Trackman indoor spin rate accuracy

[frustratedgolfer]

Hi, new joiner so please be gentle!...

I have been on a Trackman outdoors and indoors and a Gc2 indoors too. Generally numbes seem similar on each.

However, with driver the spin rates vary fairly signficantly - on Gc2 driver backspin has been around 2,000 rpm, however on TM (both indoor and outdoor) back spin is 3,000-3,500 rpm.

I am going for a custom driver fitting on an indoor TM, but am worried that if the backspin on TM indoors is not accurate then we could be bringing the backspin down for the fitting but in reality take it too low.

It could also be coincidence, but on TM indoors it seems gar easier to hit a draw, compared to the TM outdoors or the Gc2 - is axis spin different?

How accurate are the spin numbers on each and should I be concerned about a fitting on TM indoors?

Thanks

[StuartG]

How can 15 feet from impact to screen possibly be functional? The screen would have to be 22’ tall to hit wedges lol

Whether it hits the screen or not has nothing to do with the functionality. TM (or any radar) only needs to see a certain amount of ball flight. What it hits at the end of that ball flight just doesn't matter. It can be the screen, top or side net or any type of barrier - it's all the same.

[Stetson]

I wasnt implying that the distance was too short for it to read, but rather that you would continuously pound the ceiling. But a ball that launches high enough to hit the ceiling almost certainly spins at a high enough rate to give the trackman an accurate reading before hitting the ceiling. But the longer length provides adequate time for lower spinning shots to register.

I was simply unaware that people were out there pounding balls off the ceiling consistently, on purpose, with no concerns. That is why one comes to this site, to learn.

[StuartG]

OK, that clears things up. Your reference about 'functionality' was a bit confusing. But as mentioned before, there are lots of ways to protect the ceiling.