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Probable GOLF Instruction
Lower scores by making better choices on the course. New golf technology; more distance.
Applied physics & math to improve golf. Free golf tips based on the latest scientific research.

New pages:

How to Sink More Short Putts -- June 20/13

Golf Club Range Calculator -- Temperature, Altitude, Wind -- July 1/13

Golf Driver Launch Angle = Distance -- August 15/13

Stimpmeter - Measure Putting Green Speed

stimpmeter, golf course, golf club, golf ball, golf statistics, golf instruction, golf tip



Great Gift Ideas for Your Golfer

Golf Like a Genius T-Shirt

Engraved Ball Marker, Divot Tool, Hat Clip


Engraved Ball Marker, Divot Repair Tool, Hat Clip
Ball Marker Engraved
Engraved Ball Marker, Divot Repair Tool, Hat Clip

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One Club Length, Different Lofts One length club, one swing, more consistency.One length club, one set up, one swing, more consistency. Let the club do the work. Enter the code 10504 and receive a complimentary set of club covers.

Learn more about these revolutionary clubs HERE.

For a short time, One Iron golf clubs will have free worldwide shipping. And, notify me of your purchase by email, and I'll send you a complimentary "Swing Like a Genius" T-shirt.

Putting Glasses help you read the green. $19.95
Golf Ball Putting Glasses with UV Protection

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There's much more to learning this game than hitting it long and straight.

Visiball Golf Ball Finders
(as seen on the Golf Channel)

Golf Ball Finders -- Glasses so you can find your golf balls Model V-500.

View Demo of how they help you find your lost golf balls.


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Swing Speed Radar with Tempo Timer Measures Swing Speed and Tempo

Doppler Radar $149.95

Swing Speed Radar Measures Swing Speed

Doppler Radar $99.95


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.

Try out my new Driver Distance Calculator. Change temperature, clubhead speed, loft, energy and see how far the ball goes.

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

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 ....

Downloadable Golf Tips

Putting Statistics Spreadsheet -- Keep track of your putting stats


Optimum Loft Golf Driver Spreadsheet -- Discover the loft for your driver = max distance


Golf Elevation Tool -- Determine the Ranges of your clubs at different elevations & temperatures.


Longest Golf Ball Report 2007 -- What are the game's longest balls?
Hit the Longest Ball with New Driver Technology
Reading Wind Speed and Hitting the Right Club
Reading Elevation Change and Hitting the Right Club
Reading Greens by Plumbing to Avoid Under Reads
Probable Golf Sleeve (All 3: Wind, Elevation, Plumb)
Probable Golf Bag (Golf Sleeve + Shot Pattern Analysis)
Average Golfer Stats: Match Play Fair Handicaps
Average Golfer Stats: Team Games, Best Handicaps
Average Golfer Stats: Fair Birdie Games
Average Golfer Stats (All 3: Match, Team, Birdie)
Golf Club Distances vs Temperature
Golf Club Distances vs Altitude
Golf Club Distances vs Temperature Altitude


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.

ŠProbable Golf Instruction, Ken Tannar 2001-2013. All Rights Reserved.

Langley, B.C. V2Y 2G4 Canada
Phone: 604-309-7030  FAX: to fax, email an attachment or
Site maintained by Ken Tannar.

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Golf Trip Pairing Calculator

Planning a golf trip with some friends/family? Trying to sort out the foursomes so people don't play too often with others?

Order your ready made Spreadsheet. Type in the names, print out the groupings. Minimize repeat pairings.

Learn More

Wind Caddy App

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.

What's new in Version 1.2?

New option to enter custom distances for each club. The algorithm will make a club suggestion accordingly. Use the right club in every condition!

Click Here to Learn More ....



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