Chrono on my Chill R today

Home Forums General Archery Discussion Chrono on my Chill R today

This topic contains 10 replies, has 7 contributors, and was last updated by  wvbowhunter98 7 months, 2 weeks ago.

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  • March 10, 2014 at 4:42 pm #622367 Back to Top REPORT
    priz
    Priz

    Joined: 8/22/2008
    I put my new bow on the Chrono today.  Any input would be appreciated.

    Chill R  60 lb and 27.5 inch Draw length.
    My draw scale says its pulling 67 lbs peek draw weight with 16.5 let off ( not sure why so high)  Fresh new bow out of the box.
    Arrows are Axis FMJ 400  weighted of 420 gm’s
    chrono speeds were consistent at 279 and 280 fps

    I want to change the setup down to 60 lb draw weight were I am comfortable.  Just wanted to see what it did before I changed it.
    Should I stay with what I have arrow wise or is there better for my setup???  I have only ever shot the Axis FMJ’s and I like them just fine.  Probably my main question is my arrow weight I guess.  Sorry I don’t have the chrono speed for 60 lbs yet
    Any advice would be great

    Richard

    March 10, 2014 at 5:10 pm #622370 Back to Top REPORT
    hotshot
    Hotshot

    Age: 54
    Joined: 11/1/2008
    Location: Oregon
    Hey Priz…

    Firstly, Congrats on your Chill R….{#emotions_dlg.mathews_applause}

    The arrow your using is a great arrow……At 60lbs you should get 272 FPS at 70lbs kinetic energy…

    Although you could go to a 500 if you want. Making your arrow around 392 grains?? Getting some speed back when you lower the weight to 60lbs.
    Get you around 280 FPS with about 69 lbs of kinetic energy…..Using FMJ 500’s at 60lbs on your bow. This is certainly a way to go. You would effectively be shooting at or better than you can at peak weight with a heavier arrow…using less draw poundage…nice. {#emotions_dlg.mathews_thumbs_up}

    Good luck…let us know how things go….

    {#emotions_dlg.mathews_monster_blue}

    >>>>--Shoot Straight-->
    March 10, 2014 at 9:52 pm #622393 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
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    At 60#/27.5″ you’d be shooting a 420 gr arrow at about 265 fps.

    The problem is if you ordered a 60# ChillR, it shouldn’t be drawing 67# or shooting a 420 gr arrow at 280 fps.

    What is marked on your limbs for DW? If you ordered 60# DW, you shouldn’t have to back off your bow to minimum to get what you want. Besides, as you back off the bow, the DL will increase by 1/2″ or more.

    Take it back to the dealer and have it sorted out. {#emotions_dlg.mathews_peace}

    March 11, 2014 at 1:18 am #622406 Back to Top REPORT
    priz
    Priz

    Joined: 8/22/2008
    Gjarcher   all is correct on the limbs as I said   60#/27.5  I was surprised to see it draw 67 out of the box.  I checked my scale on my DXT and it still pulls 60 so I think my scale is correct.  As for the arrows,  they are what I already had before I got this bow.  I have not yet put together an arrow system for my ChillR yet and was looking for advise.  I am not up to speed with other products and trial and error can get expensive.  Believe me I would have preferred the bow to draw 60# out of the box or I would have just got the 70# :)

    thanx to you and Hotshot for the advise.  it is much appreciated as I am still learning

    March 11, 2014 at 6:20 am #622408 Back to Top REPORT
    combathm
    CombatHM

    Age: 28
    Joined: 8/25/2013
    Location: NC
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    That is some good speed, especially for some heavy arrows. I believe you are good at 400 Spine, but it doesn’t hurt to see how your bow tunes to 500 spine arrows.
    CombatHM2
    March 11, 2014 at 8:59 am #622411 Back to Top REPORT
    gjarcher
    gjarcher

    Age: 71
    Joined: 10/3/2006
    Location: Colorado
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    I still recommend taking it to your dealer on two accounts:
    – As my memory serves me, Mathews tech says that limbs should not be more than 4 lbs over rated draw weight, otherwise they are overstressed and subject to failure. Perhaps the limbs are mis-marked from the factory, or the bow is not properly setup. Either way, your dealer and Mathews should get involved, IMHO.
    – You ordered 60# limbs and fitted for a 27½” draw length, and you should get what you paid for. You shouldn’t have to back off the bow 4 turns to get 60# DW, causing the 27.5″ cam to actually draw closer to 28¼”. (at full draw have someone mark the shaft where the center of the berger hole (rest bolt hole) is, then measure from the throat of the nock to the mark and add 1.75″ to get True Draw Length.)

