202 mph XLR

By QuadStar Drones on Apr 15, 2018

20  539  8

Alt Tag

195.99 mph (315.42 kph) average speed over 100m opposite directions, top speed of 202.11 mph (325.26 kph)

The average speed will be the official record that goes in the Guinness books - but since I am so cheap, I did not pay for the expedited review so this could take up to 4 months for the review. Still relying heavily on drone physics in the continuing pursuit of efficiency.

Data Links

Blackbox Log file
Spreadsheet with decoded GPS data analysis
How the data is analyzed

Since it was suggested: Witness statement links

Witness Statement 1 (jpg since I couldn't redact pdf)
Witness Statement 1 Signature closeup (since jpg signature looked too digitized):
Witness Statement 2
Witness Statement 2 Signature closeup

Why the Shady Pictures?!?!

Before I get to the why, the picture shown of the gray one is the actual XLR frame that hit 202mph. I had 5 frames (2 5s and 3 6s) and there was no way of knowing which would be the one to do it - 2 frames never made it back and 2 frames never got a chance to get in the air (that's a good thing).

The arm design is rather unique and took an unhealthy amount of sleepless nights to get just right. I have a patent pending on them, but the USPTO only protects IP in the US so I have to keep it secret until I am ready to sell some frames. The frames will be nothing like the XLR but they will use the same construction method for the arms.

I'll Admit When I Do Something Stupid

No more Easter Egg cones - with the help of Forrest Frantz and Jon Blackburn, I was able to have some nicely designed and 3D printed nose and tail cones which were carbon reinforced. My mentality failed me severely: I had the VTX antenna sitting in the back of the tail cone... Of course, I had a lot of video issues and was clueless :/ Thank God Jayson (known here as metropolis and as metropolisfpv on YouTube) reminded me of the carbon in the tail cone. This was literally fixed the night before leaving Scottsdale - and we were set to leave early in the morning, just enough time to have the witnesses come over and quickly get one run in.

30A ESCs and a 6s Nano Tech Lipo?! LMAO!!

Unintentionally (and contrary to intuition) I learned something: speed quads aren't amp hungry. You can read why here, and it has to do with prop unloading which you can read about here.

Next Goal: Production... but Not the XLR... at Least Not the Whole Thing

Design for production frames that are based on the same arm construction method as the XLR, but won't be anything like it. However, they could be made into a rocket like the XLR without too much effort. A few other innovations will be on the frames too. Although I have a 5" design that is as low as 26g, I opted to make it a little bit beefier at 32g. However, I am still having carbon cut for both (they are actually quite different in other ways) and hope to have them in about 2 weeks to do some trials on them. If all is good, or even if a few things have to be modified, I'll cut about a dozen frames, send them out to a few pilots, and get the final word. With that said, I would say things will be ready about mid June.

Photos of Scrapped Designs

The photos also show some discarded prototypes that never panned out. Only one flew and it was just too flimsy.



Sign in to comment

Apeian   21 hours ago  

OMG...dude...the Depends link at the end of the parts list...priceless! ;)

QuadStar Drones   18 hours ago 

Needed at those speeds and when crashing (too many crashes, triple dipped on the samples)! They come in "discreet packaging" so the neighbors don't know...

BloodyLordV   6 days ago  

I really wish this frame was for sale...

QuadStar Drones   4 days ago 

I hope to get there one day... it's one of those things where it is so customized that it would cost too much $$$ to sell :( Still, the production frame based off the arm design is going to be a screamer!

BloodyLordV   4 days ago 

As for me - it is only a Time I nerd to earn enough to by this frame. What everywhere The cost - I Would be interested.

P0operMcWank   4 days ago  

I have a capuchin monkey named Buck Rogers that I would love to put on this build. I bought him to do dishes but he just throws and breaks them.

Racer-XFPV   4 days ago  

I saw your KabobFPV expose and am impressed!

QuadStar Drones   4 days ago 

Thanks - it's a good sign when KababFPV is excited about this frame since I consider his designs extrememly well thought out and I would say that they are easily some of the best frames on the market.

Guides & Reviews

1,096  3
16 days ago

The SJ RG01 is a unique entry into the FPV space. It's unlike any other headset. What makes it stand out is its compact size and budget price. Traditionally budget headsets feature a single display requiring more physical distance between the lens and display. More expensive FatShark-style goggles use two small displays to create a much more compact unit while compromising the field-of-view (FOV)...

Read more
Jan 20, 2018

This is the 3rd revision in the "Wizard Killer" series of builds based on the Martian II frame. The original Wizard Killer was my response to the successful Eachine Wizard RTF quad. The Mark III supersedes the more budget oriented Wizard Killer Mark II and is the most featured packed, simple to build and powerful of the three. The base weight with props is about 326g and fully loaded with a battery..

Read more