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Author Topic: Dark Thunder Pearl  (Read 5561 times)


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Dark Thunder Pearl
« on: December 31, 1969, 06:00:00 PM »
Ball NPS Score: Not Available has the largest selection of bowling balls
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Coverstock Monsoon Pearl Reactive

Weight Block Multi- Density with FE2 Technology

Ball Color Black/Silver
Ball Finish 1500-grit Polish
Logos Dark Thunder , Storm, Eye of the Storm
Radius of Gyration 2.55 (Med)
Differential .058 (High)
Durometer 73-75 Rex D-scale
Flare 5 Plus (High)



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Re: Dark Thunder Pearl
« Reply #1 on: April 24, 2008, 03:59:00 AM »
The ball: 15-lb., 2-inch pin, 3.5-oz top before drilling.
The drill: Pin under ring, CG stacked below, works out to a 4x4 drilling for me. Box finish.
Me: PAP 4 over 3/8 up, tweener, good speed, good circumference coverage


Bought this ball off eBay at a good price. I was impressed with the Dark Thunder solid and wanted the pearl to complement its more oil-friendly brother.

I'm not a big fan of pin-down drillings but I haven't done one in a while and the short pin on this ball made it mandatory. I was pleasantly surprised by how it worked out.

The ball has easy length through the front. I was expecting a mild reaction in the back, as I had heard this was a fairly weak piece from Storm because of the core/cover combo (Thunder Road core with Monsoon Pearl, last seen on the XXX Factor).

That was not what I got, however. On a fresh THS, this ball revved up very quickly and got pretty angular in the backend even with a drill that allegedly promotes more of an arc shape. Had I been able to drill this ball pin-up, I almost shudder to think of how angular it could have been.

Carry was good, nothing special -- not a shock given this ball is older technology. Surprisingly, however, I found I was able to play in the oil with this ball more than I expected. Perhaps I shouldn't have been surprised, as Storm's pearls are more oil-friendly than most. But carrydown is another story.

A note to those who don't know: The Dark Thunder series is a contract pour from Storm, done at the request of, I believe, Cal Bowling Supply. Therefore, supplies are very limited. Most will never see this ball unless they request it or find it online.


Positives: More versatile than you might think, proven technology, helps create entry angle, good-looking black/gray pearl coverstock.

Negatives: Some corner leaves on good hits, somewhat allergic to carrydown, can't find the da*n thing anywhere anymore.

Overall, this ball should have been released to the general public through Storm. I have both Dark Thunders and both Thunderstruck series balls and this one may be the best pure performer of the bunch. The ball is very similar to the Thunderstruck Pearl, however, so if you have that ball you might find the DTP to be too similar.



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Re: Dark Thunder Pearl
« Reply #2 on: May 27, 2008, 04:53:17 PM »
Yes I personally own the ball and use it a lot.
Ball was made by Storm from CA Bowling distributor.
There are Pro Shops that can order these still.
Mine has a two to three pin no mass bias marking on ball.
T-Road weight block gets the ball down the lane.
Ball will stay online very well on sport patterns and is very consistent for a pearl the 39 ft top hat ball is very forgiving to the right. Im right handed tweener. Doesn't like the Gush in the middle. If you tug it sets up and leaves flat tens.Lots of ball for little money.
Thank you Storm
im old

Mr Old School

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Re: Dark Thunder Pearl
« Reply #3 on: March 29, 2009, 04:25:20 AM »
Hello there again, I'm back with another review of the Dark Thunder Pearl. All I can say is that THIS IS THE STRONGEST PEARL I"VE EVER THROWN! BAR NONE. This was bought off e-bay, a 15.2 lbs, 4 inch pin, and close to a 3.0 oz top. Pin is drilled to the right and above my ring. I've only been throwing on ths so far, and the only time this ball doesn't hook, is when it's on the rack!
So I'll be bowling in the adult/child league this summer, and will be throwing both dark's. I'll be writing another review then the league season starts!

Mr. Old School
If you can''t swing it, Your probally throwing brunswick!