[TenTec] 110 vs 240

[Jason Cooper]

Josh,
Read your last note with interest.  I just acquired a Titan 425 that has been sitting for around 15 years and am carefully going through it before applying power.  I have read in some threads that the Titan fan is quite noisy.  Do you have any information as to whether or not the fan you have just described will work in the Titan 425.  If not maybe you or other members may have some suggestions.  I will probably post another note Re. Titan 425 mods.
Thanks,
Jason KN7AZ 
  ----- Original Message ----- 
  From: Josh<mailto:jkelly at hiwaay.net> 
  To: Discussion of Ten-Tec Equipment<mailto:tentec at contesting.com> 
  Sent: Monday, March 07, 2005 11:02 AM
  Subject: Re: [TenTec] 110 vs 240


  Hi Joel.  This is a HOT thread.  Several have ask about the Centaur

  fan replacement.  The one I used is the Mouser part #5912-4800X.

  57.1 CFM @ 1750 RPM. (www.mouser.com<http://www.mouser.com/>).  I think the key is

  1750 RPM, most are 3100.  Works well for me, but less CFM's will

  probably work FB too.  As to power, I do not have a good reference.

  The 811's were soft when I got the Centaur used.  I run the 572B's at

  300 to 500 wts.  If more is needed I go to the Titan III.  The 572B's

  are a matched set of 3, Taylor from RF Parts.  Hope this helps.

  73 de Josh,  N4VB

  ----- Original Message ----- 
  From: "joel hallas" <jrhallas at optonline.net<mailto:jrhallas at optonline.net>>
  To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com<mailto:tentec at contesting.com>>
  Sent: Monday, March 07, 2005 9:48 AM
  Subject: Re: [TenTec] 110 vs 240


  > Josh,
  >
  > Can you please provide the details on the quieter fan?
  >
  > I'd also be interested in the results you've obtained with the 572s.
  > I've seen conflicting stories regarding the benefits and am still
  > running with 811As here. Did you take accurate before and after
  > measurements? Also wonder what brand 572s you had good luck with?
  >
  > BTW, I run my Centaur on 230 V for all the reasons described so far. I
  > ran a dedicated drop from a 240 V fuse pair to the shack and only power
  > the amplifier with it. I see no nasty effects from keying the amp such
  > as lights dimming, or change in frequency that I would expect if I ran
  > from a shared 115 V drop.
  >
  > Thanks and 73, Joel, W1ZR
  >
  > Josh wrote:
  >
  >>Hi Tim, this is Josh in Alabama,  N4VB.  I made several changes to my
  >>Centaur.
  >>
  >>1..  change out noisy fan...  2... install new 572B's.... 3..Move over to
  >>240V.
  >>
  >>Now it runs much more quiet, cool and more pwr.  I also have a Titan III
  >>with
  >>
  >>same ac plug for both.  73 es DXUPONU,  Josh
  >>
  >>----- Original Message ----- 
  >>From: "Tim _W1WCI" <kb1gfv at arrl.net<mailto:kb1gfv at arrl.net>>
  >>To: <tentec at contesting.com<mailto:tentec at contesting.com>>
  >>Sent: Sunday, March 06, 2005 6:40 PM
  >>Subject: [TenTec] 110 vs 240
  >>
  >>
  >>
  >>
  >>>Just added 240 volts to the shack.
  >>>
  >>>I am wondering if rewiring my Centaur for 240 volts would change or
  >>>improve performance?
  >>>
  >>>If so I would love an explanation of the theory behind any improvement
  >>>or efficiency.
  >>>
  >>>Thanks for any help.
  >>>
  >>>73
  >>>Tim
  >>>W1WCI
  >>>_______________________________________________
  >>>TenTec mailing list
  >>>TenTec at contesting.com
  >>>http://lists.contesting.com/mailman/listinfo/tentec
  >>>
  >>>
  >>>
  >>>
  >>
  >>
  >>_______________________________________________
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  >>
  >>
  >>
  >
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