short bow advice- updated pics help

[Badwithabow]

Ok so this spring I designed and built a 54 in bow and I love it short and sweet @54 lbs it shoots a 535 gr arra 160fps.

Here's what I'm pondering; my 1st build was an 18 in riser with limb fades starting at riser, I get a miniscule amount of vibration. The few that have shot the bow like it but I am never satisfied. I was wondering in order to get a LOL mo performance out of this design should I maybe go to a 16in riser and start my limb fades 2in from riser or stick with 18 in riser and move fade 1-2 inches out doesn't really start stacking to bad now til about 29.5 inches. I love this design it is very hunter friendly just hoping to make it better.

Thanks in advance

[Badwithabow]

Here is a.full draw pic took a little bit to get used to the string angle but wow she's fun to handle LOL


 

[Trux Turning]

Hey- post a picture of it at brace height- the full draw picture looks like it could use a p-lam to push the bend further out on the limb.

[Badwithabow]

 

Here's a couple let me know what ya think

[bjansen]

Looks to me that the vibration is coming from those heavy bending areas near your fades.  I would try to either 1) add a p lam like trux mentioned or 2) add more taper  to you lamination stack to get the bend more out in the limbs.

[Badwithabow]

Ok now could I acomplish this by moving my limb fades out from my riser and maybe making my tips a oil thinner? Sorry I'm by no means a pro just learning as I go

[Badwithabow]

Also any link to exactly what a p lam is I see the term just want to know 100% what it is

[jess stuart]

A powerlam is just a thin tapered lam that extends the riser length.  Could do the same with a longer riser with longer fadeouts.  Power lam is probably easier and doesn't require a longer piece of riser wood.  Trux and Bjansen give good advice.  How much taper do you have in your limbs.

[Badwithabow]

I have 2 .095 @.002 core and 2 .035 paraell

[Badwithabow]

The lams that came in today are the same would an additional 095 tappered at 002  cut off past the riser qualify as a power lam?

[Badwithabow]

I made this bow with a 60 in form so i may make the next bow a 58 ntn  bow an see what happens just scares me to shorten up the limbs any more. I mean 27-9=18 inch limbs. What do you guys think?

[hova]

i think if you could whip something up laminate that would give soem bend in the handle , you would be well on your way.

almost looks to me like the limbs are too stiff on thhe outer 2/3...im no glass guy tho , so thats all im thinkin...


looks  perty tho!

[Badwithabow]

Ok let me elaborate on limb design. They are tapered to 3/4 in out to the last 8 inches then down to 1/2 in at tips.

Hmmm what if I tapered it to half inch out to the last 8 inches then took it straight out to the end? Just throwing out some thoughts.

[Robertfishes]

Would he want the powerlam to run about 5 inches past the riser fades? I used one on my last recurve build and it worked nicely. Mine was 0.030 at end of riser fade and tapered down to paper thin. Trux, Bjansen and Jess have a lot more experience than myself and will have better advise....

[Trux Turning]

I wouldn't have guessed you had .004 taper going on with your limbs but that should be plenty-- with my longbows I start at the fades and taper the limbs all the way to the nocks (if I want the nocks to be 1/2" that's how I mark them and taper to)-it does look like that mid limb is over powering the fades- hate to say I don't know if there is a standard way to figure the length of you p-lam- as a guess I would go with 3"s past the fades and run your p-lam all the way up belly ramp- something in the .030/.040 to zero thickness. If you build the next one longer it may act completly different- also I wouldn't worry about shortening the working limb with a p-lam- it will just move the bend out from the fades.

[Robertfishes]

This is my first attempt using a power lam, the 30-06 bullets mark the end of riser fade and end of power lam. Right or wrong I used a veneer of 0.030 honduran rosewood and only faded the last 1 1/2" of each end, I ran it on the belly side between a red elm taper and the 0.020 ebony veneer  

[Badwithabow]

I like it...

ok sooo when i got home today i had a few min to look at my previous design and if i just go from fade out to nock it looks as though i would have a SOLID 1/8 in on both sides to trim off at just about mid limb... I'm thinking before i glue up another i'm going to re sand this one down and see if it improves the overall pic if not o well, shave a few pounds off and my wife can have it lol...

[Trux Turning]

It will be interesting to see what the limbs look like after you reshape them. May not need p-lams or other changes.

[Badwithabow]

Exactly what I was thinkin trux ill try it tonight and see what happens ill be sure to post pics

[Badwithabow]

Ok here's the new pics any better to you
 

Ok I think no way the bow is smooth but here are the draw numbers from 27-31

 

And the hand shock dropped noticeably.... Get more time with her Tom...... What do you guys think