Arrow setup analysis for a 24-inch arrow at 240 fps. Default specs: 347 gr arrow, 8.4 mm shaft diameter.
Total arrow mass for a 24" build: 347 gr = 204 gr shaft (8.5 GPI × 24") + 143 gr components (point + insert + nock + fletching).
KE: 44.4 ft·lbf — Momentum: 0.370 slug·ft/s
| Distance | Velocity | KE (ft·lbf) | Momentum (slug) |
|---|---|---|---|
| 0 yd | 240.0 fps | 44.4 ft·lbf | 0.370 |
| 10 yd | 235.1 fps | 42.6 ft·lbf | 0.362 |
| 20 yd | 230.3 fps | 40.9 ft·lbf | 0.355 |
| 30 yd | 225.5 fps | 39.2 ft·lbf | 0.348 |
| 40 yd | 220.9 fps | 37.6 ft·lbf | 0.340 |
| 50 yd | 216.4 fps | 36.1 ft·lbf | 0.333 |
This build pairs an ultra-short cut with a traditional, recurve-paced launch. At 24 inches the shaft is unusually stiff and light for its diameter, often paired with very short draw lengths or youth and crossbow-style setups, and 240 fps is the kind of speed produced by longbows, recurves, and lower-poundage or longer-brace compounds. Together they finish at about 347 grains, which is what drives the kinetic energy and momentum figures in the table above.
Because this is an ultra-short cut, a short shaft loses very little energy to its own flex, so the dynamic spine runs stiff. The launch matters too: with a traditional, recurve-paced launch, the dynamic-spine reaction is dominated by a forgiving, quiet shot where heavier arrows and clean form matter more than raw speed. Pick a static spine that lands stiff once this 24" shaft and your point weight are factored in, then confirm it with bare-shaft or paper tuning.
At roughly 44.4 ft·lbf this is small-game and target kinetic energy — this energy level suits target practice, 3D courses, and small game; experienced archers also take whitetail at close range, but most guides treat it as the floor for deer-sized animals. Keep in mind that an ultra-short cut at 240 fps is only the starting point; broadhead choice and shot placement still decide the outcome more than the headline energy number.
A traditional, recurve-paced launch pushing roughly 347 grains yields about 0.370 slug·ft/s of momentum. That is light penetration potential: momentum here is on the light side, so penetration depends heavily on a sharp broadhead and a clean, square hit. Momentum, more than raw kinetic energy, predicts how a 24" arrow holds up against bone and angled entry.
For an ultra-short cut launched at 240 fps, dial in rest centre-shot and timing first, then verify broadhead flight against field points at distance. A forgiving, quiet shot where heavier arrows and clean form matter more than raw speed — so re-check the tear any time you change point weight, since that shifts the dynamic spine on a 24" shaft more than most archers expect.