Roly Poly No. 4

Arvo

No. 4 · Stepped V

A full-size V-shape: 56.6 mm across, 44.4 wide and 66 grams. A little ledge runs round where the catch zone meets the rim, and the cup steps down three times to a domed nub.

A$129
Coming soon ⌀ 56.6 · 44.4 · 66.0 g

3 colourways, 3 places

  • Black StumpCoolah, NSW31.83° S · 149.72° Eblack · blasted
  • BluestoneMelbourne, Vic37.81° S · 144.96° Edark grey · blasted
  • WollemiWollemi National Park, NSW32.98° S · 150.56° Edark green · blasted

The Arvo, in section

44.4⌀ 56.6gap 4.30
Diameter
56.6 mm
Width
44.4 mm
Gap
4.3 mm at the pads
Weight
66.0 g built, with bearing and axle
Spin inertia
305 g·cm² 89% of it in the outer 30% of the radius
Material
7075-T6 bead-blasted, anodised
Bearing
Size C (R188) 6.35 × 12.7 × 4.76 mm
Response
19 mm slim pads sit 0.05 mm under the wall
Axle
M4 × 10 set screw

An arvo is the afternoon, when the work's done and there's still light to throw in. The wide V catches the string wherever it lands, and the steps in the cup take metal out of the middle so it can go to the rims.