◆ I have a question about the grade of the frame. I understand that the difference between S and SL is the difference between tubes, but is the difference weight? For rigidity, riding comfort, comfort, etc., can you get what you want even with S if you close your eyes on the weight?

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

At Seven, the distribution of rigidity can be freely controlled by selecting the tube (thickness, thickness) and how to combine them, regardless of the material, and it can be hard or soft according to the rider's request. By communicating the image firmly at the design stage, the ideal drawing will be completed. (Some people say it's hard or soft just because it's made of titanium, but it's a completely familiar head, so please ignore it ...)

Of course, Seven does the best job with steel, but since it is a workshop that is good at titanium, I want to order with titanium. That's enough for S, but what's even more amazing about Seven is that the titanium material can be butted in our own factory. When this happens, you will be interested in SL.

Butted tubing, that is, thick tubing where stiffness and strength are required, and thin and light tubing where it is not, allows for more flexible stiffness distribution. If SL is selected for Seven, the tubes will be butted one by one according to the design. In other words, the tube set itself can be assembled with a special material that is customized according to the order.

There are many places to make custom-made titanium frames, but even if you look around the world, only Seven can custom-make butted tubes according to the rider. Butted processing is a difficult task, requires large-scale equipment, and takes time. As you know, titanium is a hard material, so it consumes a lot of equipment and costs money. It appears in the price difference between S and SL, but if the effect is only a few tens of grams lighter. .. .. It's a natural question.

In fact, SL is lighter than S, but its biggest advantage is that it has a more precise distribution of rigidity than its visible weight of tens of grams. The ideal rigidity distribution can be achieved by assembling the right material in the right place even with a plain pipe, but using a butted tube enables a more flexible, accurate and lean layout. It offers riders far more benefits than the lightened tens of grams.

What are the benefits of flexible stiffness distribution?
Riders have different physical and demands. Sometimes the bike is the decisive weapon for the race you really want to win, and sometimes it's important how comfortable you can enjoy your 100km touring every weekend. Some people feel comfortable with a crunchy and agile bike, while others want a supple and laid-back ride. Ages, careers and weights vary. The ability to accurately distribute rigidity makes it possible to meet each of these demands at a higher level.

So what about SLX and higher grades? I think this is also a natural question.
Furthermore, the grade frame that is mixed with multi-stage butted and carbon tube is for riders who absolutely need lightness such as hill climb. It is related to the rider's weight, leg strength, etc., but if you pursue lightness more than SLX, there will be a part where rigidity will be sacrificed, so if it is not for such use, you can get the best frame in SL. That is.

Even with the S grade, you can create a comfortable 100-point titanium bike with the ideal balance of weight and rigidity. However, Seven has aimed to achieve 120 points in the history of technological improvement, and has realized the making of motorcycles by in-house butted processing.


◆ How is Seven's Max Power Seat Post different from regular Ti Seat Post?

Max Power Seatpost is a custom made seatpost. Like the SL grade frame, it is a special design that determines the required length and butted position according to the customer's request.
The main body is a butted 30.9mm diameter ultra-thin titanium tube, which is harder and lighter than the average 27.2mm diameter seatpost. A more stable position provides a more efficient pedal stroke. 
The normal Ti seatpost is a plain tube.


◆ It is said that the Seven Matador Disc Fork has a fender dowel. Is it possible to use a pannier rack or front rack using this in terms of strength?

It is not recommended to use the matador fork with the rack attached.
This does not mean that the fork is not strong = the fork is weak, and since it is not supposed to be used in the first place, it has not been tested for durability under load, and even if a failure / accident occurs due to mounting the rack. It means that Seven cannot guarantee it.


◆ Although it is slight, I found that the frame is distorted. I think that the damage caused by falling cars over the years has accumulated. Will Seven correct the frame?

Of course, Seven accepts frame alignment adjustments.
The cost will be ¥ 120,000 (excluding tax) including the round-trip shipping fee 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, often cold and straightened with slow heating, depending on the magnitude of the strain.


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