Happi is that in the past or present as SG now come in crazy slick finishes unlike gummy offerings of the past
cheapo Head Synthetic Gut PPS 17 black and Babolat Origin 17 are around 0.66-0.77 COF and easily kept slick using tyre shine
Been trying old NOS VS touch black with Origin 17 crosses 60lbsx60lbs with great success and ordering some Rexxxer to see
if these oval offerings can increase durability with Fed string saver locations. Also want to try Gosen Composite Master or some
kind of flat nylon/multi that I read recently in some posts but on japan market. Aim is to keep the NG sliding and not cut by crosses.
| Property | Babolat Origin 17 | Head Synthetic Gut PPS 17 (1.25) | Difference % |
|---|
| Material | Nylon | Nylon | NA |
| Stiffness (lb/in) | 171 | 151 | -12 |
| Tension Loss (%) | 17 | 15 | -12 |
| Energy Return (%) | 94 | 93 | -1 |
| Spin Potential | 6.4 | 6.2 | -3 |
| String to String Friction (COF) | 0.066 | 0.074 | 12 |
| String to Ball Friction (COF) | 0.425 | 0.46 | 8 |