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Author Topic: What are my options for blower fan for my Globe 500C?  (Read 5722 times)
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ke7trp
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« on: April 08, 2009, 02:03:44 AM »

This one is dead, I have oiled it and tried my best. I think its just time for a new one. I searched around the net and could not find the exact one. Its a small Cage fan that pressurizes the RF deck for the 4-400 final. Any 500C owners out there that found a replacement?

Oh its 117 volt AC

Thanks in advance!

Clark
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K4TLJ
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« Reply #1 on: April 08, 2009, 08:40:04 AM »

McMaster Carr has a selection.

http://www.mcmaster.com/#blowers/=1csako
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Regards
Terry
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ke7trp
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« Reply #2 on: April 08, 2009, 01:02:58 PM »

Nothing on there but large industrial blowers. THis one is no larger then your fist.

Clark
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K4TLJ
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« Reply #3 on: April 08, 2009, 01:11:26 PM »

Look at 'Miniature Blowers' under the Air Intake Blowers....
expensive though.
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Terry
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ke7trp
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« Reply #4 on: April 08, 2009, 02:01:57 PM »

There is one that might work. Thanks.. $151 is pricey though... Surplus sales has one for $85 that might work also. Today, I am going to take the factory blower off the RF deck and attempt to pull the bushings out. I found a local bearing house. Maybe I will get lucky.  If anyone comes up with something let me know. I will take pictures of it today.

CLark
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Detroit47
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« Reply #5 on: April 08, 2009, 02:35:29 PM »

How about Grainger? Grainger.com
73 N8QPC
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K7LYF
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« Reply #6 on: April 08, 2009, 02:47:31 PM »

Clark, look for an electric motor repair shop. They should stock most serviceable electric motor bushings.

Good luck.

mike
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W1RKW
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« Reply #7 on: April 08, 2009, 04:05:23 PM »

Clark,
PM me with some pictures of the blower. Include a ruler in the pictures.  I think I may have something that might work.
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Bob
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k4kyv
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Don
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« Reply #8 on: April 08, 2009, 10:36:28 PM »

I  have been running rigs capable of a kw++ for over 45 years, and I have never used a cooling fan.  The only exception to that is my converted Gates BC xmtr, but its fan was too noisy.  So I rewired it for 120v; it still moves air but makes much less noise.  But I added an on/off switch, and rarely turn the fans on.

Convection cooling is cool.  Forced air cooling sucks.
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Don, K4KYV                                       AMI#5
Licensed since 1959 and not happy to be back on AM...    Never got off AM in the first place.

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« Reply #9 on: April 08, 2009, 10:50:57 PM »

some of these hot boxes there's just no way to cool without forced air. My HB rig didnt need a fan because there was lots of empty air around the 812H's, no enclosure at all actually.  Roll Eyes

other side - I'd never even use a FT101 without the fan even on SSB.
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ke7trp
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« Reply #10 on: April 09, 2009, 01:12:21 AM »

I just cant imagine running this rig with its rack mount cabinet and the 4-400 with no fan. I would think the something would go wrong with all that heat.

I am using a 4 inch muffin fan with rubber feet on the top of the GLobe running off a Variac. Its keeping it cool until I can get a replacement blower. The stock cage fan is pressurising the bottom of the RF deck and allowing air to run across the Tube seal.

Clark
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