Fw: [Collins] RE: {Collins} Re: 70K-2 PTO

[david knepper]

I would like to add my two cents to this discussion.

First, if you examine this bearing under a magnifiying glass, you will 
observe amazingly how irregularly round it is. On the older PTO's, I have 
found a steel bearing, interestingly.

Secondly, I wonder why an insulating bearing when a steel bearing would have 
done nicely?

Finally, I have discovered that the PTO turns ever so nicely if you remove 
one of those cupped washers from the front of the lead screw.  If there is 
tension at this point, no amount of adjustment  of the concentric bushing 
nut will give you that wonderful inertia feeling at the tuning knob.  The 
shaft should turn quite freely, almost effortlessly or whatever I am trying 
to saying!

Thirdly, I would recommend using b-b shot from a shotgun shell - somone out 
there would know the size.  I would say that a 410 shell would work nicely.
Just a thought.  Ask a hunter in your parts or someone who loads shotgun 
shells.

Oh, by the way, I had one of these "critters" fall on to my carpet.  Sure 
didn't do my back any good but I found it.  I consider it almost a miracle!

Dave, W3ST - W3CRA

----- Original Message ----- 
From: "pete wokoun, sr." <pwokoun at hotmail.com>
To: <collins at mailman.qth.net>
Sent: Friday, November 16, 2007 12:29 AM
Subject: RE: [Collins] RE: {Collins} Re: 70K-2 PTO



Hi,

  Just a question from someone still learning.  Why does the leadscrew need 
to be isolated from the endcap?
Isn't it grounded at the shaft end already?

Pete


.. Remember, the end of that leadscrew must be> isolated from the round 
endcap, so a BB, or anything steel isn't gonna> work.. Anyway, just my 2cts, 
FWIW.. Tony, 
WB8MLA______________________________________________________________
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