Wheelbuilding: Strummer HR-10 Ratchet with Falcon30 TRS 700c (20/24H)

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Below are the spoke sizes for the hub and rim combinations below:

Hub(s) Type: Strummer HR-10 Ratchet (9x100/10x130, 20/24H)

Rim(s) Type: Strummer Falcon30 Rim Brake CNC  (20/24H)

Front Hub Left Spoke Right Spoke L/R Tension
Radial (Recommended) 274mm 274mm 100%
1 Cross (Recommended) 278mm 278mm
100%
2 Cross 286mm 286mm
100%
3 Cross 296mm 296mm
100%
Rear Hub Left Spoke Right Spoke R/L Tension
Radial 272mm 264 mm 44%
1 Cross 274mm 268mm
44%
2 Cross (Recommended) 282  mm 277 mm
43%
3 Cross 291mm 290mm
43%

Warning: This guide is created  to help determine the correct spoke size when assembling a Strummer wheelset. This guide can be used as a reference, but it is important to remember that there is a possibility of inaccurate information due to changes in product sizes/specifications, or user error when inputting data.

Caution: This guide is intended to provide general information and should not be used as the sole reference for determining spoke sizes. There may be a reasonable difference/tolerance in spoke sizes of +/- 1 mm depending on the brand and type of nipple used during ERD measurements or wheelset assembly. Differences may also arise from the rounding process of the numbers that appear during calculations. It is recommended to re-measure and re-calculate before assembly (using the brand and type of spokes & nipples that will be used in the wheelset assembly process). It is recommended to consult a professional bicycle mechanic or manufacturer's specifications before assembling a wheelset. Using the wrong spoke size can be dangerous  safety and wheel structure failure. Always take proper precautions and follow the manufacturer's guidelines to ensure the safety of yourself and others when working on  your bike.