Review: X-Racer X1 Micro Racing Drone – the Tiny Whoop Killer!

by Oscar

Seriously, the X-Racer X1 could be the Tiny Whoop killer. In this review we are going to have a look at the micro racing drone that FPVModel spent a long time developing.

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Further Reading: Here are some of the best Tiny Whoops on the market.

When I first got the X-Racer X1, I was thinking “okay, another Tiny Whoop lookalike”. But after trying it the first time I knew I was wrong. This is going to replace my tiny whoop, big time!

The X1 is available at FPVModel:

Content of XRacer X1

There are 2 versions, one is the BNF (bind and fly) which come assembled and only requires binding to TX. The other version is a DIY Kit that requires user assembly. We got the latter.

The DIY kit includes the following items:

  • FC with VTX/Camera already soldered together
  • 4 motors
  • 2 sets of props (8 in total)
  • frame and canopy
  • 2 LiPo batteries
  • USB LiPo charger
  • stickers
  • soft shell box

What’s special about the X1 micro quad?

Flight Controller and Receiver

The X1 comes with a F3 flight controller. It’s developed by FPVModel and runs Betaflight firmware, which means you have full control of the PID, rates and expo. It has a built-in RX that is compatible with Frsky Taranis QX7, X9D, Horus and XJT modules.

The mounting pattern is exactly the same as the tiny whoop: adjacent screws at 25.5mm, diagonal screws at 37mm.

7mm Motors

The included motors look similar to the ones on a Tiny Whoop, but don’t let the appearance fool you. The original tiny whoop and E010 motors are 6mm diameter brushed motors, while the X1 uses bigger 7mm motors! It has so much more power than the 6mm motor and that makes the most significant difference in the whole setup IMO.

The X1 hovers at 40% throttle while the E010 with FPV Setup hovers at 55% to 60%. I found the Tiny Whoop would quickly lose altitude when flying fast, and that’s not the case with the X1.

You might be asking, can we not use 7mm motors in Tiny whoop? The answer is NO due to the size limitation of motor holders in the frame. The FET’s current rating might not meet the requirement either (FET’s are the tiny “ESC” for brushed motors on the FC ). Most Tiny Whoop FC’s are rated for 6mm motors only.

Frame and Canopy

The canopy and frame are made of flexible plastic. The canopy is designed to protect all the electronics: FC and VTX/Camera.

HV LiPo Batteries

The last special feature is the batteries that come with it – HV LiPo batteries! Normal LiPo batteries can be charged up to 4.20V, while these HV packs allow you to charge them up to 4.35V!

HV LiPo are known for storing higher voltage and more capacity than normal lipo in the same size and weight. However there have been reports about issues with longevity with some 4S HV batteries recently. We will confirm if this is an issue with these tiny 1S HV batteries once we have used them long enough.

The 1S 250mah 60C HV Lipo weights 6.5g. Flight time is about 3 mins with these HV batteries. (not hovering, but actual flying around)

X-Racer X1 Size Comparison to the Tiny Whoop

Despite the more powerful setup, the X1 is identical to the Tiny Whoop/E010 in terms of size. And thanks to the compact design it’s actually shorter in height.

Assembly and Setup

Unfortunately, there is no assembly instruction but luckily it wasn’t too difficult to put together.


First install all 4 motors in the frame. Note that motors orders are different from other brushed quads, both motors in the front have “black & white” wires, and “red & blue” are in the rear. I actually made a mistake in some of these pictures so please be aware.

Update 20/Apr/2017

I asked FPVModel about this motor order, and they confirmed it’s just a mistake they made in the demo units (only 20 of them, including the one I have). They will fix this problem in the production unit, and it will follow the traditional motor order like other brushed micro quad. So it’s best if you stick to official assembly manual.

When powering brushed motors the wrong polarity, it might work but the motor will die much quicker, and you are not using 100% of the power. Discussion about it here:

FC and FPV setup

Then install the FC, with 4 vibration dampeners and screws. VTX is stacked on top of the FC with double sided tape. It’s important to make sure there is no direct contact between FC and VTX PCB in case of electrical shorts.

And the camera is placed in the designated holder in the frame.

Flip the quadcopter over, twist the motor wires and plug them in to the FC.



And during assembling, I encountered a problem with the canopy, it simply wouldn’t close. I traced the issue back to the VTX, which is lifted a few millimeter higher than it should be by the rear screw and VTX antenna.

There is no way I could get it to fit, so in the end I had to use rubber bend to hold the canopy in place.

I reported the issue to FPVModel, but we couldn’t find an answer as they have not had report of this problem before. Maybe it’s just a weird issue with this particular unit.

