Author Topic: Quad lam build...  (Read 4515 times)

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Offline Roy

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Quad lam build...
« on: March 01, 2014, 11:19:35 pm »
Osage tapered belly lam, Red Elm tapered core lam, Osage tapered core lam, backed with a tapered piece of bamboo, cocobolo riser and cow horn tip over lays. 58.5 string groove to string groove, 53 pounds at 28". 1 1/4 wide at flares and I hold that 1 1/4 width out another 6", then a straight taper to 1/2 wide at tips.






Offline Roy

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Re: Quad lam build...
« Reply #1 on: March 01, 2014, 11:23:03 pm »
After the lams are glued up and dry, I lay the riser block on it's side and trace out the profile of the bows riser section on the riser, then cut it out and use hand tools to get a perfect fit, then glue it up.

Offline Roy

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Re: Quad lam build...
« Reply #2 on: March 01, 2014, 11:26:05 pm »
I also flip the tips of the belly lam before glue up. And I end up with a sweet looking bow.
« Last Edit: March 01, 2014, 11:39:27 pm by Roy »

Offline Roy

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Re: Quad lam build...
« Reply #3 on: March 01, 2014, 11:36:56 pm »
Here are the cow horn tip over lays, courtesy of Trapper Rob.

Offline budgolf

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Re: Quad lam build...
« Reply #4 on: March 01, 2014, 11:37:29 pm »
Nice! That needs a build along!

Offline Roy

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Re: Quad lam build...
« Reply #5 on: March 01, 2014, 11:48:00 pm »
All done on the tree. Top limb is to the right here. I synced, timed the limbs so it has a negative 3/32 tiller.
« Last Edit: March 01, 2014, 11:57:55 pm by Roy »

Offline bow101

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Re: Quad lam build...
« Reply #6 on: March 02, 2014, 12:02:15 am »
Nice looking bow, and awesome job on the tips... 8)
"The privilege of a lifetime is being who you are."  Joseph Campbell

Offline bubby

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Re: Quad lam build...
« Reply #7 on: March 02, 2014, 12:38:51 am »
Yep, you end up with a sweet looking bow alright, nice one Roy, bub
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline bubby

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Re: Quad lam build...
« Reply #8 on: March 02, 2014, 01:29:06 am »
Roy how much deflexed and reflex did you put in this bow?
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline PEARL DRUMS

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Re: Quad lam build...
« Reply #9 on: March 02, 2014, 08:25:46 am »
Cool bow old fart. That about as short as you make them. I like it!
Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.

Offline SLIMBOB

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Re: Quad lam build...
« Reply #10 on: March 02, 2014, 09:19:13 am »
Very nice Sir.  Love the shape of it.
Liberty, In God We Trust, E Pluribus Unum.  Distinctly American Values.

Offline NeolithicMan

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Re: Quad lam build...
« Reply #11 on: March 02, 2014, 10:13:54 am »
I have neer done a lam bow so forgive me, but whats the difference in tri and quad lam performance wise? I was led to believe a backing is for tension, core for power, and a belly lam for compression strength. Is the forth for looks or is there another function?

Its a beautiful bow and I wouldnt min gettin my hands on one!
John, 40-65# @ 28" Central New York state. Never enough bows, never enough arrows!

Offline IdahoMatt

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Re: Quad lam build...
« Reply #12 on: March 02, 2014, 11:16:46 am »
Man Roy your bows are first class for sure.

Offline Roy

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Re: Quad lam build...
« Reply #13 on: March 02, 2014, 12:11:14 pm »
I used 6 inch end posts, 2 3/4 inch mid limb posts and a 3 3/4 inch center post. The mid limb posts were placed half way between the flares and limb tips. Quad lam just has 4 sections glued together. I used 4 because the belly lam I had was not thick enough to get the weight I was looking for. I doubt if there is any performance difference.

Thanks guys..

Offline bubby

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Re: Quad lam build...
« Reply #14 on: March 02, 2014, 12:51:05 pm »
thank's roy i'll have to try that , bub
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