I'm so confused...
 

Since I purchased my Diamond Hornet, I have been under the understanding that it was set at a 28" draw. My wingspan measurement says I should shoot 27.5", which almost seemed right, as my bow "at 28" felt a little long, and I'm having to reach/push a little more than necessary with my bow arm...

My brother finally was laid off for a few weeks, so I stopped by his place today to have him take the actual measurement while I drew. Clipping the release directly to the string, 27.25" from nock valley to the narrow part of the grip. Adding 1.75" to this puts the bow at 29" draw, not the 28" I thought it was set at.

I'm getting ready to send it to Diamond for some tweaking, and would like to have them set the draw length as well. I'm thinking in light of this new info, I should have it set at 28.5", and if this is still a little long, I can twist it down to 28.25" or so. Same for if it's too short, but I doubt it...

Sound like a plan, or do you have another recommendation?

RE: I'm so confused...
 

As long as you're sending it in anyway just as well let them do it. If they're going to charge you for the new cam or module you just as well keep the current ones also so you can fit more draw lengths if you decide to sell the bow.

RE: I'm so confused...
 

Rangeball,

I am not familiar with the specific cam system on the Diamond Hornet but I think it is a single track idler wheel style single cam, right? Does it have separate modules for the different draw lengths?..or does it require a different sized cam?

If I am thinking clearly then isn't Diamond using the same type of cams that Bowtech uses? If that was the case and it uses a modular based draw length adjustment system then how would you plan on twisting the string to shorten the draw length and not have the cam timing affected?

RE: I'm so confused...
 

Diamond used/uses the Bowtech PF single cam, single track idler. Draw length is adjustable with modules, I'm hoping in 1/2" increments...

I plan to have them do the adjustment, just really wrestling with what draw length to have it set at... I wish Len or others had a shop around here...

RE: I'm so confused...
 

Range-

You need to determine your drawlength as close as possible, so they can set your drawlength at the factory when they have it there. You CAN tweak them slightly, but not alot or they'll be out of synch, so you'll have to be fairly close. Seeing as they're modular, and if you are not sure on your drawlength, I would opt for a couple of extra mods (shorter, longer) to have with it. Price is minimal. Good luck. Pinwheel 12

RE: I'm so confused...
 

Pinwheel, do you know if they mods are available in 1/2" increments for the bowtech PF single cam?

RE: I'm so confused...
 

I'm sure your brother is a great guy, but you should be able to get a measurement within a few inches without his help. Put a washer type thing, I like to use those drill bit split stop collars that are adjustible for tension, but it could be anything, a Malomar cookie for instance, on your arrow. When you draw it moves up the shaft and stays put when you let down. With that you should be able to get a measurement either from the back of the bow, or the rest position, and bingo you have a basis for your measurement.

When it comes to getting the factory to tinker with this measurement, it doesn't sound like either of your measured "true draws" are actualy equivalent to their marking on the bow, so be careful to comunicate what you want done, so that they don't give you the number you are requesting in terms of their own suspect measurements.

RE: I'm so confused...
 

Hadn't thought of that, Ossage, and I'm usually pretty on the ball with McGiver type solutions... :)

I'll give it a whirl a few times to see if I come up with similar measurements. And I agree. I plan to tell them to hit my #, not theirs...

RE: I'm so confused...
 

Range-

No, all Diamond post feed mods are available in 1" increments only. (sorry) Good shooting, Pinwheel 12

RE: I'm so confused...
 

I have never gone by the "wingspan" method for determining draw length.
Best thing to do is draw the bow back and find a good anchor. Let a pro or someone with experience look at your anchor and determine if it is correct. I have even looked in a mirror while at full draw before. It is very easy to think you have the correct draw length, but in reality it is too long. Corner of mouth and tip of nose is a good place to start for an anchor.

RE: I'm so confused...
 

So Pinwheel, based on this, should I just have them install the 28" mod, or ask them to tweak as much extra length outa the 28" as possible while still keeping the cam in time?

RE: I'm so confused...
 

Range-
Draw a straight line up from the deepest point of your grip, and make a mark on your shelf near the arrowrest.Take the bow, using your exact release, loop, whatever setup, and take a long arrow, hook up, and draw and anchor comfortably, without leaning back, or canting your head, you want to be in a perfect "T", yet comfy, also. Don't worry about the letoff if you are 1" long, just get it to where it feels comfy, with the string touching your nose and going to the corner of your mouth. Then have a friend/spouse mark the arrow shaft at full draw in the same spot as the mark on the shelf. Leave this mark on the shelf, and on the arrow for future reference. Let down, and measure from the inside of the nock, to the mark on the shaft, and ADD 1 3/4". (One inch, and three quarters) This will be your AMO drawlength. Tell the factory this is what you want your bow set at. Then, when you get the bow back, take the same arrow, same release, etc, and draw and anchor comfortably. The marks should line up, and you should be good to go.

The important factors are using the exact release, loop, and anything else you plan on using for the final setup when fitting your drawlength. Also, as stated, be very conscious about the "T" formation, and whether or not you are leaning or canting your head. Have your helper watch this for you. This will get you quite close to where you need to be without going to see a tech and having him fit you. Good luck, Pinwheel 12

Edited by - Pinwheel 12 on 03/05/2002 12:24:36

RE: I'm so confused...
 

Thanks a ton... Just need to find a full length arrow now... RB