Dimensions
These are a collection of measurements on the 1978 Schwinn Superior 22“ frame. Most of these wore taken by hand using calipers or a tape measure. The frame angles were found online and have not been confirmed.
| Measurement | Dimension [mm] | Dimension [in] | Notes |
|---|---|---|---|
| Center BB-top of top tube | 540 | 21.260 | 22“ frame |
| Center seat tube-Center head tube | 570 | 22.441 | |
| Center BB-QR (Front) | 610 | 24.016 | |
| Center BB-QR rear axle | 440 | 17.323 | Varies depending on where wheel is mounted in dropouts |
| Wheelbase | 1045 | 41.142 | |
| Head tube angle | 72 [deg] | 0.000 | Found online, not measured |
| Seat tube angle | 73 [deg] | 0.000 | Found online, not measured |
| Hub height front | 353 | 13.898 | |
| BB height | 272 | 10.709 | |
| BB drop | 81 | 3.189 | hub height - BB height |
| Standover | 790 | 31.102 | |
| Seat Post | 26.8 | 1.055 | 26.4 originally installed |
| Seat tube outer diameter | 29.5 | 1.161 | |
| Down tube outer diameter | 28.7 | 1.130 | |
| Top tube outer diameter | 25.6 | 1.008 | |
| Head Tube outer diameter | 36.8 | 1.449 | |
| Head tube | 108 | 4.252 | Measured with fork removed, excluding cups |
| Axle-crown | 385 | 15.157 | measured with fork off bike |
| Steerer length | 145 | 5.709 | measured with fork off bike |
| Steerer threaded length | 24 | 0.945 | |
| Steerer beyond upper cup | 20 | 0.787 | |
| Cable hanger thickness | 3.15 | 0.124 | |
| Lock washer thickness | 1.85 | 0.073 | |
| Top adjustable cup height | 9.9 | 0.390 | Estimated from 0x4d.us/BUy |
| Estimated steerer extension beyond washer | 5.1 | 0.201 | beyond upper cup-hanger thickness-washer thicness-adj cup height |
| Front axle spacing | -13.7 | -0.539 | |
| Crown race seat | 26.4 | 1.039 | |
| Rear axle spacing | 125 | 4.921 | |
| Dropout to derailleur hanger | 29 | 1.142 | |
| Bottom bracket Shell | 68.0 | 2.677 | |
| Spindle length | 116.4 | 4.583 | |
| Drive side spindle | 34 | 1.339 | |
| Non-drive spindle | 36 | 1.417 | |
| Nervar outer bolt adjacent center to center | 75 | 2.953 | |
| Nervar inner bolt adjacent center to center | 29 | 1.142 | |
| Mounted tire width | 30.3 | 1.193 | Schwalbe Marathon |
| front cone nut height | 10.66 | 0.420 | |
| front cone nut flats | 12.43 | 0.489 | 13 nominal |
| front cone nut diameter | 15.65 | 0.616 | |
| front cone nut flanged portion | 5 | 0.197 | hard to measure |
| front cone nut unflanged portion | 5.87 | 0.231 | easier to measure |
| front cone nut narrow to worn track | 2.17 | 0.085 | hard to measure |
| stem quill overall | 145 | 5.709 | |
| stem quill bottom to center of top | 137 | 5.394 | |
| stem insertion depth | 60 | 2.362 | |
| Stem min insertion-intersection | 72 | 2.835 | Center of intersection, not top |
| Stem reach | 95 | 3.740 | |
| Effective rise | 70 | 2.756 | Accounting for head tube and stem angles |
| Effective reach | 72 | 2.835 | Accounting for head tube and stem angles |
| Brake reach to 27“ front | 68 | 2.677 | Mounting bolt to pad bolt. |
| Brake reach to 27“ rear | 68 | 2.677 | Estimate |
| Theoretical max 700C tire width | 42 | 1.654 | Zero clearance |