mcarterbrown.com

mcarterbrown.com (http://www.mcarterbrown.com/forums/)
-   CCI (http://www.mcarterbrown.com/forums/cci/)
-   -   Powertube Question (http://www.mcarterbrown.com/forums/cci/196899-powertube-question.html)

BassDude 03-25-2012 12:09 AM

Powertube Question
 
So, I have two Powertubes:

Lapco #6 cut down to Phantom length
and
Stock Phantom Powertube

When using the #6, I was really having to crank my TPC, pressure on my Stab at 600, and a heavy main spring to get 280. Well, when I found out it was stripping my cup seals (see http://www.mcarterbrown.com/forums/c...cup-seals.html), I switched back to the stock CCI Powertube.

Now with my stock powertube, my Stab is at about 500 and my TPC turned out from where it was with the #6. I guess I'll be sticking with the stock powertube.

My question is, why is this happening? I am simply curious and want input from others here with more experience than myself.

Ziggymarley 03-25-2012 04:17 AM

Maybe the increase in open space of the #6 required more pressure. I believe the rule was:

Small spaces for 12s and large ports for CA.

BassDude 03-25-2012 11:18 AM

Quote:

Originally Posted by Ziggymarley (Post 2273656)
Maybe the increase in open space of the #6 required more pressure. I believe the rule was:

Small spaces for 12s and large ports for CA.

Interesting. I have never heard that. Makes sense though, I think.

Quote:

Originally Posted by CJOttawa (Post 2273706)
Who knows? I've had bad luck with Lapco internals in Phantoms. I stopped trying to figure out why and just stick with what works.

You and me both.

THE-SHOOTIST 03-25-2012 10:14 PM

I've used CCI valve tubes in every Nelson pump I've ever owned, and I owned them all, since 1987. It's a superior product. LAPCO's are a copy of CCI's. The only real benefit over CCI that LAPCO has is the varying valve diameters, if this is important to you.


All times are GMT -4. The time now is 03:40 PM.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO
© MCB Network LLC