68 in. Kennym bow !,64 in.,60in.,58 in. & mods & builds FHLB & R/D !

[Forwardhandle]

Hi Fellas  I  wasn't going to make another bow tell winter but day dreams of making a 68 in. Kennym  R/D  with tip wedges & power lam got me going has any body else here made one beyond the 64 in. ?

[bigbob2]

Yep made more than a couple at 66'' and also 2 at 68'' with the reverse taper tip wedges you mention. They are still a really good performing bow with no bad habits.

[Forwardhandle]

Ok thanks Bob I have a couple questions for you if you don't mind , I'm wondering how you calculated your stack thickness ? I'm looking for 48 lb. @31 also was considering a more shallow glass reinforced footed riser with only a depth of 1 1/2 in.  But Kenny pointed out the shock factor with lighter riser so some thing to ponder , I appreciate the response or any other advice.
                                                                                                     Ritchie

[bigbob2]

I will have to consult my records tomorrow and will let you know.I think the last one at 68" was very close to that weight

[Forwardhandle]

Ok thanks Bob no rush still deciding on riser wood & such but appreciate your help  Thanks !

[kennym]

 

[bigbob2]

Last 68" I built was 50# @31" so drop a little of this stack should get you close.  3 lams at .001 taper and total of .220 and one parallel of .065 . Probably make parallel little under . 060 and glass total of .080 should go close. I incorporated a reverse taper wedge of 10" to help with string angle too. Works great.

[Forwardhandle]

Thank you much Bob I appreciate it I will get the guy above working on it , I'm just having a heck of a time deciding wood combinations ,I feel like a kid playing with lego's piling wood blocks together looking for the right combo....lol Thanks !

[bigbob2]

Your most welcome. Hope stack works for you.

[Forwardhandle]

I'm sure it will, I will bounce it off of Kenny he hit the last 2 bows dead on , If you got a minute could you comment on how that bow draws, I'm building this one for 3 /d / hunting the 64 in. Draws smooth at are draw bet the 68 in. Is as smooth as a baby's butt ?

[bigbob2]

It was not for me, but I shot it a fair bit while tillering etc, and it performed very well, smooth and quick. I am sure you will be happy with the outcome Kenny will see you right, he is a good man.

[Forwardhandle]

Yep he sure is , Thanks for the help there Bob I appreciate it ! 

[bigbob2]

Not a problem,glad to help!

[Shredd]

Very curious as to how things go...  I have a 64" design that is very similar to Kenny's...  I been wanting to build a 68" bow...  I am thinking of just moving the power lam section out 2 more inches on the limb...  Does anyone or Kenny have any insight on that??

[kennym]

Thanks guys,  I need more coffee before I think this morning.

Rich, I build nearly all my bows with the superlam which has a powerlam builtin the taper, adds 3to 4" to riser length. Weight gain is around 2# and fps added seems to be about 2 fps from the standard lam.

It sure won't hurt to add a power lam with limbs that long. Build two and tell us how it does on 68"....

Bob, did you do anything different at riser or tips?

[Shredd]

   Cool...  I call my lam with built in wedges a Hyper-Lam...  I just used the term power lam so everyone knows what I am talking about...

[bigbob2]

All just the same as shorter bows except for the reverse wedge I made it quite long at ten inches but seems to work ok.

[ty_in_ND]

Rich, I build nearly all my bows with the superlam which has a powerlam builtin the taper, adds 3to 4" to riser length. Weight gain is around 2# and fps added seems to be about 2 fps from the standard lam.

Question for you, Kenny: what would be the difference in performance (as far as you could guess if you don't know) between a 68" bow with an 18" riser + one of your powerlams vs a 64" bow without said powerlam if they end up the same draw weight?

[kennym]

Wild guess, the 68" would be 3.7 fps slower. 

Really,I have no idea but the 64" has plenty of working limb so I'm thinking the 68" will be smoother but slightly slower.  Also the tests I did on the 64" showed the superlam to pick up a couple fps, which is basically just extending the riser.

Ritchie should be able to give us a hint in a bit since he has a 64" and is getting ready to build a 68" ( last one for this year )  that will be close to same weight.

[Forwardhandle]

Well the way work hours are going this year might make a honest man out of me might be the last this year 🙄 But Im not so convienced that this 68 will be slower with heavy arrows ,I plan on shooting DF 600-650 grain arrows  ,Im building it as a pig hunter/3d bow ,but for arrows 450-500 grain Im going to guess Kennys 60 in forward handle bow is going to be the winner in terms of speed it has a lot of forward loading (early string tension ) its a out right Rocket launcher , I will test all 3 with different weight arrows the test for the 64 & 60 will be in a couple of weeks I will post the Numbers.