540-Virginian
WKR
Ive posted before - nock on podcast episode 232 on arrow priorities is a must listen for arrow building realities
Leukotape.Overcoming friction is an issue.
I wonder which manufacture will list this first....Watch out FOC, the coefficient of friction is about to take over...
Your test methodology seems pretty sound. The question remains does penetration of field points into foam have any meaningful correlation to penetration of broadheads into animals? My guess is probably not.Sample size, roughly 30 shots or so a week with this group over two months.
Friction difference, aluminum vs weaved bare carbon. You can feel the difference both on pulling and by running them through a gripped hand. Its significant enough a scale would read it.
Static spine, they are the same spine from the factory. I shoot through paper at about 8 feet, 12 yards or so. In flight its 125 vs 175 (as well as a third group with 150 up front. for these tests) So in flight is "Paper good"
Penn numbers. I never even bothered to put a ruler on it. It was so consistent there was no need. Outside an arrow hitting the odd soft spot the results were the same every time. FMJ 125, Axis with 175 up front. Axis with 150s and lock washer up front.
Points. In the picture the fmj has a huge 125 kudu field point that stops pen in foam. The axis has a 100g. I also used bullet points.
I actually posted this test elsewhere in greater depth. The results are repeatable to a fault. I got called out on the fmj being a 3 fletch (done to keep the weight even) and built a 4 fletch to repeat the test in case it was an issue with friction in flight or spinning. Made zero difference.
Short version i built three sets of arrows to be the same weight with three different broadheads (Turkey, deer, moose) And did this test while shooting them over a couple months. Then i chewed up one foam target doing broadhead tests for poi.
(pic arrow is a little crusty it was thrown together only for the test)
Again they do not act the same pushing weight in a canvas field bag. It is near impossible to get a fair comparison but pushing folded cloth the 150s seem to have the edge. But again, thats near impossible to say 100% and is prob close to the odds of a coin flip.
When the Trophy Ridge Arrows came out about 14 years ago, one of their "marketing points" was a "new slick coating".......whoopty do. Well, that new slick coating had a mirror shine to it that reflected light just like a mirror as well. The first thing I did to the arrow shafts was put them in my drill chuck, and then sand that sheen off with 600 grit silicone carbide paper. Worked like a champ. Even though they discontinued them, those TR Crush arrows are still my favorite over everything else I've shot over the years......but without that slick coating. Just a lot of work to get them to where I want them.I wonder which manufacture will list this first....
Yea, no way foam is a good indicator, the foam has a melting point. A light fast arrow may reach that point, causing more friction. Then a heavier slower arrow of the same shaft dia. Once the broad head cuts the path in the hide, friction ( if the animal does not move, which most do) will be lessened by the moisture ( blood and body fluids) even to the extent of it becoming lubrication, decreasing the resistance of the shaft following the head through. A broad head opens a much bigger path then a field tip also, decreasing the shaft drag even more so.Friction from both shaft material and diameter following a broadhead though an animal? You really feel like you can quantify that in a foam block? Sorry buddy, appreciate the effort but the test is way off base. You have so many variables and possible outliers that quite frankly it’s silly to even hint at any type of conclusive results.