Rubber band fix is pretty ugly, but at least it gets me going for now. VTX is definitely pushing on the canopy. The button could hit the canopy in crashes, which changes the channel unexpectedly. LOL :(


The quadcopter weights 34g with the 250mah battery, 27.5g without.

RX binding

Radio binding is very simple:

  • Hold down bind button on the FC (there are somehow 2 bind buttons on the FC, but it seems only the one closer to the front works, the one on the right didn’t work for me)
  • Power on the quad, there should be an LED constantly flashing
  • Turn on your Taranis, put it in D8 mode
  • Enter bind mode, once they are bound the flashing LED on FC should turn off

FPV Setup

Let’s take a closer look at the FPV setup. the XRacer X1 has a 25mW Micro 5.8GHz 48ch VTX with Dipole antenna on board.

Range wise, it’s comparable to the FX797 which is on my E010. But it doesn’t penetrate walls as well as the FX797 maybe because of the type of antenna used (cloverleaf on FX797). But for durability, the dipole is much better.

The X1 FPV setup has a higher contrast and smaller FOV as you can see in the images below (FX797 on the left, X1 on the right).

Betaflight Settings and PID

The flight controller came nearly configured, default PID worked well, I only had to change rate to make it fly the way I want.

I left PID at default and my rate is:

set deadband = 4 set yaw_deadband = 4 set rc_rate = 85 set rc_rate_yaw = 75 set rc_expo = 10 set rc_yaw_expo = 10 set thr_mid = 45 set thr_expo = 15

I also changed Gyro refresh rate and PID loop frequency to 4K/4K. I tried higher, but CPU load shoot up to 100% when gyro is 8K (it’s probably using i2c bus with gyro). Micro quad this size wouldn’t benefit much from faster looptime anyway so it’s completely fine.


It’s a great quad! With a few more adjustment I think it could make a perfect indoor flying machine.

Good Things

  • So much more powerful than Tiny whoop, yet good flight time
  • Great price for what you get, it will be way more expensive to upgrade the tiny whoop
  • Really easy to assemble and get running, no soldering required
  • Robust VTX, antenna and camera design concept, they are well protected against crashes
  • Comes with a nice box for transportation

But it need some improvements!

  • It would be nice to have VBAT added to it, and some form of telemetry to report voltage
  • Maybe it was just me, but I wasn’t very happy about the canopy design. I think maybe they can make it taller to leaves more room for the VTX
  • I would also suggest to replace HV LiPo with normal LiPo, and offer HV LiPo as an upgrade option perhaps. Not everyone has a charger that is capable of charging HV LiPo, and the charger that comes with the X1 only charge up to 4.2V, so not everyone will benefit from HV batteries
  • It would be nice to use the efficient duct design in the frame, like the Tiny Whoop
  • Please provide assembly and setup guide

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Niels 4th October 2018 - 1:39 pm


Is the X Racer X1 V2 also compatible with the Flysky FS – i6s?

Oscar 4th October 2018 - 6:51 pm

nope it isn’t

Nav 25th May 2018 - 5:24 am

how do i update this to the latest beta flight? cant find out boot button. Cheers

peter 2nd May 2018 - 6:38 am

Hi Oscar,
What was the target in the betaflight firmware?
Thanks :)

Oscar 9th May 2018 - 12:18 pm

I don’t know if the target name has been changed because it’s been a long time.

Sweyn 2nd January 2018 - 6:53 pm

Both the batteries have died within 7 days. I’ve always stopped immediately as soon as it starts to lose power. Anybody else found poor battery life?

david 21st December 2017 - 3:22 pm

Hi Oscar,
thanks for this good review of x-racer x1
i finally bought one with 4 X-racer Batteries HV Lipos directly on FPV Model (Europe)
Quality is really good and packaging is well thought.
Unfortunately, flight time is really too low (i fly max 2min30s with new LiPos 8-(
and my VTX seems to be “blurry” (i try to move the Lens but it is glued).
I plan to change the VTX (i love the FX978 image) but i am still looking for a solution for a bigger battery…
Any good experience with bigger battery (than 250 mAh) ?

Jen 16th December 2017 - 8:31 pm

Has anyone had issues binding the X-1 with QX7? I cannot get it to bind

Oscar 3rd January 2018 - 1:10 pm

Mismatched TX/RX firmware? Make sure they are both using LBT or International firmware

Andrew 26th October 2017 - 7:38 am

Hi Oscar. I’ve ordered two and both have a problem where the front right motor spins continuously once the battery is connected. Any ideas what the problem is or how to solve it? I can’t power up the other motors either.

turbopulu 14th September 2017 - 8:44 am

Anyone actually tried using these 7mm motors on beecore etc (tiny whoop). I’m tempted, but if it’s only going to smoke it…

Wes Beckwith 12th August 2017 - 5:46 pm

Oscar, I loved your review of the X-1. I had some questions for you. I have gone through 2 of these, both seem to develop issues with the FC after a short time.

