Review on FOMTOR 31.8 Bike Stem With 35 Degree Rise And Length Options Of 70Mm, 90Mm, And 110Mm - Ideal For 1.25" Handlebar Mountain Bikes, Road Bikes, MTBs, And BMXs by Chris Webb

Name: FOMTOR 31.8 Bike Stem With 35 Degree Rise And Length Options Of 70Mm, 90Mm, And 110Mm - Ideal For 1.25" Handlebar Mountain Bikes, Road Bikes, MTBs, And BMXs
Item: FOMTOR 31.8 Bike Stem With 35 Degree Rise And Length Options Of 70Mm, 90Mm, And 110Mm - Ideal For 1.25" Handlebar Mountain Bikes, Road Bikes, MTBs, And BMXs
Rating: 5

August 06, 2023

Perfect for riser. Geometry calculations here.

Lightweight and perfect. Keep in mind when you get a 70mm stem with a riser, the functional length is not 70 degrees but less. You have to use a geometry calculator to figure it out (or do a rough estimate). Think of it like a right triangle, the center of the bars/tube are points, and the 70mm is the hypotenuse. With the rise angle being 35 degrees, the actual rise therefore is 40mm and the functional stem length (added reach) is 57mm.

Pros

Excelente potencia

Cons

The product description is misleading

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