Speed Testing in Limited Space, Speed Chart Wedge to Driver

[joostin]

I've been stuck inside due to winter weather but have been wanting to test swing speed because of reading about speed training, watching Dr. Kwon etc.  The best I can do at home are shorter clubs and driver choked down 2" getting dangerously close to my attic roof lol.

 

I posted this chart in another thread that got moved to the WRX Tech club builder forum, but this post is about speed testing... not building or training.  It's been accurate for me in predicting swing speeds of all clubs by just swinging a sand wedge for instance (despite weight differences).  Ramping up to true max swings with a wedge is weird at first, and not recommended for golf, but can actually indicate your driver speed if you can't swing driver indoors. 

 

Clubhead speeds topping out so far using PRGR radar:

 

- Sand wedge 35":  95 mph <- predicts 45" driver at 122 mph and 4 iron at 105

 

 - 4 iron 38.5":  105 mph <- correctly predicted by wedge; predicts 45" driver at 123

 

- Driver choked to 43":  119 mph <- predicts 45" driver at 124.5

 

- It does seem that since clubs get lighter as they get longer, the speed progression may be a little higher than the chart indicates, but not by much.  Maybe +2 mph from wedge to driver for me so far.

 

- I'm building a 43" 3 wood soon which is heavier than driver, and will see what speeds I get.

 

Would love to hear if others find similar results.  Find your approx. driver swing speed in the chart, and see the correlated speeds for other clubs based on club length:

 

 

Explanation here:

https://forums.golfwrx.com/topic/1848507-swing-speed-vs-club-length-math-only-update/

 

The old PGA Trackman numbers definitely don't see them swinging with driver effort on short clubs.