kneelingatlas Posted March 11, 2015 Share Posted March 11, 2015 I want to share some interesting observations about the slide stroke of my different Open guns. As some of you might know I have a few different Open pistols including CZs, Tanfoglios and 2011s in both 9 and 38 as well as an insatiable urge to tinker So when I first heard about pistols with increased slide stroke, I just had to try it The design of the Tanfoglio Hunter lends itself to experimentation in this way because the slide impacts a block at the base of the guide rod rather than the frame at the rear of the stroke so all I had to do was cut it: Update on the 6": I stroked it!0.134" increased stroke, I'll give a range report once I get around to loading some 40 This let's me change the stroke by simply changing the guide rod. This easy comparison led me to conclude that there is a tangible softening of the recoil to be gained by this modification; logically, there should be a longer lock time to the cycle as a tradeoff, but I could not detect it. I have not yet done any time trials side by side to see if the softer feel translates into higher scores, but those will come someday Naturally this got me thinking about stroking all the time I couldn't help but think it would be a great way to mitigate the snap of an Open gun with a short barrel/lots of holes/light slide/etc so I started studying all my Open guns and planning.I first assumed the large frame CZ75 pattern pistols would have a longer stroke than the small frame pistols, but the calibers proved me wrong, they're the same; then I noticed the 2011s by design had a longer stoke than the CZ75s: 1.875" vs 2.115", so right out of the gate that's 0.240" difference and "stroked" 6" still had a shorter stroke than a stock 2011!The next step is to see if there's something to the design making it not need such a long stroke, i.e., will stroking a CZ by 0.440" cause it to feel sluggish or lopey?Again I will go back to the Hunter since the stroking is reversible and the only thing at risk is a guide rod. I had heard Akai say his stroked guns had an additional 0.2" of stoke, but I stopped at 0.134" with my Hunter because I was running out of the fat part on the guide rod and didn't want a smaller diameter block to impact the slide, so to get more stroke I plan to cut a section out of the middle of the block and weld it back together again.Stay tuned... Link to comment Share on other sites More sharing options...
bmiller Posted March 11, 2015 Share Posted March 11, 2015 Thanks Atlas! Link to comment Share on other sites More sharing options...
DRichardson Posted March 11, 2015 Share Posted March 11, 2015 I would be a little worried about welding a guide rod that take the recoil from the slide. Wouldn't it be easier to turn a new rod from round stock in the dimensions you want? Something that small shouldn't be a lot to have machined. Link to comment Share on other sites More sharing options...
kneelingatlas Posted March 11, 2015 Author Share Posted March 11, 2015 I'm not worried about it, it only get compression force and no more than a rubber buffer, plus if it cracks I'll make a new one Link to comment Share on other sites More sharing options...
JMike Posted March 11, 2015 Share Posted March 11, 2015 Fascinating! Look forward to reading more. Link to comment Share on other sites More sharing options...
kneelingatlas Posted March 11, 2015 Author Share Posted March 11, 2015 I would be a little worried about welding a guide rod that take the recoil from the slide. Wouldn't it be easier to turn a new rod from round stock in the dimensions you want? Something that small shouldn't be a lot to have machined. It just occurred to me you probably don't know how a Hunter guide rod is made, so you don't have the same picture in your head as I do; it's made from two pieces: the rod and the block. There's a pin keeping the two together so I just punch the pin, slide the rod out, cut the block and put the rod back in. Link to comment Share on other sites More sharing options...
Open1215 Posted March 12, 2015 Share Posted March 12, 2015 What open gun are you stroking??? Link to comment Share on other sites More sharing options...
kneelingatlas Posted March 12, 2015 Author Share Posted March 12, 2015 What open gun are you stroking??? The first is my 6" Limited Tanfo, a small frame Tanfo Open gun, then my Y7 Good Team. Link to comment Share on other sites More sharing options...
Open1215 Posted March 12, 2015 Share Posted March 12, 2015 I know the hunter 40 worked great I can't wait to see how it goes w the y7 or the small frame! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now