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Thread: Anybody with experience of changing from Hex 6.6 to CVX / Hex 7.2 / Hex 7.5 ?

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    Anybody with experience of changing from Hex 6.6 to CVX / Hex 7.2 / Hex 7.5 ?

    Bad News - my Hex 6.6s along with the rest of the bow they were attached to was nicked from our field on Monday night whilst I was collecting / plotting an end
    Good News - it looks like a "personal belongings" part of our contents insurance should cover it, so I should be able to afford to replace the Borders

    But... the Hex 6.6s are no longer available and the Hex 8s are out of budget, so I'm left with either the Hex 7.2 which I understand is a slightly detuned 7.5? or the CVX.
    I'd also bought another dozen 540 ACGs a few months ago which were working nicely, and these weren't nicked because they were in the target at the time! Having just bought some, I'd like to avoid having to replace arrows as well if I can avoid it, which, from what I've found out so far I think I might get away with if I go CVX , but I doubt I would with the 7.2s, but I guess that would still be much cheaper than if the insurance didn't cover it!

    I'm going to try and talk to Sid soon, but I'm also interested in people's thoughts who have made a similar upgrade from the 6.6s.

    Did you stay with the same OTF or drop poundage a little given the extra pre-loading (7.2/7.5)?
    Did you need to change spine, and how much of a change was needed?
    Is a longer string needed for the bigger hooks on the 7 series?
    What is better after the upgrade, and were there any negatives?

    And anything else that you think might help me decide which way to jump (assuming that I get confirmation that the insurance will cover the theft).

    Thanks in advance!

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  3. #2
    It's an X I've taken part in an AIUK Ironman Shoot.The Fonz Award.AIUK subscriber. Timid Toad's Avatar
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    Yes, I've gone Hex6 BB2 (became the 6.5) Hex 7 then 7.5.
    I've always kept the same weight on the fingers. Spine change was minimal - I've been shooting 500 spines with more or less point weight and more or less the same length with 42-43lbs otf for 10 years. *But* I would try the ACGs and be prepared to treat your shiny new bow to a new set if necessary.
    Yes you'll need a new string either way.
    For me it's always been the technical side and wanting to be at the cutting edge. I shoot Olympic recurve so I know with my 7.5s it doesn't matter what on earth the weather is doing I'll have to move my sight just a wee bit and I shoot the heaviest arrows I can for accuracy at distance. My 6BB2s were the quietest I've had and liked the lowest bh, slight more for the 7s and 7.5s.
    And my Hex8s are on order!
    "Time is an illusion. Lunchtime doubly so." Douglas Adams

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    AndyS (16-08-18)

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    Thanks TT, I'd been assuming that there was no chance the ACGs would work with 7.2s (assuming they are basically a 7.5) so that's good news that there might be a chance. Whatever I end up with, I will replace the arrows if necessary - I don't think there's much of point in getting kit of this quality and then not matching the arrows properly!

    Even if the string was exactly the same length, I'd still need to make a new one - the other's gone! Any idea how much longer / shorter the 7.5 needed?, Extra serving length for bigger hooks? it might give me a starting point.

    Enjoy your Hex8s!

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    It's an X I've taken part in an AIUK Ironman Shoot.The Fonz Award.AIUK subscriber. Timid Toad's Avatar
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    I have mediums Hex7s on a 25" Tempest, which is a little bit bigger than some 25" risers, and I use a 67.5" ish string for a 68" bow. I like to have at least 1 twist per inch, and never ever use strings with an X in the title. These are Vectran and can damage recurve limbs - it's great on short fat and thick compound limbs. I always use Dyneema, and currently am using Angel.

    If your arrows are a touch long it might be worth chopping 1/2" off if they seem a bit weak, but basically through button fiddling, over centre positioning etc I've made the same shafts behave.
    "Time is an illusion. Lunchtime doubly so." Douglas Adams

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    No worries on strings with Vectran, I went to FF+ at Borders recommendation when I got the Hex6.6s.

    I had a good chat with Sid earlier and he thinks that I'd probably need to go stiffer for the 7.2s - I guess there's only one way to find out!
    At the moment I'm inclined towards the Hex7.2s even if I do end up needing new arrows - I just need to hear from the insurers first.

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    Hello Andy,

    I'm shooting Hex 6.6's, and got a set of Hex 7.2's a couple of months ago, both on Tempest risers to make a 68" bow in both cases.
    I have the 6.6's at 40lb, and the 7.2's at 38lb, and I'm shooting Easton FMJ Match 530's out of both (same arrows).
    Work well for me in both cases, and tune well.
    The only thing that made a difference to the sight marks was when I changed out the piles and fletchings on the FMJ Match's from Bohning Air's and 100 grain piles to Bohning X Vanes and 110 grain piles.
    Dropped about 2 micro divisions on a shibuya sight at full extension, but worth it with the FMJ's for quicker stability.

    I also have the ACG's in 540, and, again, they work well with both set up's, just slightly higher sight marks with the ACG's.

    The string length does differ between the 6.6 and the 7.2's, but not by much.
    I've got lengths of 66.5" on the 6.6's, and 67" on the 7.2's.

    Win/Win all ways round, the extra speed of the 7.2's let me drop a couple of pounds, and use the same arrows, sight marks are nigh on identical betwen both set up's.
    Both sets of limbs are the "H" core by the way.

    Hope this helps,

    Andy R

    I also have a set of CVH "H" cores as well, but that's a different story (still good though)

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