Answer to "STRING QUESTION" concerns

Bill T · Post by **Bill T** » Wed Mar 23, 2005 9:59 am

First, in the last few months we've started putting endless loop strings onto our new bows to replace the old Flemish ones. The endless loop strings are not as quiet or as strong as the Flemish, but they are much easier to use as you just put them on and go shooting. No twisting, no stretching them in, no nothing. The marks on the deck are guidelines for setting up flemish style strings and are not meant to be used for endless loop strings. This will be included in the instructional video when I reshoot it next month and till then I apologise for not being clear in this.
On every crossbow I've ever seen with the exception of "air deck" bows the arrow will have wear marks on the butt end from the groove. This comes from the downward pressure caused by the shafts vertical bending or "paradox" on accelleration. Basically the shafts tip and butt both want to move downward in response to the center moving upward as it leaves the deck. Marks on the sides of the shaft will be an indicator of tiller issues, the heavier marks being an indication of which side the heaviest limb is on. Now before everyone jumps up and down ands complains about tiller a quick explaination of what tiller is is appropriate.
Tiller is the balance between the two limbs. The concept of "perfect" tiller is just that, a concept. Perfect tiller, if even possible when the limbs are at rest, would swing from side to side as the limbs are drawn, changing with every inch of travel. In manufacturing we, like all manufacturers, are limited to finding the compromise between perfection (very expensive), and good enough (affordable). Our processes are accurate enough that limbs are within very acceptable tolerances if everyone does their job right, and most limbs will draw well within a pound of any other limb. We screw up sometimes, and we are not to proud to admit it, but the vast majority of our limbs are tillered well within the bounds nescessary to ensure smooth, accurate shooting.
If you want to see just how little it takes to throw tiller off enough to be visible just put the butt of your crossbow on the ground and push down on one limb while watching the string on the deck.
Anyway, what really counts is that you can shoot groups, and tiller has to be out a bunch to affect accuracy! Hope that this clarifys these issues!

Boltejector · Post by **Boltejector** » Wed Mar 23, 2005 10:04 am

Very well explained! Thanks Bill.

Maritimer · Post by **Maritimer** » Wed Mar 23, 2005 10:10 am

Thanks BillT

ComfyBear · Post by **ComfyBear** » Wed Mar 23, 2005 1:01 pm

Bill T. wrote:On every crossbow I've ever seen with the exception of "air deck" bows the arrow will have wear marks on the butt end from the groove.

Anyway, what really counts is that you can shoot groups, and tiller has to be out a bunch to affect accuracy! Hope that this clarifys these issues!

I can attest to the above two statements. Over the years, with the exception of the Relayer, Paradox and ExoMax I've owned half a dozen Excaliburs, at least one of every other model that was/is made.

Whether I was just fortunate or not, I've never noticed even the slightest difference in tiller in any of them. However what I have and still notice is that every single one has caused slight wear on the last inch or so of my bolts. Even so, in all cases, the accuracy of all of my bows has been nothing short of amazing. Each and every one of them has been a tack-driver, no matter if I use aluminums or carbons.

speedball · Post by **speedball** » Wed Mar 23, 2005 1:53 pm

thanx Bill T, I am so impressed that the president of a major archery manufacturer will spend his time answering questions to "customers" personally!!!, This alone has made me decide to buy another excalibur, i think an exomax. SO MUCH CAN BE LEARNED HERE FROM BILL T, MORE COMPANY'S SHOULD BE MORE INVOLVED WITH THEIR CUSTOMER'S AND MAYBE THEY WOULD SEE RESULTS AND ALLEGENCE LIKE HERE AT EXCALIBUR!!!!!!! i personaly would like to thank you sir for a fantastic product!!! Please continue to produce the best crossbow's MONEY CAN BUY!!!

gad · Post by **gad** » Mon Mar 28, 2005 9:16 am

Thanks Bill. And be sure that your personal treatment about these questions are part of excalibur success.

These explanations take a lot of doubts of from my head.
My two bows are shotting and grouping very well.

Jim C · Post by **Jim C** » Mon Mar 28, 2005 9:36 am

are the flemish twist dacron and FF strings still going to be available? for target shooting the PB, the FT is better for several reasons including more latitude in playing with the brace height.

For hunting I like the fact they are quieter. Maybe I should call Danny and buy a bunch?

Beaver · Post by **Beaver** » Thu Apr 28, 2005 2:14 am

ttt for TYE

Vince · Post by **Vince** » Fri Apr 29, 2005 5:53 am

Bill T.

With all the Excalibur improvements over the last few years (FF compatibility, carbon arrows, machined risers, deflexed forward riser) i would think a move away from solid glass limb design will be next.

Does Excalibur forsee a move to laminated limbs in the near future?

TYE · Post by **TYE** » Fri Apr 29, 2005 6:04 am

Hey Vince, what's the different in the 2 limb types you mentioned? I know nothing about them.

Digger · Post by **Digger** » Fri Apr 29, 2005 10:07 am

deleted

GaryL · Post by **GaryL** » Sat Sep 17, 2005 2:22 pm

GaryL · Post by **GaryL** » Sat Sep 17, 2005 2:36 pm

I moved this to the top fer another person too read.

The Gay thing however reckon its best if we don't view it and it will go away.....sorry about all the smile faces but was trying like a few others to move it off the first page....wrong move I reckon....Bill or Peter will have to take care of it.

Ga.XbowCop · Post by **Ga.XbowCop** » Sat Sep 17, 2005 3:55 pm

Thank you Bill for answering my question that I sent. My bow has been shooting fine. I spent a lot more money for my Excal Bow and it is and has been worth every penny. I twisted my flemish string that came with my ExoMag 3 more twist and has been fine since. I shot one group of 3 bolts and they were all touching shaft to shaft. I will not shoot for groups no more. I just pick out a letter on my target and shoot each arrow individually. Your bow is a bow that is before its time. A friend of mine purchased another Xbow the same time i purchased my Excaliber. In less than 20 shots through his xbow the string serving had to be replaced and it will not be long before the string will need replacing. I am still shooting my original string with no wear. To make it plain and simple his bow was cheaper and will cost him more money in the long run than mine cost to purchase. His bow was not an Excaliber so I guess that is why. Thank you for this great product. Wish they would make vehicles as durable as the bows that you make.
Happy Customer,
Tim in Georgia