Aero Floss 2.1: RX-001 D Spec

By falconfpv on Jan 01, 2019

13  508  12

This build is a Floss 2.1 with additional aero parts I've designed. The aero parts are primarily for drag reduction and also serves as an impact structure. It is printed in PLA with 2 shells for good strength and tested to withstand at least 23KG without breaking. It currently reaches a max ground speed of 232KPH (144MPH), with a two-way peak average of 225.5KPH (140MPH). The aim of this project is to see how fast a race frame can go with just additional aero parts.

Spec D is an aero focused upgrade which adds a kamm tail and arm fairings. ESCs were changed to the beefier T-Motor 55A as the Tekko32 burned up. The motors were changed back to the Cobra 2207 2450kv as the Hyperlite 2207.5 2722kv were too amp hungry and making the battery way too hot. They are mounted in a pusher configuration to allow a cleaner thrust column.

Dry weight with no aero: 300g Aero parts: 70g AUW: 590g

Previous Spec of this build:



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Dirkdigla666   Jan 19, 2019  

pretty cool.
I modify and fly strictly for speed as well.
I've gotten a ruxus v2 stock up to 172mph ,max speed hit ,no 2 way or anything .
I also was flying straight down my road and have to stay under powerlines so would say reguardless of any complex algorithms used to correlate speed and heading changes as well as elevation and wind speed which was 2mph that day,I'd bet it's over 99% accurate as too speed hit.
I've even had a stock astrox switch 5in up to 151mph on a 5s pack,which its aerodynamics I find pretty awesome.
I've used ths vertical lipo mount on my ruxus v2 and also the ARK QSD 6in frame ,as kts the only way for that frame and while its fast and has great potential it still cell short of my stock race frame while it being a made for speed frame .
have a video of my ruxus running 4in on 4s at 134mph if you search speedshield 2207.5 3400kv you'll see it instantly.
trying to find a good boss cone to use for my efaw 2500kv speed setup but no luck.
might try foam and make a piece that pops out and hollow it for camera and that's it.
will know any day as I need to get back at speed record.
nice build man i like it.

falconfpv   Jan 20, 2019 

Thanks for sharing! I might move on to an even smaller frame after I've more or less maxed out the aero on this quad (Looking at you, Merica). The real estate used for horizontal mounting is indeed adding quite a lot of drag. I've seen quite a few builds achieving >150mph speeds using frames meant for bottom mount. There's probably a lot to gain from there.

0blivious   Jan 19, 2019  

Incredible progress from the first iteration! Very few aero tweaks are left and I am excited to see even further progress!

falconfpv   Jan 19, 2019 

Thanks! I'm currently still finetuning the tail mount to increase its strength. There's a new aero update for the nose as well. Can't wait to test them soon!

MATEKMAN   Jan 15, 2019  

Nice powerfull build
Have you test speed with lipo 6S ?

falconfpv   Jan 16, 2019 

Thanks. Haven't tested with 6S, but I may do so when the aero is quite optimised.

QuadStar Drones   Jan 03, 2019  

I'm enjoying watching the progress! "They are mounted in a pusher configuration to allow a cleaner thrust column." My next project is also taking advantage of this :)

falconfpv   Jan 03, 2019 

Thanks! I can't wait to see how your next project looks like!

QuadStar Drones   Jan 03, 2019 

Just uploaded a picture:

falconfpv   Jan 04, 2019 

403 error on the website :(

Jimskane   Jan 01, 2019  

you really went all out! nice work!

falconfpv   Jan 01, 2019 


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