...
Would double 16mm bands be easier to pull back than a 20mm band?
I saw they mako speargun they look awesome and so cheap but they don't ship to my country.
Thanks
Yes and a
single 16mm would be simpler to deal with, especially when just starting out. Folk usually over-estimate the importance of power and under-estimate most other factors.
You mention being 165cm, which is about 5' 5" - probably normal size for your age rather than unusually large. I think a big, long, heavy railgun might be a bit much for you - my son is 16 probably about your size, slender but strong and I wouldn't dream of giving him my old RA90 to use (with single 16mm or 20mm rubber), too big/bulky/heavy/powerful/hard to load - it might put him off unnecessarily. On the other hand, I expect it can be done, small adults (male & female) are somehow able to load even the longest railguns (140cm-160cm, gulp). And you'll be able to "grow into it". Ironically, like axes, it is generally held that longer models are safer to use (I guess it would be hard to shoot yourself with 160cm railgun).
Unlike you, I spear murky, low-viz UK seas. I started off with a 90cm railgun but have since down-sized to a much smaller, lighter 75cm gun and much prefer it, for almost all condition (never expected that). It makes walk-ins easier and more discreet, it is easier to handle in the water especially in strong currents. The big railgun dominated everything but I hardly notice the slender Omer XXV, it's more like an extension of me or just another piece of the system.
The main thing is to match the barrel/spear length to the visibility. Sumora offer a chart which seems a reasonable guide to me:
sumora, official distributors of Rabitech and Rob Allen. I would "guesstimate" 110-120cm for New South Wales reefs, which I assume has beautiful gin clear waters.
Also, remember that you can always sell a decent speargun if you find you'd prefer something different later. Also, if you start with a shorter speargun and find you prefer something longer later - you might well decide to keep the smaller gun for: poor viz conditions, reefs/wrecks, guests, spares/back-up...or kill shots for those really big fish
.
Hey...
[ame=http://www.youtube.com/watch?v=Jmg86CRBBtw]Hill Street Blues - 'Let's be careful out there' - YouTube[/ame]