fixing a riser

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flyne
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fixing a riser

#1 Post by flyne » Fri Aug 01, 2014 2:13 pm

Gday guys and girls I have a bit of a ishue with one of my black mountain sheep eater just after getting it the riser cracked now this bow was basically new only shot it a hand full of times so it was replaced under warranty only problem was that they had discontinued this model so they replaced it with a set of ilf limbs iv since brought anouther sheepeater but it is lighter weight and I prefer a higher draw so what im after is some one that has the tools and skills to remove a triangle of wood and replace it with some phonolic I have.
in the pic the red line is the crack and the blue triangle is the section I want removed.
So if you think you could do this for me please let me know im happy to pay to have it done I would have tryed it my self but I have no skills in this sort of thing and no tools and I dont want to stuff it up as I know I would lol
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rodlonq
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Re: fixing a riser

#2 Post by rodlonq » Fri Aug 01, 2014 2:48 pm

Flyne,

The broken riser is a real bummer.

It would be difficult to make sure the sides of the triangle remain square, difficult to prepare the cut surfaces for gluing and also difficult to make a close matching replacement part. That applies to me an my equipment, perhaps one of the bowyers on here have a solution for you.

What about boring a hole right through it and replacing the removed material with a turned cylindrical plug of phenolic or hardwood.
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I would also grind off the riser overlay and replace it with a couple of layers of Botuff and reshape. This could even be done before boring the hole to help it all stay in shape.

Cheers.... Rod

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bigbob
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Re: fixing a riser

#3 Post by bigbob » Fri Aug 01, 2014 3:27 pm

I think given the location, and manner of the problem Rod's idea has a lot of merit, applying a plug, and re doing the overlays would repair the problem area and the new overlays would add bracing to the area.To remove a wedge shape would make it very difficult with alignment issues etc.
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flyne
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Re: fixing a riser

#4 Post by flyne » Fri Aug 01, 2014 9:19 pm

I did think of doing the plug treatment the only reason I went with the triangle was that it would have more glue surface but im happy to go with what ever would work if someone is willing to give it a try I have 2 blocks of the phonolic tge same size if any one has any other idears that would require more
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longbow steve
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Re: fixing a riser

#5 Post by longbow steve » Sat Aug 02, 2014 8:40 am

Hi Jim, seems to be a weird crack. Not following the grain or at a join. Do you have a better picture? Does it go right the way through the riser? It may just be a flaw/drying crack that didn't become apparent until after finishing and if that is the case it could well be sound as is. Cheers Steve

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flyne
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Re: fixing a riser

#6 Post by flyne » Sat Aug 02, 2014 9:05 am

The crack dosent go right threw but it dose open up more once strung and you can see evedence at the overlays of the riser flexing more then it should il try and il try and grt some more pics later today
Jim
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rodlonq
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Re: fixing a riser

#7 Post by rodlonq » Sat Aug 02, 2014 11:26 am

Flyne,

The more I think about it the simpler it gets, in my mind at least. I would grind off the overlays, fill the crack with thin superglue and clamp it shut for curing. Then put on a beefy new riser overlay with at least two layers of Botuff. The riser overlay alone should do it, but the superglue in the crack would be an advantage and seal it up cosmetically.

Cheers... Rod

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Stickbow Hunter
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Re: fixing a riser

#8 Post by Stickbow Hunter » Sat Aug 02, 2014 11:31 am

rodlonq wrote:Flyne,

The more I think about it the simpler it gets, in my mind at least. I would grind off the overlays, fill the crack with thin superglue and clamp it shut for curing. Then put on a beefy new riser overlay with at least two layers of Botuff. The riser overlay alone should do it, but the superglue in the crack would be an advantage and seal it up cosmetically.

Cheers... Rod
From looking at the photos and your description flyne I would agree with what Rod says above.

Jeff

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flyne
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Re: fixing a riser

#9 Post by flyne » Sat Aug 02, 2014 11:38 am

Hears some more pics and the bows 65@28 and I draw 29" so 68#@ my draw
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flyne
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Re: fixing a riser

#10 Post by flyne » Sun Aug 03, 2014 10:48 am

So dose any one what to have a crack at fixing it for me
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flyne
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Re: fixing a riser

#11 Post by flyne » Mon Oct 27, 2014 8:20 pm

Ttt
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Re: fixing a riser

#12 Post by greybeard » Tue Oct 28, 2014 6:53 pm

Trying to repair cracked/split risers can involve extra remedial work. You could spend a lot of dollars and still end up with a non functional bow.

Generally bowyers are reluctant to work on another bowyers product.

Did you notify the manufacturer about the split in the riser?

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flyne
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Re: fixing a riser

#13 Post by flyne » Mon Nov 03, 2014 8:14 pm

Yer Daryl I let them know and they are no longer making this model wich is a shame becouse its the best short bow iv ever owned and I have another but the draw is lighter and I cant shoot it as well
Jim
good judgement comes from experience and experience comes from poor judgement
Nothing is easy. That's why it's called hunting, and not killing

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