DGR Homework: parting line height and relative stabilities

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Re: DGR Homework: parting line height and relative stabilities

Postby marmoset » Wed Jan 20, 2010 10:46 am

Another question:
To those who have flattened their Rocs using Sleepy's boiling water method, has it affected PLH? In my head I can see it going either way.

I will try this soon but I was wondering what to expect.
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Re: DGR Homework: parting line height and relative stabilities

Postby Frank Delicious » Wed Jan 20, 2010 10:59 am

I've fixed a couple of wizards that had clovered funky with the boiling water and it didn't change the parting line in any significant way. I haven't done it to any rocs though because I like some dome on my rocs but I might try it on a domey core I'm getting from Disc Junkie and will see if it does anything to it.
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Re: DGR Homework: parting line height and relative stabilities

Postby Jeronimo » Wed Jan 20, 2010 12:09 pm

Wait, so the boil method really works? The disc re-cools with a flatter top?
I am dumb.

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Re: DGR Homework: parting line height and relative stabilities

Postby Frank Delicious » Wed Jan 20, 2010 12:30 pm

I fixed a lot of discs by turning them upside down and putting hot water in them until the top get soft, draining it, and then filling the disc with marbles or ball bearings to fix bad clovering or other stuff. I don't see why it wouldn't work to flatten a disc.
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Re: DGR Homework: parting line height and relative stabilities

Postby marmoset » Wed Jan 20, 2010 1:15 pm

I have a brand new DX Roc that I will try this on tonight.
I will take measurements before and afterwith my trusty dial calipers and report the results.
Golf is a lot of walking, broken up by disappointment and bad arithmetic. ~Author Unknown
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Re: DGR Homework: parting line height and relative stabilities

Postby Jeronimo » Wed Jan 20, 2010 2:06 pm

marmoset wrote:I have a brand new DX Roc that I will try this on tonight.
I will take measurements before and afterwith my trusty dial calipers and report the results.


I eagerly await the results of your experiment.
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Re: DGR Homework: parting line height and relative stabilities

Postby marmoset » Wed Jan 20, 2010 3:20 pm

Jeronimo wrote:
marmoset wrote:I have a brand new DX Roc that I will try this on tonight.
I will take measurements before and afterwith my trusty dial calipers and report the results.


I eagerly await the results of your experiment.


I am rescheduling my test for tomorrow night because I want to get accurate before-and-after weights. My super accurate scale is at work.
Golf is a lot of walking, broken up by disappointment and bad arithmetic. ~Author Unknown
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Re: DGR Homework: parting line height and relative stabilities

Postby chiggins » Wed Jan 20, 2010 3:59 pm

Someone oughta change your rank to "Calipers of Triumph"
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Re: DGR Homework: parting line height and relative stabilities

Postby Timko » Wed Jan 20, 2010 4:02 pm

Frank Delicious wrote:I've fixed a couple of wizards that had clovered funky with the boiling water and it didn't change the parting line in any significant way. I haven't done it to any rocs though because I like some dome on my rocs but I might try it on a domey core I'm getting from Disc Junkie and will see if it does anything to it.


These are the ones I sent you I assume?
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Re: DGR Homework: parting line height and relative stabilities

Postby riverboy » Wed Jan 20, 2010 4:22 pm

chiggins wrote:Someone oughta change your rank to "Calipers of Triumph"

I like this.
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Re: DGR Homework: parting line height and relative stabilities

Postby Frank Delicious » Wed Jan 20, 2010 5:53 pm

Timko wrote:
Frank Delicious wrote:I've fixed a couple of wizards that had clovered funky with the boiling water and it didn't change the parting line in any significant way. I haven't done it to any rocs though because I like some dome on my rocs but I might try it on a domey core I'm getting from Disc Junkie and will see if it does anything to it.


These are the ones I sent you I assume?


They definitely got the treatment but they didn't get fixed completely.
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Re: DGR Homework: parting line height and relative stabilities

Postby Lithicon » Wed Jan 20, 2010 5:58 pm

As far as does the flattenting method work, yes. I've done it on a few disc with great results.
Does it affect the PLH, that I can't honestly say. While it made my Champion Wraith flippier, and my Champion Spider just a little more flippier than it was. I can't say if this was because of the dome change, or if it directly affected the PLH. I would have to say the dome. As far as I know, the PLH stayed the same, really should have checked that closer. But, almost positive it didn't change from before de-doming, and after de-doming.
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Re: DGR Homework: parting line height and relative stabilities

Postby marmoset » Thu Jan 21, 2010 2:46 pm

I posted my findings in a new thread called Experiment: flattening technique, PLH, weight, etc.
Golf is a lot of walking, broken up by disappointment and bad arithmetic. ~Author Unknown
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Re: DGR Homework: parting line height and relative stabilities

Postby chiggins » Thu Jan 21, 2010 5:12 pm

Frank Delicious wrote:I've fixed a couple of wizards that had clovered funky with the boiling water and it didn't change the parting line in any significant way. I haven't done it to any rocs though because I like some dome on my rocs but I might try it on a domey core I'm getting from Disc Junkie and will see if it does anything to it.


I had two Wizards that had gotten warped and sunken (one of 'em by a car), and I was about to write 'em off before I remembered this. Put 'em upside down on another upside disc, filled 'em with water from the kettle, put another disc, some plywood, and a sack of potatoes on top. Pulled 'em out this morning, they're mostly true again and the plate's pretty well restored! They're still beat and understable, but they're back to bein' useful.

Love the hot water treatment. Love it. Thanks for the tip.
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Re: DGR Homework: parting line height and relative stabilities

Postby jubuttib » Fri Jan 22, 2010 9:30 am

Sorry, didn't read the whole thing through so this might have been mentioned before. Anyway:

Everyone who's thrown an Aerobie Pro ring and read the instructions that come with it (or better yet, visited the Aerobie site where they explain some of the physics behind it, at least in relation to the Epic) should know this. If two discs/rings are otherwise identical, the height (from the bottom of the disc) of the leading edge pretty much defines how stable they are compared to each other.

Of course there are lot's of other things that affect stability, but the height of the leading edge is a good starting point.
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