smaller and lighter these days - cheers

jolars Feb 20, 2021

I still fly this 4", I put a tiny inta360 go on it recently -

GBFPV May 05, 2017

Hi,

I see on your photos you have both linear VTx and Furious FPV pinwheel uFl antennas. I have the linear one and plan to switch it for the pinwheel as the signal is not as expected with the linear. What's your experience with both?
Thanks,

jolars May 11, 2017

I certainly get better signal with the Furious antenna. I had the linear one but it turned out I was only transmitting at 25mw and a channel off - I didn't give it enough credit.