Chill-X 75% RockMods – Review

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This topic contains 7 replies, has 5 contributors, and was last updated by bow-drawn Bow Drawn 1 month, 4 weeks ago.

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  • August 24, 2014 at 11:09 am #639989 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
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    Earlier, I did a review of the Chill-X with 85% Rock Mods, comparing to my original Monster (M6). IBO rating was about 324 fps by my calculations.

    Yesterday, I demo’d the Chill-X with 75% Rock Mods. It was set at 70#/28.5″ (F Mods). There was just a D-Loop and a WB rest on the bow.

    I loved {#emotions_dlg.mathews_love} the Draw Cycle. After reading some posts about the 75% RM being so much stiffer than the 85% RM, I had my reservations about even trying to draw the bow because of old biceptal tears in my right shoulder. I found the draw was very shoulder friendly. There was no real strain in the first few inches, with just a moderate effort to get the cams rolling over. Once the cams started rolling over, the draw became very smooth and easy. At the end of the draw cycle there was no ‘bump’ or sudden drop into the valley, like on the M6. The draw came smooothly into the wall, which was solid. At 70# the Chill-X with 75% RM involved less strain than the drawing the M6 at 63#, 80% M6 mods.

    The valley is shorter and the holding weight more than the 85% RM, but not so short as to be a creep problem with the correct DL. It is nothing like the Monster AVS that will rip the bow from your hand at the slightest amount of creep. The short valley really is important only if the DL is incorrect … too short and you aren’t relaxed into a bone-on-bone position, so any muscle fatigue/creep is going to allow the bow to come out of the valley, too long and any relaxation of the over extension is going to allow the bow to come out of the valley.

    I normally shoot a 28.25″ True DL. I started off with the 28″ 75% G Rock Mods and found it a bit short, had a tendency to come out of the valley if I didn’t pull hard into the wall. I changed over to the F mods and at the 28.5″ DL the bow settled in the valley with only moderate back tension to hold…perfect!

    The Chill-X with 75% RM held very steady, no wander or herky-jerky motion, no side to side wobble in the hand, even when I intentionally put a little too much hand into the grip, intentionally torquing the bow a bit … something you can’t do with the M6. The improvement of hold and steadiness is due to the difference in bow geometry, and not so much in the difference of brace height (see overlay comparison pic below).
    [A little comment on those having trouble holding a bow steady or not being able to hold on the aim point ... view George Ryals' IV (GRIV's) TAW youtube series, they explain among other form issues what happens when you don't have a proper grip or when you draw the bow incorrectly. The lower holding weight of the 85% RM really only avoids having to pull into the wall (back tension), avoiding pulling the sight pin off the target, but then makes string contact (torque) with the face an even bigger issue.]
    https://www.youtube.com/watch?v=gexDLptcios
    https://www.youtube.com/watch?v=miNue_WmJ50

    M6

    The last demo I did was to check the speed rating. With the Chill-X at 70#/28.5″ using a 488-gr arrow (Victory VAP 300, 20% FOC, FlexFletch FFP360 vanes L Helical) speed was 271, 272, 272, 271, 271 = 271.4 fps Avg. This confirms the IBO rating of the 75% RM as the advertised 336 fps. Note: 63#/28.5 Monster speed was 276 fps with same arrow, peep and D-loop.
    IBO rating 336 fps
    Subtract 15 fps for 28.5″ DL = 321 fps
    Subtract 46 fps for arrow wt > 350 grains (488-350 = 138/3= 46) = 275 fps
    Subtract 3 fps for WB rest and D-Loop = 272 fps [Note: subtract additional 2 fps if 6~7 grain peep is used]

    … hope this helps. {#emotions_dlg.mathews_peace}

    Now my problem is I have no archery tags this year, and no archery hunts scheduled, plus the Monster and Prestige are shooting 5-spots with broadheads at 40 yds, so I’ll likely wait until November, 68 days and counting … {#emotions_dlg.mathews_praying}

    August 24, 2014 at 3:50 pm #640008 Back to Top REPORT
    ohio-timberghost
    Ohio Timberghost

    Age: 42
    Joined: 1/30/2008
    Location: Ohio
    Do you prefer the 75% or 85% rock mods ?
    CHILL 28/70 "BLACKOUT", QAD HDX, Ktech5 twin, HHA XL5519, T3 quiver, Goldtip XT 75/95's, Rage 2 blade Chisel's Drenalin 28/70 WB, B Stinger,HHA DSXL5519,GoldTip 75/95's, Rage 2 blade Chisel's
    August 24, 2014 at 4:10 pm #640010 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
    View My Bows
    I’ve always shot back tension method using 65% letoff, so I prefer the heavier holding weight of the 75% RM, which in my opinion makes for a crisper, cleaner release. I’m hoping that a 65% Rock Mod might be in the works.

