Primitive Archer
Main Discussion Area => Bows => Topic started by: Will H on January 07, 2014, 08:38:55 pm
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I've been experimenting a bit with different forms and came up with this R/D that I like. Haven't tillered a bunch like this other than a few Bamboo backed bows with similar side profiles. I just wanted to get some more experienced r/d eyes on what I have going on here. Thanks in advance :)
Specs are 61 1/2" NtN. Asymmetrical bow with the bottom limb (on right) 2 1/2" shorter. 1 1/4" wide to mid limb tapering to 1/2" for now. It's 45#@25" shooting for 40-45@28"
Any thoughts?
(http://i1035.photobucket.com/albums/a439/willharrison347/6BDA9F58-2C38-4B4E-8B86-5EED99A3DA1A_zpsg8p9tcxx.jpg) (http://s1035.photobucket.com/user/willharrison347/media/6BDA9F58-2C38-4B4E-8B86-5EED99A3DA1A_zpsg8p9tcxx.jpg.html)
(http://i1035.photobucket.com/albums/a439/willharrison347/902027AA-1F83-4BD3-B929-B982C43EC67A_zpsdx2slag6.jpg) (http://s1035.photobucket.com/user/willharrison347/media/902027AA-1F83-4BD3-B929-B982C43EC67A_zpsdx2slag6.jpg.html)
(http://i1035.photobucket.com/albums/a439/willharrison347/0FAB8661-0A5C-4988-B986-A85C9B04E59B_zpslonl1ueu.jpg) (http://s1035.photobucket.com/user/willharrison347/media/0FAB8661-0A5C-4988-B986-A85C9B04E59B_zpslonl1ueu.jpg.html)
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I don't have enough experience with that style to offer an opinion on the tiller Will but the bow itself looks real nice.
See what some of the others say that might know, I'll watch and maybe learn something from this. I do like that style
bow though but never did one with that much r/d, likely be a good performer when done.
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I'd say right side looks flat after the fad to mid limb. Hard to say though. The offset strap on handle is messing with my head.
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These ones are best judged while being pulled. Hard to tell which parts of the limb are working from still pics, as the bending is so subtle , and we aren't looking for a single arc or ellipse. How does it look as you pull it. Does the limb work well out to the tips? The idea of the recurve of course is to make the limb work more out to the recurve itself so it is bending the limb evenly instead of pulling it as it gets closer to the nocks.
Getting off the topic, can you show some better pics of the system you have for holding the bow? We were just talking about this on another thread about tiller tree set ups. I'm using a heavy duty Velcro strap but was thinking a hook set up would be quicker. And here it is! Please post some pics with the reasons why you went with this set up on this thread. " Lets see your tillering tree set up (Pics added)" I think this thread could be a real help to many.
I like the leather strap idea on the string as well. Just curious though as to why you've offset the handle strap so far?
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Thanks for the input guys. The limbs seem to be working pretty nice and evenly so far. Paul I was thinking the same thing. Lostarrow, I posted some pics on that thread for ya. The reason I have the strap offset so much is because that's where the bow balances with the limbs as asymmetrical as they are. I'm putting a locator/pistol style grip on this bow. I like this style grip and think the bow shoots better when the bow balances right in the deepest part of the grip. It's just something I've been playing with lately... It's a little more trouble but I think it's worth it for me ::)
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It looks pretty good will. Must be a sweet caul. I think that right limb needs a bit more flex around lines 3 and fou4 from the top. I see it in the braced profile pic too. I love the rd bow and its almost all I build anymore.
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Thanks,I'll have to check it out. I see know where you plan to put the grip. Deep shelf?
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The mid limbs need to work a little more.
With bows like this it is really, really helpful to trace the out line of the staves side profile before it's been pulled much at all. This then always gives you a definate reference and if your eyes really stop working you can go all techy....
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It looks pretty good so far,seems most of the bend is at the fads,Needs a little more bend mid limbs I would say,they don't look to be working much. Where are you at on weight and draw length ?
Pappy
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I agree with pappy and mike.....but your awfully dang close,and it ain't by much...take 10 scrapes each limb from mid limb to the tips and check it,and repeat if necessary but maybe 5 scrapes the next time cus its so close....the reflex is slightly opening and it might be at that threshold of being stubborn and not wanting to bend and all it takes is a few more scrapes to open them up just a wee bit more...so be careful....but yeah I think the mid limbs to the tips can afford a smudgen more of a bend...
Your also at the point where you should prob shape your handle and start drawing it by hand to get a true reading,and start throwing some arrows out of it IMO....I like to start throwing arrows out of them when I'm ~3" away...that way I have room to tweak it some if I need too,and I have room to dial it all in
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Thanks guys, that's just what I needed.
Mike, thanks. I didn't trace the bow but I did take a pic of the side profile before it was ever strung for that same reason. Ill post it here, it hasn't changed much, maybe 3/4" set.
Thanks Pap, it's 45@25 right now.
Blackhawk- thanks. I think that's what I'll do. I was getting to that point of just needing a little reassurance. I'll shape up the grip get some overlays goin and run some arrows through it.
dvshunter- thanks man, we posted some pics over on the life is good thread of the caul if you wanna see it. I used it and a 16" radius to give a little more reflex in the outer limbs.
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Do you have room to remove some width in those stiffer spots? If so take some off the sides first..that way you can take off some possible unneeded mass and get that lil more bend ya need...and it would smooth the bow up even more killing two birds with one stone so to speak...that's why I like to start shooting them ~3" away in case I need to remove some width in the outer thirds of the limbs and etc etc...you should know this ;) and drawing it n shooting it is going to tell you a lot right now what needs to be done to vet her to where you want her :)
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Looking good Will. Listen to these guys, they know what they are talking about. I have trouble seeing good tiller on R/D style bows. I've made a few(all wood lams) but haven't lately because they tax what little brain I have. ???
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Looking good Will. Listen to these guys, they know what they are talking about. I have trouble seeing good tiller on R/D style bows. I've made a few(all wood lams) but haven't lately because they tax what little brain I have. ???
Amen to that brother Pat! Same here!
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The tiller on these bows gives me a headache too.
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Thanks Blackhawk, that's how I was planning on getting the outer thirds moving. I'm at 1/2" tips now, I'll probably taper to 3/8"-5/16" from mid limb. The string tracks perfectly so I think I can go pretty thin. This stave is one of three sister staves (two sides and a belly) that are straight grained and CLEAN! I actually used a string line to lay them out. Pretty rare with Osage. I plan on making all three like this with minor variations to each.
I know what you guys are talking about, I started getting a headache and thought I'd post my progress for a little relief! :)
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Cool cool...can't wait to see her all done....I'm betting your gonna be loving it ;) ..oh and don't forget to cut in a shelf too ;) :laugh: 8)
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You know I'm gonna cut a shelf in >:D it's only fitting :) hey Chris could you help me calculate mass for this bow. I know they are supposed to be pretty heavy but I haven't exactly figured out how the formula works on a R/D like this one.
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One thing I like to do is trace the unbraced and braced outlines of the bow directly above it. It just gives you a good reference. Looking great so far, smooooooooooooth :)
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Will u should end up +/- an ounce or two from 18 ounces...;)