Riser Clearance Issue

[PorlyP]

HI All,

I'm thinking about what could cause my slight clearance issues on my riser at the moment.

Basically, when I've shot a few arrows, I begin to see marks below the rest, on the flat surface of the riser, caused by the fletchings.

Now, does this mean that my nocking point is actually too high? Or is it that my string has got less twists in it?

If either can be the cause, that's also fine, as I'll need to check it all out this weekend. I have a feeling that I've lost some twists somewhere.

[Jimster71]

Have you changed anything recently?

[SVL]

Had this problem recently and it was because the arrows where not the correct spine for the bow. So I would start by checking spine.

[King Custard]

If until recently everything was just fine......
I'd visually check out 3 things before changing anything mechanically....

Check limbs for signs of wear damage cracks and the like.
Check string for similar.
and mostly - get a video of your form as you shoot..a poor release plucking or lifting on the release can produce these marks on a bow with little clearance.

Then start with checking your fletchings are at 120 degrees and that your nocks are turned to allow best clearance - that theyve not twisted.

...and then that arrow rest hasnt changed position so the arrow no longer slides along it centrally.

If you've changed anything recently - well ...you could put it back as it was.

[PorlyP]

Originally Posted by King Custard

If until recently everything was just fine......
I'd visually check out 3 things before changing anything mechanically....

Check limbs for signs of wear damage cracks and the like.
Check string for similar.
and mostly - get a video of your form as you shoot..a poor release plucking or lifting on the release can produce these marks on a bow with little clearance.

Then start with checking your fletchings are at 120 degrees and that your nocks are turned to allow best clearance - that theyve not twisted.

...and then that arrow rest hasnt changed position so the arrow no longer slides along it centrally.

If you've changed anything recently - well ...you could put it back as it was.

My kit's in perfect nick, I look after it too well, some people say!

I've not changed anything of late, although when putting my bow up a month ofr two ago, I dropped my string and it probably lost some twists, so I thought it might have been that, or at least stemmed from there.

My Arrow rest is still a crappy stick on one, but it hasn't moved at all yet.

I looked at the nocks to see if they were in line with the #### fletch, and those that weren't were straightened, so perhaps that's it, I need to un-straighten them slightly!

I'll take a look at it all this weekend, cheers King!

[gjb]

check your centre shot alignment.
with an arrow nocked look down the bow with the string aligned to the center of the riser and limbs, the very tip of the arrow should be just left of the string (for a right handed archer). this will also show if the limbs are correctly aligned.
to correct adjust the button in or out.

[JohnK]

A lower bracing height would tend to give slightly poorer clearance, but I think it would only be significant if your arrows weren't that good a match to your bow to begin with.

I take it you know what your bracing height was - why not just check it again? You should do this every time you assemble your bow.

[PorlyP]

Originally Posted by gjb

check your centre shot alignment.
with an arrow nocked look down the bow with the string aligned to the center of the riser and limbs, the very tip of the arrow should be just left of the string (for a right handed archer). this will also show if the limbs are correctly aligned.
to correct adjust the button in or out.

The centre shot's fine, I had my local shop verifiy it was ok a while ago, so I know it's nothing to do with that.

Cheers for the suggestion though!

[hooktonboy]

Do you ever lose a fletching completely? - I wonder if the nocking point is not ideal - could be too high forcing the tail of the arrows down into the riser - in an extreme case or occasional bad release this could take the bottom fletching straight off.

What kind of fletchings do you use?

[Kae]

Your best bet is to check everything over. If this has only just recently started to happen then something has either moved, broken, or become loose.

Obvious options are partially untwisted string (which would also effect bracing height & nock height) or arrow rest has moved.

Check everything over is always your best bet.

Kae.