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Monolith Tool
เข้าร่วมเมื่อ 1 ธ.ค. 2021
Videos for Monolith Tool products & ideas
How to Measure Hubs & Rims for Bike Wheels! Spoke Length & ERD Explained
How-to guide for bicycle wheel building. Learn to measure hubs and rims, then use those values in a spoke calculation formula!
Even if you use online spoke calculators, it's helpful to understand the basics.
Also a tech explainer on ERD - Effective Rim Diameter.
00:00 How to Calculate Bike Spokes
00:19 How to Measure Hubs
00:34 How to Measure Flange Diameter
00:53 How to Measure Center-to-Flange
01:35 What is ERD ?? (effective rim diameter)
02:43 Spoke Length Formula
03:33 Relative Importance of Each Measurement
Even if you use online spoke calculators, it's helpful to understand the basics.
Also a tech explainer on ERD - Effective Rim Diameter.
00:00 How to Calculate Bike Spokes
00:19 How to Measure Hubs
00:34 How to Measure Flange Diameter
00:53 How to Measure Center-to-Flange
01:35 What is ERD ?? (effective rim diameter)
02:43 Spoke Length Formula
03:33 Relative Importance of Each Measurement
มุมมอง: 550
It'd be helpful to know how you got the value '22.5', which you take the cosine of, from the number of spokes in the wheel build. Thanks for a great explanation of a complicated topic.
Great point! Short answer: it's the angle at which a spoke leaves the hub. Long answer: We swept under the rug for simplicity here. What is called "X" in this video is known as θ (theta) ... a great resource to visualize this is Karl's www.kstoerz.com/freespoke/
@@monolithtool thanks!