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Lam bow ?(pics added)

Started by heartlandbowyer, January 29, 2014, 07:18:00 PM

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heartlandbowyer

Want to move my working limb away from the tips about 4 inches to help with string angle. Should I throw in a tip wedge to move the working limb inward a bit? By adding the wedge and making the tip closer to static it should lessen the string angle. Is my thinking correct? Do you think it may add a little performance also? Im getting decent numbers, 180 @ 10gpp drawn to 28 finger release, maybe I'm just being a little to anal!

The bow in question is my 3 piece take down. It a 60 in and the string is just shy of 90% at 29. I probably should plot the force draw curve but I need to build a tree with a pulley system so i can do it accurately.

Thanks for your input.
Cory

chackworth3

I would say yes your thinking is correct but I would also wait and see what some guys with a little more tip wedge experience say.   From my experience it adds a couple pounds and maybe a few fps but it does aid in making a better string angle

LittleBen

May depend a little one what taper you're using. If you're using all parallels in the limb a tip wedge prolly won't do as much as if you are using tapers; since the tip is already pretty stiff with all parallels.

Bowjunkie

I would just grind a little less taper in the next one's lams and see how she worked... but I'd like to see unstrung, braced, and drawn pics and know what degree of taper you currently have before I say too much.

heartlandbowyer

Jeff, maybe I'm not as bad as I thought, bow is drawn to 29.5, looks to be still shy of 90. What are your thoughts.
   

LittleBen

Just shy of 90. Looks pretty goo to me. I wouln't try for 30+" but looks good where you are.

Also, most of the bedning is from fades to midlimb. Tips are not entirely stiff but they are not bending alot either.

I don't think a tip wedge is goign to give you alot of string angle change.

I think that to get much string angle change you're oging to need to add length or increase reflex and deflex.


Very nice bows you ahve there though!

heartlandbowyer

Ben that's kind of what I noticed too bend profile doesn't look to bad and it shoots pretty well too. It a lot easier to see stuff in a picture than it is to see when a friend is shooting. I should do a force draw curve to see how that looks.

Thanks Cory

LittleBen

Yeah, I mean maybe less taper would do something, but honestly I think the tiller looks darn near perfect and I'd call that a major win.

Make anyone who draws 30" or more buy a 62"er hahaha!

bornofmud

I would think more of adding a powerlam than a tip wedge to that design there.  Though honestly, looks great to me, don't really see a reason to change it haha. But yeah, I would just make a longer bow of the same type for people with longer draws.  If you keep the string angle too far from 90, you start losing performance.  Any more than 90 and it starts to stack.

chackworth3

Looks good right there without a tip wedge

Bowjunkie

I agree. I think it looks great just the way it is. The limbs are working nicely. I wouldn't change a thing. How much total taper is in the limbs? Nice job.

heartlandbowyer

Taper is .002 per in for 18 in then my taper reverses at -.001 to the tip so it kind of has a wedge built into it but very little. I was wondering if I should add a bit more but after seeing the picture at full draw the bow looks pretty good.

Cory

Zradix

I like em!...
...I know the takedown was the one in question...but that one piece has my attention....
If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

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