Pretty interesting stuff,
I haven't really thought about all of the factors that would effect things. Different diameter shafts would add to the difficulty of comparison. I know in archery, using hollow aluminum or carbon shafts, the diameter and length correlate to determine the "spine" of the arrow. I'm guessing that shooting a heavier solid shaft through water makes this less of a factor.
Does anyone have any "seat of the pants" opinions. I'm guessing that some spearos that own or have shot multiple guns and configurations may have notices some overlap in performance.
The chart I got from Mr. Daryl Wong is:
90 cm = 42in hybrid
105cm = 50 in hybrid
115cm=53in
120cm = 55
130cm = 60in hybrid
I don't know if this list is the result of actual testing or if it's a rough guide based on experience. Due to all of the possible variables, a list based on the opinions of experienced spear hunters might be the most realistic and accurate way of having a comparison. I believe that the above list assumes the Euro guns listed on the left are setup with double 16mm bands and given an equivalent Wong Hybrid size.
I also saw some pictures of the Hybrid with carbon barrel in blue and green camo
In regards to my Rob Allen Caranx1300, as it's all I have to compare to. I noticed that all of the double band Tuna models are configured with a 7.5mm shaft and double 16mm bands.......the Caranx models are setup with a 7mm shaft and a single 20mm band.
Would this be because the 7mm shaft is too thin for a double band setup? so they use a 7.5mm shaft instead?
here's another thought that makes me wonder.....If placing a shorter set of bands on a gun makes it a little stronger, and each size of gun has a slightly longer set of bands and a slightly longer shaft. Then wouldn't the shorter gun actually be more powerful?
a 900 would be stronger than a 1200 for example. Is my thinking on the right track? within a range of guns, which one would be right on the "sweet spot" of performance.
For example of all of the different length Rob Allen Tuna models (7.5mm with double 16mm bands) which length would actually be the best performing? would the "spine" of the shaft start to become a factor?
And there is the original comparison, what would be most like my 1300 caranx. If I wanted to cut down a caranx and make it a shorter, double 16mm setup...at what point would I end up with the same performance, if I did this. just for discussion sake.
Sorry about all of the rambling, I'm a nerd. I'm a machinist so I'm always thinking about what makes things tick.
Take care,
Mitch
