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Author Topic: Hollow Dog  (Read 9147 times)

Spinningray

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Hollow Dog
« on: December 07, 2009, 10:48:40 PM »



I was reading the post on the yoyoing board from Chris about wanting the grooves removed from a Hollow Point and had to try it.
Parted off the portion above the o-ring groove and then plunged into the inside so that the bulldog cap would fit tight. No more tape.
Removed the grooves and gave it a satin finish.
It started at 118 grams and is now 80 grams (including cap).
It is a very sweet player.

http://www.woodtops.com/images/hollowdog.jpg
« Last Edit: December 08, 2009, 12:14:29 AM by Spinningray »
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Neff

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Re: Hollow Dog
« Reply #1 on: December 08, 2009, 12:04:44 AM »

EEEEEK!  I was thinking about that!  I was getting concerned it would get crazy top heavy having to leave the top band so the radius would be the same as the bulldog cap.  I just sent mine in the mail today to YoEric.

That's coooooooool.  Did you do that on a metal lathe?

I wasn't sure the cap would fit, so here are the directions I was going to send YoEric:



Intent being keeping some rim weight at the top.
« Last Edit: December 08, 2009, 12:45:03 AM by yophosis »
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Spinningray

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Re: Hollow Dog
« Reply #2 on: December 08, 2009, 12:59:40 AM »

Great diagram and directions. It will look great.
I did it all on a wood lathe using wood turning tools.
I didn't need to reduce the diameter of the cap. It was just the right size.
It was a little tricky cutting the recess for the cap to fit in, but I  shouldn't have to worry about the cap coming off.
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Neff

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Re: Hollow Dog
« Reply #3 on: December 08, 2009, 01:11:50 AM »

I'd rather do your mod, if ya don't mind?  The aspect ratio of an HP with bulldog cap kinda bugs me, too tall.  I'm glad I sent them off because now that you told me you did it on a wood lathe, i'd be downstairs hakin' away whithout having adequate experience yet.
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Pulpowsky

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Re: Hollow Dog
« Reply #4 on: December 08, 2009, 04:03:44 AM »

This tunning is in my agenda long time ago waiting for the lathe.

I'll do the same with the exception of the o-ring groove. I use this groove for a certain string binding as you can see in this video.

[youtube]B7VDdZmUwCs[/youtube]

My top dog cup dont fix it firmly into the HP, do yo perform something? Can you show us?
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  Greetings: Jorge Sanjuan.

www.pulpowsky.com/foro

ta0

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Re: Hollow Dog
« Reply #5 on: December 08, 2009, 10:44:16 AM »

Great work Alan!

Does it play more like a fixed-tip Acrobat?
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Spinningray

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Re: Hollow Dog
« Reply #6 on: December 08, 2009, 11:47:35 PM »

It does play a little like the Acrobat.

I attach the top to the head stock with a rod shaped like shaft portion of the tip.
Support the body from the inside using a live center. Adjust so the top runs true.
Tighten the live center so that the tip connection drives the top.
This will allow access to remove a portion of the rim.
With the rim removed, the inside diameter of the body is smaller than the step in the Bull Dog cap.
Use a parting tool to machine a slot for the Bull Dog cap to fit.



« Last Edit: December 09, 2009, 04:56:58 PM by Spinningray »
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ta0

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Re: Hollow Dog
« Reply #7 on: December 09, 2009, 05:11:57 PM »

Thanks for the detailed explanation and the pictures Alan. I don't have a live center for my mini metal lathe but I need to do something with the QS I sawed the cap off in desperation just before worlds  :-X We'll see what comes out of it  ???
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Neff

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Re: Hollow Dog
« Reply #8 on: January 11, 2010, 10:12:09 PM »

EEEEK!! omahgahd-omahgahd-omahgahd!!!

From: Eric Wolff
To: chris neff
Sent: Mon, January 11, 2010 6:49:34 PM
Subject: RE: HP shave

Your “Hollow-Dogs” (Alan’s name – which I like) are heading to you via USPS Priority Mail.  Call me when you get them.







