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Interested or already an owner of a Kayouloin 7" ? The starter pack was made for you!
The purpose of this page is to bring together all the useful information you'll need to build your quad around this frame.
Quick Access
Quick Access
Useful links just a click away.
Useful links just a click away.
Where to buy ?
Where to buy ?
Kayouloin 7" (Frame Kit)
Build guide (PDF)
Useful links :
Useful links :
Official Printables (3D prints STL files and documentation)
Before starting
Before starting
Long Range is a risky discipline, and 7" is far from being the best format for a beginner pilot.
If you've just joined the hobby, we strongly recommend that you start with a lighter, less dangerous 5" Quad, or even better, a Kayoumini 2.5", before jumping in on this kind of adventure. Fly safe.
Kayouloin 7"
Kayouloin 7"
Rip Mountains like never.
Rip Mountains like never.
Long Range, Mountain Surfing, Freeride, the Kayouloin is an ultra-rigid 7" frame with very stable geometry, born to rock mountain passes and peaks.
8mm arms
Front, Rear and Top plates in 3mm
Squished X geometry
The rigidity provided by its 8mm arms and wide plates allows you to largely push the tune , reducing latency to a minimum and increasing responsiveness and agility compared to other 7" frames on the market.
It has been entirely designed around wind resistance, performance and handling to offer an exceptional flying experience for the format.
Gallery
Gallery
Design choices
Design choices
Uncompromised performance.
Uncompromised performance.
Weighing in at 275g, the Kayouloin is not the lightest Frame on the market. This is a deliberate choice, reflecting the direction we took from the very beginning of the development : The Kayouloin was not built for straight lines and cruising.
Rather than focusing on minimizing weight to maximise flight time, we went for a high rigidity design with a stable geometry aiming for exceptional flight characteristics for intense Mountain Surfing.
No worries: The weight increase remains largely contained, and the frame remains highly competitive in terms of flight time and range, which is the main objective of a 7" Quad.
This baseline of flight performance-seeking shaped the design choices detailed below.
Arms thickness - 8mm
Arms thickness - 8mm
Wide bottom plates, triple screws per arms and 8mm arms, we didn't do things halfway.
A stiff, "healthy" quad allows you to push the tune and have a more aggressive, responsive and locked-in quad than ever before, making the Kayouloin the ultimate Mountain Surfing frame. Kayou offers presets to get the most out of each frame, and you can find the Kayouloin's here!
Indirectly, thick arms means more impact resistance, even if that's not the primary objective.
Vibrations handling
Vibrations handling
For blackbox experts, here's a Gyro Scaled extract from a Freestyle flight - it's impressively clean for a 7" quad!
Squished X Geometry
Squished X Geometry
Deadcat suck balls
Deadcat suck balls
A Squished X frame is significantly more stable than a Deadcat frame: that's the direction we've taken with the Kayouloin.
No need for fancy explanations on this point, an X-frame is by definition more balanced on all axis.
This makes the quad much more stable, responsive and tolerant in harsh Mountain environment.
Deadcat
Deadcat
Squished X
Squished X
What about props in view ?
What about props in view ?
What about props in the FOV if we're going with Squished X? That's the whole point of a deadcat: to have a clear fov.
-> Kayouloin's Squished X has been designed to provide an unobstructed field of view on a 4:3 or 8:7 (Full Frame) GoPro beyond 25 degrees of tilt.
For the DJI O4 Pro, "exposed" prints also bring the FPV Cam forward for a unobstructed HD FPV Experience (see below).
Build tips
Build tips
Digital builds
Digital builds
Since the deck is longer than a standard 5" Quad, most MIPI cables sold with digital VTXs will be too short.
If you're building a Kayouloin 7" in HD, you'll need to add a MIPI cable of at least 170mm to the shopping list. 200mm gives you a bit of slack, and that's what we recommend.
The DJI O4 Pro Stock MIPI cables is longer than this, no additional cable is required.
DJI O4
DJI O4
You'll find two mounting options for the DJI O4 on Printables, pick the one that suits you best !
If you plan to fly with a GoPro, we highly recommend the Standard version.
Few shots of an O4 build with the Standard Mount :
Components placement
Components placement
The TPU kits designed by Kayou follow to the letter the best component placement for an optimized Long Range build.(Receiver on the front, vertical antenna placement, etc.). All you have to do is let us guide you to the perfect build !
The frame is more than roomy, with its long deck designed to fit large batteries, so assembly is straightforward.Take a look at the photos of the following builds if needed.
Configurator
Configurator
The best components recommended by the community for your Kayouloin 7".
The best components recommended by the community for your Kayouloin 7".
Motors
Motors
There are 2 main categories to choose from, based entirely on the flight style you're looking for.
Low kV (1100kV-1300kV)
Low kV (1100kV-1300kV)
Smooth flight, cinematic
Ideal for heavy builds with Li-Ion + Gopro.
Slightly longer battery life (depending on flight style)
High kV (1400kV-1500kV)
High kV (1400kV-1500kV)
Agile and responsive.
