Let off ???

[Jerry Tee]

Hi Zander, sorry about the delay in getting back to you but the mother board and CPU blew.Adam is correct, However there are exceptions as you can see if you look at my avatar I do not shoot a cam on the end of the limb compound.There are slight differences with an Oneida. I have adjustable draw stops on the riser of my bow that allow you to stop the cam at any position in the valley which for me is about 1/2 to 3/4 of an inch long.The bow also has a set of cam inserts which change the draw lenght by about an inch for each type of insert so I can vary the amount of draw lenght to get to the valley as well.This adjustability is one of the reasons I like this bow. I could if I wanted to change to release aid , change the draw lenght of the bow so that on my draw lenght (29 inches) I could just get into the valley and then set the cam stops at that point. this would give me a small valley with a quick ramp up in poundage which would increase arrow speed. In fact I wonder how many manufactures do this to get the highest IBO rate speeds out of their bows?

[Zanda]

Hi Jerry, thanks for prompt reply, god what happened to a stick and a bit of string and another stick to shoot? lol, no my friend I dont want to go along the long bow route, just messing, I love my compound and wouldnt change it, no matter what, Just gathering different folks opinions on what makes the beast tick, and what I can do to make my beast tick the best way for me and it....cheers, keep in touch

[Rik]

Originally Posted by Jerry Tee

This would give me a small valley with a quick ramp up in poundage which would increase arrow speed. In fact I wonder how many manufactures do this to get the highest IBO rate speeds out of their bows?

I'm not quite sure what you mean by that. Decreasing the length of the valley (on it's own) won't increase arrow speed. And you can pull as hard as you like against a set of stops without adding to the energy you put into a shaft. Hell, put a ton of weight in there - it won't have any effect unless the string moves at that weight.

You can increase speed by increasing the length of time the peak weight operates for (think "hard cam"...), which quite often leads to a narrow valley, but that's not the same thing at all.

[geoffretired]

Rik,
The Oneida that Jerry is talking about is one of the most adjustable compounds on the market. I mean adjustable, too: not just weight and draw length. What happens is , you can change the profile of the cams and alter the draw length and, more importantly, the draw force curve. With the draw stop adjustment it is possible to use just the first part of a long draw, the part where the peak weight is being generated. In effect , you can choose to cut off much of the let off section.
All the best
Geoff

[Rik]

Ahhh. I wish most compounds worked like that

I've often admired the inventiveness of the Oneida bows. I particularly liked the idea of the "compound without wheels" (though I'm not sure if that should be called an Oneida anymore, given the legal kerfuffle).

Originally Posted by geoffretired

Rik,
The Oneida that Jerry is talking about is one of the most adjustable compounds on the market. I mean adjustable, too: not just weight and draw length. What happens is , you can change the profile of the cams and alter the draw length and, more importantly, the draw force curve. With the draw stop adjustment it is possible to use just the first part of a long draw, the part where the peak weight is being generated. In effect , you can choose to cut off much of the let off section.
All the best
Geoff

Is this bow competitive? I have seen one once. I likes the differentness about it. I like things that rub aganst the grain, how much do they go for in teh USA?

[Jerry Tee]

Oneida bows are mostly used by hunters but in the hands of a good archer they are as good as any of the big names. Log on to www.oneidaeaglebows.com and have a look visit the forum.

[Shirt]

The German outdoor championships was won a fair few years ago by a guy shooting one. Jon Mynott shot one for a while, as well...

[Li'l Boy Blue]

Originally Posted by Rik

I'm not quite sure what you mean by that. Decreasing the length of the valley (on it's own) won't increase arrow speed. And you can pull as hard as you like against a set of stops without adding to the energy you put into a shaft. Hell, put a ton of weight in there - it won't have any effect unless the string moves at that weight.

You can increase speed by increasing the length of time the peak weight operates for (think "hard cam"...), which quite often leads to a narrow valley, but that's not the same thing at all.

Rik, Decreasing the length of the valley will increase the speed in the same way that lowering the let off will. By having a shorter valley or a lower let off, you increase the initial accelaration of the string, which in turn affects the energy pumped into the arrow and hence the speed.
It's like you being sat stationary at a set of traffic lights, the bloke next to you in exactly the same car that's still doing 5 mph when the lights change is always gonna beat you cos the initial accelaration is faster for him.

[Rik]

Originally Posted by Li'l Boy Blue

Rik, Decreasing the length of the valley will increase the speed in the same way that lowering the let off will. By having a shorter valley or a lower let off, you increase the initial accelaration of the string, which in turn affects the energy pumped into the arrow and hence the speed.
It's like you being sat stationary at a set of traffic lights, the bloke next to you in exactly the same car that's still doing 5 mph when the lights change is always gonna beat you cos the initial accelaration is faster for him.

That's true, if you're talking about decreasing the valley, by increasing the length of the peak... but then that's a no-brainer. But what you're talking about there is a drawlength change, on most bows, though I guess if you have an adjustable draw stop as well, you could end up with the same draw length and a shorter valley...

How easy is it to fiddle with the draw-force curve on most compounds?
I know I've seen a few tricks for doing it; there's the large scale stuff, with cam modules and pegs on the cams, and the smaller scale stuff, with string/cable length adjustments, and I have some vague memory of cam-and-a-half letting you do some weird stuff, but I've not seen anything that was really very customisable...