Primitive Archer

Main Discussion Area => Bows => Topic started by: Frode on July 02, 2010, 10:56:11 pm

Title: tiller changing over time?
Post by: Frode on July 02, 2010, 10:56:11 pm

Hi all,
A while back I finished up a hickory sapwood pyramid (http://www.primitivearcher.com/smf/index.php/topic,19566.0.html (http://www.primitivearcher.com/smf/index.php/topic,19566.0.html)), and while it still shoots smooth and fast, I've just noticed that one limb is bending a little bit more (an inch or so) than the other.  Evenly, no hinging or anything like that, just a bit more bend.  It also seems to have picked up about an inch more set over all than when it was new, still not bad though.  It gets shot about two hours at a time, once or twice a week, kept inside in the AC at about 72 F.
It seems as if I've read somewhere here that bows can change tiller with time and environment, but so far I can't locate the thread... is this true, and what, if anything, should be done about it?
Thanks,
Frode

Title: Re: tiller changing over time?
Post by: ken75 on July 02, 2010, 11:05:25 pm

frode i've seen a few bows change a little bit usually will be the bottom limb, in that case i flip the bow moving the stronger limb to the bottom , most of the time touch up tiller can be done with a knife scraper and sandpaper. just curious wich limb seems to be the weaker

Title: Re: tiller changing over time?
Post by: Frode on July 03, 2010, 12:04:10 am

Heh!  Had to think about that one, Ken.  The bow is symmetrical, I never got around to putting an arrow rest on it, and I do occasionally flip it over, but the weaker limb, in this case, is the bottom one.
Frode

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Title: Re: tiller changing over time?
Post by: ken75 on July 03, 2010, 11:23:19 am

if it was me i would keep strong on bottom

Title: Re: tiller changing over time?
Post by: El Destructo on July 03, 2010, 11:28:32 am

Frode....lets see a full draw of it again....so We can see if anything Major is Happening here....otherwise I would be right there with Ken...and just don't put an Arrow Rest...and Flip it from time to time...

Title: Re: tiller changing over time?
Post by: Frode on July 03, 2010, 04:02:59 pm

OK, had to get a couple of pics... here it is full draw both sides up.
Frode

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Title: Re: tiller changing over time?
Post by: George Tsoukalas on July 04, 2010, 12:11:21 am

Don't worry about it. I do tiller the bottom limb a little stiffer to start. Jawge

Title: Re: tiller changing over time?
Post by: Eric Krewson on July 04, 2010, 10:17:44 am

When this happends to one of my bows I cut an inch off the weak limb(always the bottom) and I have the tiller back to where it needs to be.

Title: Re: tiller changing over time?
Post by: Frode on July 04, 2010, 03:44:26 pm

Thanks everyone!
Frode