Often the choice of the iron shaft is not an easy decision. No wonder with such an oversupply on the market. We at WeissGolf therefore only rely on shafts in which we have complete confidence. For example, we only use original shafts, mostly from Japan. Nippon is a manufacturer of whom we are absolutely convinced. Nippon is mainly known for its Modus 3, but also offers other very high quality shafts. We would like to take a closer look at two of them in this test: Zelos 7 and 950GH in Regular. Both are (very) light steel shafts with 74 g and 94.5 g respectively and therefore suitable for players who want maximum control but are not willing to give up any support of the shaft. We often use both shafts in our daily fitting practice, so we wanted to take a closer look at them.
Setup of the test
Our player has the task to swing with 68-70mph and reach a 135m distant goal. And that with a Miura CB-2008 club head, identical shaft length and swing weight.
The input in comparison
It was a bit more difficult for the player to accelerate the Nippon 950 because it is a bit heavier than the Zelos 7, so the head speed was a bit slower with 68.3mph to 69.1mph. But that’s not dramatic, after all it’s only a 0.8mph difference that you can easily take into account when interpreting the results. The smash factor was 1.38 for the Zelos and 1.37 for the 950.
The test result: Nippon Zelos 7 vs. 950
A difference that is immediately noticeable is the difference in spin. Here the Zelos 7 with more than 4000rpm has about 400 more than the Nippon 950. Furthermore the Launch Angle is exactly the same for both shafts with 17,7°. Now, however, a slightly higher launch can be expected from the numbers on the Zelos 7 (dynamic loft and ball speed are higher). This means that the Nippon Zelos 7 tends to have a flatter flight.
The carry and total length is practically identical. This means that the Zelos 7 travels 2m longer in carry as well as in total. However, this is to be expected because of the 1.2mph more ball speed. One can hardly speak of a real difference here.
This test shows one thing above all: The differences between good shafts are often marginal. Here only more spin was shown with the Nippon Zelos, whereby this difference has to be put into perspective. The Nippon 950 tends to be more likely to have a higher launch, although there is practically no difference in this respect.
What this test says above all is that very similar shafts can still convey a different feeling. The Zelos shaft is lighter and easier to accelerate. This is another reason why it is used in the Honma XP1 iron. Because such a steel shaft is well suited for the XP1 target group. If our tester had to decide for a shaft, he would be able to go purely by feeling and does not necessarily have to pay attention to the values.