Firenock PAPS is proudly designed in Illinois (US Patent# 9046452). A unique take on the ordinary arrow preparation tool, the PAPS acts as both your arrow’s spine index locator as well as your arrow deflection value tool. With PAPS (and some practice), you can easily do all complicated, but important arrow preparation procedures within seconds.
After locating the spine index or what we call the first dynamic bend of your arrow, you can use it as a reference point for your cock feather. By doing so, you can then predict how every one of your arrows will flex during launch because they will all flex in the same direction. With this new knowledge, your shooting accuracy will be enhanced.
After the release of our ultra high performance arrow series AeroBolt, we at Firenock noticed a need for a unique, quality tool for arrow preparation. This prompted the creation of the APS. While an excellent tool, we found that there was still a need for an even better tool. Specifically, a tool to simplify the tedious tasks of spine indexing, spine measuring, spine matching, etc. For without these arrow preparation procedures, shafts are not reliable foundations to install inserts, nocks, or vanes onto. Nor are they dependable enough to build high precision, high performance arrows from. Via the PAPS however, those essential steps can become effortless and straightforward. It is our belief that using the PAPS will become a significant part of your arrow preparation routine.
Proudly US made, the PAPS track is a 36 inch long double track system machined in a tripe box system. Made of 7000 series aluminum and finished with type two level three hard-anodizing, it’s safe to say that it is extremely durable. To even further ensure its durability and stability, especially at its long length, the bottom of the track has six 3M stoppers installed. Along both sides there are easy-to-read measuring tapes in both inches and centimeters. Specifically, on one side of the track, full length measurement (0-36” / 0-914mm) is provided while on the other side, it is center to each end measurements (18”-0-18” / 457mm-0-457mm). These two different measuring tapes are purposefully designed to simplify the process of measuring shaft length as well as of locating the middle point of the shaft. To doubly ensure your PAPS and bench is indeed level, at least one 7mm cylinder water level can be installed along the middle of the track.
The PAPS tower the core of the dynamic first bend locator. To provide the perfect perpendicular contact points between this tower and your shaft, there are two custom crowned ball bearings at the base of the tower. Three linear ball bearings make up the top portion. With these bearing, PAPS can apply perfectly vertical pressure to the exact center of the shaft during testing while still minimizing the horizontal pressure that may form during spine readings.
In the present market, most spine locater tools use off-the-shelf ball bearings to support and to rotate the shaft. However, there are two fundamental problems with their design.
Due to above problems, Firenock has custom-made new ball bearings.
To solve the uneven pressure problem, our new ball bearings have a unique angle variable crown outer edge. This also decreases overall pinch pressure on the shaft, or, in other words, the shaft can ride smoothly and freely all of the time. Further, this forces the shaft to stay perpendicular to the center of the custom ball bearings. To solve the second problem, the one about lack of screw tolerance, our bearings have a pre-built, ready to mount stud center.
All in all, PAPS comes with two supports which each have two of those custom crowned ball bearings installed. Additionally, there is a machined index line on both sides of our supports to ensure the correct position via the measuring tape.