YoYo Discussion forum - Halloween in June

Hey Madcow!

The whole thing is press-fit... I avoid glue if I can... it's unpredictable (weight wise, and I hate setting up clamps) :^)

This was my first one so my method was playing it safe and exploritory.

I wanted to leave a good amount of meat around the o-ring groove... and create a stair step effect with the pad recess and the Bolt.... so the parts would have a positive 'seat' together.

I started by cutting the Bolt... about 0.004" bigger than the Ace I pad recess.

Then I cut the Ace I... about 0.010" inside the pad recess.. all the way through.

This was the crazy part. Because of my jaws... I couldn't grab the outside of the halves... and I could grab the inside, but it seemed like I was going to scratch the rings up... so I grabbed the center tower! (The idea is to hold the part you wanna keep, if you can help it folks)

So to keep the rings from being cut off and banging around afterwords... I got close and turned the chuck by hand... one 0.001" at a time.

I didn't know where I was in depth, so I just kept going... and going... I covered 0.040" this way... 3-4 turns per 0.001"... my arm was tired!

Then the ring peeled right off! <whew!>

I measured the theickness of the cut and the second one took about 1 min to cut to the exact same dimensions.

I then cut a stairstep (to matched the aluminum halves) into the Bold Hubs... the inner circle on the Bolt was to be about 0.004" bigger than the new Ace I cut.

Unfortunately, the Pad recessess on an Ace I are about the same depth as the 4 push-out holes in the Bolt... and I didn't want the cut-outs to go all the way through. This may not make sense to the readers, but I basically cut the Bolt hubs so that there was about 0.010" thick plastic unde the push-out holes... the result was that the bolt hubs stuck out into the respons area about 0.010"... oh well...

Once everything was cut, I tried press fitting the parts.

The celcon is pretty maliable and soft, so I put the Ace I on the carpet in my garageand pressed the Bolt hubs in from the recess side. I used a rubber sledge hammer to tap them in.

Totally smooth, no wobble... totally stoked!

I should have taken pictures... but I was on a roll. :^)

If you were to hold up the Bolt hubs, alone, axle down, you'd see that the lower diameter was ~1.010" and ~0.025" thick, then it steps in to ~0.800"

The Ace I has a matching recess and cut 0.002" - 0.004" smaller than the celcon. The celcon compresses and holds the fit tight.

I could pop them off I wanted to.

As for getting an Ace I for $35... it happens!

I payed ~$45 for and Ace II on ebay recently... and it's the better one for sure!

A friend just bough an Ace I and Ace II on Ebay for less than $50!!!!! the pair!!!(man I was jealous!)

Hope this info helps!

Feralparrot