Trackman 4 vs GC2 Outdoor Result

[LEO MODE]

Well, GC2 is still one of the best selling products I am sure. And from my testing this is an awesome product at a reasonable pricing. So Foresight still needs to focus on this population and still make it active. After all, they’re still selling it and didn’t discontinue it so...

[R3dlineR6]

My intention was to change the aim in the simulation software (TGC)...more to the right and not change the placement of my GC2. It would be great if foresight could fix the issue on their end, but I doubt that will happen since the product has been out for several years and they're focusing on new products now.

[LEO MODE]

Redline unfortunately I don’t think it’s as easy as it sounds. Because you cannot tilt gc2 as it’ll screw other numbers. And sometimes GC2 reads it correctly like 2-3 times out of 10. I think if this is a common result for a lot of GC2 users this needs to get fixed by Foresight.

[R3dlineR6]

I guess I'll just need to aim to the right as well on shorter shots. Funny how easy I can turn the ball both ways with my mid irons all the way up to the driver. But it's nice to know that everything else is pretty much the same as the trackman except that left spin. Thanks for doing this test Leo Mode !!

[LEO MODE]

Mthunt, I don’t think GC2 will hook more to the left indoor, because GC2 will output the same result regardless of where you are (under the same setup) indoor or outdoor.

With my findings indoor with Trackman, assuming that GC2 will output same data, it looks like Trackman is on the other hand a little bit slightly fade biased (and GC2 still being draw biased of course). Because I get more difference in Spin Axis indoor than outdoor.

I believe that indoor, the truth is in between leaning more towards Trackman’s ball flight.

[LEO MODE]

I didn't do my outdoor test again but with indoor this time I elevated by 7/8". But still similar result. Actually GC2 hooked slightly more.

Found another wood platform that is about 1.14" high. I will try with this again.

[mthunt]

I'll also add that my golf friends I know from tournaments are all plus handicap and of all of them only I get the draw bias. Strange.

[mthunt]

I get really high left spin with shorter clubs in my sim but far less to almost straight outside. I actually just aim right. Given that it predominately happens inside, I kind of gave up. Some members stated that Tilt helped and some stated that raising the GC2 helped. For me the lower the club the higher the left spin. I figure it's either alignment or the mat for me.

[andygg1986]

I'm following this as well. Mthunt sent me the tilt calibration but it didn't seem to make any difference in my case. I also see it get worse with higher lofted shots.

The only thing I can think of is if the algorithm doesn't take into account the changing height of the ball between pictures. If you put a dot on the center of the ball facing the camera when the ball is sitting on the ground, the dot will appear to shift up on the ball if you raise the ball up. If your spin axis has a draw to it, a spot on the middle of the ball would rotate around a location above it, resulting in it moving towards the top. It is hard to believe that Foresight's engineers wouldn't have thought of that though. All I know is that with a lob wedge I can lay the face wide open and cut across the ball and at most I get a few degrees of fade spin. I also start all my pitching wedge shots 7 or 8 degrees right and still have lots of them end up 10-15 yards left of the pin.

[R3dlineR6]

Try to calibrate the GC2 then run it again. Might make a difference. For sure won't hurt the GC2 as long as it isn't a GC2t

I'm also curious about the GC2 and left spin. I get a lot of left spin with short clubs (Doesn't happen in real life). I saw that you made a thread about this issue a few years back mthunt. Did you ever fix the issue ? Did running the calibration tool fix that for you ?

[mthunt]

I use a book to elevate my GC2. lol

[mthunt]

Try to calibrate the GC2 then run it again. Might make a difference. For sure won't hurt the GC2 as long as it isn't a GC2t

[Snaphook]

I When you do the next test, try to see if you can spot a difference with the gc2 elevated vs level.
I wonder if one could do a test with two gc2:s one for righty and one for lefty where you swing over one of the units? This could be a useful test to determine best height for unit.
Also interesting to see if they would show same curvature for both a draw and a fade.
Anyone have two units?

[LEO MODE]

It was on the same level. I couldn’t find any 7/8” elevated platform to try it. At home I can try to lift it up 7/8”.

And yes the launch direction was more to the right on GC2 but it was within 1 degree which is not even an issue, unlike Spin Axis which was like 10 degree off.

[Snaphook]

Good test. Will be interesting to see your indoor results. If possible use some impact spray/tape to see differences whit heel and toe hits.

In your outdoor test the gc2 was showing launch direction more to the right. So that would indicate that it's even more draw biased than your sheet shows right?
Was the gc2 elevated from the ground at all?