Question

1.35K viewsOctober 27, 2021

SamRebus 22 October 26, 2021 0 Comments

Hello,

I have to replace 2 broken shafts in older Callaway FT i-brid (2008) irons, not bore through. Original shafts are Nippon NS Pro 990GH, which I actually managed to locate and buy on ebay (made in 2005, but brand new), but now i need to figure out what is tip trimming code to match stiff flex of the iron set. I am thinking IR11, but not sure. These are not like modern Nippon shafts, which are pre-cut, no tip trimming. The shafts are 41″ long and marked as stiff flex, so clearly they need to be tip trimmed. I cannot find any info on the internet. I thought maybe someone here has old specs. If anyone can help it would save my day.

thanks in advance

Britt Lindsey Answered question October 27, 2021

1 Answer

Answer 1 · 2021-10-27T12:16:23+00:00

I looked back to when we started carrying Nippon and all the sahfts we have carried have always been discrete length options, both parallel tip and taper tip. No 41″ blanks. So, difficult to say for sure how to trim them to get the right flex. I would measure the parallel tip section length to know how much you have to work with. We don’t know if it was a combination flex or just an S flex. If it is just an S flex, you might look at IR2 as the code, which is the same as Dynamic Gold. IR6 would be 1/2″ less trim and is another trim progression that is used on other products. You might trying calling Nippon U.S. and seeing if they could give you some guidance.

Britt Lindsey

Thanks, Britt
I believe Callaway sold these at one point as “uniflex”, so i assumed they can be trimmed to R or S flex. But now i have my doubts, cause parallel section is only 3″ long. Might be IR16. Good idea, i will phone Nippon so see if we can identify them.