need help to reduce rotation drag of my turntable on gamma 602fc

taurussable · Jan 25, 2013

I strung about 10 racquets on my 602fc since I bought it June last year new. The friction of the center post of the turntable has come to a point that I feel I can't stand it anymore. so I pulled out the turntable, put some grease accumulated at the bottom of the post back to the turntable bushing. It didn't help. The weight of the machine itself can't stop the base from moving when I rotate the turntable. I already took out the set screw that is used to increase friction.

I'd like to know if other gamma 602fc users have similar experiences. Or does anyone know any magic grease that can reduce the drag on my machine?

reference:
http://tt.tennis-warehouse.com/showthread.php?t=444168

Lakers4Life · Jan 25, 2013

What kinda of grease are you using? I would recomend a lithium based grease or Teflon (PTFE) grease. There is Teflon based grease called, Grease Lightining, that can be found at most bike shops or REI.

taurussable · Jan 25, 2013

Lakers4Life said:
What kinda of grease are you using? I would recomend a lithium based grease or Teflon (PTFE) grease. There is Teflon based grease called, Grease Lightining, that can be found at most bike shops or REI.

some grease accumulated at the bottom of the center post. it came with the machine out of factory. I put it back into the bushing but no help. it seems too viscous. I'll try ur stuff. I assume I need clean the bushing and center post thoroughly before using a new grease?

Lakers4Life · Jan 25, 2013

taurussable said:
some grease accumulated at the bottom of the center post. it came with the machine out of factory. I put it back into the bushing but no help. it seems too viscous. I'll try ur stuff. I assume I need clean the bushing and center post thoroughly before using a new grease?

Wipe off the old grease and clean with Alcohol. Then lightly coat the post and the bushing with the Teflon grease.

diredesire · Jan 25, 2013

taurussable said:
I strung about 10 racquets on my 602fc since I bought it June last year new. The friction of the center post of the turntable has come to a point that I feel I can't stand it anymore. so I pulled out the turntable, put some grease accumulated at the bottom of the post back to the turntable bushing. It didn't help. The weight of the machine itself can't stop the base from moving when I rotate the turntable. I already took out the set screw that is used to increase friction.

I'd like to know if other gamma 602fc users have similar experiences. Or does anyone know any magic grease that can reduce the drag on my machine?

reference:
http://tt.tennis-warehouse.com/showthread.php?t=444168

Wait... do you want to INCREASE or decrease the drag? It sounds like from "can't stop the base from moving" that you want to increase drag. If so, you should be using a heavy grease, I hear kilopoise is a good one. I haven't tried this myself, but I actually find my 5800 to rotate too freely. I actually have to lock my turn table down to keep weaving at a reasonable pace. The older Gamma machines didn't have this issue...

taurussable · Jan 25, 2013

Lakers4Life said:
Wipe off the old grease and clean with Alcohol. Then lightly coat the post and the bushing with the Teflon grease.

Sounds good! Thanks!

taurussable · Jan 25, 2013

diredesire said:
Wait... do you want to INCREASE or decrease the drag? It sounds like from "can't stop the base from moving" that you want to increase drag. If so, you should be using a heavy grease, I hear kilopoise is a good one. I haven't tried this myself, but I actually find my 5800 to rotate too freely. I actually have to lock my turn table down to keep weaving at a reasonable pace. The older Gamma machines didn't have this issue...

decrease... the friction is so much now that I can't even let the turntable rotate without moving the base of the machine. basically the feet of the machine moves before the turntable starts to rotate..

Lakers4Life · Jan 25, 2013

taurussable said:
decrease... the friction is so much now that I can't even let the turntable rotate without moving the base of the machine. basically the feet of the machine moves before the turntable starts to rotate..

That sounds like something is binding. Possibly a factory defect. I had a X-6FC and it turned easily.

taurussable · Jan 25, 2013

Lakers4Life said:
That sounds like something is binding. Possibly a factory defect. I had a X-6FC and it turned easily.

the center post and the bushing look fine to me. they are pasticky though. the friction is greatest at a certain angle and locks up. I guess the shaft and the bushing are not round enough. well I can't expect too much from a $500 machine. hopefully a good lube fixes it.

Faithfulfather · Jan 25, 2013

There is an adjustment screw on the turntable shaft. Maybe it is too tight.

taurussable · Jan 25, 2013

Faithfulfather said:
There is an adjustment screw on the turntable shaft. Maybe it is too tight.

i already took out the screw..

diredesire · Jan 25, 2013

taurussable said:
i already took out the screw..

sounds like you should take it apart and post pics. also shoot an e-mail to cad@gammasports.com to get John in this thread. I'd send him a link if i were you

taurussable · Jan 25, 2013

diredesire said:
sounds like you should take it apart and post pics. also shoot an e-mail to cad@gammasports.com to get John in this thread. I'd send him a link if i were you

video showing stringer moves when I push my turntable, too much friction

http://youtu.be/XqLpugYUSyA

pictures of center post and bushing

If you guys think the level of friction is not normal, I'll ask John about it..

taurussable · Jan 25, 2013

the screw in the video is the set screw I took out. it's use is to increase friction. I took it out to minimize friction.

