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desertcj
07-14-2013, 08:28 PM
So if I want a 60lb-63lb pull on my Prowler with Fury XT cam, what deflection Barnsdale limbs do I need? If anybody can help me, that would be great! I'm thinking 135, but that's basically a guess...

Spiker
07-15-2013, 07:10 AM
What deflection are the limbs on it now and what is the max draw weight?

desertcj
07-15-2013, 08:47 AM
They are "70lb" limbs. I don't know what deflection they are? The number is not on them. There is a number on the inside of the limbs near the limb bolts, but they didn't seem to mean anything to me. 92012 I think....my bow is not in front of me

Dale817
07-15-2013, 10:12 AM
I think your best bet would be to call Barnsdale,their # is on their website.barnsdalearchery.com

desertcj
07-15-2013, 11:14 AM
I will call Barnsdale if I have to. I don't want to come off the wrong way, but isn't this the "Martin Archery tech forum"? Why can't anybody from Martin tell me what deflection limbs I have? Is there nobody from Martin on this forum anymore? I guess I will try to call Martin tech support...

Spiker
07-15-2013, 11:37 AM
The deflection code may just be where you can't see it without backing the bolts out.

bfisher
07-15-2013, 03:35 PM
I will call Barnsdale if I have to. I don't want to come off the wrong way, but isn't this the "Martin Archery tech forum"? Why can't anybody from Martin tell me what deflection limbs I have? Is there nobody from Martin on this forum anymore? I guess I will try to call Martin tech support...

This forum is not manned by Martin technical experts or even Martin employees. We are all Martin users and enthusiasts and as such we are not experts on everything Martin. If you call Martin you might ask to speak to one of the bow technician or builders. They were the ones building the bows and should be able to know which limbs do what on certain bows.

The number you are seeing on your limbs is the date of manufacture 9/20/12. If they are Barnedale limbs there will also be a deflection number such as B (Barnesdale) 195 or B175 or something like that. Possibly B135 limbs for your bow. and it is embossed into the limb, not written with any kind of marker.

I talked with Dave Barnesdale a couple years ago about just this issue. At the time he could not tell me what the deflection codes were because he didn't have equipment to measure them at that time, but had new equipment ordered to do so. Here's what I got out of the conversation. He builds limbs and machines them to certain thickness. Then they are suspended at two points and a 45# weight applied to the center of the limb. Then the deflection (bend) is measured in thousandths of an inch (similar to the process used for checking arrow spine). At that time his equipment was not capable of measuring limbs less than 14" long. There are a lot of bows today with short limbs (less than 14"), thus the need for newer equipment. I would have to assume he now has that equipment so should be able to answer your question or at least give an educated guess.

desertcj
07-15-2013, 03:52 PM
I called the tech number and got an answering machine. I chose not to leave a message...maybe I should have. I guess I assumed that Martin would have some tech support on this forum since they direct you here from their website and I assume it is hosted on their website as well. Oh well, whatever....I guess I will call Barnsdale and see if they can point me in the right direction.

I wasn't going to bring it up at first, but in case anyone is wondering....the "Limb Issue" is not resolved on late 2012 bows as far as I'm concerned. I don't have a huge issue yet, but I do have a splinter on the corner of my lower limb. I don't want it warrantied, because I don't want a set of limbs that are going to do the same thing in 3 months...

kylecurtis04
07-15-2013, 05:08 PM
is this the same bow you have listed in the classifieds?

desertcj
07-15-2013, 05:27 PM
The limbs say 3HP if that helps any....

Yes, I am trying to replace the limbs obviously.....

hawkdriver55
07-16-2013, 08:50 PM
I am wanting to get a set of Barnsdale limbs as well. The problem you will run into is that Barnsdale doesn't know the spec codes for Martin and Martin doesn't know the specs codes for Barndale. I spoke with a guy in South Africa that is trying to get a set of limbs for his cougar. The best bet is going to be working with Barnsdale one on one. I have an email into Barnsdale asking about limbs for my cougar. Iam sure I will have to send the bow to Barnsdale to get it done. I am looking at getting the Barnsdale set installed and keeping the Martin set as insurance.

desertcj
07-16-2013, 09:32 PM
I also sent an e-mail to Barnsdale. Didn't Martin use Barnsdale limbs on the Rytera bows for a while? I find it very hard to believe that they don't know what deflection limbs to use. I believe it's more along the lines of denying that a problem exists so why would anybody need aftermarket limbs. Maybe I'm wrong...I don't really care. I just want a bow I can shoot and take hunting without having to worry. FWIW, I epoxied the splinter back down and I was shooting my bow this evening. So far so good, although I can still see the crack. I'm not holding my breath and I plan to get the Barnsdale limbs as soon as I can. If my current limbs get worse or when deer season is over in Nov.

Spiker
07-16-2013, 10:18 PM
1m would be about 60# and 1m is about the same as the 135's.

desertcj
07-17-2013, 06:33 AM
1m would be about 60# and 1m is about the same as the 135's.

Fantastic! Thank you very much!

bfisher
07-17-2013, 07:02 AM
The limbs say 3HP if that helps any....

Yes, I am trying to replace the limbs obviously.....

FYI the 2HP means that they are Martin Power Tuff limbs and not Barnesdale limbs. The Rytera line used mostly Barnedale limbs during 2009 and part of 2010 due to problems with their previous laminated limbs. The older laminated limbs were good enough for the cams up till the time the Cat (Hybrid) cam appeared. Then they just wouldn't handle the extra stress. So while Martin was figuring out the problem and designing the Power Tuff limbs they used Barnesdale on the Rytera line. They may still have a few in stock, but I doubt it. And as you may know it would seem that the info on which deflection does what on each bow doesn't get passed around too much. I remember asking Joel about it one time and even he didn't know and if he doesn't know I have no idea who would. You would think that there would be data sheets somewhere for reference.

desertcj
07-17-2013, 10:35 AM
1m would be about 60# and 1m is about the same as the 135's.

So just for reference....that would make the 115's close to 70#?

DeanRM
07-17-2013, 01:20 PM
It is difficult to tell without trying them. The ATA and sinigle-cam are what make it hard to compare to other bows. Let's see what we know and try to figure this out!

You stated that 3HP = 70# on your bow. So you would be looking for an equivlalant to 1HP = 60# on your bow.

I know that my 70# Onza uses 4HP, which should be close to a 70# Nemesis, which uses 115. This is the assumption that is tough as I do not know if the limb pocket angles are the same!

So, to step down from there in 5# increments:

4HP = 115 (75# on your bow)
3HP = 125 (70# on your bow)
2HP = 135 (65# on your bow)
1HP = 145 (60# on your bow)
0HP = 155 (55# on your bow)

No gaurntees...take it for what it is worth...good luck!!!

Spiker
07-17-2013, 01:54 PM
Alien X and Nemesis used same deflection limbs.
115 - 135 - 155 for 70,60,50 draw weights.
AZ used 135 - 155 - 175 to achieve the same.
Depends on the bow model/cams...

DeanRM
07-17-2013, 02:21 PM
I wonder if you could send your limbs to David Barnesdale, have him measure the deflection and tell him that you want new limbs with approximately 10# less draw weight?

desertcj
07-17-2013, 03:18 PM
Sounds like my options are 135 or 155 with 135 being a safer bet. I can always leave the limb bolts backed out a bit...

themiddleman
07-17-2013, 03:55 PM
I have two rytera alien x the axle to axle is 32 inches with a 7 inch brace height. The 70 pound alien X limb deflection number is 115 my 60 pound alien x limb deflection number is 135.
Hope this helps. Pat