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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 November 8th, 2016, 01:09 AM   #1
turfboy1997
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Default Ultimate III Kingpin

Doc,

I got some ultimate III plates. They came with the flathead bolt screw kingpin. is there a drop in kingpin that will work for these such as Snyder, Proline or reactor? Thanks for your time!

Brad
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Old November 8th, 2016, 06:19 PM   #2
Doc Sk8
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Default 3/8 x 20 BSF.

The UIII use the same king pin thread as the OLD Chicagos and Sure Grips. That leaves you a lot of options assuming the holes are still threaded correctly. The Harry's Stud reverse king pin from SG work. For that matter, the reverse UIII king pins work as well. The SG Ti king pins from the Super White Magnums work. Of course any other stock old Chicago or SG king pin will work as well.

Snyder are 3/8 x 16 UNC for the most part. You would need to chase the threads in the plate to use the Snyder parts. I have bought uses ones that have had that done to one or more of the holes as a repair since 3/8 x 20 bolts / taps etc are not easy to find @ the hardware.

Pro Line or Reactor will only work if you have a machinist open the plates up to take the 1/2 x 20 UNF Why do I say machinist?? That is how I have mine done.

If you are comfortable with tread sizes etc, you should have no trouble sorting this out.. If not post a pic of the king pins pulled out. Do all 4 just in case one of them was "fixed" @ some point in the past.
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Old November 8th, 2016, 07:51 PM   #3
turfboy1997
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Default

What about the newer Snyder advantage second gen version king pins?
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Old November 8th, 2016, 10:14 PM   #4
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Still has the 3/8 x 16 thread on one end, 3/8 x 24 on the other, so the plate would need reworked.
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