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Main Boards => The Bowyer's Bench => Topic started by: Zradix on August 01, 2011, 11:55:00 PM

Title: What is inherently wrong with this design?
Post by: Zradix on August 01, 2011, 11:55:00 PM
Looking at one of Dick's forward scouts got me thinking...
Nice looking bow by the way Dick!

What about a forward handled takedown with straight limbs that point a little forward?

I have never seen this.
Makes me feel it's most likely an old idea that's been discarded for good reason.

Or...I just haven't been looking long enough..lol

Here's a very rough pic of what I'm thinking.
In truth, I feel this pic has the limbs angled way too far forward, but it gives the idea.

The second pic w/ green limbs is closer to what I'm thinking.

I guess my thought was trying to make a 3 pc "hill" style bow with some more preload.
Seems to me making a bow with straight limbs might be a whole lot easier than curved.

Thanks for the input.

  (http://i748.photobucket.com/albums/xx121/Zradix/takedownidea1.jpg)

(http://i748.photobucket.com/albums/xx121/Zradix/takedownidea2.jpg)
Title: Re: What is inherently wrong with this design?
Post by: KellyG on August 01, 2011, 11:59:00 PM
build it and let us all see.
Title: Re: What is inherently wrong with this design?
Post by: fish n chicks on August 02, 2011, 12:09:00 AM
my first question is how do you get it to brace height. other than that, i;d love to see it.
Title: Re: What is inherently wrong with this design?
Post by: Inuumarue on August 02, 2011, 12:39:00 AM
From a design point, I think you might run into problems at the limb/riser connection.  If you use the traditional pin and screw set up a limb that is not stiff enough can pull away from the riser and smack back when loosed.  If you reverse the pin and bolt you have made a nice second class lever which would want to pull the bolt out.  But we see the same problem in a traditional take down.  My bet is provided the limbs have a stiff enough base and the retaining system is sound enough there would be very few problems.  Give it a shot?
Title: Re: What is inherently wrong with this design?
Post by: Dick in Seattle on August 02, 2011, 01:14:00 PM
Interesting...  my objection would be that I don't much like the looks of it (or most three piece bows) and would be a pain in the ... to build compared to a true traditional bow.  

That said, I'm actually working on just about what you suggest, a Forward Scout with reflexed limbs.    Won't be takedown, though, because I use the hinge takedown system and it doesn't work on a curved riser.   My suspicion is that this bow won't accomplish much in terms of difference from a standard Scout, maybe a few fps.   I have parts ground out but won't be able to get it laid up for a few weeks.
Title: Re: What is inherently wrong with this design?
Post by: Zradix on August 02, 2011, 04:35:00 PM
I'm sure myself and others will be interested in what you find.

My thought was it might stack a little less because of the string angle being better.

I've never shot a straight limbed bow.
one of those things on my need to do list.

I've been reading the HH bug thread quite a bit among others to try to get a understanding of hoe they feel.

Sounds like they might have a little more shock than other designs...or they might not...lol

I'm just trying to figure out how to build a nice forgiving bow that will be fairly easy to build.

I don't have barrel sanders or other nice tools to use. I'm worried about getting the fades of the riser nice by hand.

Also, don't have tools for making a nice curved mold for curved limbs.

I do have a nice table saw could use to make square limb seats though.

And I do have flat things I could use for straight limbs...and you can buy wedges pre made.

I'd like a bow 64" or so long... Though I think I'll need longer as I draw 28" from the grip to the string.

While writing this I thought about a straight limbed bow with a short "kink" in the tip.
Almost like a static recurve just much shorter.
But still have no string/limb contact at brace.

Heck I don't know...lol
I just don't want to spend $$$ on something that doesn't shoot well...lol
All in effort to have a better string angle.
Title: Re: What is inherently wrong with this design?
Post by: Swissbow on August 02, 2011, 05:03:00 PM
It will add preload for sure, but it will also make the bow less stable and less forgiving while drawing. I guess it will probably have the same characteristics like a pure reflex design. An experienced shooter with proper form will be able to shoot it consistent. But personally I prefer a bow that is easy to shoot and has power. IMHO the best design for a longbow/hybrid bow is the deflex/reflex profile, because it combines stability ( forward riser ) with power ( reflexed limbs ).

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Andy
Title: Re: What is inherently wrong with this design?
Post by: Badwithabow on August 02, 2011, 05:42:00 PM
Apex makes a nice rear mounted take down sure he'd offer up some sound advice
Title: Re: What is inherently wrong with this design?
Post by: Sixby on August 02, 2011, 09:57:00 PM
Bear made some heavily reflexed bows like that. They would shake your teeth out.
God bless you all, Steve