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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Fri Aug 30, 2013 8:14 pm 
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Joined: Thu Apr 19, 2012 7:18 pm
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Location: Madison Wisconsin
Here is prototype #1. I made 2 of these and they are not quite done but I would love for one of you guys to try it and then we can talk about it. Money back if it doesn't work for you.

http://www.chefknivestogo.com/edproprprpi.html

I like the Rod End but the shank is a little large. My big question is if you can get an accute enough angle as is or do I need to incur the expense to chop off part of the shank to make it drop down further.



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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Fri Aug 30, 2013 11:42 pm 
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Joined: Tue May 01, 2012 10:53 pm
Posts: 335
Location: Seattle, WA USA
I can tell right off that you need to shorten the knuckle on the rod end. That is the limiting factor on how low you can set the angle. You'll want to get the angle down low and still be able to use the drill stop. I made a new back plate for mine so the arm will be centered to the blade table and even mounted it in a lower position to give me some room there.

I have made a couple of these and found that it really does make a difference.

Image

This is as low as I can get it, the limiting factor is clearing the blade stop hardware.
Image

This is as low as I can get it AND use the drill stop mod. I have some room so that I could lower the custom back plate if I HAD to get the angle lower. So far I haven't had the need.
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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Sat Aug 31, 2013 11:56 am 
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Location: Madison Wisconsin
Yea like I said this is my first shot.

Did you find that rod end as is or did you have to cut the shank yourself? Where did you get it?



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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Sat Aug 31, 2013 3:48 pm 
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Joined: Tue May 01, 2012 10:53 pm
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Location: Seattle, WA USA
I cut it, vise and a hacksaw did the trick. I got my ends and rods from McMaster Carr.


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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Sun Sep 01, 2013 5:12 pm 
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Thanks I'll take these over to a machine shop and tell them to cut them off and see how that works. Maybe to start I'll do what you did until I'm sure it will sell.



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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Mon Sep 02, 2013 4:20 am 
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Joined: Wed May 09, 2012 3:59 pm
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Location: Cape Town - South Africa
Mark:

Stay away from the "plastic" unit.

I tried them (Igus) - they are prone to stiction.

http://www.igus.com/wpck/default.aspx?pagenr=3748


Go metal all the way.

:)



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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Mon Sep 02, 2013 7:23 am 
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Location: Seattle, WA USA
That is so funny. I went to the nylon rod end because my first 2 metal ones had horrible stiction problems. ;)


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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Mon Sep 02, 2013 12:17 pm 
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Posts: 30
Location: Boston, MA
A good quality bearing grease should solve any stiction issue in this sort of setup.
Also, rounding both edges of the bearing channel (where the arm goes through) should help alleviate a bit of the stiction as that'll reduce some of the vacuum effect aiding it.


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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Mon Sep 02, 2013 12:36 pm 
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Location: USA... mostly.
PARADOX <> How many calibers are you chambered in? ;)



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 Post subject: Re: Mad Rookie Modified Pivot for Pro Version
PostPosted: Mon Sep 02, 2013 1:47 pm 
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Location: Seattle, WA USA
Melampus wrote:PARADOX <> How many calibers are you chambered in? ;)


My EDC are primarily 9mm and .45. I can alternately accommodate .380, .38, .357 MAG, .357 SIG, and .40. Of course there is also .22 but that's just for fun really. 8-)


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