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Stimpmeter - Measure Putting Green Speed

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Learn how to build your own stimpmeter here. Scroll to the bottom of the page.
Try
out my Distance
Calculator. You can input different conditions to
see how they affect your tee shots.
A
stimpmeter is a device that measures the speed of a green.
The
Stimpmeter is an extruded aluminum bar, 36 inches long, with
a V-shaped groove extending along its entire length. It has
a precisely
milled ball-release notch 30" from the tapered end (the end
that rests on the ground). The underside of the tapered end
is milled
away to reduce bounce as a rolling ball makes contact with
the green. The V-shaped groove has an included angle of 145
degrees,
thereby supporting a golf ball at two points ˝" apart. A ball
rolling down the groove has a slight overspin, which is thoroughly
consistent and has no deleterious effect on the ensuing measurments.
The ball-release notch is designed so that a ball will always
be released and start to roll when the Stimpmeter is raised
to an angle of approximately 20 degrees. This feature ensures
that
the velocity of the ball will always be the same when it reaches
the tapered end.
The end result
from the ball accelerating down the stimpmeter ramp is a speed
of 6.00 ft/s. The distance that the ball travels is the stimp
speed (i.e. 10.5 ft roll means a stimp speed of 10.5)
Find out
more at the USGA by following this
link.
To build your own stimpmeter
Go to your home center and get a 4 foot section of moulding called "cove moulding" ( $4.00). This moulding is flat on the back with a perfect golfball size groove in the center. Cut a length to 36". The groove for the ball should be 6" from the top. With a coping saw, carefully notch a 1/8" wide groove into the wood at 6". Place a ball in this groove and test to see if it releases when you raise the top side. The correct release point is 20 degrees. You will have to experiment with the notch until you feel you are getting it to release at this angle.
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Try out my new Driver
Distance Calculator. Change temperature, clubhead speed, loft,
energy and see how far the ball goes.
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Wind Caddy App
From the team that brought you the top selling app Wind Meter, GoingApps is happy to introduce Wind Caddy. Wind Caddy helps the golfer always select the right club for the conditions. Wind Caddy works by collecting 4 inputs and recommending a club and correct Aim for the hole based on a proprietary algorithm developed by professional Golf Caddy and avid golfer Ken Tannar of www.probablegolfinstruction.com.
Wind Caddy will advise you on aim, distance and club so that you can play the wind successfully. It takes the guess work out of club selection.
Click Here to Learn More .... |
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Of course,
every measuring device is prone to error in measurement. With
a stimpmeter, there is error when measuring the speed on sloped
greens. There is a method used to reduce this error. Find out
how by clicking
here.
©Probable Golf
Instruction, Ken Tannar 2001-2012. All Rights Reserved.
Langley, B.C. V2Y 2G4 Canada
Phone: 604-309-7030 FAX: to fax, email an attachment
probablegolf@yahoo.ca or golfexpert@probablegolfinstruction.com
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