Faithfulfather · Jan 25, 2013

147B67A6-25DC-44ED-936F-BA52480BE722-2120-000000F3A8A940E3.mp4

Faithfulfather · Jan 25, 2013

http://i24.photobucket.com/albums/c...D-936F-BA52480BE722-2120-000000F3A8A940E3.mp4

My X-6FC turns much easier. It still has the set screw installed.

taurussable · Jan 25, 2013

Faithfulfather said:
http://i24.photobucket.com/albums/c...D-936F-BA52480BE722-2120-000000F3A8A940E3.mp4

My X-6FC turns much easier. It still has the set screw installed.

yours definitely looks much nicer

Lakers4Life · Jan 25, 2013

Something is definitely snagging. If this is a new machine it's still under warranty. I would replace the bushing and the post just to be sure.

Does the post hit the table?

The clamps look like the old black plastic clamps. Is this a new machine?

taurussable · Jan 25, 2013

Lakers4Life said:
Something is definitely snagging. If this is a new machine it's still under warranty. I would replace the bushing and the post just to be sure.

Does the post hit the table?

you mean the center post? no. it is an inch away from the table. will ask gamma about it Thanks!

taurussable · Jan 25, 2013

filed service request here
http://www.gammasports.com/contact_stringing_machine_service.cfm
and
emailed
cad@gammasports.com about the situation and this thread.

Thank you all for helping!

Lakers4Life · Jan 25, 2013

You also try calling on Monday. John has been real helpful, and since you are in the East Coast you should get the parts in a couple of days.

taurussable · Feb 1, 2013

new bushing solved issue. fast turnover. kudos to gamma.

diredesire · Feb 1, 2013

taurussable said:
new bushing solved issue. fast turnover. kudos to gamma.

Nice, glad to hear you got the support you needed.

Lakers4Life · Feb 1, 2013

taurussable said:
new bushing solved issue. fast turnover. kudos to gamma.

Did they charge you or was it still under warranty?

You should of called them in the first place.

taurussable · Feb 1, 2013

Lakers4Life said:
Did they charge you or was it still under warranty?

You should of called them in the first place.

it is half year old machine

just wanted to make sure my problem was indeed a problem

Lakers4Life · Feb 1, 2013

Was the bushing bad or the post?

taurussable · Feb 1, 2013

Lakers4Life said:
Was the bushing bad or the post?

the bushing was bad. it is plastic. post is steel so held up really well.

Lakers4Life · Feb 1, 2013

I tought it was metal like other machines.

struggle · Feb 6, 2013

I've had two string clamps and one swivel clamp replaced by Gamma.

Great customer service, very accommodating.

Lakers4Life · Feb 6, 2013

tbuggle said:
I've had two string clamps and one swivel clamp replaced by Gamma.

Great customer service, very accommodating.

You machine is newer than mine, and I've yet to have anything break down. (knock on wood)

struggle · Feb 6, 2013

Lakers4Life said:
You machine is newer than mine, and I've yet to have anything break down. (knock on wood)

just unlucky, i think. i really like the machine, just think i got a bad run of parts, primarily the string clamps exploded at the bearings.

swivel clamp was just kinda crunchy (1) and didn't have that sweet "switch action" after a while, didn't "snap" on and off. it still worked ok.

Lakers4Life · Feb 6, 2013

I've pretty much been using Eagnas PN-1012 clamps on my 6004, as well as the Dual clamps that look like the currently shipped Gamma clamps (like yours). My Dual clamps, don't have the bearings like yours does.

Someone told me Prince, Gamma and Alpha get thier current clamps from the same manufacturer. I think the new Alpha Ghost and Phnatom have the same clamps.

struggle · Feb 6, 2013

Lakers4Life said:
I've pretty much been using Eagnas PN-1012 clamps on my 6004, as well as the Dual clamps that look like the currently shipped Gamma clamps (like yours). My Dual clamps, don't have the bearings like yours does.

Someone told me Prince, Gamma and Alpha get thier current clamps from the same manufacturer. I think the new Alpha Ghost and Phnatom have the same clamps.

had the PN-1012 on my 910. They were fine and no bearings as i recall.
What are the Dual clamps you speak of? Eagnas model? If so I don't see them, their website is so convoluted.

Lakers4Life · Feb 6, 2013

The Dual Clamps I got from Arfaian for less than $70 shipped. I got them to use for badminton, but they work great for tennis. They look like your clamps, but without the bearing.

need help to reduce rotation drag of my turntable on gamma 602fc

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