Five33 Spec7

By SloGrits on Oct 09, 2023

7 0 3

Hello this is my 7" racer build. It is clean with little vibration. Uses 5mm hardware and 8mm standoffs. Can be used for cinematic with a GoPro, racing, freestyle, and longrange. Props are inview of the fpv camera. I used a Kiss Ultra FCFC with hard ImpulseRC Standoffs. No Gummies! It has very little propwash and can easly cruise at 68 mph. Picture below is next to my 5" ImpulserC Apex. Frame can take long or short arms.Photo of frame build is with short arms and complete is with long arms.

Photos

Part List

Frame	Spec7 (Street Legal 7” Frame) Flyfive33.com	See Site
Flight Controller	Kiss Ultra V2 FC (3 builds) Vannystyle.com	$99.99
ESCs	Foxeer Reaper F4 128K 32Bit 65A 3-8S 4in1 ESC - 30x30mm (8 builds) Pyrodrone.com	$84.90
Motors	4 x T-Motor F90 2806.5 Motor - 1300KV/1500KV/1950KV Getfpv.com	See Site
Propellers	HQProp 7X4X3 Light Grey (2CW+2CCW)-Poly Carbonate (7 builds) Newbeedrone.com	$3.59
FPV Camera	Caddx Nebula Pro Vista Kit 720p/120fps Low Latency HD Digital FPV System (164 builds) Getfpv.com	See Site
Receiver	RadioMaster RP1 ExpressLRS 2.4GHz Nano Receiver w/ 65mm UFL T-Antenna (5 builds) Getfpv.com	See Site
Batteries	RDQ Series 22.2V 6S 2800mAh 100C LiPo Battery - XT60 (3 builds) Racedayquads.com	See Site
3D Printed	This site requires JavaScript enabled Printables.com	See Site
Accessories	Standoffs Impulserc.com	$4.07

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Discussion

Fpv_Srabutan Jun 26, 2024

I'm planned to build this. I'm attracted to your statement "No gummies". why is that? I'm new in this. my logic is does the gummies damped vibration from motors or impact when crash or landing etc. so why you not using them?
my concern is longevity PCB of my stack against vibration.
thanks in advance.

SloGrits Jul 28, 2024

Sorry I havent been on this site in a while. I hope your build went well. Answer Kiss Ultra needs to be hard mounted. ImpulseRC hard rubber standoffs or from the kiss ultra store. I guess it has to do with the flight controllers filtering. More dampened makes lower frequencies. Harder higher. it is easier to filter higher frequencies. I might not be totally right but, just say Kiss Ultra FCFC is designed that way.

Fpv_Srabutan Jul 28, 2024

Thanks for the explanation. It makes sense, when using a soft damper does not guarantee that all vibrations will be dampened all the effects of vibration. Moreover, when the quad performs sharp maneuvers, it is possible that inertial forces affect it. Cheers and happy flying

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