Limb Vibration

[JT of PA]

Just got confirmation of a torn labrum on left shoulder. Any weight lightening of the crossbow would be helpful. Only thing I could think of was the dissipator bars.

My Ibex came with dissipator bars and I have since added the S5 system.

Watched a couple videos online that show Excalibur crossbow in use by slow motion cameras. Yes, the limbs move about but I am sure that is part of the design.

If I experiment with lighter arrows will the excess force not pushed into a heavier arrow be forced in the limbs and weaken them over time? (Yep, I may be over worrying here. )

How concerned should I be of limb vibration? And if it is something to be concerned of; how can the Matrix line not utilize dissipator bars?

If your reading this and chuckling, I understand. Its just my Ibex is my new baby and I am still learning what is and is not good for it.

[vixenmaster]

BillT says the limbs be fine as long as yer at 350 grs or more! Why worry jus shoot yer Excal & enjoy it

[birddog1520]

JT, My Axiom did'nt come with any kind of dampening and shot fine. I did put the S5 system on though.

Randy , The Birddog.

[JT of PA]

http://www.excaliburcrossbow.com/catalo ... or_bar_kit

The above picture shows a front-shot of the dissipator bars. If you take the gray bar off that has the engraved logo do you get a bar that is shorter to replace it? If so, it seems the gray bar would just have to go past the black-vertical metal band.

[flightattendant100]

http://www.excaliburcrossbow.com/catalo ... or_bar_kit

The above picture shows a front-shot of the dissipator bars. If you take the gray bar off that has the engraved logo do you get a bar that is shorter to replace it? If so, it seems the gray bar would just have to go past the black-vertical metal band.

You will get a cone washer( it replaces the bar) and will need shorter bolts for the two smaller bolts on each end.Danny Miller has all this and will be happy to help you.He can guide you through it with ease.

[j.krug]

Remove the limbs. This is sure to greatly decrease fps but will lighten the front end of the bow significantly!!

[Masboy]

Hope your shoulder gets better soon John! I don,t guess cocking my vortex done that to you? I cut my bars off and rounded the edges then polished them on the end and don,t miss them at all !!!

[colouredchameleon]

The cocking of your bow should be more of a concern than weight.

You could carry your quiver on your belt which would reduce the weight a bit.
Also exercises to improve strength and stability around your shoulder are an essential part of your rehabilitation.
You may want not want to hear this but you should really consider a short time off from using your crossbow more than anything else.

Do exercises to increase shoulder strength (rotator cuff).
and to strengthen the muscles around your shoulder blade.


With a Labrum tear of your shoulder, you should really only expect to return to normal activity in six to eight weeks. So take the time to allow it to recover or pushing it could result in the need for surgery which could require a much longer recovery period. Sometimes short term caution ( time off from the activities that could result in further damage is the best course of action or else expect a much worst prognoses long term

[Boo]

If the pain is from the side that is holding the bow up try holding the like in the link below. It's pretty much how I shoot off hand with the exception that I put the web of my hand infront of the trigger guard. It should take some strain off of your shoulder.
http://www.riflesilhouette.com/instruct ... iques.html

[JT of PA]

Hope your shoulder gets better soon John! I don,t guess cocking my vortex done that to you? I cut my bars off and rounded the edges then polished them on the end and don,t miss them at all !!!

Nope Masboy ... I did this helping out with Youth-League Tackle Football. Oh, the joy of growing old.

[JT of PA]

If the pain is from the side that is holding the bow up try holding the like in the link below. It's pretty much how I shoot off hand with the exception that I put the web of my hand infront of the trigger guard. It should take some strain off of your shoulder.
http://www.riflesilhouette.com/instruct ... iques.html

Thank You Boo for the link. I will try it here soon and see how my shoulder feels.

[JT of PA]

The cocking of your bow should be more of a concern than weight.

Do exercises to increase shoulder strength (rotator cuff).
and to strengthen the muscles around your shoulder blade.


With a Labrum tear of your shoulder, you should really only expect to return to normal activity in six to eight weeks. So take the time to allow it to recover or pushing it could result in the need for surgery which could require a much longer recovery period. Sometimes short term caution ( time off from the activities that could result in further damage is the best course of action or else expect a much worst prognoses long term

Thank You for the information. I am not too excited by my shoulder specialist and his words. Basically, he said he could operate but I would lose a good amount of range-of-motion and probaby be stiff the rest of my life. Also, he said the labrum cannot heal on its own and that the sharp pain I experience and loss of strength is probably something I'll have the rest of my life. Surgery or no surgery, neither sounds promising. I have 2 months of physical therapy in (24 sessions) and am now on the "work out at home" schedule. Problem is cocking my handguns hurts and I can no longer shoot my recurves. Crossbow was all I had left. Day to Day and see what happens. Thanks again for the information; very kind of you.

[Normous]

This is what I did to remove weight fronm the front end of our Vortex an Equinox , the end result is safe and also noticable.
1) remove DB bars
2) Lighten stirrup by sanding/rounding edges then drilling 1/4" holes every inch. Between those holes I drilled 1/4" only halfway through.
Next I replaced stirrup mounting screws with ones half as long to save weight.
3) With common sense prevailing first and foremost I I removes a noticable amount of weight from the riser using my drill press and various sized bits for a swiss cheese look. Some holes were drilled entirely though some not. Not reducing integrity while reducing weight was important.
4) I found cutting the quiver mount shorter then drilling lightening holes helped too. The same can be said regarding the scope mount. Mine is full of holes.
5) Use a Quick 3 quiver...the lightest on the market.

[Peacemaker]

I tore my labrum about 23 years ago and was miserable. Anything that required my elbow to go higher than my shoulder was excruciating.

No, it did not get better on it's own. After 9 months, after trying PT, cortisone, and god knows what else) I went under the knife (arthroscopic, but with the warning that if they went in and things didn't go as planned, they would need to filet my shoulder instead).

The rehab was a few months and miserable (at least for the first month) but for the past 22 years I have been virtually unbothered by my shoulder. The only time that it acts up is when I put a new scope on my 12 gauge, or buy a new one....the sighting in when shooting slugs is......painful.

Leave the crossbow alone....fix the shoulder. You have more that you will want to do in life than just shoot the bow, anyway. That's my expert internet medical advice. And no, I am not a doctor.

[robertyb]

Remove the limbs. This is sure to greatly decrease fps but will lighten the front end of the bow significantly!!

It sure makes cocking easier though.