Retrofit crash detection · any motorcycle

Every rider deserves to be found.

CrashCube detects a genuine impact, checks it isn’t a false alarm, and sends your exact position to the people who need it. It fits the bike you already own, and it does not need your phone.

Register interest See the ride data
A rider on a naked motorcycle taking a roundabout on a British road in low evening sun
Alert threshold
3.0 g
Position accuracy
±4 m
Network
LTE Cat-1 / 2G
Enclosure
118 × 53 × 42 mm
01 — The gap

Cars have had automatic crash alerting since 2018. Motorcycles never got it.

The European eCall mandate put a crash-detecting, position-reporting caller into every new car and van. It covers cars and vans only. No equivalent rule exists for motorcycles, and none is coming.

Which leaves the most exposed people on the road as the only ones with nothing between a crash and somebody noticing.

~2%
of the vehicles on the road are motorcycles.
~20%
of the people killed on the road are riding one.
02 — The device
Render of the CrashCube enclosure, lid closed, showing the boot and reset controls and the USB power port
Enclosure v3 · lid closed · 118 × 53 × 42 mm

A sealed box, wired to nothing.

It carries its own cell, its own SIM and its own antennas, so it goes under the seat or in the tail of any bike without cutting into the loom. Prototype figures, current as of testing.

Enclosure
118 × 53 × 42 mm · 2.5 mm wall
Motion
6-axis accelerometer and gyroscope at 181 Hz
Position
GNSS · ±4 m typical
Network
LTE Cat-1, 2G fallback
Alert
SMS and API, with a map link to your contacts
Fitting
Two mounting lugs. No wiring into the bike.
03 — What’s inside

Six parts, and nothing that needs your attention.

Exploded view of the CrashCube enclosure showing the lid, antennas, main board and shell 1 2 3 4 5 6
Exploded assembly · enclosure v3 · drawn from the CAD model
01Sealed lid2.5 mm panel, bolted at four corners
02Boot and resetMoulded flexures — no holes in the shell
03GNSS patch antennaFenced pocket, faces the sky
04LTE antennaFlexible printed circuit, along the shell wall
05Main board110 × 30 mm — modem, GNSS and storage
06Inertial sensorOn its own posts, isolated from the shell
04 — The sequence

A crash is three things, not one number.

A hard impact, at road speed, followed by a bike that stops moving. CrashCube waits for all three before it does anything at all.

T+00.0s
Impact

The sensor registers a hit

Motion is sampled at 181 Hz. A serious impact lands far outside anything ordinary riding produces — a lateral figure around 7 g, against a resting value of 1 g.

T+01.2s
Verification

It checks the hit was real

Peak force, road speed at the moment of impact, and stillness afterwards. A pothole at 60 fails, because you ride on. Dropping the bike in a car park fails, because you were barely moving.

Verified impact
T+01.2s
Cancel window

It asks you first

Thirty seconds. If you are standing up and unhurt, press the button and nothing is sent. If you cannot reach it, the timer runs out and CrashCube carries on.

30 s remaining
T+31.2s
Alert

It sends your position

Coordinates, timestamp and the impact record go out over LTE, falling back to 2G where there is no LTE. Your contacts get a map link.

Position sent
05 — The data

The threshold came off a real bike, not a datasheet.

The hard problem is not detecting a crash. It is not calling for help when there hasn’t been one. So the first thing built was a logger, and the first thing collected was a record of completely ordinary riding.

What ordinary riding actually measures

MT-07 · 85.5 min · 928,000 samples · 181 Hz
Typical ridingMedian sample
1.01 g
Firm braking, hard corners99th percentile
1.44 g
The worst of a bad road99.9th percentile
1.88 g
Hardest knock recordedAnd not a crash
7.53 g

Where the threshold sits. Across 85 minutes of riding, nothing crossed 2 g. Setting the alert at 3 g leaves real headroom above the worst thing a road does to you, which is what keeps false alerts rare.

Why force alone is not enough. The single hardest knock in the whole log — 7.53 g — happened at 4 km/h, walking the bike in a car park. Force alone would have called for help. That is the event that put the speed gate in.

06 — Why we’re building it

If you come off on a back road on your own, the thing that decides how the day ends is how long it takes somebody to find you. A car would have made that call by itself. Your bike does nothing.

So I bought a sensor, bolted it to an MT-07, and started riding with it to find out what ordinary riding actually looks like as numbers. Everything on this page came out of that logger.

Thomas Ward
Founder · CrashCube Ltd
Where we’re up to
Logging real ridesDone
Sensor and enclosureDone
Detection algorithmIn testing
Cellular alertingIn testing
Production hardwareNot started
On saleNot yet

We will say when it ships once we know. Until then this page tells you exactly what exists.

