Yusuki method center main stretch

[Chappy]

@Irvin,

I was watching your video on the Yusuki method for starting mains. It makes a lot of sense to me too keep the clamps from slipping. Thank you for posting the video. Here should be a link to it.

Let's say you were pulling 60 pounds on both center mains at the same time (which would actually be 30 pounds per string). Then clamp off RM1 at the head and a starting clamp at RM1 on the outside of the racquet throat. Then you pull LM1 at the full 60 pounds and then go back and do RM1 at the full 60 pounds.

My question is will the center two mains play/ hold tension differently than the rest of the mains because they were pulled twice? Or does it not matter because they were not pulled twice at full reference tension?

 

[Irvin]

Let's say you were pulling 60 pounds on both center mains at the same time (which would actually be 30 pounds per string). Then clamp off RM1 at the head and a starting clamp at RM1 on the outside of the racquet throat. Then you pull LM1 at the full 60 pounds and then go back and do RM1 at the full 60 pounds.

Because you wil end up with both clamps of the two center strings they must be staggered using this method I don't use this method any more. If you continue and tension LM2 you will have the both clamps at the top and on a tight pattern again they bump into each other so not I use a starting clamp on the inside of RM2 (usually) and tension RM1, LM1, LM2, then RM2. this way the clamps never bump each other, you tension every string one time only, and I think it is faster.

My question is will the center two mains play/ hold tension differently than the rest of the mains because they were pulled twice? Or does it not matter because they were not pulled twice at full reference tension?

It MAY make a difference but not so you would notice.

 

[Chappy]

That makes sense. I have been clamping the string on RM1 and backing it up with a starting clamp directly behind the clamp. Then tension LM1 and LM2 and go back and tension RM1.

 

[eelhc]

That makes sense. I have been clamping the string on RM1 and backing it up with a starting clamp directly behind the clamp. Then tension LM1 and LM2 and go back and tension RM1.

Same here... The method Richard Parnell uses:

 

[jim e]

I use the Yusuki method for a while. No issues,I like the method as it keeps the anchor clamp straight and upright position nice, but I now use a spacer between frame and starting clamp so starting clamp does not clamp string where it eventually bends and goes through the next grommet holes.
This Yusuki method was published in the USRSA publication a few years back.

 

[SGM1980]

I currently use the exact method in the first video - except that I string "out" once started in a slightly different order, but I'm willing to learn something new if it's better.

Watching the second video, I'm confused about what the starting clamp is doing? Is it just in case the string slips through the machine clamp, or is it doing something else I'm missing?

 

[Irvin]

Watching the second video, I'm confused about what the starting clamp is doing? Is it just in case the string slips through the machine clamp, or is it doing something else I'm missing?

My guess @Richard Parnell is half pulling tension on the main before setting the starting clamp ro keep the clamp up and to put a bit of back pressure on the string he is tensioning. Maybe Richard will respond.

He is a picture of the method I use to start the mains. I use a clothspin as a spacer two protects the grommet and frame before I apply the starting clamp. I use the left side machine clamp to clamp all three mains (RM1, LM1, & LM2.)

After the first thre mains are tensioned I use the right side machine clamp to clamp RM2. This way the clamps never get in each other's way, I can get the clamps as close to the frame as possible, and I don't tension a string twice. Also notice I have a hole drilled in the top of the clothspin slot to keep from pushing in the grommet.

EDIT: I'm not trying to promote my method as better as I think they all work. And this is not my method it was actually introduced to the forum first by @uk_skippy and later by @drakulie. I have modified it a little though.

 

[Rabbit]

My guess @Richard Parnell is half pulling tension on the main before setting the starting clamp ro keep the clamp up and to put a bit of back pressure on the string he is tensioning. Maybe Richard will respond.

If you watch the video, it's apparent he is not "half pulling" tension. The video clearly shows him hand pull both mains, affix the machine clamp and back it up with the starting clamp. He then, for the first time, pulls tension on the main, clamps it and proceeds to string the frame.

If you meant "hand pulling", yes he does, but he completely releases both main strings before activating the tension head; there is no "back pressure". You can see him lift the clamp with his left hand while simultaneously activating the tensioner.

 

[SGM1980]

I love the clothespin! I've often thought that there would be a good way to use the starting clamp on the inside of the racket but I didn't want to crush the grommets. That's very clever.

Can you possibly spell out that technique for me in more detail? I'm sure more experienced stringers would be able to pick up what you're saying, but I'm still a tyro. Does that frame start at the throat or the head - maybe I'm getting mixed up a bit.

If I'm interpreting it correctly, it looks like you clamp the inside of RM2 and then you're saying you pull RM1 and use the opposite side machine clamp? Then pull LM1? But don't you need the left machine clamp for that, too?

I'm so sorry to be so dumb about this, but I'd love to learn this technique! On my stringer with the Yusuki technique I do have some interference of the machine clamps but I just step back the second clamp about an inch away from the frame and ignore the issue completely...

My husband and I both play with wilson steam rackets that start at the throat if that makes a difference in how I would apply this technique.

My guess @Richard Parnell is half pulling tension on the main before setting the starting clamp ro keep the clamp up and to put a bit of back pressure on the string he is tensioning. Maybe Richard will respond.

He is a picture of the method I use to start the mains. I use a clothspin as a spacer two protects the grommet and frame before I apply the starting clamp. I use the left side machine clamp to clamp all three mains (RM1, LM1, & LM2.)

After the first thre mains are tensioned I use the right side machine clamp to clamp RM2. This way the clamps never get in each other's way, I can get the clamps as close to the frame as possible, and I don't tension a string twice. Also notice I have a hole drilled in the top of the clothspin slot to keep from pushing in the grommet.

EDIT: I'm not trying to promote my method as better as I think they all work. And this is not my method it was actually introduced to the forum first by @uk_skippy and later by @drakulie. I have modified it a little though.

 

[MathieuR]

Also notice I have a hole drilled in the top of the clothspin slot to keep from pushing in the grommet.

Good solution Irvin, for a problem that according to some person did not exist in the first place.