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When we were developing Railhop Cranks, we had two tasks:
Protect the medial malleolus (the bone bulging out on the ankle) from sharp edges of the cranks.
Design and implement the world's strongest cranks
When we were developing Railhop Cranks, we had two tasks:
Protect the medial malleolus (the bone bulging out on the ankle) from sharp edges of the cranks.
Design and produce the world's strongest cranks
What did we do?
We shortened the profile of the crank by 10% compared with the first version. According to our statistics, this change drastically reduced the frequency of ankle injuries.
For the production of STRESS cranks, we used heat-treated steel of a Japanese brand. This is the best steel available on the market.
BMX cranks are exposed to huge and very specific loads. Thanks to the extensive experience we have gained over the years of riding our bikes, collecting statistics and testing, we now know that tubes with a "rectangular" section are the best for BMX cranks.
Gusset
We have developed and introduce a gusset on cranks back in the 2013, which was produced to make cranks stronger, as well as to reduce the number of injuries to the medial malleolus. The gusset smoothes out the angles, practically excluding the possibility of getting a deep cut. For the production of the gusset, chromoly steel is used, which is cast in a special form. Then it is welded over the entire mounting area of the cranks to the spindle. Then the top of the seam is further polished to create a flat and smooth surface.
Press cube to see 3d model
Press image to enlarge (specs are bellow)
Features:
lifetime warranty
cro-mo 4130
heat-treated
2.5 piece
176 mm and 165 mm
22 mm spindle
sprocket mounts on both sides
color: matte black and chrome
weight: 907 grams with bolts (848 grams without bolts)
Press the cube to see 3d model of the cranks
We shortened the profile of the crank by 10% compared with the first version. According to our calculations, this change reduced the frequency of ankle injuries by about 40%.
BMX cranks are exposed to huge and very specific loads. Thanks to the extensive experience we have gained over the years of riding our bikes, collecting statistics and testing, we now know that tubes with a "rectangular" section are the best for BMX cranks.
For the production of STRESS cranks, we used heat-treated steel of a Japanese Sanko brand. This is the best steel available on the market.
Gusset
We have developed and introduce a gusset on cranks back in the 2013, which was produced to make cranks stronger, as well as to reduce the number of injuries to the medial malleolus. The gusset smoothes out the angles, practically excluding the possibility of getting a deep cut. For the production of the gusset, chromoly steel is used, which is cast in a special form. Then it is welded over the entire mounting area of the cranks to the spindle. Then the top of the seam is further polished to create a flat and smooth surface.
Features:
lifetime warranty
cro-mo 4130
heat-treated
2.5 piece
176 mm and 165 mm
22 mm spindle
sprocket mounts on both sides
color: matte black and chrome
weight: 907 grams with bolts (848 grams without bolts)