Shimano 105 HB-R7070 front 12x100, Centrelock spoke length

J-bend, 32 hole. Flange diameter 44 mm left and 44 mm right, centre to flange 23.8 mm left and 35.8 mm right. Pick your rim in the calculator for your exact spoke lengths.

Rim

Choose the rim

ERD 591 mm, made in 24, 28 hole. Asymmetric: the spoke holes sit 3 mm off centre, allowed for in the lengths.

Washers under the nipples (optional), mm thick

Some alloy rims use them. Leave empty if you don't.

How to measure ERD yourself

Take two spokes of a known length and screw a nipple onto each until the thread end is flush with the top of the nipple. Drop them through opposite spoke holes so the nipples sit in the rim as they would in a built wheel. Pull them tight towards each other and measure the gap between the bent ends. ERD is the gap plus both spoke lengths.

Hub

Search hubs (optional)

Choose the hub (46 fit this rim)

J-bend. Flange diameter 58 / 52 mm, centre to flange 20 / 34 mm (left / right).

Hub not listed? Choose "Type in my hub", or tell me which one and I'll add it.

Lacing

Spoke holes

Crosses, left (disc side)

Crosses, right

I've started you on 3-cross for 28 hole, which suits most wheels. Radial is only for a side that doesn't brake or drive: a rim-brake front, or the non-drive side of a rim-brake rear.

SpokesSpoke type

Used for the stretch, the weight and the ping note.

Tension, tighter side, kgf

Most wheels 100 to 130. Check your rim's limit.

Spokes come in

Allow for spoke stretch (spokes stretch a little once they're tight, thin ones most)

Spoke lengths

Check your rim and hub against the maker's sizes before you order spokes.

Front wheel, 28 hole, J-bend spokes, 591 mm ERD.

Side	Spokes	Length
Left (disc side)3-cross	14	290 mm290.0 worked out
Right3-cross	14	291 mm291.2 worked out

Rounded to the nearest mm. Between two sizes, go for the shorter one.

Tension: the right spokes run at 74% of the left side's tension. Bracing angles 4.5° left, 6.1° right.

Weight: these spokes and alloy nipples come to about 182 g (about 200 g with brass nipples).

Have me build this wheel

Order these spokes from me

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Will my spokes fit?

Left (disc side): spokes I have, mm

Right: spokes I have, mm

Nipple length

Ping tuner: what each side should sound like

C#5, about 558 Hz at 110 kgf

A#4, about 466 Hz at 82 kgf

Pluck each spoke between the rim and where it last crosses another, and match the note. Every spoke on one side should sound the same. It's a guide to even tension by ear, not a tension meter.

Often needed with this wheel

Make it a dynamo front wheel
A SON hub built into the rim powers kLite lights and charges your phone. No batteries to think about on a long ride.
Nextie tubeless tape and valves
Ready for the tyre when the wheel is built.

These lengths come from the makers' published sizes and a standard sum. Rims and hubs vary from batch to batch, and sizes you put in yourself are only as good as your measuring. Travers Bikes takes no responsibility for spoke lengths worked out with this calculator, or for spokes, wheels or parts bought or built using them.

Shimano 105 HB-R7070 front 12x100, Centrelock with common rims

J-bend lengths include the bend. Rounded to the nearest mm.
	Holes	Left	Right	Lacing
Nextie Ripple 60GS 700c	32	252 mm	253 mm	3-cross
Nextie Ocean 45G 700c	32	267 mm	268 mm	3-cross
Nextie SGV 39 700c	32	273 mm	274 mm	3-cross
Nextie SGV 44 700c	32	268 mm	269 mm	3-cross
Nextie SGV 49 700c	32	263 mm	264 mm	3-cross
Nextie SGV 54 700c	32	258 mm	260 mm	3-cross
Nextie SGV 59 700c	32	253 mm	255 mm	3-cross
Nextie SGV 64 700c	32	248 mm	250 mm	3-cross
Nextie SGX 30 700c	32	282 mm	283 mm	3-cross
Nextie SGX 35 700c	32	277 mm	278 mm	3-cross
DT Swiss RR 421 700c	32	292 mm	294 mm	3-cross
DT Swiss G 540 700c	32	288 mm	289 mm	3-cross
Velocity Aileron 700c	32	284 mm	285 mm	3-cross

Back to the spoke length calculator for how it works and how to measure your own parts.

A pair of Nextie carbon wheels built at Travers Bikes

Want me to build it?

I hand-build wheels in Rochford with Nextie carbon rims and Hope, DT Swiss, Chris King, Shimano, Nextie and SON hubs. I work out the spokes and order them, so getting the length right is my job, not yours.

Price a wheel build