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King Geoffrey


Joined: 08 Dec 2013
Posts: 1969
Location: On the green

PostPosted: Wed Jun 10, 2015 8:23 am    Post subject: Visual Stability Check Reply with quote

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Holly D
Overflow Overlord


Joined: 17 Jul 2010
Posts: 4302
Location: Ottawa

PostPosted: Wed Jun 10, 2015 1:46 pm    Post subject: Reply with quote

This is very helpful.
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Chuck Shick
Plaid Jacket Champion


Joined: 05 Sep 2000
Posts: 1897
Location: Chelsea

PostPosted: Thu Jun 11, 2015 11:03 am    Post subject: Reply with quote

I find throwing them also helps big grin
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Ken Darcovich
GOAT Champion


Joined: 14 Jun 1999
Posts: 2611
Location: Ottawa

PostPosted: Thu Jun 11, 2015 11:45 am    Post subject: Reply with quote

Chuck Shick wrote:
I find throwing them also helps big grin


I'm not a rich man.

I'm taking this info as savvy shopper tips.
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Bart Bird
New Golfer


Joined: 11 Jun 2015
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PostPosted: Thu Jun 11, 2015 2:18 pm    Post subject: Reply with quote

Here's a quick video that shows the same concept and explains why this happens, even with discs in the same mold made from different plastics: Impact of Plastic Type on Disc Stability
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Bart Bird
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Ken Darcovich
GOAT Champion


Joined: 14 Jun 1999
Posts: 2611
Location: Ottawa

PostPosted: Thu Jun 11, 2015 5:32 pm    Post subject: Reply with quote

There was one explanation in the video which is curious.

It was stated that wear on a disc will appreciably change the general shape and profile characteristics that are presented in the video. I haven't compared any new and used models of the same disc to see if this seems to be occurring. This can be sometimes be noticed with low-end non-elastic deformable plastics like DX, and was the downfall of QK discs from the UK, but I am skeptical that this would be the case with Champion or Z-elite type plastics.

What is understood, is that the edges become blunter after many impacts, and the surface roughness increases from impact, dirt and handling, and consequently the drag in flight that the disc experiences increases, leading to less stability.

One takeaway from all this, is there will be intrinsic disc to disc variation for same weight/plastic/model discs if there is any variation in temperatures of the molds, how long the disc was allowed to cool before removing it, ambient temperature of the factory, even things like different dyes and tints are understood to modify the plastic properties that account for its ultimate fully formed profile.

In my experience, Innova products seem to have the highest variability. All characteristics being the same, two Innova discs seem far more liable to differ than ones from other manufacturers.
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