BH Ultralight is the name of its car, frame weight is only 807g (small frame, with seatpost, tail hook and bottle cage screws)
The frame carbon fiber parts (including the paint surface) are close to the 747g weight of the BH frame called the 56cm frame. We measured the 54cm frame and the weight was slightly different, which was 768g. Despite this it is still light and amazing. Tim Jackson, BH’s US marketing manager, told reporters: “We've made 725g of them.†The all-carbon 1-1/8 to 1-1/2 inch conical front fork (200mm steerer) only increased 279g weight.
Complete vehicle with DURA-ACE 7900 mechanical kit (including 7900-C24 TL wheelset and inner tube), FSA and TRP parts, vehicle weight is 6.31kg (without foot pedal), price is US$8,599, configuration is slightly different UK version - Use Cole Ventoux or Mavic R-SYS SL wheels for £7,999.
According to BH, weight is just one of Ultralight's strengths. Another, more important feature is that it is the best rigid frame BH currently has.
"For us, lightweight is indeed a great success, and everyone is willing to show off this, but in fact rigidity is the most fundamental." Jackson said, "Even if it is light, if the frame is soft, it will Loss of pedaling efficiency. So Pivot/BH USA's chairman, Chris, has always emphasized that rigidity is fundamental to cycling."
Conical head pipe and BB386 EVO five-way pipe can make the lower tube very thick
BH uses the "carbon fiber mixing and advanced molding technology developed specifically for F1" to achieve the desired rigidity of Ultralight. The frame uses a shell-like module structure to achieve the proper riding characteristics. Each part consists of several pieces - the upper tube, the lower tube and the head tube are all made of a single mold, which can increase the rigidity and strength.
The front end of the car, the conical head pipe and the front fork rudder tube are connected with larger upper and lower pipes, which further enhances the steering rigidity. The new Ultralight also uses the BB386EVO mid-axis system, which allows the lower tube to be made wider and also provides more room for the lower chain.
BB386 has quickly begun to be applied to road vehicles
Jackson said that the generousness of the five-way part not only improves rigidity but also facilitates the use of better molding technology. "We used a new advanced molding technology, which was only used by two manufacturers before." He said, "It offers higher compressibility. BB386 does play a big role in the lower part of the frame, because The five-way part is very large, and you can go deeper when doing the post-snapping model — it's usually a blind spot.
This technique uses "ultimate" vacuum pressure during molding, which, according to Jackson, is the hardest frame in BH history. He said: "I use the XL frame. My weight is 95 kg. I like flat road sprints. I tell you that Ultralight is harder than my G5."
Ultralight's fork is very slim, which seems to have become the current trend of ultra-light frame
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