Gamux Bikes, designers of the one belt-driven gearbox mountain bike racing the UCI Lenzerheide World Cup DH this weekend, have two new mountain bikes underneath improvement. That includes a novel cnc-machined rear-end that the Swiss model has develop into identified for, the Gamux path bike delivers its 150mm rear wheel journey through a Horst-Hyperlink. In the meantime, the 130mm journey Downcountry bike will see a full carbon building, using a lighter weight flex-pivot suspension platform.
Gamux Engineer, Pascal Tinner, gave us a run down of what’s to come back in 2024.
Prototype Gamux All-Mtn Bike
Designed round a 150mm journey rear-end, the Gamux Path/All-Mtn Bike will take a 150mm or a 160mm fork. A carbon entrance triangle is paired with cnc-machined chainstays, seatstays, hyperlink and shock yoke.
Pascal tells us that Gamux actually get pleasure from working with aluminum, particularly because the cnc machining they’ll do is a extremely correct manufacturing methodology. It permits them to fine-tune flex traits by various the structure of the stays.
To extend or lower stiffness of the rear-end in any approach shouldn’t be merely a matter of including or eradicating materials; it might truly require a special geometry within the construction of the stays.
The preliminary prototype noticed a C-shape sample within the stays, however this produced a rear-end that was too stiff laterally, and so Gamux reworked the design to supply the triangulated buildings seen on the present prototype. This one is alleged to ship extra grip in cornering eventualities.
Pascal tells us Gamux is tuning the all-mountain bike to offer consolation for day-long pedalling missions on comparatively mellow trails, versus Bike Park, with a geometry that’s succesful sufficient to sort out steeper, extra committing descents if required. He does say, nonetheless, that for those who’re eager on hammering down enduro race levels, most likely extra journey and a slacker geometry could be helpful.
With that in thoughts, this prototype has a 78° seat tube angle and a 65° head tube angle with a 150mm fork.
The bike shall be out there as an entire 29er, or as a mullet. Right here on the prototype there’s a flip-chip on the seat-stay. In 29er mode, the bike has two geometry settings out there, however the mullet may have a single geometry, with the flip-chip merely correcting the geometry modifications ensuing from use of a smaller rear wheel.
Gamux will produce two sizes of the all-mountain bike, initially. Attain choices will embrace 470 mm and 485 mm, with goal clients within the 172 cm to 185 cm top vary. Chainstay size shall be body measurement particular; round 445mm on the smaller body, and longer for the bigger measurement.
We’re advised the carbon entrance triangle weighs round 1 kg, with the frameset with out shock will weigh round 2.6 kg. That is nonetheless to be confirmed, as Gamux remains to be engaged on tuning the carbon layup of the entrance triangle to realize the specified flex traits.
Gamux Downcountry
The Gamux downcountry bike will swap out the Horst pivot for a flex-pivot, whereby engineered seat keep flex will make up for the shortage of a pivot on the chainstay. With decreased {hardware} necessities, this can be a a lot lighter strategy to ship an environment friendly suspension platform, and because of this it’s used virtually ubiquitously on modern-day cross-country race bikes.
Pascal says the downcountry bike may have a extra direct pedalling really feel than the all-mountain bike. It is going to be designed round 130mm journey, with a 130/140mm fork, however it will likely be doable to run it with a shorter stroke shock for extra of a XC setup.
Two body choices are deliberate for this one; the usual body choice will weigh in across the 2 kg mark, whereas a super-light model will weigh a bit much less – how a lot precisely remains to be to be confirmed.
Gamux plan a pre-production run of frames this summer time, with manufacturing bikes out there to clients in early 2024. Pricing will are available in at across the 5,000 CHF mark.
