Well, they've been using fixed clamps for a LONG time. The Ektelon/Prince has been around for ages
and I'm sure the big boys have been using fancier machines for a few decades at least.
If you mean back.....WAY back, ......there are plenty of methods to start and string with floating clamps/
starting clamps (I'll admit, I haven't done it in 30+ years so i'd have to cipher through it again).
Yup, I am just very curious to know how they start stringing the crosses (1 piece(aka 2 knots))
I learnt how to string a racquet(fixed clamp) from a mentor, but know nuts about stringing a racquet with floaties.
My jaws dropped when they ( YouTube videos) pull the first and second cross (or mains) simultaneously. I mean.. What?
Wouldn't the first two crosses(or mains) be of a lower tension as compared to the 3rd, 4th, 5th cross?
Of course, drop weights (fixed clamps) will not have such problems... Ha.
So I mean.. If Rod Laver asked for 65lbs tension for his AO open 1960 championship match, how does the stringer ensure every strand of string was pulled at 65lbs before clamping?
If you were asking how one could start the crosses on a 1 piece job with only "flying clamps", you can use a piece of "scrap string" on the other side of the flying clamp from cross #1 to simulate a 2nd string to fill the clamp. Assuming you have the clamp set to the proper tightness, the mains usually "back up" the flying clamp fairly well on crosses, and I have started crosses this way without slippage on a 1 piece job w flying clamps.
That said, there's probably a bit more drawback than usual doing it this way since the scrap string provides no anchor so the outer main is being stressed more than usual. Probably no big deal, but given a choice, I'd just always go 2 piece if i was stuck using flying clamps and looking to be consistent, accurate, and nice to the strings.
Also, crazy as it may seem, I find that flying clamps are a bit easier to use doing crosses than fixed clamps, while I would never want to use flying clamps on mains. Just feels quicker to get on and off compared to moving between the 2 fixed clamps and locking/unlocking the clamps & bases.
Just wondering, how the stringers in past string the racquet at grand slams, using drop weight or crank to deliver string job as precise as possible.
If you hunt arround, there is a video on youtube of an old stringer, using and showing how he strung the wood rakets using the "hand dowels",,, it was nice to see...
Awl.... The most useful tool but requires very nimble hands. HahahI do not know how long you want to go back in the past.
But lets go back to wooden rackets, 18 length 20 crosses, to be strung with natural gut, in 2 piece. 6.7 and 3.4 meters, in some cases without coating. And just using you hands and a hook to pull the lengths strings. Then do the crosses one by one, not the most easy waving with the gut and very dense pattern. Use the awl to lock down the string.
So no floating or fixed clamps and being able to string on half kg accurate, and 3 in an hour.
Peter
Awl.... The most useful tool but requires very nimble hands. Hahah