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Initially Search & Job interview: Gamux CNC Gearbox Bicycle At Les Gets

Pascal Tinner, CEO of Swiss bike model, Gamux, swapped in for a person of their hurt racers to take a look at a prototype bicycle on the Les Gets Environment Cup course last weekend. The bike is somewhat distinctive: it can be CNC machined in one piece, uses a Pinion gearbox and a large pivot 4-bar suspension style and design. Entire world Cup photographer Ross Bell managed to get an interview and images with Pascal and get the full scoop on the bike. I have edited the transcript of Ross’s job interview for you to examine beneath, but in this article are the crucial information.
Interview between Ross Bell and Pascal Tinner

Ross Bell:
So Pascal, looks like you have been fast paced. What have you been performing on listed here then?

Pascal Tinner:
Yeah. So this is a very first prototype of a CNC milled downhill bicycle that we are functioning on – we are seeking various things. You know, COVID, hasn’t been simple on the bicycle industry, so it truly is really hard to find tubes and other points to weld frames or develop in essence. So we went down yet another route…
This is what we came up with. Now it truly is just validating all the simulations we’ve finished in CAD or 3D and then having this and building it into the future scenario, I guess.

Ross Bell:
Yeah. So you guys started working on new bikes. What was it? Two, probably a few several years back?

Pascal Tinner:
Two a long time in the past. Yeah.

Ross Bell:
This seems like a very large departure from the 1 you experienced past calendar year.

Pascal Tinner:
Yeah. So the bicycle we had very last calendar year is not heading away at this issue. Just our most important rider [Loris Michellod] has a torn ACL. So we took the possibility with the present-day UCI polices to inscribe myself, to be in a position to come check new issues at Globe Cup stage. You will not typically get all those kinds of tracks anywhere else. So this is for sure, much more to foreseeable future oriented in phrases of body manufacturing for us. We’re just evaluating unique things for maybe following 12 months or the year right after. The previous detail isn’t heading away, which is a solid foundation and this is just in which we are possibly heading in the long term.

Ross Bell:
What did you master this weekend on the monitor then? It is really a fairly wild 1.

Pascal Tinner:
Yeah, it can be a rather wild a single! She held up, absolutely nothing broke. So that’s a single point that is normally interesting to see. And then mostly doing work on frame stiffness. It is really quite amazing or really evident right here when you have the slick roots what flex can do for you, and the place it can be truly a lousy thing to have and wherever it’s a good point to have. So it can be extra wonderful tuning flex characteristics of the rear conclude as opposed to the entrance triangle, to locate that nice equilibrium. You can thrust out of ruts and be capable to be precise though even now keeping good grip amounts and good… let us say, make it a bit of a sofa to experience on.

Ross Bell:
And contemplating again to your very last bicycle. What were the places you variety of glimpse to increase on?

Pascal Tinner:
Initial point was sizing. I imagine sizing was a very important issue we worked on. So in the course of the development of the past iteration or the past bike, we figured out quite a handful of points on how distinct angles would impact sizing needs. So this is mainly all incorporated in here just with a different manufacturing technological innovation.

Then we also uncovered a couple of points about diverse rear-close devices. So we went away from this sort of virtual pivot level procedure into a more traditional four bar, just simply because of how the braking forces interact with your driving attributes…

And then we wished also to attempt a little bit much more large or mid pivot to have some benefits of rearward axle route and things. So you will find pretty a handful of points we realized, which we tried out to input into this one. But we’re in no way at the conclusion of the street – mastering retains on heading.

Ross Bell:
And the gearbox, how are you getting that?

Pascal Tinner:
Yeah, at initially I was a bit important simply because you have the kind of a grip change point, but it can be essentially not an challenge. You just will need to system your shifts a little bit much more. So if you f*cked up your change, it’s a bit tougher to get out of due to the fact you can change under load, but not beneath entire load often dependent on which gears you might be in. You have to have to strategy a bit extra, but usually it actually is pretty a gain for your kinematics or your suspension emotion due to the fact you have way considerably less unsprung body weight.

And there is nothing at all you can split. This box has been in a number of distinct prototypes in excess of the very last a person and a 50 % years. And I failed to do any servicing or just about anything. I just bent one particular crank even though performing a 50/50, but that is not the gearbox and she’s still operating sweet.

Ross Bell:
How was it having that body weight centered and great and reduced?

