Mevo+ spin axis issues

[pwade3]

Today was the first day that I really was able to try out the Mevo+ indoors. It started out very well and I was impressed with what I was seeing and numbers were similar to the Skytrak. More importantly the numbers were correlating to how my shots were feeling. I went pitching wedge, 8 iron and 6 iron. The M+ never missed a shot but it did have two shots it did not pick up club data but showed ball data. Spin axis seemed just fine as I was trying different shots (draws, fades etc) to see what it would pick up and it seemed fine. Spin axis was always a little less then the skytrak but only by a little.
Where things got weird was when I moved to the Driver. It would only read a large “right” spin axis where the skytrak would read left. The discrepancy was large. I even hit a few snap hooks on purpose and it would still read only a right axis. Has anyone seen this, or have any idea what is going on? I tried this with my 3 wood and same thing. Tried it with a hybrid and same issue. Went back to my 6 iron and it read almost exactly the same as the skytrak and would post a left axis when I hit a draw. I took some screen shots so you can see what I mean. It was odd to say the least and very disappointing. I had about 30 shots with the driver and maybe had 3 that showed any form of left axis.
I will add more pictures when I get them organized.
And none of you long bombers laugh at my weak numbers, I just turned 60, but I am a 5.4 index so I can play. Lol 😆
Mevo+ was 8ft from tee. 12 feet of ball flight. I tried both indoor and short indoor and found not difference. Almost all shots were with prov1 with metal dot. Tried without dot and no difference. No metal door behind screen (garage door is behind Mevo+)
Wire cables hold up screen but no other metal to interfere.
Tried with Skytrak removed and no change.
I have a fluorescent light in hitting bay, but it is not on. Does that matter if its on or not?? I know it can cause interference but is that with it on and why only driver and woods?
I tried leveling and aligning Mevo+ several times but no difference.
I will take it to the range in the next day or two to see what it will show (just need it warm up a few degrees)

[Dax]

I think of the fluorescent light being on would cause issues, but five. You don’t have it turned on there should be no issues. Also, if it were causing issues, then I would expect you to have a lot of no reads. This, I think you can remove this as an issue.

[Ba2]

Guys accept it. Spin axis is a problem with radar units including trackman. They all calculate using club data. Just accept the fact and move on. If you want something that measures spin axis indoors, buy quad, gc2 or Skytrak. All of them measure it.

[keither5150]

You may be incorrect here. The Mevo + does not measure club face or club path. So how are users shaping shots? With a marked ball, SA can be measured. SA can be calculated but in order to do that you need to have club face and path.

[a98cr125]

I have not had that issue. I see someone above saying all radar even trackman has that issue but I am pretty sure mine has been really inline. HD Golf which I did a side by side with showed data very close on spin axis and that is comparing a $2000 radar to a high end 4 camera system. I can for sure do more testing and pay attention to spin axis more. Spin RPMs are incredible close. Heck a 8 iron I hit one time was literally 1 rpm difference lol. All of those videos are in my YouTube channel if you have not seen them.

[Brutaly]

Agree, i hit literally hundred of shots side by side with my ST and have not got axis issues.

But it got me to realise how unreliable ST is regarding total spin on thin shots.

Sold the ST a couple of days ago since I am done comparing.

[mikestuewe]

Brutaly, do you still have the data from those 100 shots?

[Brutaly]

I got the Mevo data but the ST data is gone with the device

[Dax]

Guys accept it. Spin axis is a problem with radar units including trackman. They all calculate using club data. Just accept the fact and move on. If you want something that measures spin axis indoors, buy quad, gc2 or Skytrak. All of them measure it.

i also think you should look at
LEO MODE Testing on his TM4 since the updates on gear effect.

[pwade3]

GungHoGolf a98cr125 I had been following all your videos and saw the accuracy to your HD golf. This is why I think it may be a environment issue. It just does not make any sense that all iron play was literally spot on with ST and M+ and what I expected from the shot and then when I go to the driver/wood/hybrid it has an extremely off spin axis. It was not off a little, it was off a lot. I had some that showed on ST of a 7 deg left a six and M+ showed 17 deg right. I had one snap hook that was 33 deg left on ST and 0.5 left on M+. I am taking it to the range today once it warms up (-2C this morning). I had also seen gunghogolf data sheet when he was one of the first to compare data with M+ and ST and spin axis was only slight different. Anyway, I will see what the range brings and if it looks good, I will try indoors again.

