Road race
J.Laverack R J.ACK Disc (Race geometry)
2024 · 700c wheels · 8 sizes
Hand-made 3Al-2.5V titanium disc brake road frameset with 12 mm thru-axles, sold with the ÆRA Road Disc Race fork (43 mm rake, 368 mm axle to crown). These numbers are for the Race geometry option, which has clearance for tyres up to 28 mm; the Classic geometry is listed separately. J.Laverack publishes the same effective top tube (580.5 mm) for the 60 and 62 cm sizes; from the 62 cm stack, reach and seat angle it would work out at about 591 mm, so the 62 cm figure looks like a copying error.
Source: www.jlaverack.co.uk/r-jack-disc-titanium-frameset/
I ride:
Size run
Published geometry by size. How each size rides and fits for your rider profile loads with the page.
| Size | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 |
|---|---|---|---|---|---|---|---|---|
| Stack (mm) | 497 | 512 | 530 | 541 | 560 | 574 | 584 | 600 |
| Reach (mm) | 366 | 373 | 378 | 384 | 390 | 396 | 402 | 408 |
| Head angle (°) | 69.5 | 71.0 | 72.0 | 72.5 | 72.5 | 72.5 | 72.5 | 73.0 |
| Seat angle (°) | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 | 73.0 |