[Figure: ResultsTldr]

## Overview

Bows naturally rotate an arrow one direction or the other as the arrow
leaves the bow. There is a long-running debate about whether your vane
helical or offset should match that natural clocking direction.

The argument is intuitive: if the bow wants to start the arrow spinning
left, maybe a left helical gets the arrow stabilized sooner. If the
fletching is trying to spin the arrow the other way, maybe the arrow wastes
time fighting itself.

For this test, the bow naturally clocked left. We tested one vane in both
directions: AAE Max Stealth, 3-fletch, 2° helical right vs. the same
build with 2° helical left. The left-helical build is the matched-clock
build.

We also captured slow-motion video. The right-helical arrow initially
followed the bow's left rotation, paused, then transitioned into the
vane-driven rotation. You can see the competing effects, at least visually.

The question is whether that showed up in the target and measurement data.

## Test Methods

For full details on the test methods, group capture, and analysis
processes, check out the
[Methods](/research/arrow-study-2026/methods/) page.

## Quick Tips

Hover over the dots in any plot to see the build configuration and results
details.

The broadhead drift plot is the main restorative-lift comparison. Lower
drift means the vane kept the Iron Will Wide fixed-blade broadhead closer
to the field-point baseline under induced lateral torque.

Group size is shown before mean radius because it is easier to picture, but
mean radius is the more statistically honest metric. Click the group dots to
open the annotated group photos.

## Broadhead Drift

The matched-clock left helical did not improve restorative lift in this
test. It actually drifted a little more: about 7.49in vs. 6.73in for the
right-helical build.

That difference is small relative to the confidence intervals, and it is
not the direction you would expect if matching clock direction were a major
performance lever.

[Figure: PlotSections]

## Fixed-Blade Groups

The fixed-blade grouping metrics leaned slightly the other direction. The
left-helical build had a smaller group size (about 4.69in vs. 5.11in) and a
slightly smaller mean radius (about 1.51in vs. 1.57in).

That is a tiny difference. Read this as the two builds are basically in the
same performance neighborhood.

[Figure: PlotSections]

## Takeaway

We did not see a meaningful performance benefit from matching helical
direction to the bow's natural clocking direction.

The matched-clock left helical was not clearly better. It was a little
worse on broadhead drift, a little better on fixed-blade group size and
mean radius.

One practical note: if your arrow is spinning left in flight, that rotation
can have a tendency to loosen a standard-thread broadhead.

A few caveats:

- This is n=1. We only tested AAE Max Stealth in one left-vs-right helical
  comparison.
- This bow naturally clocked left. A different bow, string, or nock, could
  clock differently.
- We tested helical direction, not every possible offset angle, fletching
  jig, vane profile, or clocking variation.