Challenge presses were built in Grand Haven, MI, between 1935 and 1973. C, E, G, and K series presses have reciprocating beds. M series presses have rigid beds and strongly resemble SP series Vandercooks.
Challenge Census
Challenge Press Manuals
| Model | Paper | Form | Bed Size | Fl. Space | Lbs. |
|---|---|---|---|---|---|
| 15 GP1 | 15 × 24" | 14½ × 23½" | 15¼ × 26" | 31 × 86" | 1160 |
| 1528 K2, KA3, KP4 | 15 × 28" | 14½ × 23½" | 15¼ × 26" | 33 × 86" | 625 , 750, 765 |
| 2028 K2, KA3, KP4 | 20 × 28" | 19½ × 23½" | 20¼ × 26" | 38 × 86" | 750, 875, 900 |
| 15 KA3, KP4 | 15 × 24" | 14½ × 23½" | 15¼ × 26" | 31 × 86" | 1040, 1060 |
| 20 KA3, KP4 | 20 × 24" | 19½ × 23½" | 20¼ × 26" | 36 × 86" | 1215, 1235 |
| 15 MA3, MP4, MPC5 | 14¾ × 20" | 14 × 18" | 15 × 25¼" | 2'9" × 5'7" | 620, 685, 785 |
| 21 MA3, MP4, MPC5 | 203_4 × 26¼" | 20 × 24" | 21 × 31½" | 3'3" × 7'1" | 975, 1050, 1150 |
| 1418-C, CG6 | 14 × 18" | 13½ × 17½" | 14¼ × 19¾" | 22½ × 28½" | 180 |
| 1425-C, CG6 | 14 × 25" | 13½ × 24" | 14¼ × 19¾" | 22½ × 28½" | 180 |
| 2025-C, CG6 | 20 × 25" | ||||
| 1418-E, EE7 | 14 × 18" | 13½ × 17½" | 14¼ × 19¾" | 22½ × 28½" | 180 |
| 1425-E, EE7 | 14 × 25" | 13½ × 23½" | 14¼ × 25¾" | 22½ × 35½" | 250 |
| 2025-E, EE7 | 20 × 25" |
Notes
1. Power & manual grippers
2. No inking assembly
3. Handwheel ink distribution
4. Power ink distribution
5. Power ink & power carriage
6. with gripper & side guide
7. with power ink distributor unit
Source:
Catalogs and operator manuals for the specific presses listed.