Drilling the AMB-IMMORTAL

Black Pearl & Yellow/Black Solid

Find the "Virtual Mass Bias"

To Layout the AMB-IMMORTAL properly, you must first mark the "Virtual Mass Bias" by drawing a line from the 1/4" locator pin on the backside around the ball, through the 1/2" Flip Pin (white pin on the AMB-IMMORTAL Pearl). Mark an "x"180 degrees from the AMB pin (exact opposite side of the ball) 13 1/2" from the AMB pin which puts the "x" 6 3/4" from the flip pin. This Virtual Mass Bias point can then be treated using the same general rules that apply to other typical mass bias spots.

Flip Pin Location

 

 "Virtual" Mass Bias Location

VARIOUS LAYOUTS
 
Pin A - Most Length, with little or no flare - (Pin located 5.5" plus from PAP)

MB 1 - long and then arc
MB 2 - little quicker recovery than #1
MB 3 - long, strong - quick rev at breakpoint
MB 4 - good length, earlier break than 1-3
MB 5 - earliest breakpoint possible with Pin A (possible hook/set)

 
Pin B - Above Average Length, 2-3" flare - (Pin located 4-5" from PAP)

MB 1 - long and then arc
MB 2 - little quicker recovery than #1
MB 3 - strong - quick rev at breakpoint
MB 4 - earliest possible with Pin B (fast recovery from oil to dry)

 
Pin C - Medium Length (less than B), 5-7" flare - (Pin located 3 3/8" from PAP)

MB 1 - good length, smooth continuous arc
MB 2 - good length, stronger break than #1
MB 3 - max break (may exaggerate over/under reactions)
MB 4 - rev leverage - length, quick recovery
.............(pin below fingers for max hook in oil)

 
Pin D - Less Length (less than C), 2-3" flare - (Pin located 1.5-2.5" from PAP)

MB 1 & MB 2 - early roll in midlane, arc reaction
MB 3 - midlane grab, with stronger break than 1 & 2

 
Pin E - Earliest Roll, with little or no flare - (Pin located on the PAP)

MB 1 - early, heavy roll - with tame backend

All layout information above is relative only to the same individual ball.

Layouts are general rules and will appear different with the varying PAP locations of each bowler. If necessary, place weight holes where needed to achieve the desired static weights- on the axis for a smooth break, 1.5-2.5" off axis for stronger break. Warning: do NOT put holes beyond the Vertical Axis Line - the extremely high flare produced by the AMB-IMMORTAL core may cause the track to hit the weight holes.

Surface Finish

The final step is to throw the ball and adjust the coverstock accordingly. The finish on the balls plays a major part in the reaction of the ball. The Black AMB-IMMORTAL Pearl is factory polished to around 1500. The IMMORTAL Solid is finished 1000 matte.  The Pearl is designed for medium to lighter conditions and is meant to go longer and flip on the back while the Solid is for Medium to heavier oil and will roll sooner with more of a hard arc when compared to the pearl.  If the balls are not reacting the way you want it to try the following:
  • Skidding too long & not finishing enough - dull the surface with sandpaper or scotchbrite to the desired grit. Try it in small steps because it may not take much change to see a big difference - results in earlier grab and more overall hook (too dull may cause the ball to roll too soon and lose some of the back end reaction)
  • Hooking early & not enough snap - polish the ball to the desired finish using a polishing machine or polishing compound. Again, do it in moderate steps because it doesn't take much to see the difference. - results in more length and more snap (too high of gloss may cause the ball to go too long and not get into a roll soon enough)