Author Topic: Riser length vs Draw weight ? (Read 2217 times)

Forwardhandle · « **on:** June 01, 2019, 09:09:49 AM »

Im working on a design this morning playing with riser length do any of you guys know does shortening a riser say by 1" have the same effect on draw weight as lengthing the limb 1" ?

Bvas · « **Reply #1 on:** June 01, 2019, 09:45:12 AM »

From my experience, they are close. But changing the limb length has a slightly greater effect than changing the riser length.

You will have the same amount of working limb either way, but will have greater leverage with the longer limb.

BMorv · « **Reply #2 on:** June 01, 2019, 11:05:31 AM »

Quote from: Bvas on June 01, 2019, 09:45:12 AM

You will have the same amount of working limb either way, but will have greater leverage with the longer limb.

My thoughts too

Flem · « **Reply #3 on:** June 01, 2019, 11:12:01 AM »

Quote from: BMorv on June 01, 2019, 11:05:31 AM

Quote from: Bvas on June 01, 2019, 09:45:12 AM

You will have the same amount of working limb either way, but will have greater leverage with the longer limb.

My thoughts too

Assuming the length of the bow remains the same and the riser is shortened, I don't see how you would not end up with more working limb?

Forwardhandle · « **Reply #4 on:** June 01, 2019, 11:28:01 AM »

Thanks guys Ben I relies its a longer limb I was wondering about draw weight differential given working percentages of the fades vs outers Im actually shortening the over all length but decreasing riser length to avoid stack at least thats my guess ! In my OP I mentioned increasing limb length vs shortening riser same diferense as far as length just diferent areas !

kennym · « **Reply #5 on:** June 01, 2019, 12:11:22 PM »

"shortening a riser say by 1" have the same effect on draw weight as lengthing the limb 1" ?"

I have only done an inch on each end but changing from a 60 to a 58 is about 6# and changing riser 2" is about 2#

So the leverage of longer limb has something to do with it but we need an engineer....

Roy from Pa · « **Reply #6 on:** June 01, 2019, 12:24:24 PM »

Ya need an engineer?

Just ask, I'm here to help.

monterey · « **Reply #7 on:** June 01, 2019, 12:28:10 PM »

They ain't talking about model choo choo trains, Roy.

Roy from Pa · « **Reply #8 on:** June 01, 2019, 12:37:10 PM »

Forwardhandle · « **Reply #9 on:** June 01, 2019, 04:17:11 PM »

Well I beter get my caboose in gear and give it a go so we can find out got a bunch of maple riser blocks from Kenny today so beter start carving thanks for the info fellas !

Crooked Stic · « **Reply #10 on:** June 01, 2019, 04:46:31 PM »

I say Kenny is pretty close. Toy Choo Choo enginneer in Pink chaps

kennym · « **Reply #11 on:** June 01, 2019, 05:17:43 PM »

Quote from: Crooked Stic on June 01, 2019, 04:46:31 PM

I say Kenny is pretty close. Toy Choo Choo enginneer in Pink chaps

LOL

Roy from Pa · « **Reply #12 on:** June 01, 2019, 06:15:42 PM »

Flem · « **Reply #13 on:** June 01, 2019, 07:39:44 PM »

What are you working on Ritchie?

Forwardhandle · « **Reply #14 on:** June 01, 2019, 08:00:58 PM »

Flem · « **Reply #15 on:** June 01, 2019, 08:40:08 PM »

Thanks a lot, now I got that song stuck in my head

Forwardhandle · « **Reply #16 on:** June 01, 2019, 08:44:19 PM »

Lol sorry Bro ,I'm making a 58" FHLB ,in Kenny's FDC at 58" it was just starting to stack at 31" so I'm decreasing the riser to 13" I was thinking 12" but no room for the sight window ,at 13" it will be shorter but serviceable !

Flem · « **Reply #17 on:** June 01, 2019, 10:42:15 PM »

Your going to have to name it Dinah.

Roy from Pa · « **Reply #18 on:** June 02, 2019, 06:24:53 AM »

Ritchie....

Ah never mind.

LOL

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Author Topic: Riser length vs Draw weight ? (Read 2217 times)

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