Take two lumps of metal and one determined rider

Putting established brands to shame, a lad called Euan has spent the past few months honing and fine-tuning this exquisitely detailed CNC’d enduro machine.

>>> Why Pole’s enduro bike is Machined from billets of solid aerospace aluminium

The UK has always been a hotbed of shed based master craftsmen and the number of home-grown, small bike brands has been skyrocketing over the past few years.

Now it’s the turn of Portsmouth based Euan Beaden and his insane looking, CNC machined beauty.

Euan CNC machined the whole deal from two solid billets of 6082 aluminium by himself, after designing and testing using FEA (Finite Element Analysis). Luckily for Euan his day job is as a CNC machinist and toolmaker so he was able to approach the project with confidence in making a good go at it.

We spoke to Euan to find out what drove him to make his own bike:

So the frame was based on my Nukeproof Mega AM Pro frame from 2013, which is a 26” All-Mountain bike. I used the parts you can seed from that bike and chose the geometry based on that as well.

The actual frame design was purely my own choice plus some extra lattice work used to strengthen the main structures.

The materials used are predominantly 6082 aluminium which has good machinability but with also pre-heat treatment to help with the strength.

The swing arm was the first to get machined as I knew this would be the most complex part. The billet for it weighed in at 80kg and took over 5 set ups, 4 sets of jigs and over 100 hours of machining time.

The main triangle weighed in a similar amount (maybe slightly heavier), and took 5 set ups also; but some set ups were only drilling compound-angle holes such as the seat post.

The intended geometry as I said above was based on my Mega; so the head angle is a slack 66 degrees and the rear travel had to be 160mm of vertical travel. This was hard to work out as many different designs for pivot points had to be used before I found the ‘sweet spot’ which resulted in the shock being bottomed out but also achieving 160mm wheel travel. I also had to make sure the tyre wouldn’t hit the seat tube on full travel also.

My back ground is a Toolmaker thanks to my apprenticeship, but I’m still continuing further education to enhance my skills and qualifications. Currently I am completing a HND in mechanical engineering but plan to go on to a degree this year. This frame was part of my HNC Level 4 Engineering Project last year which I completed at South Downs College, portsmouth.

I am 22 years old, and finished my apprenticeship in late 2016. A dream job would be machining bicycle components hence me jumping at my frame opportunity!

Euan’s CNC’d enduro bike is unlike anything else. Photo: Henry Vacher

That’s just two pieces of metal. Photo: Henry Vacher

That swingarm looks Solid with a capital S. Photo: Henry Vacher

The capped bolt through axle and integrated derailleur change keep the back end looking clean. Photo: Henry Vacher

The seat tube takes a normal dropper post. Look at the details in the machining. Photo: Henry Vacher

Take a look at Euan’s Facebook post for more images.