Empire Cycles is proud to announce the birth of the MX-6. This is a six-inch travel, all-mountain, British manufactured product. It boasts both a machined from solid billet 6082T6 aluminium front end and swing arm, and an aircraft grade cast aluminium seat tower. The DNA of the award-winning AP-1 downhill frame (Red Dot Design Award 2010) can easily be appreciated and all Empire supporters can rest assured that the knowledge and expertise have been passed onto the new arrival. The MX-6 is aimed at the growing enduro market: “basically, the intention is that you can kick the living daylights out of it, up hill and down dale, all day”, says Chris Williams (Empire Cycles owner). Chris adds, “I’ve learned an incredible amount from the AP-1 and wanted to produce a product for the all-day warrior”.
The MX-6 uses the known and loved Empire three-piece structure along with the tried and tested swing arm bearing arrangement and seat tower. As with its big brother, the MX-6 is also without welds. Other features include the latest 2 x 10 drive train from Sram, Rock Shox suspension, and Avid brakes. Prices will start from around the £4000 mark for a fully built bike and there will be frame-only and exclusive Hope upgrade options. Look out for the MX-6 as a prototype at events through the Spring and see it on sale in the Summer.
www.empire-cycles.com
Just saying
Raw material loss is relatively minimal compared to other forms of frame construction and the process does not take very long.
Think about Engine block manufacturing and you get an idea of how eficient this process is
What grade aluminum are the other bits made of? Even 6061-t651 can be considered "aircraft grade"
And I'm very skeptical about the fact the front triangle is machined from billet. The amount of setup time, tool wear, scrap produced and multiple operations required would make it very impractical to manufacture. If the article is accurate, then I humbly stand corrected.
So you've got a huge billet, with an insane amount of wastage, massive amounts of maching, so high costs due to tooling wear, a total lack of grain alignment reducing the overall strength compared to the cast frame of the AP-1. After all that, the weight will probably still be excessive as to get the same torsional stiffness as regular tubular frame they'll have to use significantly more metal than you would with a normal tubular frame. There's a reason the bike industry sticks to welded tubes!
Fair one for sticking to his guns and trying to take frame design in a different direction, but personally I think it's a horrendous idea. You never know though, it might actually turn out ok. I sure as hell won't be buying one though.
At the same time it's good to have such techno-diversity, especially when made at "home".
How much machining experience do you have? If it is indeed milled from solid billet, massive won't even begin to describe the job. And mattf is on to something about the grain structure. Unless it is annealed and post-treated (either t4 or t6), then cuts along the grain boundaries produce points for cracks to form.
source: mechanical engineering school
Also, if it's cast, then there's no "grain" to the metal, because it's cast. If it was forged, then I could understand being afraid to cut into the grain.
Oh by the way (and I do apologise for this but i feel it's fitting) your mum is redundant weight.
www.singletrackworld.com/forum/topic/empire-bikes-castcnc-xc-bike
fail spelling mistake...
and yeah ! you would spend more time in washing it than in bulding the bike up ro race