the other day, I got a Pink River in the mail, pretty good condition GL, like 8.5/10. I threw it for awhile, and found that it was a lot less stable than the 170g GL I recently put in my bag. Because I am no good at hand comparison of weights, I thought it must've been one of the lighter Rivers I had traded for. When, I got home, I weighed it and it shows 174g on the scale. I thought to myself, must be the PLH, which would make sense, as I had just lost a 172g River that was more stable than both of these. But the PLH is the same.
WEIRD I think to myself...I fiddle with the discs, pondering this problem. Look at them side by side again....and the PLH looks different! Turns out the parting line had not magically changed, but I had rotated the discs. The trimming that the pink river got, ended (or started) deeper. Basically what it amounts to, is that for on average 1/3 of the circumference of the disc's edge, what is meant to be a smooth edge, is actually bevelled for half the height. And the angle and depth of this bevel is different, causing changes in stability out of the box.
It's easier to see in person, but I tried to take some pictures trying to show the issue. I looked at all my lat 64 discs after this, and over half of my 18 latitude drivers have this issue. Including several brand new discs that have never been thrown or been anywhere but the shop I bought it. This included Strikers, Flows, and Visions. The problems seems more pronounced on the Gold Line plastic from newer runs.
The top is obviously the edge where the uneven trimming was done, the bottom left is the discs profile where the trim is the worst, and the right is what the edge should look like.
This is the reply I got...
Hi Arthur,
Thank you for being an observant customer. This is an issue we are aware
of and that has been taken care of by getting a machine to do the flash
removal.
It should make for the most consistent edges in terms of flash removal on
the market.
There will still be some discs out there with the issue you mention and in
some cases it will make the difference in flight you are referring to.
All discs produced from now on will not have this issue though.
Thank you for caring about our discs and please let us know if you have
other feedback in the future.
Svante Eriksson
Sales Manager