string slipping into drop weight string holder

esgee48

Legend
In reviewing the pictures from the Gamma website/manuals, every representative pull has the string in front of the tension tower. When the string enters from this angle, it is automatically pulled against the lip of the upper cam. If the string is pulled from behind the tension tower, the tension will pull the string away from that lip towards the 'gap.'
 
In reviewing the pictures from the Gamma website/manuals, every representative pull has the string in front of the tension tower. When the string enters from this angle, it is automatically pulled against the lip of the upper cam. If the string is pulled from behind the tension tower, the tension will pull the string away from that lip towards the 'gap.'
At least on my machine, which has the problem, starting the pull with grommet on the outside of the magic plane does nothing to help solve the problem.

I wonder if the red cams are different and defective? Does everyone with this problem have the red one? The blue one looks different.
 
My blue cam eats strings constantly.

And yes, I've even tried to rotate the racket so the string exit grommet is angled towards the outer ridge
but string still slips into the inner gap.

All this talk about adjustment is nonsense.
There is ONE allen bolt.
Tighten it to the point it freezes
Then back it out however much you want, a lot or a little
does not matter, I've tried all tightness levels

It is a design flaw
and the photo says it all

There is a gap.
String goes into gap.
 
@stapleton

Your best bet is to throw the drop weight into the trash
and buy a used electronic stringer.

That is exactly what I have done.
 

bfroxen

New User
I tightened it. but the gap is still there.

one other thing I noted is that the blue "cams" look slightly different on the bottom than my red ones......
If the gap is still there after tightening the screw, there must be something stuck inside and holding the gap open. Look at my photos here. Remove all four screws and see what's causing your problem. If you don't find anything, post similar photos, so we can see what's different.

BTW, I have both blue and red ones, and both work fine.
 
This thread is going nowhere. The folks whose machines don’t have this defect don’t seem to be able to understand that the defect is not something that can be adjusted out or fixed with technique. It’s simply a bad design that has a high defect rate.
 

Irvin

Talk Tennis Guru
This thread is going nowhere. The folks whose machines don’t have this defect don’t seem to be able to understand that the defect is not something that can be adjusted out or fixed with technique. It’s simply a bad design that has a high defect rate.
Someone did LOL but bfroxen posted it in another thread. I think you id’ed the problem accurately. The top portion of the gripper wants to tilt inward as tension is pulled. I was going to take mine apart and look but have had no time. I did try tensioning a string and mine does not tilt as tension is applied so the string won’t slide inward. Gamma Tech gave a few suggestions cleaning and adjusting which always helps but it should also help one understand the problem. Someone who has an issue should take theirs apart and give it a good cleaning. It can’t hurt and may help others with the issue fix their problem. One only has to remove 4 screws to remove the gripper assembly and it can’t take more than a minute.
 
Mine does not tilt.
That is not the issue for mine.

Cleaning has nothing to do with it.

Inherent in the design.
When you tension the string, it is going to try to move laterally.
50% of the time, it moves towards the gap and gets snagged.
 

stapletonj

Professional
Mine does not tilt.
That is not the issue for mine.

Cleaning has nothing to do with it.

Inherent in the design.
When you tension the string, it is going to try to move laterally.
50% of the time, it moves towards the gap and gets snagged.
bingo. when the upper part of the cam squeezes down, the gap appears, it is not a tilting issue.
 
I’ve had this issue as well, and found a work around that has worked 100% of the time for me, but I guess it depends on the state of your machine if it will work for you.

When placing the string into the gripper, I try to rotate it into the same position every time, so that the string gap is vertical and the “fat” part of the gripper assembly is to the left. I wrap the string to be tensioned over the top of the gripper, around the bottom, then feed the string down thru the vertical gap.

