General Ball Info
500 / 4000 SiaAir
Navy Solid / Emerald Green Pearl
The Radical Guru Mighty is the follow-up release to last year’s popular Guru. It uses the same asymmetrical weight block that was found in the original. The Mighty Guru differs from the original in that it has a hybrid coverstock and a smoother 4000 SiaAir box finish, whereas the Guru had a solid cover and a 1500 SiaAir box finish. The Mighty Guru offers more length and back end reaction than the first Guru, but it still manages to provide a big amount of total hook.
Just like with the original Guru, we had the best reaction with this ball on our heavy test pattern. All three testers were a just a few boards farther left with their feet than they were with the Guru and they were seeing more motion at the end of the oil pattern. Any bowler who sees more skid than they like on heavy patterns can easily adjust their coverstock with an appropriate pad to get their Mighty started earlier on the lane.
When we moved to the medium pattern, the smoother surface finish was a benefit over the rougher cover of the first Guru for both our Stroker and Tweener testers. It allowed the Mighty to glide through the front more easily and save more energy for the back end. When the pattern started breaking down and the testers started moving left, the smoother box finish helped kick the corners out much better than the sanded box finish of the original Guru. Cranker, on the other hand, saw way too much total hook on this pattern. After a few shots, he added a coat of Royal Shine polish to his ball’s cover. This gave his Mighty the extra length it needed to match up better to his high rev game on this pattern.
When we moved to our flatter sport pattern, the box finish was best for all of our testers. The Mighty’s coverstock was plenty strong enough to hook through the oil toward the end of the pattern, while the smooth 4000 grit finish of its cover kept it from hooking too early and hitting flat.
Strengths: The added length and back end motion from the original are the big positives of the Mighty Guru. This ball will allow bowlers to open up their angles more than they could with the original.
Weaknesses: Like the first Guru, this one is more suitable for use on conditions that have a good amount of oil. There are plenty of better Radical options for medium and drier patterns.
Overall Summary: The Mighty Guru offers the same large amount of total hook as the original Guru. Its hybrid cover will clear the front of the lane more easily and allow for a bigger change of direction at the breakpoint and back end.