Author Topic: Best and simplest 3 pc takedown system  (Read 2330 times)

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Offline arachnid

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Best and simplest 3 pc takedown system
« on: December 05, 2015, 01:25:16 pm »
Hi guys.

I really want to make myself a 3pc takedown, something very compact I can take in my
backpack for field trips (thats why I`m not going for a 2pc takedown).
I plan on making the limbs out of bamboo backed ipe and I`m shooting for 35-40# tops. It`s going
to be a to-go bow for fun/stumping.

The main challeng is the takedown system and the limb alighnment. I`m in a bit of fear to make
a simple bolt and threaded insert system, becuae it means I have to drill through the bamboo and it might split.

I`d be glad to see some suggestion for an easy-to-make system

Thanks in advance

Dor

Offline PatM

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Re: Best and simplest 3 pc takedown system
« Reply #1 on: December 05, 2015, 02:01:00 pm »
If you drill carefully with the appropriate bit you won't have a problem.  You can always temporarily glue a piece of linen or glass cloth in a patch over the to be drilled portion to make sure nothing tears, splits or splinters.
 Here is a link to Marc's page that shows a simple method with a thru bolt system  that eliminates the threaded insert.
http://ironwoodbowyer.com/Composite_Bows.html

Offline arachnid

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Re: Best and simplest 3 pc takedown system
« Reply #2 on: December 05, 2015, 03:14:13 pm »
Thanks PatM.

I`d like to see more systems, if there are any....
Oh,any other method to insure limb alighment other then alighment pins?

Offline PatM

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Re: Best and simplest 3 pc takedown system
« Reply #3 on: December 05, 2015, 04:22:10 pm »
I'm sure you could just do the same glass/carbon socket used for a two piece and have each limb insert into its own socket.

Offline dragonman

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Re: Best and simplest 3 pc takedown system
« Reply #4 on: December 05, 2015, 04:32:17 pm »
heres a 3 peice takedown I made some years ago....it worked pretty good


http://www.primitivearcher.com/smf/index.php/topic,26304.0.html
'expansion and compression'.. the secret of life is to balance these two opposing forces.......

Offline arachnid

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Re: Best and simplest 3 pc takedown system
« Reply #5 on: December 05, 2015, 04:46:27 pm »
Thanks Dragonman... but I didn`t understand how did you finally attached the limbs?

Offline arachnid

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Re: Best and simplest 3 pc takedown system
« Reply #6 on: December 06, 2015, 05:22:28 am »
Did anyone tried to make something like the Bob Lee Stabi-lock system?
Seems like a very good system. I`m thinking of making a combo- groove for limb alighnment and bolt+insert to fasten the limb.

Thoughts? Ideas?

Offline PatM

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Re: Best and simplest 3 pc takedown system
« Reply #7 on: December 06, 2015, 07:50:14 am »
I thought you were  already worried about the bolts and pins without adding more stuff?

Offline arachnid

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Re: Best and simplest 3 pc takedown system
« Reply #8 on: December 06, 2015, 07:59:58 am »
What I ment is, instead of using a pin for alignment I'll dig a 1/2" wide groove (using a chisel) in the riser pad. Then, I'll glue a 1/2" wide square piece of wood to the limb. The square piece will be inserted to the groove for proper alignment. The fastening will be done with 1 bolt.
It's just seems to be a better solution for me, given my bad experience with alignment pins... My drill sucks...

Offline PatM

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Re: Best and simplest 3 pc takedown system
« Reply #9 on: December 06, 2015, 08:35:15 am »
Sounds like you're replacing one complexity with an even more complex one.

Offline PEARL DRUMS

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Re: Best and simplest 3 pc takedown system
« Reply #10 on: December 06, 2015, 08:48:25 am »
Put an overlay on the end of your limb the bolt goes through. Just like a string overlay. It wont hurt the bamboo at all and you will have a flat spot for the bezel and washer to sit on.
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.