Register interest

We call for help when you can’t.

Leave your details and we will write once, when there is a device to ride with. No newsletter, and we will not pass your address to anyone.

What we do with this is set out in the Privacy Notice. You can ask us to delete it at any time.

Goes straight to us. We reply from a person, usually within a couple of days.

Privacy Notice

CrashCube Ltd · last updated 8 September 2026
Draft. This wording was prepared for a site mockup and has not been reviewed by a solicitor. Have it checked before the site goes live, and delete this notice once it has.

Who we are

CrashCube Ltd, registered in England and Wales, is the data controller for the personal data described here. You can reach us through the enquiry form on this site.

What we collect

Only what you type into the enquiry form: your name, your email address, optionally what you ride, and your message. Nothing else. We do not run analytics, we do not fingerprint your browser, and we do not buy or sell contact lists.

We do not yet operate a device service, so this site collects no ride data, no location data and no crash data. If that changes, this notice changes with it and we will say so plainly.

Why we hold it, and on what basis

To answer you, and to write to you once when there is a device to ride with. Our lawful basis is your consent, given by ticking the box on the form. You can withdraw it at any time and we will delete your details.

How long we keep it

Until you ask us to delete it, or 24 months after our last contact, whichever comes first. Then it goes.

Who else sees it

Nobody outside CrashCube Ltd. We do not share, sell or rent your details. Our email is hosted by a third-party provider, which means your message sits on their servers in the ordinary course of email being email.

Your rights

Under UK GDPR you can ask us to:

Ask through the enquiry form and we will action it within one month. If you think we have handled your data badly you can complain to the Information Commissioner’s Office at ico.org.uk, though we would rather you told us first so we can fix it.

Where your data goes

Nowhere outside CrashCube Ltd and our email provider. This site makes no third-party requests at all — the fonts, photographs, renders and logo are all served from this domain. No content delivery network, no font service, no embedded map, no social widget. Nothing about your visit is shared with anyone.

Our web host records ordinary server logs, including your IP address, as part of running the server. We use them only to keep the site up and secure.

Cookie Notice

CrashCube Ltd · last updated 8 September 2026
Draft. This wording was prepared for a site mockup and has not been reviewed by a solicitor. Have it checked before the site goes live, and delete this notice once it has.

The short version

This site sets no advertising cookies, no analytics cookies and no tracking cookies. There is nothing here following you around.

What we do store

One item, in your browser’s local storage, recording the cookie choice you made so we stop asking. It holds a single value — accepted or declined — and a date. It never leaves your device, we cannot read it, and it identifies nobody. This is strictly necessary to honour your choice, so it is stored whichever way you answer.

Third parties: none

This site makes no requests to anyone but this domain. The typefaces, photographs, product renders and logo are all served from crashcube.co.uk. There is no content delivery network, no Google Fonts, no analytics service, no embedded video, no social button. Nothing on this page reports your visit to anybody.

That is why you were not asked to accept cookies: there is nothing to accept.

If that changes

If we ever add something that does set cookies or call another company — analytics, for instance — a consent banner will appear and nothing will load until you agree to it. We will update this notice and change the date at the top.

Terms of Use

CrashCube Ltd · last updated 8 September 2026
Draft. This wording was prepared for a site mockup and has not been reviewed by a solicitor. Have it checked before the site goes live, and delete this notice once it has.

Read this part if you read nothing else

CrashCube is a prototype. It is not a certified safety device, it is not an emergency service, and it is not for sale. Nothing described on this site is available to buy or to rely on. Never let anything here change how you ride, what protective equipment you wear, or how you would summon help.

If you are in an emergency, call 999. No device replaces that.

What this site is

A description of a product in development, published so people can follow the work and register interest. Specifications, figures and timings are drawn from prototype testing and will change. They are not a promise about a finished product, and they are not a warranty.

The figures we quote

Test data on this site comes from our own logging on a single motorcycle. It is honest about what we measured and it is a small sample. Treat it as evidence of our method, not as a performance guarantee.

Using the site

You may read it, share links to it, and quote it with attribution. You may not copy the design, photography, renders or the CrashCube name and logo for your own use without asking. Do not attempt to disrupt the site or use the enquiry form to send unlawful, abusive or bulk unsolicited material.

Liability

The site is provided as it is. To the fullest extent the law allows, CrashCube Ltd is not liable for loss arising from reliance on anything published here. Nothing in these terms limits liability for death or personal injury caused by our negligence, for fraud, or for anything else that cannot lawfully be excluded.

Governing law

These terms are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction.

Changes

We will update these terms as the product develops, and the date at the top will change when we do.

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Remembers the choice you make here, so we stop asking. Stored on your device only. Cannot be switched off without breaking the question itself.
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