    As for arrows shooting 67#/27.5″ ChillR, Carbon Express recommends the Maxima 350-series (.337″ spine) using the Adj DW worksheet and chart, Gold Tip recommends one box to the right of the chart values, or Group 4, which is .340 spine shafts, Victory Archery recommends the 350-series, or .350″ spine shafts.

    For arrows with the ChillR set at 60/27.5″, the .400″ spine will be good for target/field points and maybe mech heads, but slightly weak for fixed blade broadheads. You’d be better off with a .350 or .340 spine for a hunting shaft left a bit long, like 28″, and tuned with a bit heavier point/FOC, like 125-gr.

    If you are planning on buying arrows, I’d recommend using South Shore Archery. Jerry will determine the proper spine and length for the type of shaft you chose, including the adapter/insert weights, etc., add any wraps and fletch to your specs, all for a very competitive price. There are a number of forum members who have used SSA and have been very pleased, both with workmanship and delivery time.

    http://www.southshorearcherysupply.com/index.php

    As far as changing the max DW to 60#, letout about 5 twists in each cable, and let out about 7-10 twists in the string , then recheck DW/DL with limb bolts turned down max, then backed off ¼-turn. That should get you down close to 63# or 64#, and the  DL should be close to 27½”. Repeat using fewer twists if you need to get closer to 60#, and add or letout twists in sting to get DL correct. Once the bow is where you want it for DW/DL, then tweak the cables to get the cams in the timing window, then do a Creep Tune to get a solid back wall and eliminate and vertical spread in the group pattern. If you don’t have access to a bow press, you’ll have to get your dealer to do this.

    … hope this helps. {#emotions_dlg.mathews_peace}

    March 11, 2014 at 9:10 am #622414 Back to Top REPORT
    bow-drawn
    Bow Drawn

    Age: 63
    Joined: 11/14/2007
    Location: Ohio
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    I totally agree with gjarcher. I’d be taking that bow back before doing any thing more to it. Hope this info is getting you in the right direction without spinning your wheels on this bow any further.

    I like my Chill R. It’s a 28″/70# and out of the bow it was less than 70#. After shooting it in it dropped down to around #67- or less. It sounds like what you are describing with your bow. Stuff happens. It might be an error in marking the specs on your bow or something else but it is not right. Take it back and find out.

    March 11, 2014 at 10:07 am #622422 Back to Top REPORT
    priz
    Priz

    Joined: 8/22/2008
    Thanks everyone.  I am going to stop by my dealer with it today.   I still have some things on order anyways.
    You all are Great.  I probably would have just turned it down myself without twisting the string without this forum.  On a bright note.  I do love the way the bow feels and I think Its going to be Awesome when I get it to 60#
    March 11, 2014 at 11:06 am #622424 Back to Top REPORT
    buckfever
    Buckfever

    Joined: 7/12/2004
    First of all the speed is about in line with just out of the box mine picked up a few ft/sec after it was shot in.  Secondly the draw weight is very sensitive on this bow to the cable tension. I would imagine as you shoot it in it’ll likely drop 2-3lbs. Definitely check the ATA and cam timing. But yeah good idea to make sure the limbs are actually 60lbrs.
    March 11, 2014 at 2:35 pm #622446 Back to Top REPORT
    bow-drawn
    Bow Drawn

    Age: 63
    Joined: 11/14/2007
    Location: Ohio
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    Draw board video You tube video that has several important pointers. Part one shows some of things to make one.
    March 11, 2014 at 7:46 pm #622468 Back to Top REPORT

    wvbowhunter98

    Joined: 12/1/2012
    I wouldn’t worry about it pulling 67 my creed xs was 75 out if he box after we shot it a bunch at the dealer it’s settled at 73 and my chill r came in at 74 and has stayed there it’s shooting a 430 grain arrow at 314 consistent
Viewing 11 posts - 1 through 11 (of 11 total)