Got the speed

[bunkerputt]

I've been working on a much later wrist set, and letting my fall from the top set my wrists a bit. This brought a huge speed boost, so I had to chang my grip slightly stronger to allow me to close the clubface (used to, the "V" pointed at my nose, now it points just outside my right ear). The main things I've been focusing on are making sure I start the downswing while everything is still moving back a bit, and trying to preserve the pressure between my left arm and pec until late in the downswing. On camera, my wrist set timing used to mirror Ernie Els', but with these changes, it's closer to what Tiger is doing. Just doing those things has made my driver swing speed jump by 10mph. I know that this is definitely a faster way to swing, but I'm concerned about what I need to look out for. I already know a biggie is that I tend to lose my spine angle, the harder I go at it, but I haven't really had to change the amount of effort I exert on a swing. It still feels like I'm at between 85-90%, so it really doesn't "feel" hard to me. I've always thought that a downswing wrist cock made it tough to control distance, particularly when you are amped a bit. At what point is there too much speed in a technique here?

I'm also somewhat concerned that my shaft profile really isn't going to fit me anymore. I've used the 77 gram UST Proforce V2 in S which has a torque rating of something like 2.1. That shaft definitely feels whippier to me than my 3-wood which is 85 grams at a torque of 1.9. I don't want to spend a lot of money changing out shafts, but I'm guessing that I'd need to do at least that for my driver if I keep up with these changes. Has anyone gone through something like this?