Author Topic: Propeller tip help request  (Read 2813 times)

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Offline Mesophilic

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Propeller tip help request
« on: August 26, 2020, 02:44:16 pm »
I've got a bit of propeller twist on one tip of this bow I'm working on.  I get confused on which side is strong vs weak.

This is 52" sinew backed with slightly flipped static tips.

Please disregard the the marks from the bandage wrap in the sinew, not trying for BOM contest.  There's a whole chapter in Mesophillic's book on How Not to Make a Bow that covers why I'm stuck with this method for now  ;D

Anyway, what do you guys think?   To straighten out this limb tip a little,  should I remove material from the A side or the B side of the belly?



Trying is the first step to failure
-Homer Simpson-

Offline Mesophilic

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Re: Propeller tip help request
« Reply #1 on: August 26, 2020, 02:49:48 pm »
Trying is the first step to failure
-Homer Simpson-

Offline Pat B

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Re: Propeller tip help request
« Reply #2 on: August 26, 2020, 03:22:03 pm »
Wait and see how it looks braced. You may not have to do anything. A little twist isn't necessarily a bad thing in a selfbow or sinew backed bow.  Once braced you can see how the string tracks and adjust accordingly.
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Mesophilic

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Re: Propeller tip help request
« Reply #3 on: August 26, 2020, 03:42:38 pm »
Wait and see how it looks braced. You may not have to do anything. A little twist isn't necessarily a bad thing in a selfbow or sinew backed bow.  Once braced you can see how the string tracks and adjust accordingly.

These pics are braced.

Didn't even realize it but my string is the exact same color as the arrows I drew to show the twist. (R

The tips aren't highly reflexed so I don't think the twist will affect it too much, but I still need to drop about 10 pounds off the draw weight, so I figure maybe I could take some twist out while I'm at it.
Trying is the first step to failure
-Homer Simpson-

Offline DC

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Re: Propeller tip help request
« Reply #4 on: August 26, 2020, 04:55:51 pm »
What twist?? :D :D :D

Offline Rākau

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Re: Propeller tip help request
« Reply #5 on: August 26, 2020, 05:01:41 pm »
looks straight enough to me haha, I get concerned if I have a bow that doesn't have at least that much prop twist  :BB

Offline Pat B

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Re: Propeller tip help request
« Reply #6 on: August 26, 2020, 05:25:49 pm »
You could reduce the "A" side a little at that hump to straighten it out but other than that I wouldn't mess with it. If the tiller is good at full draw take long even scrapes from each limb to reduce the weight without affecting the tiller.
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Mesophilic

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Re: Propeller tip help request
« Reply #7 on: August 26, 2020, 07:37:39 pm »
Thanks guys. 
Trying is the first step to failure
-Homer Simpson-

Offline George Tsoukalas

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Re: Propeller tip help request
« Reply #8 on: August 26, 2020, 10:05:08 pm »
I'd leave it. Doesn't look like much to me. Jawge
Set Happens!
If you ain't breakin' you ain't makin!

Offline Hamish

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Re: Propeller tip help request
« Reply #9 on: August 27, 2020, 01:52:08 am »
+1 what Jawge said.

Offline bradsmith2010

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Re: Propeller tip help request
« Reply #10 on: August 27, 2020, 04:05:30 am »
well I think you got good advice,,a little off the A side would make it look lined up a bit,, but dont think is necessary as others have stated,,

Offline Eric Krewson

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Re: Propeller tip help request
« Reply #11 on: August 27, 2020, 06:54:04 am »
A heat gun tweak would take care of it in minutes.

Offline Mesophilic

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Re: Propeller tip help request
« Reply #12 on: August 27, 2020, 09:11:31 am »
A heat gun tweak would take care of it in minutes.

Oh no, this would be asking for a whole new chapter in my previously mentioned book on How Not to Make a Bow  :D 

I have to swear off of electricity at a certain point in the bow making process or I end up screwing things up.  Partially from anger management issues  :-K )-w( :-T

Thanks again, guys.  After all the work and waiting through the dry time for the sinew,  I can sleep better now.
Trying is the first step to failure
-Homer Simpson-

Offline Pat B

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Re: Propeller tip help request
« Reply #13 on: August 27, 2020, 01:11:09 pm »
How does it shoot?
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Mesophilic

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Re: Propeller tip help request
« Reply #14 on: August 27, 2020, 03:14:32 pm »
How does it shoot?

Haven't tried yet, and may not get much chance.

I've got two chrysals starting on the side, a couple of inches out of the fade on one limb.   Doesn't surprise me, this wood is only 3 to 4% moisure content per my moisture meter (and that's with being stored indoors with a swamp cooler running!!!) 

Wood is very unforgiving here. 
Trying is the first step to failure
-Homer Simpson-