Crazy Backspin

[Ruben martinez]

Hello ,

Mat is fiberbuilt , my son 8 year old has been playing for 3 years now , recently we have been getting 10.000 K plus backspin numbers with his woods ,hybrids,and driver ,half his shots have this high backspin ,even off a tee.

Also we loose the laser alot , room is dark only light are from the projector , new balls , window on ST is clean .

My son is a very good Jr Golfer he has been hitting indoors with his coach for a few years so we are sure it is not caused by a bad swing ,his driver backspin is in the 2,300 to 2,800 range .

Any thoughts ?

Regards

Ruben

[GungHoGolf]

Put some light on the hitting area with a halogen or incandescent spotlight or narrow flood. And make SURE you have the logo of the ball towards the unit for every shot.

[Ruben martinez]

Thanks for the reply Gung HO ,

we have tried with light ,no light , logo always facing the unit .
it has done nothing , irons are fine ,its just the spin on the woods that is insane .

Any other thoughts ?

[GungHoGolf]

Have never heard of this problem. You’ll probably need to send it back to SkyTrak for them to check out. First make sure you’re running the latest version of the software.

[Ronsc1985]

I have seen the same thing on a Vector Pro which used the same analysis method as a Skytrak.

When you have slow ball speeds and not much change in elevation between the two ball pictures it takes the software has a hard time drawing a software line around the ball perimeter. This ball outline is the starting point for the analysis of ball speed, spin and launch angle. While the analysis software may be able to get a correct reading for the ball speed and launch angle it had a hard time computing spin with ball images that have a lot of overlap. In the Vector Pro you could change the the time between pictures to cut down on the overlap for slow ball speeds I don't know if a similar parameter is adjustable in a Skytrak.

You can see if this is the problem by hitting a ball yourself. I would think an 8 year old doesn't have ball speed anywhere near any adult. If you don't have the same problem hitting lower lofted clubs then the Skytrak is O.K. and you have just run into to a basic problem with using only two ball images for analysis. There is a reason why a GC2 uses multiple images and more for lower ball speeds so they can separate the images.

[Ruben martinez]

Thanks Ron sc ,

That makes sence ,my 8 year old is not your average 8 year old he plays competitive Jr Golf carries his driver about 140 ,but its a logical answer thank you , I do not have the high spin issue with my woods, my only issue is that I am one club short on Skytrack and feel I have to swing harder to achive the same distance as out on the golf course .

So Skytrack is not good for Juniors ,anyone outhere have this issue with there kids?
If this is the case I have a younger boy that is just starting I think I see

GC2

in our future .

Regards
RM

[GungHoGolf]

Low ball speed is not the problem - SkyTrak works fine for juniors. A white driver head *may* be the culprit - you could try covering it with some black electrical tape to check. Also try teeing up the ball a couple inches behind the red dot so driver head shouldn’t come into the view of the cameras.

[Morini]

As with 99% of competitive juniors, he is probably playing with US Kids tour series clubs. I don't know if they have changed design in recent years, but woods used to have mostly white heads. That could be your culprit.

I don't think low ball speed is the problem. And as far as I know, adding light will not help as the ST works fine in the dark ... ball is illuminated by IR strobe.

[Ruben martinez]

Thanks for the help guys ,Gung Ho , his driver is a cobra F9 Junior , black head with some yellow underneath ,the shaft is white ,I will try and tape it tomorrow with black tape and see if this helps ,and yes we tee the ball up a few inches behind the red dot.

Morini yes his hybrid and 3 wood are

US Kids ,but we have the newer ones , black heads , blue shafts , no stickers on the shafts .
all the walls in out room are covered with black theater curtains , only white is the impact screen .
Ball new Pro v1x ,tees are fiberbuilt black ,mat is fiberbuilt
Thanks for the help ,

I hope someone that had a simular problem chimes in ,11,000 k spin with woods is not fun .

Regards

RM

[Morini]

Hmmm. Mystery deepens. If I understand this correctly:

1. Only junior has abnormally high spin
2. Only for woods, and occurs about 50% of the time.
3. Driver is not reflective.
4. Happens with tee and without.
5. Laser goes out.

I see no logical explanation. If the rest of his clubs, and all of yours read correctly, there is nothing wrong with ST. If the clubs are not reflective, has to be something unique to his swing.

• As mentioned hit his clubs to see if you can replicate. If not, it has to be something specific to your son.
• If the clubs aren't reflective, maybe his shoes are? Reaching here, but running out of possible explanations. And it could explain why laser goes out.
• Have your son start with easier swings, say 50%, and speed each swing up until the problem starts showing up.
• Footspray the club face to see if impact location makes a difference.

[Morini]

I should add that what the woods have in common is low launch angle. Not sure if that is relevant. It is possible that ST is more likely to misread spin when the ball is at the bottom of sensor view. You could try to tee the ball back a few inches to see if that has any bearing.

[Ruben martinez]

Morini thanks ,

Hmmm. Mystery deepens. If I understand this correctly:

1. Only junior has abnormally high spin Yes

2. Only for woods, and occurs about 50% of the time. , Actually more than 50 percent of the time its almost every shot lately

3. Driver is not reflective. Driver is Cobra F9 King ,it does have yellow on the bottom ,shaft is white ,today I will cover the yellow and tape the shaft to rule this out ,but its also happening with wood and hybrid ,and those are black .

4. Happens with tee and without. YES

5. Laser goes out. YES this is also happening with me and friends not just JR .

Irons are fine they are shorter than IRL ,I am not scratch or anything but I have friends that are and all have said they at least one club short on skytrack , Ive read to many post on that to even worry about that we could live with that, but the Backspin issue is becoming a pain . I spent about 15 K on my setup mostly so my Juniors can use it ,if I need to upgrade to GC2 its almost XMAS hahhaha.

I should add that the woods have in common is low launch angle. Not sure if that is relevant. It is possible that ST is more likely to misread spin when the ball is at the bottom of sensor view. You could try to tee the ball back a few inches to see if that has any bearing.

We have tried this ,his coach has him do a HIGH TEE DRILL , tee the ball up high and hit it , helps shallow the swing ,even then we get the Crazy Backspin numbers.

We will try your recommendations today and update .

Thank You

Regards
RM

[Ruben martinez]

Hello,

so I have tried all the suggestions and still we are getting these high BS numbers.

could it be an issue that I am on the same mat? I know the mat itself is not moving as there is carpet around it,

I have attached a image I dont know were else I would put to Skytrack other than were it is .

also if the issue is the skytrack moving why is my son the only one with the high BS.

I'm just trying to cover all the bases all very frustrating.

regards

RM

[Morini]

If you want to cover all the bases, then yes, you should hit with the unit off the mat. Also with the FMJ case off.