    I’m not one who draws early on game,then waits for the shot opportunity.  I grew up on recurves.{#emotions_dlg.mathews_wink}
    The longer I hold, the more likely I’ll shift my anchor point or bow hand pressure, lean the head into the shot, etc., and flub it up. I’ve always waited for the right moment then draw, anchor, aim, execute, shoot … so high letoff has never seemed like an advantage for me.

    While the 85% RM could be shot in the same way, with the lower holding weight two things happen:
    – How much one pulls/climbs into the back wall determines how much the riser is torqued. With less holding weight, there is less torque resistance, and more left-right shot spread with inconsistent pull into the wall. For a RH archer, pulling harder into the back wall usually results in an arrow flying left … and its amazing how hard one can pull with the adrenaline running full bore, eh?
    – With less holding weight, it is easier to torque the string, either with face pressure or release pressure, resulting in arrows flying left for a RH shooter.

    JMHO{#emotions_dlg.mathews_peace}

    August 24, 2014 at 9:23 pm #640090 Back to Top REPORT

    deltahunter

    Joined: 12/8/2006
    As always, awesome review!
    August 25, 2014 at 9:30 am #640121 Back to Top REPORT
    lawrence-j-wyatt
    MT_Wyatt

    Joined: 3/27/2012
    View My Bows
    Thanks for taking the time to put your review together, I appreciate the info
    August 25, 2014 at 3:58 pm #640361 Back to Top REPORT
    bow-drawn
    Bow Drawn

    Age: 63
    Joined: 11/14/2007
    Location: Ohio
    View My Bows
    The one thing I have to say is thanks for doing all this work and sharing it with us. Thanks.

    I have shot the 75% rock mods and the 85% rock mods on the Chill X. I would prefer the 85% rock mods for my style of shooting. Some one said to me the 85% rock mods seem to be step backwards with loosing the speed of the shot. I have to agree. The industry seems to be speeding up. This is a digression backwards on the speed but I feel a step forward with this bow on how well it holds with the 85% Rock mods.

    August 25, 2014 at 8:02 pm #640379 Back to Top REPORT
    ohio-timberghost
    Ohio Timberghost

    Age: 42
    Joined: 1/30/2008
    Location: Ohio
    My 85% Rock Mods are in for my Chill…..Going tomorrow to pick them up. He said I can try out the 75%  and the 85% mods both and see which one I prefer….I might be there for a bit…..I might be going with the 27.5″ instead of the 28″ too….not sure on that either….{#emotions_dlg.eusa_think}
    CHILL 28/70 "BLACKOUT", QAD HDX, Ktech5 twin, HHA XL5519, T3 quiver, Goldtip XT 75/95's, Rage 2 blade Chisel's Drenalin 28/70 WB, B Stinger,HHA DSXL5519,GoldTip 75/95's, Rage 2 blade Chisel's
    August 26, 2014 at 8:34 am #640410 Back to Top REPORT
    bow-drawn
    Bow Drawn

    Age: 63
    Joined: 11/14/2007
    Location: Ohio
    View My Bows

    My 85% Rock Mods are in for my Chill…..Going tomorrow to pick them up. He said I can try out the 75% and the 85% mods both and see which one I prefer….I might be there for a bit…..I might be going with the 27.5″ instead of the 28″ too….not sure on that either….{#emotions_dlg.eusa_think}

    It was my experience of going from 28″ to 28.5″ DL using the rock mods. The rock mods are very close to true length so if you were shooting a 28″ before you can probably move into the 28.5″.  I’ve talked to several guys now that have moved into the next longer DL because the usual Draw Length was too short now.

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