Update: New beta released to the beta testers.

[Clubfitter73]

Version 0.0.2.10 has just been released the current 12 beta testers.

- new user interface for the shot data, it will resize if the screen
allows.
Not completly but it will show the values slightly bigger
- raw radar data graph can be minimized
- [bug solved] pre-impact clubs data shows only the last shot and not
all shots
- You can select/enter both club and client for each shot
- You can see all old session data that are saved in the database
- For all old session you can also see all shots in that session
- For each session/club the shot list now also include the averages
for all
shots.
- For each session/club the shot list now also includes the standard
deviation
- It beeps the last 5 seconds before the LM will disarm

[bobsai...@shaw.ca]

okay, I've been testing version 2.11 but could only get spin to work on 1
out of 10 shots and it read over 10,000 with a 9.5 degree driver. I put a
aluminum dot on the ball as large as the dimple. I used that very shiny
silver tape the tinsmiths use on duct work. Should I be using a bigger dot?
Thanks.

Bob Sailer

[bobsai...@shaw.ca]

\what does the column "last data (feet)" mean?

[bobsai...@shaw.ca]

okay I put on a bigger dot (about 3/8" in diameter) and got spin on 3 of 11
shots (9393, 10990, and 6762) all indoors with 11 feet from tee to net. I
have a positive A of A so does this seem high? My flight doesn't balloon on
the course.

[Rick Malm]

I tried some duct tape and it failed to record any spin. Size was 6.2mm vs your 3/8" or 9mm.  This tape was so thin I could not measure thickness.

I tried 12, 15 and 18ft  from tee to net, but did not try any under the PL spec.  All failed.

 I also tried some 1/4" head flat head screws but the slot in the screw might be causing
noise. This did result in some spin values but not 100% 
I also tried using only battery power vs AC and made sure all my fans and lights were off
but I still have quite a bit of noise in the raw signal.

Then Frans suggested lead tape.  6.2mm (which is a 3 ring binder punch hole size).
and .35mm thick. This worked alot better, got 80% of the swing with spin, but the spots did not stick well with the adheasive that comes on the 1/2" lead tape.  I have JB Weld epoxied them to the balls now but after I did I was thinking that
maybe an even larger diameter will help us or even a large rectangle.  For example:
6 years ago Zelocity suggest metal strips instead of dots in their user manual.
Their 3.0.3 manual shows a small picture of a ball and strip. 1/4" x  ball circumference.
Ball strip is placed perpendicular to the target line and goes all the way around the ball.

Maybe Frans can make a suggestion on what might be the best size and shape.

On Mon, Jul 4, 2011 at 8:18 AM, <bobsai...@shaw.ca> wrote:

okay I put on a bigger dot (about 3/8" in diameter) and got spin on 3 of 11 shots (9393, 10990, and 6762) all indoors with 11 feet from tee to net.  I have a positive A of A so does this seem high?  My flight doesn't balloon on the course.

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[bobsai...@shaw.ca]

the tape I described earlier should work very well and it sticks really good too and is very shiny.  I'll try the 1/4" all the way around the ball and see what happens.  I tried 2 dots but not any better...1 or 2 out of 10.

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[bobsai...@shaw.ca]

nope, no spin with 7 shots with the strip all around the ball.

[Rick Malm]

Yes I tried 2 dots as well and 2 screws.  No major improvement.
The 1st duct tape I used is what you suggested, Yes very reflective to light
but maybe radar can be reflected better by a more dense mass that is a better conductor.
I also wonder if the rounded shape or a dot is more like a round edges of a stealth plane.
So maybe the straight edge of the tape strip would be better.

R

[Rick Malm]

I bet you need at least 12 ft of flight.  Back up your tee from the net
and check you 5ft distance to the tee as well.  Frans uses 14.5 ft.

[Rick Malm]

Also try a more lofted club.  Frans says you need at least 3 rotations to be captured.
If your spin is low and your using driver (high bs) then you will not get enough
rotations in even 12 ft let alone 11 ft.

[Clubfitter73]

On 4 jul, 17:09, <bobsailerg...@shaw.ca> wrote:
> \what does the column "last data (feet)" mean?

Last moent in the ball flight where the ball data still is good enough
to be used in calculations.

[Clubfitter73]

- I use one dot, 0.1 mm thick and 7mm diameter.

- in my cage (14.5ft) I get 12 feet of good data (last data)

- If you use two dots on opposite position of the ball the spin values
show will be incorrect (2 times too high) as the software is not aware
of the two dots. But you will then not need 3 rotations but only 1.5
rotations.

- If you use a driver and have low spin then you need enough ball
flight to record 3 (or 1.5) rotations!

- make sure you place the ball with the dot correctly on the tee or
mat.

- With any measurement you need clean radar data! More noise means
more pikes and those spike will replace any data generated by the
dots. Those pikes will also throw of any LA or ball speed calculation.

[Clubfitter73]

On 4 jul, 22:58, Rick Malm <rick.m...@gmail.com> wrote:
>
> Then Frans suggested lead tape.  6.2mm (which is a 3 ring binder punch hole
> size).
> and .35mm thick. This worked alot better, got 80% of the swing with spin,
> but the spots did not stick well with the adheasive that comes on the 1/2"
> lead tape.  I have JB Weld epoxied them to the balls now but after I did I
> was thinking that
> maybe an even larger diameter will help us or even a large rectangle.  For
> example:

if i understand radar correctly you need to use metal as conductive as
possible. There is no relation to light reflection at all.
Also the size should be 1/2 the wave length. As the PL uses
24125000000 hertz then 0.5 wavelength would be indeed 6.2mm. The less
wrinkles the beter.

> 6 years ago Zelocity suggest metal strips instead of dots in their user
> manual.
> Their 3.0.3 manual shows a small picture of a ball and strip. 1/4" x  ball
> circumference.
> Ball strip is placed perpendicular to the target line and goes all the way
> around the ball.
>

I created a ball like that when I first started testing the original
zelocity software. I guess the good thing about a ball with the stripe
is that it will not be sensible to spin-axis tilt but maybe that is
also its major drawback? Also the wrinkles migth cause it to be less
easy to be measured by the PL

I still have that ball, I will do some testing tomorrow with it using
the beta software. Will let you know.