More power and thrust at high revs
Kayou's note: the Kayouloin is pretty much designed around this option !
Keep in mind that we're talking about a minimal difference (10 to 15% more perceived power for the higher kV options), you can totally fly aggressively with a 1300kv build and smoothly with a 1500kv build, but if you know exactly what you want to do, you might as well go for it without compromise.
High end
High end
Available only in 1400kV (a good middle ground) and with a color that's gonna scare mountain goats. They are known to be the most efficient motor on the market.
What would this list be without a T-Motor F90, legendary 7" motor with excellent performances.
Entry/Middle Range
Entry/Middle Range
Historically the kings of entry-level motors, with a new iteration that's well worth a shot !
Latest iteration of the BrotherHobby 2806, excellent motor at a very reasonable price.
Stack
Stack
With a 7", we'll prioritize reliability, even if it means breaking the budget. Going 30x30 is mandatory, you've got room for it
On the FC side, F405 is more than enough in theory, but if you need more uarts, you can switch to F7. We suggest a minimum of 50A on the ESC side.
Mandatory Quad recovery equipment
Mandatory Quad recovery equipment
Long Range is not about if you're gonna loose your quad, it's about when are you gonna loose your quad. To have the slightest chance of finding it back you need to be prepared with the right and properly set up gear !
Buzzer
Buzzer
It needs to be autonomous, with an independent built-in battery, an absolute must for long-range.
If your battery disconnects or runs down once you've crashed, the buzzer will emit a loud sound and/or light at regular intervals, enabling you to recover the quad up to a day after you lost it.
Tested and approved for up to 30 hours of beeping.
GPS
GPS
It will not allow you to display speed and altitude on your OSD, but also and most importantly to use the Return to Home feature, and to see the last known GPS Coordinates if you loose it !
No need for a 45e GPS, a BE220 will do the same job for around 10 bucks with an integrated M10 chip.
Batteries
Batteries
A 7" is very flexible in terms of carrying capacity. Lipo batteries ranging from 1300mAh to 4000mAh are perfectly suitable, and will offer a different flight behavior and flight time ! Your take to pick what suits you best.
Lipo
Lipo
6s 1300mAh, ≈ 4-6min flight time for 220g
Flight time similar to a 5" quad but with extra speed. For such a lightweight pack, your quad is a rocket, you'll already be able to hit 2km out and back.
6s 2200mAh, ≈ 6-10min flight time for 400g
Great flight time to freeride around while emaining very agile, a good compromise.
6s 3300mAh, ≈ 8-14min flight time for 530g
My favorite pick to date, plenty enough flight time, comfortable range and great agility for hardcore freeride, I love it.
6s 4000mAh, ≈ 12-15min flight time for 630g
Excellent combo for high-speed cruising, you'll start to feel the weight but the distances you'll be able to cover are huge. (5-6km out and back)
Li-ion
Li-ion
6s1p 18650, 3000mAh, ≈ 10-12min flight time for 270g
Over-rated, flight time largely attainable with LiPo packs. The 30A of the best 18650s are extremely limiting, sagging and heating up the battery, I wouldn't recommend them.
6s2p 18650, 6000mAh, ≈ 16-20min flight time for 540g
Paralleling compensates for discharge rate problems, it's an interesting setup, but rather expensive as 2 packs and 12 cells on the quad.
6s1p 21700, 4000mAh, ≈ 14-18min flight time for 450g
Excellent trade-off, no paralleling, so less expensive and less dangerous. The discharge rate of the 21700 allows you to fly with complete peace of mind and little heat, perfect for long-distance flying.
6s2p 21700, 8000mAh, ≈ 20-30min flight time for 900g
You 're flying a school bus dedicated to pure cruising, but flight time is there !
Keep in mind that Li-ion batteries, while having a higher capacity, are very limited in terms of discharge rate. A 7" Quad cruises very efficiently at low current so it will help, but you'll still need to adapt your flying style and fly more calmly than with LiPos.
Propellers
Propellers
There are 2 main choices: Two-blades or three-blades.
Despite their exceptional sound, two-bladed props have significant disadvantages for long-range use. Even brand new they tend to vibrate much more, this can show up on your Gopro footage as "Jello".
If a blade breaks from an impact or natural wear and tear (repeated temperature changes, aging of the plastic), a two-bladed prop will instantly bring you down in a deadroll.If you break a blade on a three-bladed on the other hand you will be able to at least bring the quad to a safe landing despite heavy vibrations, and that's a huge advantage !
I'd still recommend trying them out to get a taste of their sweet low pitched sound.
Video System
Video System
Analog Combo
Analog Combo
Digital Combo
Digital Combo
1.6W output power, excellent cooling, signal is clean : this is the Long Range VTX of choice.
Unbeatable value for money, this is THE analog fpv camera, with incredible image quality, responsiveness and low-light performance.
DJI O4 Pro
DJI O4 Pro
This digital system from DJI needs no introduction.
The frame is very roomy, you'll find TPUs on Printables to mount just about any digital VTX on the market: Walksnail, Hdzero, everything fits the Kayouloin !
Enjoy !
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