When feeding it thru, I try to get a firm hold of the loose end of the string from the bottom as I begin to drop the arm to tighten the gripper and I watch the projected area that the string still connected to the frame will fall as I begin to drop the weight. Then, with the string in the gripper serving as a “divider”, I start to drop the weight while pulling the string connected to the frame a little towards myself, such that the string being wound onto the gripper ends up laying on the side “away from the gap” with regards to the part of the string that’s already pinched in the gripper.

Since I started using these methods on my Gamma drop weight, the string hasn’t gone “into the gap”, but I do remember it doing so plenty of times before I was paying any attention to how the string fed into to gripper and/or how the string would orient itself with regards to laying close or away from the gap as the string was wound around the tensioner. Hopefully, this solves the issue for you guys as well.

Edit - (Pics now available below!)

Initial Orientation of Gripper:



Feeding String into Gripper (pull the string attached to the frame towards you as you drop the arm - note the "divider" the gripped part of the string serves as):


Once the gripper arm has dropped a bit, make sure the part of the string attached to the frame is wrapping on the side of the "divider" away from the gap. The part of the string being held by the gripper blocks the string from sliding "into the gap":
 
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I do something similar.
I try to angle the racket away, so the string is pushed against the outer ridge.
I also push the string closer to the middle with my fingers as I tension drop
 

bfroxen

New User
@TimeToPlaySets, since there's been no response from @stapletonj, would you remove the four screws from yours and take some photos like the ones I posted in the other thread? I'd like to help you guys figure this out. Perhaps there was a design change. I literally can't get a string stuck in mine.
 

Irvin

Talk Tennis Guru
@TimeToPlaySets, since there's been no response from @stapletonj, would you remove the four screws from yours and take some photos like the ones I posted in the other thread? I'd like to help you guys figure this out. Perhaps there was a design change. I literally can't get a string stuck in mine.
Mine looks exactly the same as yours except I cant get mine to lay like yours without the springs popping out.
 
OK - so pics now available for people who were interested in what I posted in a lot of words, but would have just been 20X easier to show you:

Avoid the deadly "GAP" on your Gamma Dropweight Stringer using these tips.

Initial Orientation of Gripper:



Feeding String into Gripper (pull the string attached to the frame towards you as you drop the arm - note the "divider" the gripped part of the string serves as):


Once the gripper arm has dropped a bit, make sure the part of the string attached to the frame is wrapping on the side of the "divider" away from the gap. The part of the string being held by the gripper blocks the string from sliding "into the gap":
 
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jim e

Legend
When someone tells me they threw it in the trash , I would take it that it stayed in the trash. As you said it was garbage.
So you sold a machine that was not working properly to someone. That's great.
 

mad dog1

G.O.A.T.
When someone tells me they threw it in the trash , I would take it that it stayed in the trash. As you said it was garbage.
So you sold a machine that was not working properly to someone. That's great.
Nice try. That would be logical but ttps isn’t logical nor does he understand logic.
 
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stapletonj

Professional
I strung one yesterday.. the string almost went into the dreaded gap a couple of times, but I successfully avoided it. I will try these two tips, although I think they will slow even an experienced stringer. (which I am most assuredly not)

the vertical orientation tip is a new one. I will try that next time.

PS - does anyone know if the mechanics under the 4 cam bolts are spring loaded with parts that will fly out, fall out, etc. ?
Somebody asked me to take the bolts and cams off and post pics, I am scared to do this because it may well take me months to put it back together given my general ham-handedness.
 

bfroxen

New User
PS - does anyone know if the mechanics under the 4 cam bolts are spring loaded with parts that will fly out, fall out, etc. ?
There are the two colored parts you can see (blue or red), the four bolts, and two springs that you can't see. It's very obvious where the springs go and easy to assemble.
 

Irvin

Talk Tennis Guru
I strung one yesterday.. the string almost went into the dreaded gap a couple of times, but I successfully avoided it. I will try these two tips, although I think they will slow even an experienced stringer. (which I am most assuredly not)

the vertical orientation tip is a new one. I will try that next time.

