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Need of a rehair?
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HP
Trondheim, Norway
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August 7, 2019 - 9:18 am
Member Since: October 11, 2012
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So far I've played about 400 hours on this set of hair and until today the hair has been as it's supposed to. The hair have rolled off to the side of the head, the other side is even worse than this, but I wasn't able to get a decent photo of it. Does this indicate that's about time to get a rehair? As far as I can tell it doesn't impact the playability of the bow. This is my good bow, so I don't want to play with it if it does harm to the bow. 

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'Armed with theory, practice becomes meaningful. Through practice, theory becomes fulfilled.' - Egon von Neindorff.

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Pete_Violin
Utah
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August 7, 2019 - 10:37 am
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@HP 

So I have read several pages on the internet regarding rehairing your bow.  Most of them list the common reasons... broken hairs, over-stretched hair, too tight hair, discoloration, bad odor from the hair.  I did not see any reference to what you are describing here with the hair moving off to the side, although there are some references to hairs breaking on one side because we do sometimes play using the bow on one side.

Having said that, I would probably have this checked.  Because of the amount of playing you have put in on this bow and looking at what is going on, it is probably worth your while to have it rehaired.  

As far as damage to the bow, the only thing I read about bow hair causing damage is when there is too much tension.  When this happens it is possible to cause the tip to snap.  If you believe your bow hairs are very tight or have more tension than normal you should get it rehaired to avoid damage to your bow.

- Pete -

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HP
Trondheim, Norway
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August 7, 2019 - 11:21 am
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@Pete_Violin I found similar reasons as you did. Some sites wrote about danger for warping of the bow because of uneven pressure, but I don't think that's as high risk on a carbon fiber bow as a wooden one. Maybe I'm wrong, but that's my guess. I find it odd, because both sides of the stick are doing the same thing, so it's like a arch. 

When I'm playing I don't put a lot of tension on my bow, and while I'm not playing the hair almost touch the stick at the deepest arch. So I don't really worry about tension. Guess I would have to talk to my luthier to see if I need to do something about it. Hopefully it's a easy fix and done quickly. My semester start again in a week, so I don't want to adapt back to my old bow at this point. 

'Armed with theory, practice becomes meaningful. Through practice, theory becomes fulfilled.' - Egon von Neindorff.

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Hermes
Athens, Greece
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August 7, 2019 - 6:35 pm
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There could be many causes, but I am thinking of some...(just my thoughts though)

1) Differences in humidity, temperature etc could have made the bow hair react differently, possibly affecting the outer ones, and they appear less tight than the others

2) Maybe they somehow somewhere have started to loosen from their knots or something like this? (Maybe humidity and temperature changes could have caused this as well?)

3) Again, due to differences in humidity etc could they have stretched a lot and when you tightened the bow they got that way?

As you’ve said since it is not a wooden bow it could be more resistant to tension changes. However if there is any chance the whole situation could get worse, then your bow could behave in a different way than expected...So if the bow should be in good shape in a week, just to be sure I would go for a rehair 

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HP
Trondheim, Norway
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August 8, 2019 - 7:35 am
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Good news, no need for a rehair. Took my bow to the luthier today and she didn't think it was necessary. She did some maintenance work on my bow, tightening the frog, oiling it and grooming the hair. That by itself fixed the issue. My frog is buttery smooth now, I love it. Best of all she didn't charge me anything for it. 

'Armed with theory, practice becomes meaningful. Through practice, theory becomes fulfilled.' - Egon von Neindorff.

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BillyG
Brora, North-east Scotland
August 8, 2019 - 8:47 am
Member Since: March 22, 2014
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Great !  thumbs-up

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Please make your own, different mistakes, and help us all learn :-)

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