Smash Factor and Club Speed Calculator

[Clevited]

Note: I can't seem to upload it on here or in a pm. If you would like to try it out, send me pm with email you would like me to send it to.

I created a little calculator to help me guesstimate smash factor better than Skytrak seems to. I have checked it against a lot of real world data and it holds up quite well.

This is to be used only for well struck balls, it won't obviously work with poorly hit balls. Hotter than usual faces will also cause some descrepancy. I am sure there are some other instances where its accuracy breaks down but I am not striving to cover all of that.

It can be used to estimate smash factor quite accurately, but it can also estimate what your swing speed should be with another club of specified length. Its fun to use to see what your ceiling could be with the driver for instance given a full rip with a 7 iron.

If you have any questions about using it, or the assumptions I made, or how things are calculated let me know.

Otherwise I hope you find it helpful and accurate.

[DirtyGarry24]

Hey there, I'd like to check out the excel file. I'll pm an email address when I get a few minutes.

[Clevited]

Sounds good

[Ryan_luan@yahoo.com]

+1. PM sent. Thanks!

[Clevited]

Yw. Any feedback on its apparent accuracy or in inaccuracy you can give will be appreciated.

[Clevited]

Ok, so one thing to note, the hybrid, 3w, and 5w I think I will need to tweak, but I feel the irons are pretty much as good as they can get. Spin and loft do some tricky things compared to irons the closer you get to 0 on the club loft, as well as the trampoline effect of woods. I will revise in the future and reach out to everyone who has asked for this.

[GungHoGolf]

SkyTrak_Seth Hope SkyTrak updates their algos to something closer to this! CH speed and smash are often wildly off, which reduces trust in the unit as a whole. Many users don't understand the difference between measured values and calculated values.

[Clevited]

I essentially used interpolation of known club data to create this. Smash factor really relies on launch angle and spin off the club. Barring an abnorally hot face, it seems to do well. It seems to give a better representation in a lot of cases regarding actual club speed than Skytrak. I am unsure how Skytrak calculates it but its definitely not so useful most of the time. I do however need the masses to use it and give me feedback so i can tweak it where needed.

If you middle one, punch in the numbers to my calculator and it seems way off, send me the screen shot so I can try and figure it out.

[Shawn Foley]

This is good stuff, thanks for sharing. Without the true club speed reading, smash factor is definitely difficult to estimate. However, there are many devices that can measure swing speed very easily that can often clip right to the club and you could calculate a quick smash factor from this if you desire.

[Clevited]

I have a swing speed radar, a Skypro, a medicus power meter and they are all, all over the place with accuracy. I therefore created this so I could hopefully have a more definitive idea of my ball striking quality and swing speed.

Again, if anyone wants to try it, PM me with an email I can send it to. Would be helpful to have some really consistent players who know their speeds really well to validate it some more.

[Clevited]

Just a bump to get this tool out to any others who want it before its forever buried in the forums.

[Timdm3]

Clevited i will take a look at this. Thanks.

[SkyTrak_Seth]

We are in the process of several new club data enhancements/integrations. One of which seems to be in-line with what you described above...would be happy to see how this compares!

[BadEddieKit]

Can you elaborate on this?

[SkyTrak_Seth]

Not at the moment

[Brutaly]

We are in the process of several new club data enhancements/integrations. One of which seems to be in-line with what you described above...would be happy to see how this compares!

Still waiting..... :-)

[Clevited]

Could I ask for anyone who has the calculator and tried it to comment on its accuracy. I have found it scary accurate, but that is for me. We all swing differently, and have different clubs so I would love to see opinions from others. Thanks.

[Clevited]

Duplicate post

[bbjr]

I do not have any other device to compare to other than the Skytrak, but when I put in my shot data that I have stored on Skygolf 360 (from Skytrak) I am getting more reasonable and consistent smash factor and club speed calculations using your spreadsheet. Thanks for providing this, looking forward to see what Skytrak is able to implement regarding changes to their calculations.

[Clevited]

Excellent, thank you for the feedback. I am glad it is helping you and you are finding it consistent and accurate.

[Clevited]

Here is a screen shot of the calculator for an example.

[Ryan_luan@yahoo.com]

In the screen as illustrated by your screen shot , how can you add more rows in the page, therefore each row represents a different club?

[Clevited]

I did not add that capability, its one club at a time so you can check your SF and swing speed on the fly. Interesting idea though adding the entire bag perhaps. I will think on that.

Edit: Actually come to think of it, if you are excel savy at all, you could copy down those formulas as many times as you want and have a line for each club if that is what you are looking for. Just delete the example stuff/pics. Otherwise, when I get a chance I will make a version with extra rows or a simple ability to add them if you want.

Edit 2: Nevermind, its not that easy. I will see what I can whip up.

[Clevited]

Ok, Ryan asked about adding more rows. I think I have created a version that will satisfy that. I have a tab that can be used to calculate smash factors for individual clubs, and then I have a tab that can estimate club head speed for entire bag, based on data from one club. I think I might in the future, make something that averages your smash factors, club speeds etc. You would enter data for lets say five good 7 iron swings. I can then take that and calculate your average smash as well as speed for that club. I can then estimate what smash and clubspeed is for every club in your bag based off that sample swing, and I can make it so you can do that 5 swing average for every club. You can save off copies, and see how you improve or don't improve over time. Kind of a poor man's smash factor combine I guess you could say. See pictures of version 2.0 below.

When I get to working on version 3, I will revise my calculations a bit for certain instances and clubs. This will require some beta testing on my part so that will probably be a while.

Please let me know if you want the new version 2.0 with PM and email address. As always, please share your thoughts on its accuracy, if you find any bugs, or if you have an idea for a feature you would like.