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Ask DocSk8 (Expert Indoor Skate Building Advice) This forum is different then the other SkateLog forums in that it is not a discussion forum, but rather a place you can ask skate building expert Fred "DocSk8" Benjamin about building and repairing indoor speed, derby, and jamskate quad roller skates. Please start a new thread for each new question.

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Old September 17th, 2014, 02:35 AM   #1
jackbkwikn
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Default What are these.Do you know?

Brought these a while ago with the world champ plates.Fantastic looking wheels.I am going to send to Scott to get re thaned.But i just noticed something about them Can you see what i see...







O ring grooves how innovative
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Old September 17th, 2014, 02:11 PM   #2
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Never seen them. I have a similar set but no O ring groove, which interestingly enough, has a healthy coat of blue 'Roothane on them.

Do yourself and Scott a favor and verify the hubs are concentric and on axis. Also make sure the bearing bores are NOT oversize. Scott is most likely 20% balder than previously due to the sets he has done for me not being particularity concentric. A couple of them took multiple attempts to get back on axis.


Well, I would link in a picture but photobucket is having a tantrum right now. Maybe later.
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Old September 18th, 2014, 04:40 PM   #3
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The o-ring is something new. I wonder what the thought process is there? Is it there to seal or maybe to hold the bearing in place when the wheel is not on the skate.
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Old September 18th, 2014, 05:00 PM   #4
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I'm assuming to keep the bearings from sliding around without having to machine the aluminum so tight to the bearings. So it's tight with less possibility of gouging the aluminum with the hard steel casings of the bearings if they aren't perfectly flat when being pressed in. With the o-ring they would simply slide about a 1/3 of the way in then be already lined up to just pop past the o-ring with some pressure. Also helps for bearings with less than perfect outer diameter tolerances (which, interestingly, is what the ABEC ratings are really mostly about.) So the wheel would still be fairly solid with slightly smaller bearings and still fit slightly larger or less than perfectly round bearings.

I like the idea as it pertains to aiding the bearing pressing process and could imagine it working well with plastic hub wheels as well without the o-ring and just a very slight ramped step part way in. Might be handy in both inline and quad wheels.
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Old September 21st, 2014, 01:37 AM   #5
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Bearing bores are good .Better than the new bonts anyway...
The hub is 49mm and the wheels are 57mm.
i want scott to get them out to 62/65 whichever mold works i guess..
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Old October 18th, 2014, 03:02 AM   #6
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They'll be sick looking wheels after that, post some after pics
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