full poly to gut/poly tension conversion

[taurussable]

one reason i switched to full poly from gut/poly recently is i messed up the gut/poly tension on two rackets and both didn't feel right. it is expensive so i tend be careful to experiment.

Now i want to go back to gut/poly with correct tension.


I found 47/47 full poly to be pretty good for me now. Will 49gut/49poly roughly equal the power of 47/47 full poly?

I'll keep the cross and main tension the same to be simple.

 

[BlueB]

I play 50/40 poly and 60/40 gut/poly. I guess it could be averaged to about 46/46 poly and 52/52 gut/poly. However I think it's wrong to string gut/poly at same tension. ..

 

[taurussable]

I play 50/40 poly and 60/40 gut/poly. I guess it could be averaged to about 46/46 poly and 52/52 gut/poly. However I think it's wrong to string gut/poly at same tension. ..

that's 6lbs difference if main and cross strung at the same tension, that's huge.

my racket can't sustain 10lbs difference. even 2lbs differential will shorten the hoop slightly.

 

[BlueB]

Yes at 20 lbs differential I get about 3 mm shortening. Doesn't bother me.

6 lbs from softest to stiffest setup to equalize the power sounds almost insufficient, IMO.

 

[Deleted member 369227]

I'm not an expert in stringing but from the pure laws of physics standpoint I think that tensions between mains and crosses will not stay the same after you unmount the racquet from stringing machine, particularly if the tension difference is significant.

For example, if you string mains at 60lbs and crosses at 55lbs, after you remove the racquet from stringer, the tension difference will cause mains to become slightly looser and crosses to become slightly tighter until equilibrium is reached, somewhere between their tensions while the racquet was firmly fixed on the stringing machine.

Am I right?

 

[taurussable]

I'm not an expert in stringing but from the pure laws of physics standpoint I think that tensions between mains and crosses will not stay the same after you unmount the racquet from stringing machine, particularly if the tension difference is significant.

For example, if you string mains at 60lbs and crosses at 55lbs, after you remove the racquet from stringer, the tension difference will cause mains to become slightly looser and crosses to become slightly tighter until equilibrium is reached, somewhere between their tensions while the racquet was firmly fixed on the stringing machine.
I right?

you are right. also even if you string both main and cross at the same tension, the cross will be a lot looser due to friction when you pull. that's why I think lowering cross 2lbs is not very significant.

 

[sm01]

Will 49gut/49poly roughly equal the power of 47/47 full poly?

You used to use gut poly, what felt good?

I changed from poly/poly (RPM Blast 18) to gut poly, Pacific Classic17/RPM 18, and now Klip Legend 17/K-Boom 17--because it has a more poly-like crispness, and think that its pretty comparable power wise to full RPM--nicely linearly controllable.

Re equivalence tensionwise, I recommend that you consult the RSI string tension ratings for the strings you're going to use.

If you use a soft poly in the RSI stiffness range under 200 generally, like a Black Widow 17 or 18 or equivalent, I'd say 49# gut to 47# poly is a couple of pounds too low--I'd recommend 51#. If the RSI is in the mid 200s, like a BHBR 17, Id say try 53#. If you are in the high RSI range for the poly, like an RPM Blast, I'd go 55# on the gut--so about 8# up.

I'll keep the cross and main tension the same to be simple.

Re tension differential, I'm with the others, I think the poly cross should be lower. I recommend 4-6# lower as a general rule.

If you haven't tried it, I have found Klip Legend to be an excellent replacement for poly, due to its marginally greater crispness compared to Pacific and particularly the others.

PLS, PLS, PLS--report back--I am curious.

 

[struggle]

i go 56/54 in the same frame (16g gut m/17L poly cross)

i have thought about going lower but it just works for me and i
don't jack around with my setup much.

 

[taurussable]

Re tension differential, I'm with the others, I think the poly cross should be lower. I recommend 4-6# lower as a general rule.

If you haven't tried it, I have found Klip Legend to be an excellent replacement for poly, due to its marginally greater crispness compared to Pacific and particularly the others.

PLS, PLS, PLS--report back--I am curious.

alright lets make it simple

i find volkl v-pro 18g at 47/47 to be good.

now I am using prince gut 16g with volkl v-pro 18g. you think 51 gut main/51 poly cross will be same power potential as full bed v-pro 18g at 47lbs?

 

[taurussable]

i go 56/54 in the same frame (16g gut m/17L poly cross)

i have thought about going lower but it just works for me and i
don't jack around with my setup much.

this sounds pretty high but it may just be like that.

 

[oble]

I read somewhere the rule of thumb is for the Gut and soft synguts/multis to be about 4 lbs higher than the poly.

If you do 47 lbs on full bed of poly, I'd say gut/poly at 51/47 is a good starting point.