Pascal Tinner:
I kind of examine it to driving a front motor car or truck to a mid-motor car or truck – your bike variety of feels way much more centered. When you, for example, you would start out braking, the fat shift is not as heavy, so you can assume significantly less chassis movement in essence. So that is one particular benefit I find. And then it tends to make the bike experience a little bit extra, how you say, tender and much more on the floor. So you possibly take into consideration dashing up rebound pace a minor bit on the rear just to get that energetic sensation back. But in typical, it is just obtaining an a tractor generally for rough stuff.

Ross Bell:
Then the building as effectively. So I guess we’ve seen it possibly very a ton in the very last couple of several years, but is it type of comparable to what Pole are executing?

Pascal Tinner:
No, Pole is actually machining two 50 %-shells and then bonding it with each other, which is basically I feel a incredibly, really productive way of carrying out issues. For us it is just the bonding know-how we’re not on top rated of correct now. So the key positive aspects for us is we don’t have any welds in this. So we type of can just take simulation from the CAD file way additional seriously due to the fact we really don’t have to aspect in the welds and the welding, which weld goes immediately after which one and all these points, and you really don’t need an expert welder to make a wonderful wanting body. So this is basically me coming up with suggestions, performing a good deal of simulations, investing hours on the computer and then possessing one particular built, and then go…

Ross Bell:
Where by is it currently being made?

Pascal Tinner:
It is been made in Germany really.

Ross Bell:
You men are Swiss?

Pascal Tinner:
Yeah. We are in Switzerland.

At the moment it is really just me mainly because everybody is injured and we do have an less than 17 rider, a growth rider, Mike Huter, who is undertaking magnificent at the minute. He just received his 1st European cup past weekend. And yeah, usually Gamux is a organization with three business enterprise streams. So we do have distribution in Switzerland, for illustration, for Manitou, for Ohlins, for Hayes. So a number of manufacturers. So there’s a distribution business enterprise. Then we do have our frames and our consulting business exactly where we do a ton of stuff in 3D printing, as you have witnessed prior to now in machining as effectively, coming up with our have frames, but also consulting other companies.

And then the 3rd detail and it is genuinely crucial to us (and that’s in which the enthusiasm is): racing. So yeah, we have a tendency to arrive back with a even larger staff in the foreseeable future, but it all is dependent on riders, sponsorship, negotiations, and stuff like this, but for now, yeah, I’m traveling the flag kind of with my tests obligations. So we have a good foundation for Loris and probably some other riders to start racing yet again future period. It’s a bit unfortunate, but accidents happen. And if you have a person rider, essentially a one rider staff in the elites. Yeah. Which is the chance. But we understood that when we came into the year, but we tried to make the most out of it.

Ross Bell:
In phrases of adjustability, it seems to be like very a couple of these pieces you can interchange fairly swiftly?

Pascal Tinner:
Yeah. So there is certainly interchangeable higher shock mounts, lower shock mounts. We can even change the bones to create diverse leverage ratios. And we can transform the dropout. This is just a conventional setting. This is also why there are CNC machined. In the foreseeable future they will go to a 3D printed version just mainly because we can make them considerably, much more quickly. The turnaround, rather of acquiring a thirty day period to hold out, it is like two weeks we can change a ton of things really immediately.

Ross Bell:
So which items are you likely to conclusion up 3D printing you believe?

Pascal Tinner:
Possibly that piece on the rear shock mount that’s in among the bones, almost certainly best shock mount as effectively, and for limited dropouts. I actually by now have some, but we will need to do some machining on them to make the axle suit and things.

Ross Bell:
What’s the upcoming step for you fellas?

Pascal Tinner:
So we’ll be back again in Lenzerheide. We are going to skip Maribor just since there is certainly no feeling in me shelling out a 7 days touring everywhere you go and leaving the business enterprise open up. So we will be again in Lenzerheide, probably with the future iteration of that. Just performing a large amount extra tests. And also it’s our household Environment Cup, so you do not want to permit a Swiss men and women not see what you’ve got been doing. Then we will see for the period soon after what we can come up with. You will find stuff in the works, but you know, things acquire time and to put the signature behind it is at times a little bit additional complicated…

Ross Bell:
Has it received a title yet?

Pascal Tinner:
It does not have a title nevertheless. It has a complex reference, which is TRP 197, which refers to the rear close travel. But yeah, it will have a name sometime, but since the layout will in all probability adjust pretty a bit in the potential…

Ross Bell:
Which is likely the previous issue you’ll do.

Pascal Tinner:
Yeah. It really is like a cable routing and forward bump stoppers or the location to set the stopper or a little something.

Ross Bell:
Just people high-quality particulars?

Pascal Tinner:
It truly is just that you don’t be concerned about that. And then at the past, oh f*ck, there’s a double crown. So I need to set somewhere to… Oh, cable routing, oh f*ck that!