They both get noticeably warm just plugged into the USB port on the computer to configure Beta Flight.

Then while plugging the battery to test the motors the first one I received, the motors went to full speed and just shut off. The unit was dead after that. The second unit while testing the motors, motor #3 won’t turn off. It runs at idle and won’t stop.

I was wondering if you or anyone else experienced any issues with the X-Racer. I REALLY like the design and want this to work, it is very frustrating to have these issues.

Oscar 13th August 2017 - 4:18 pm

Wes, Sorry I have not seen this issue myself. I do hope you can report this to FPVModel and see what they make of it? Sounds like just bad hardware to me.

Andrew Young 17th September 2017 - 12:46 pm

I have been running one of these for a while now.. Few months no issues at all.

Dima 13th July 2017 - 10:45 am

Hi Oscar
Like Franz, I’m on Spektrum gear but really want try one of these out. I can buy all the parts separately, but leave out the FC that has the built in rx. What is the distance between the 4 mounting holes on the frame? Hopefully, if can find an FC that will fit I’m going to go ahead with buying all the bits for the build.

Dima 15th July 2017 - 9:24 am

Doh. I should have read the blog more carefully because the answer is there. Please ignore my last question

Philippe 12th July 2017 - 12:57 am

Hi Oscar,

Well I don’t know where the problem comes from, but mine isn’t having enough trust to even hover.
It worked quite well for some few flights (like 5), but now, impossible to lift.

I’ve switched motors like you said, having both B&W in front and B&R in the back, but no luck so far.
(it came pre assembled, with a mix B&W / B&R in front and back)

I’m in brushed protocol with 4000 pwm.
Could it be prematured motor problems due to incorrect motor polarity?

Oscar 12th July 2017 - 4:22 pm

can you check the battery voltage, make sure they are fully charged? should read 4.2V+.
check your throttle in Betaflight GUI, receiver tab, make sure you have full range of signal (1000 to 2000)

Philippe 13th July 2017 - 11:58 pm

hum no luck. I doubled checked your hints, no game. I replaced the motors, no game. The FC appears to reboot and bug. Would you eventually know what type of FC is inside so I can reflash with betaflight? SPracingf3evo ?

Oscar 16th July 2017 - 3:07 pm

The Target is “X_RACERSPI”.
I would suggest contact FPVModel and see if they could give you a hint, or possibly a replacement..

Mugz 3rd June 2017 - 9:49 am

Hi there!
Someone can give me full dump x-1 and resource output also? After updating to betaflight 3.1.7 I completely lost control to frsky receiver

Mugz 9th June 2017 - 5:05 pm

ADD: Please do not update stock Betaflight! You will lost control of receiver!

Scott A Lazaruk 3rd June 2017 - 6:16 am

Agreed Oscar great quad … a couple minor additions would make it incredible.
Some outdoor FPV footage:

Matt 29th May 2017 - 8:51 pm

I got one of these and it flies pretty well. So far I have only put 3 packs through it. I already crashed it into a lampost at speed and broke one of the motor struts. Do you think an E010 frame will work as a replacement, or should I get an original replacement frame from fpvmodel?

Oscar 30th May 2017 - 11:52 am

no you will need to buy it from FPVModel, motor sizes are different.
I think you might be able to fix it with hotglue though, I have seen other people doing that.

Franz 5th May 2017 - 10:13 am

Hi@all, i have a Spektrum DX8 transmitter, can i bind X1 to that? THX for your info

Greetings F.

Oscar 15th May 2017 - 2:11 pm

no it only supports Frsky (as far as i know)

Vlad 26th April 2017 - 1:10 pm

Hi Oscar,
Im looking at getting a Makefire Micro and the description of the item indicated that Taranis X9D plus is supported.
I have a Taranis without any modules or anything. Would this or that makefire connect to it?

Ive seen various YT videos where people are using 4in1 module or orange RX to connect to these micros..

Can you please help me understand?


Oscar 26th April 2017 - 9:37 pm

if it says Taranis compatible then I don’t think you will need extra module, but check with sellers to confirm.

Von Pwnz0r 20th April 2017 - 1:16 pm

It says 34 grams for quad. That seems a bit excessive, are you sure you got it right?

Oscar 26th April 2017 - 9:17 pm

yes 34g with lipo battery. 27.5g without battery.

crimsonfancy 19th April 2017 - 5:58 am

Looks great at a great price! I’d get one for sure…maybe a few months down the road and by that time hopefully they’ll address the very few concerns (no deal breakers at all but would rather not do the rubber band ;-) )
Thanks for the review and product link.