PS - does anyone know if the mechanics under the 4 cam bolts are spring loaded with parts that will fly out, fall out, etc. ?
Somebody asked me to take the bolts and cams off and post pics, I am scared to do this because it may well take me months to put it back together given my general ham-handedness.
Mine flew out but there is no problem getting it back together
I strung one yesterday.. the string almost went into the dreaded gap a couple of times, but I successfully avoided it. I will try these two tips, although I think they will slow even an experienced stringer. (which I am most assuredly not)

the vertical orientation tip is a new one. I will try that next time.

PS - does anyone know if the mechanics under the 4 cam bolts are spring loaded with parts that will fly out, fall out, etc. ?
Somebody asked me to take the bolts and cams off and post pics, I am scared to do this because it may well take me months to put it back together given my general ham-handedness.
 

stapletonj

Professional
I took the "cam" off and noticed the little tiny metal washers on some of the bolts but not others.
Is that normal?
Also, I note that the two small plastic "guides" that fit into the upper part of the cam and extend down into the slots on the lower side of the cam have broken.
specifically it looks like the small tabs that fit them into the upper part of the cam are snapped off.

Does anyone know if they will sell the plastic parts individually, etc.? I notice that the manual says the whole outer cam assembly is one big part on their exploded diagram,
but they don't say anything on the website about how much, etc.
 

bfroxen

New User
Perhaps you are calling the threaded inserts washers. The three bolts that hold the larger, fixed portion thread into metal inserts. The bolt that holds the moveable part is threaded into plastic.

It's unfortunate that your parts are broken, but hopefully the replacement part cost will be reasonable, and your problem will be fixed. I wonder what caused those parts to break. Got any photos?
 

esgee48

Legend
Gamma Sports will have the parts or the entire assembly. Contact them or @Gamma Tech. cad@gammasports.com or john.matechen@gammasports.com are 2 addresses you could use.

Refer him to post #77 above or send photos so they can see what happened. Your assembly is damaged. And if you had taken it apart when asked many posts ago, you would have seen it rather than futz around.
 
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Irvin

Talk Tennis Guru
I took the "cam" off and noticed the little tiny metal washers on some of the bolts but not others.
Is that normal?
Yes, the three threaded inserts are for the lower portion of the drum
Also, I note that the two small plastic "guides" that fit into the upper part of the cam and extend down into the slots on the lower side of the cam have broken.
specifically it looks like the small tabs that fit them into the upper part of the cam are snapped off.
Those don’t fit into the top portion they are part of it.
Does anyone know if they will sell the plastic parts individually, etc.? I notice that the manual says the whole outer cam assembly is one big part on their exploded diagram,
but they don't say anything on the website about how much, etc.
Unfortunately you can’t just buy part of the composite string gripper you’ll need to buy the complete part.
https://gammasports.com/products/tennis/stringing-tools-parts/parts/composite-string-gripper/
 

Wolfie1

New User
I wonder if the red cams are different and defective? Does everyone with this problem have the red one? The blue one looks different.
Yes, I've got the red, which is the 'Progression' line as opposed to the X-2 (blue) line. I don't have any of the problems mentioned about this gap. Go figure. You'd think they'd be exactly the same (besides color), and the only difference would be the base.
 
Trust me, toss it into the trash, or sell it. Don't waste another minute on this nonesense.
Not worth the hassle. Look for a used CP machine.
Once you get an electronic machine, you will slap your forehead for jerking around with a fake toy chump DW stringer.
 

stapletonj

Professional
OK, apparently I can post links but not pictures. who knows maybe too much bandwith, I dunno.

This link should be to the picture where the two "sticks" seem to have a protrusion "post" that goes into the upper cam. It appears these "posts" have snapped off, leaving their protrusions in the upper cam.

Before I spend $45.00 on a piece that should cost $5.00, I'm going to try some superglue to see if I can glue the "sticks" back into place.

https://photos.google.com/photo/AF1QipOoeCXS0km6NzQVd2iomeBr4v7cKw-NlJwbi9cx
 
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