◆I have a question about the grade of the frame. I understand that the difference between S and SL is the difference in tubes, but is the difference in weight? Is it possible to get what you want in the S if you ignore the weight, such as rigidity, ride comfort, and comfort?

The difference between S and SL is whether it is a plain tube or a butted tube.

With SEVEN, regardless of the material, the distribution of stiffness can be freely controlled by selecting tubes (thickness, thickness) and how they are combined, making it hard or soft according to the rider's request. By conveying the image firmly at the design stage, the ideal drawing will be completed. (There are people who say that it is hard or soft just because it is made of titanium, but please ignore it because it is a complete know-it-all...)

Of course, Seven does the best work with steel, but since it is a workshop that specializes in titanium, I want to order titanium. If that's all it is, the S is enough, but what's even more amazing about SEVEN is that the titanium material can be butted in our own factory. When it comes to this, I'm still interested in SL.

The use of butted tubes, that is, tubes that are thicker where stiffness and strength are needed and thinner and lighter where they are not, allows for a more flexible distribution of stiffness. If you choose SL for Seven, the tubes are butted one by one according to the design. In other words, the tube set itself is also made up of a frame made of special materials that are custom made to order.

There are many places that make custom-made titanium frames, but SEVEN is the only place in the world that custom-makes the butted pipes according to the rider. Butting is a labor intensive process that requires large-scale equipment and takes time. As you know, titanium is a hard material, so it consumes a lot of equipment and costs a lot. This is also reflected in the price difference between S and SL, but if the effect is only a few dozen grams of weight reduction. . . It is a natural question.

In fact, the SL is lighter than the S, but the biggest advantage is the more precise distribution of stiffness than the visible lightness of several tens of grams. Even with plain tubes, the ideal rigidity distribution can be achieved by assembling the right materials in the right places, but if you use butted tubes, you can achieve even more flexible, precise, and efficient layouts. That's a far greater benefit to the rider than just a few dozen grams lighter.

Flexible stiffness distribution, what are its benefits?
Riders have different physics and different demands. Sometimes the bike is the decisive weapon for the race you really want to win, and sometimes it's important to be able to enjoy the 100km touring every weekend. Some people like a bike that's crisp and agile, while others want a supple, laid-back ride. All ages, careers, and weights. Being able to distribute rigidity precisely makes it possible to respond to each of these demands at a higher level.

So what if the grade is SLX or higher? I think it's a legitimate question as well.
In addition, the grade frame mixed with multi-stage butting and carbon tubes is for riders who absolutely need lightness such as hill climbs. It has something to do with the rider's weight and leg strength, but if you pursue a lighter weight than the SLX, you'll end up sacrificing rigidity. That's it.

Even with the S grade, a comfortable 100-point titanium bike with the ideal balance of weight and rigidity is completed. However, Seven aimed for 120 points in the history of technological improvement, and realized motorcycle manufacturing by in-house butting processing. It's a story that will make your wallet cry, but please take your time and worry about it.

◆What is the difference between Seven's Max Power Seat Post and regular Ti Seat Post?

The Max Power seatpost is a custom made seatpost. Like the SL grade frame, it is a dedicated design that determines the necessary length and butted position according to the customer's request.
The main body is a butted 30.9mm ultra-thin titanium tube, which is stiffer and lighter than a standard 27.2mm seatpost. A more stable position results in a more efficient pedal stroke.
The stock Ti seatpost is a plain tube.

◆I heard that the Seven Matador Disc Fork has fender dowels, but is it possible to use this for pannier racks and front racks in terms of strength?

It is not recommended to use the rack on the matador fork.
This does not mean that the fork is weak, but it is not intended for such use in the first place. Seven cannot guarantee it.

◆ Although it is minor, we found that the frame was distorted. I think that the damage caused by falling over the years is accumulating. Can you fix the frames at Seven?

Of course, SEVEN accepts frame alignment adjustments.
The cost is ¥120,000 (excluding tax) including round-trip shipping between Japan and the United States. This cost includes alignment, surface polishing and replacement with new decals.
The frame is placed on an alignment jig, and in many cases it is straightened by cold or slow heating depending on the magnitude of the distortion.
Please contact your nearest SimWorks dealer .

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