 
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ta0

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Re: Hollow Dog
« Reply #9 on: January 12, 2010, 09:48:43 AM »

They look ready for a world-class fixed-tip freestyle to me  ;)
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Neff

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Re: Hollow Dog
« Reply #10 on: January 14, 2010, 01:38:32 PM »

These are so sweet! What I was hoping was that they would act a little more like a Rip Cord, so I could go back and forth without making huge adjustments.  Why Rip Cord?  Of all the fixed tip tops I've tried, the Rip Cord just seems to obey, and now these Hollow Dogs do it too, only better.  We're talkin' man's best friend.

I wish I had a stock HP now to compare again, but from memory:

They seem so small now! But they play big. They weigh about 85 grams now (25 grams less), and they are physically smaller than a Rip Cord but still 25 grams heavier.  The play is a little faster, like I wanted. The original HP's are kinda "stubborn" for the style of play I'm going for, example - continuous suns were really hard with the HP.

The only drawback is that because it is much thinner where the string winds, it needs a pretty short and thin string.  For fixed tip I want all the tops I use to have similar length - your hands get used to a length in regenerations and if you go long to short it can really mess you up.  So, I just adjust the size.  I don't mind thin string, but too thin and it won't wire walk very well.  Grinding down the stock tips helps quite a bit (I spin them in a lathe and use a dremel cut-off tool to make the gap more of a "V" shape - also I grind it at the shelf where the point meets the top so there is no gap).  I found that a thickness between what I like for Rip Cords and Sidewinders is the best (2 size 10 and 2 threads).  Now they can wirewalk awesome with little tension and great control, but with elevators (up the string) it is difficult to overcome the weight.

Oh, and the only way to MISS a catch is to miss the top completely, instead of landing in any one of the old grooves and burning out your spin.  I like that new feature.  A lot.

Wish I had a Throwback to compare it too…  Make more Go public, Hans!
« Last Edit: January 14, 2010, 08:19:54 PM by yophosis »
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ta0

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Re: Hollow Dog
« Reply #11 on: January 14, 2010, 06:10:31 PM »

Quote
Wish I had a Throwback to compare it too…  Make more, Hans!

 ??? Are Throwbacks out of stock?

Those tops look sweet, indeed!
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ta0

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Throwbacks and Acrobats
« Reply #12 on: January 14, 2010, 08:34:56 PM »

Hans just confirmed that he has both, Throwbacks and Acrobats, still available.



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poptop

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Re: Hollow Dog
« Reply #13 on: February 18, 2010, 02:08:57 AM »

My oh my, those tops look fantastic!  I've been eager to put my HP on a diet, but I don't want to butcher the only one I have.  I was thinking of simply taking down the grooves to a smooth finish like the diagram, but the Hollow Dog's got me thinking...  Hopefully Dale will make a few more HPs for us, but in the meanwhile, I think I'll be dismantling a Torpedo ;D
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Erratic Wobbler

Neff

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Re: Hollow Dog
« Reply #14 on: February 18, 2010, 09:54:52 AM »

It plays amazing.  BUT if I did it again, I think I would chop the height again, but bondo the remaining grooves instead of grinding them out.  The string length thing bugs me.  The string it "wants" for a straight-up boomerang throw is too short for regen play IMO.  I've tried thinner string, but then wire walking becomes difficult, even though I've improved the tip groove.
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poptop

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Re: Hollow Dog
« Reply #15 on: February 18, 2010, 06:04:23 PM »

You would go the Bondo route because you want to preserve a bit more weight, thickness or both?
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Neff

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Re: Hollow Dog
« Reply #16 on: February 18, 2010, 07:14:54 PM »

For thickness, so the string could be a little longer.  I've got it as thin and as long as will work, but it still just feels short compared to the length I use on Rip Cords (64"), which I am VERY accustomed to now.  The shorter string messes with my rhythm in regenerations.

I'm just whining, though.  A 60" long Spintastic's "Small" string works just fine.

« Last Edit: February 18, 2010, 09:27:31 PM by Neff »
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