A friend just bought a new firecat ,I`m trying to get some tech support.I callled martin direct, absolutly horrible tech service.I`m just trying to find some info on simple module numbers or letters for draw lenght settings,and questions about draw stops.It looks to me like the shop has the dl wrong,the cams are under rotated,hitting the stop to soon,etc..any help would be great...
Like elk4me says...
26" DL is hole #1 on both cams
26.5" is #2 on both cams
27" is #3 on both cams
27.5" is #4 on both cams
28" is #5 on both cams
28.5" is #6 on both cams
29" is #7 on both cams
Step 1:
Loosen the draw stop so the stop is free to slide.
Step 2:
Pick a hole in the module for a draw length to start.
Let's say we choose Hole #3.
Make sure the screw is in Hole #3 on the top cam.
Make sure the screw is in Hole #3 on the bottom cam.
(this is just an example. Pick whatever hole you like....just make sure you selec the SAME hole for the top cam AND the bottom cam)
Step 3:
Drop the draw weight down say 4 turns from MAXIMUM,
just so it's easier to feel when the cables hit the FLAT part of the draw length modules.
Step 4:
Draw the bow until you FEEL the cables hit the flat part of both modules.
Evaluate if the draw length is about right,
and if the draw length is NOT about right,
then select a different hole for the screw.
Move the screw to the new hole in the draw length module
and then make sure you are in the SAME hole for both modules.
Step 5:
Now we are going to position the draw stop.
The position of the draw stop determines our holding weight.
This is the bottom cam.
The draw stop is essentially a metal tube,
with a plastic cover.
Take off the plastic cover for now,
because we will be making lots of VERY SMALL adjustments
in the draw stop position.
This picture shows the draw stop about in the middle of the slot.
This picture shows the draw stop closer to the "pointy" part of the cam.
I cannot tell you the "correct" position for the draw stop,
because this depends on how much holding weight you want.
Just experiment with the draw stop position.
If you move the draw stop too close to the pointy part
of the cam,
then the holding weight is going to be EXTREMELY HIGH,
as in VERY VERY HARD to HOLD, as in a LOT OF WEIGHT at full draw.
If the HOLDING WEIGHT is HUGE,
then the draw length modules may not be touching the cables.
That's ok.
That's the purpose of the draw stop,
so you can custom set the holding weight.
Now,
clearly, the holding weight is WAY TOO MUCH.
Ok.
So, move the draw stop away from the pointy end of the cam,
a tiny bit, say 1/4-inch.
Draw the bow to full draw.
Holding weight is still WAY TOO MUCH,
but the holding weight is a bit less.
You get the idea.
Move the draw stop a little further back, AWAY from the pointy end of the cam. This time, move the draw stop only 1/8th inch.
Ok.
How's the holding weight now?
Holding weight is a little less,
but now you are getting close to where you want to be.
You get the idea.
Now,
we move the draw stop a tiny tiny skosh,
maybe we move the draw stop only 1/16th inch.
Draw the bow to full draw.
How is the holding weight, now?
Now, we are getting really close to the perfect holding weight.
Ok.
Now, we move the draw stop maybe 1/32nd inch away from the pointy end of the bottom cam.
How is the holding weight now?
Is it PERFECT for you?
Ok.
Holding weight is now ABSOLUTELY PERFECT.
OOOOOOPs.
Hold on now.
Measure the draw length.
OOOOOOPs.
The draw length is now 1/4-inch too LOOOOONG.
What do we do now????????
Break out the portable bow press.
Press the bow,
and relax the bow limbs and the bowstring.
Take off the TOP bowstring end loop.
Add say 5 complete 360 degree twists to the TOP bowstring end loop.
Put the TOP bowstring end loop back onto the peg.
Take off the BOTTOM bowstring end loop.
Add say 5 complete 360 degree twists to the BOTTOM bowstring end loop.
Put the BOTTOM bowstring end loop back on the peg.
Keep doing this (adding the same twists to both ends of the bowstring)
until you get your PERFECT bow Draw Length Setting.