[pwade3]

I realize I do have a metal door that is not behind the impact screen but off to the side in the next bay. It is screened by a curtain. Is it possible this is a problem? And again, why driver? Why not irons.

[Dax]

pwade3 it is the driver and other woods including hybrid where spin axis could differ the most given the bulge on the club face versus none on an iron. This is really where I think spin axis testing should really concentrate.

I am not sure whether testing at the range will provide good a good indoor testing as I would expect that the radar will read the ball for as long as possible even though it is set to indoor mode. I appreciate the comment someone made where they said that Mevo reports the shot prior to the ball landing, but I note that I suspect all radar needs is likely no more than 20 or 30 yards in order to have a good indication of spin axis. Perhaps someone might have read the actual length needed for radar to accurately read spin axis.

[pwade3]

thanks Dax. I’m hoping at the range, I will see normal spin axis with driver and that would mean I need to concentrate on what is going on in the sim. No one has reported anything like what I’m seeing so it must be something odd.

[Dax]

I am still waiting to see Leomodes testing of indoor gear effect updates from TM, but the last time he tested i believe he said it worked about 80% of the time (last summer I believe, but there have been two updates since then). The 80% could possibly be lower for the Mevo and maybe It could just be the “20%” of the time that you are seeing. I would definitely continue to test, but suspect that there could be gear effect problem a certain percent of the time on a certain type of miss hit.

[Dax]

I am still waiting to see Leomodes testing of indoor gear effect updates from TM, but the last time he tested i believe he said it worked about 80% of the time (last summer I believe, but there have been two updates since then). The 80% could possibly be lower for the Mevo and maybe It could just be the “20%” of the time that you are seeing. I would definitely continue to test, but suspect that there could be gear effect problem a certain percent of the time on a certain type of miss hit.

[Dax]

pwade3

I don’t see how the metal door off to the side could be an issue, but please don’t rule it out. I think the issue is when the door is more in line with the radar and the ball as it would create a lot of reflection and interference. So much interference that I would guess you would not get a read at all.

as for the driver, the issues is caused by gear effect created on off centre hits and the bulge in the face of a wood. Most pronounced with a driver.


nice setup by the way’

[pwade3]

Thanks, I will try with the door open or a something draped over it to remove that issue.

[Bubba22]

I totally agree with Dax. Spin axis with the driver and woods is where differences may be seen. As we know from Trackman and GCQuad, drivers and woods will have much higher gear effect than irons. Long irons will have greater gear effect than wedges. The real test with any indoor unit is with long irons and woods that are hit off center. I believe that Trackman has a new update to take into account gear effect for those shots. Perhaps Dax and Leomode can comment on that. The question is does Mevo + take that into consideration. Center strike will probably be ok.

[pwade3]

Bubba22 Yes, agreed, but even my center strike shots, such as the one I posted showed a very pronounced right axis on the M+. I certainly do hit a certain amount of shots that are toward the toe (gear effect), but a higher percentage were center strike. Again, I’m sure its something I’m doing or environment related. The discrepancy was too large. I am going downstairs again this morning for a few shots before I go to the range and freeze my arse off. Lol. 😷

[Bubba22]

Can you take the Mevoplus to the range and setup as indoor mode? Does it automatically follow the full flight of the ball anyway?

[pwade3]

Good question. I will try that.

[Dax]

Can you take the Mevoplus to the range and setup as indoor mode? Does it automatically follow the full flight of the ball anyway?

That’s my questions as well. I am told you can set it to indoor mode and use it on the range, but I just feel Mevo will track the ball for a longer time in any event and the provide accurate spin axis. Someone told me that it does report the shot before the ball lands, but this could just be because it is reading 30 yards of flight and that perhaps 30 yards is sufficient to measure spin axis.

[pwade3]

I had this from Mevo support:

In Indoor Mode the Mevo+ will track the ball for up to 40yds, so your 25' distance would be perfect. The Mevo+ would then track it with your setup until it hits the screen. The longer your ball flight you have the better.

If you have any further questions, please do not hesitate to contact us.

[Dax]

I think 40 yards would be more than enough for radar to get accurate spin axis. Thus this would not give you an accurate indication of what is going on indoors. I would still test though just to be sure your radar is working properly, but maybe just get a small bucket given the temperature.