Author Topic: Ilf riser design thoughts  (Read 413 times)

Offline Hoosierarcher88

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Ilf riser design thoughts
« on: December 04, 2019, 05:01:14 AM »

Im wanting to do an ilf riser build this spring so the brainstorming process has started. Below are my first 2 design plans. Both are right at 13" ilf risers but that is where the similarities end. A would have the limbs and bolts recessed a bit to be a little more streamlined with the riser and the riser has more deflex putting the deepest point of the throat of the grip in front of the limb bolt. B is a more traditional recurve riser shape and will be easier to make but will have the limb bolts exposed and limbs mounted right to the front of the riser. B will not have as smooth of a flow to the limbs but will utilize a little lower brace height and be a bit faster while A should be smoother and more stable. Which design style would you all lean more towards?

Northern mist Shelton 66" 53# @ 28"

Online Crooked Stic

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Re: Ilf riser design thoughts
« Reply #1 on: December 04, 2019, 07:37:06 AM »
Like I said B on another page. With an overlay or lays same thickness of your limb butts. Much easier and stronger. Lot of room for error on the cutouts on A.
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Online jess stuart

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Re: Ilf riser design thoughts
« Reply #2 on: December 04, 2019, 01:00:12 PM »
I think Mike has the right idea.  There used to be a ILF riser build a long on one of the forums by Bobmiester  it was farily detailed and Bob turns out some really nice bows.  Hopefully it is still around.

Offline Hoosierarcher88

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Re: Ilf riser design thoughts
« Reply #3 on: December 04, 2019, 01:02:41 PM »
By my thoughts my hardest part is going to be making a 13" riser work. Doesnt leave much room between those limb bolts.
Northern mist Shelton 66" 53# @ 28"

Online Captain*Kirk

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Re: Ilf riser design thoughts
« Reply #4 on: December 04, 2019, 01:03:03 PM »
I prefer B as well.
Aim small,miss small

Offline monterey

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Re: Ilf riser design thoughts
« Reply #5 on: December 04, 2019, 01:04:41 PM »
What are the considerations for limb pad angle with an ILF?  Is it standardized?
Monterey

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Offline Hoosierarcher88

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Re: Ilf riser design thoughts
« Reply #6 on: December 04, 2019, 01:06:10 PM »
Usually limb pad angle is around 18°. Im not sure the exact angle on these, i kind of cheated and copied the angle from my 21" aluminum riser.
Northern mist Shelton 66" 53# @ 28"

Online Crooked Stic

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Re: Ilf riser design thoughts
« Reply #7 on: December 04, 2019, 04:25:39 PM »
Nothing wrong with a little copy here and there. I just did two 13.5 risers. I have to look to be sure but the bolt holes are 3 5/16s from the end. That build Jess talks about is on POA and he used a machined insert and routed the riser They called them donkey plates Feral Donkey over there machined a few out. I have a set somewhere. If I can find them you are welcomed to them.
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Online Mad Max

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Re: Ilf riser design thoughts
« Reply #8 on: December 05, 2019, 10:01:07 AM »
This riser is 12-3/4" long, there is 2-7/8" of  limb butt on the riser. the bolt is 1-3/8" from the end of the riser.
It's not a Ilf butt some info..
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Online kennym

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Re: Ilf riser design thoughts
« Reply #9 on: December 05, 2019, 06:02:01 PM »
Here is one I made, don't want any more of em! LOL

http://www.tradgang.com/tgsmf/index.php?topic=156703.0
Stay sharp, Kenny.

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