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PostPosted: Sun Aug 17, 2008 10:00 pm 
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I should think it's ok,,,,,"BumBuddy" is no longer with us. Cheer's, Andy.

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PostPosted: Wed Jan 31, 2018 2:09 pm 
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Joined: Wed Dec 05, 2012 6:52 pm
Posts: 77
This was an interesting concept. I wont knock it because the sport needs guys with novel ideas to keep us thinking and testing. However a flat, broader based thrust face will be better.
Physics explains this for us.
Friction, when imparted by the same given force, will be the same at a single point of contact, or one of broad contact. It simply spreads the load across a broader face or more localized at the single point...but exactly the same friction load ..
However, single point contact will want to dig in more or wear more..altering the surface contact as we shoot over time.....thus less consistancy potentials..
You cannot beat a nice flat washer face ...as designed in any thrust bearing situation.


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PostPosted: Wed Jan 31, 2018 7:34 pm 
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Joined: Thu Oct 13, 2005 6:52 pm
Posts: 7087
Location: Vancouver Island BC
clarky wrote:
This was an interesting concept. I wont knock it because the sport needs guys with novel ideas to keep us thinking and testing. However a flat, broader based thrust face will be better.
Physics explains this for us.
Friction, when imparted by the same given force, will be the same at a single point of contact, or one of broad contact. It simply spreads the load across a broader face or more localized at the single point...but exactly the same friction load ..
However, single point contact will want to dig in more or wear more..altering the surface contact as we shoot over time.....thus less consistancy potentials..
You cannot beat a nice flat washer face ...as designed in any thrust bearing situation.



Well this is a very old post and flat washer work just fine ...........


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PostPosted: Thu Feb 01, 2018 7:36 am 
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Joined: Mon Aug 24, 2015 4:56 pm
Posts: 447
Location: Tecumseh, Ontario in South Western Ontario
"Well this is a very old post and flat washer work just fine ..........."

I'm sure they work well and I believe so would thrust bearings. Some one says 'pounding' and everyone assumes they do without thinking it through.
There is no pounding. There is pressure at all times on those bearing. That pressure increases slowly as you cock the gun and then REDUCES when it's fired.
We had a member 'robertr' who installed thrust bearings and checked on them after 100s of shots and they showed no wear at all.

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