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Generators In this forum we will try to answer any of your questions about the different model generators that can be found on Blue Bird coach's.

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  #1  
Old 04-06-2019
ArlinV ArlinV is offline
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Default Power tech 15kw

Have had issues with generator cooling fan since purchasing coach a year ago. New capacitor got it going once, but now it’s out again. Looking at going with 12v fan, but looking for correct capacity. Lots of fans out there. In checking old threads I’ve seen recommendations for 16” with 3000cfm. Has anyone done recent install, and if so what have you used? Most of the fans I see are in the 2000cfm to 2500cfm range. Old threads refer to Hayden 3817, but I can’t find it online. Seems to be obsolete. Radiator is narrower than the 16” I’ve seen in the old threads too.

Trying to prepare for a trip in one month, so I’m looking at temporarily using a simple on/off switch (to turn on when running generator) and adding thermostat when I get back. Any drawbacks?
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Old 04-06-2019
Jim Brookshire Jim Brookshire is offline
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You will need to have the fan running anytime the generator is on. There is no air flow to the radiator unless the fan is on. Some installations use a two speed fan which can be used with a thermostat. I would suggest just going with a single speed and keep it simple, just make sure to use a heavy duty relay and at least 10 gage wire.
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Old 04-06-2019
badandy badandy is online now
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I would just replace the motor on your original setup.
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Old 04-06-2019
chiplamb chiplamb is offline
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After careful consideration of the same on a WB I did a changeout rather than a conversion. Parts are cheap through Grainger.
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Old 04-06-2019
Clueless Clueless is offline
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Quote:
Originally Posted by chiplamb View Post
After careful consideration of the same on a WB I did a changeout rather than a conversion. Parts are cheap through Grainger.
Of course those parts aren’t available 7am-10pm 7 days a week at any local Auto parts store like the 80 dollar 12 volt fan that’s also small enough to carry a spare. This matters when you are on the road a lot.
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Old 04-06-2019
badandy badandy is online now
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The only 12v fan you're going to get in stock at an auto parts is cheap junk.
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Old 04-06-2019
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Randy Dupree Randy Dupree is offline
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No matter what you do,if you change to a 12v fan you can pick up a signal wire from the hour meter (above the fan) and use it to turn on a relay to get power to the fan.
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Old 04-07-2019
Clueless Clueless is offline
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Quote:
Originally Posted by badandy View Post
The only 12v fan you're going to get in stock at an auto parts is cheap junk.
Oh?
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Last edited by Clueless; 04-07-2019 at 08:48 AM.
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Old 04-07-2019
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Randy Dupree Randy Dupree is offline
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I have really good luck with the car type fans,i think i engineered that mod years ago.on a hot day in NM when the factory fan died.
I did build a nice shroud this year,so the fan is mounted properly.
The first one i changed was in a walmart parking lot in Taos NM on sunday.
zip ties and monkey tape and it worked so well i never changed it.
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Old 04-07-2019
badandy badandy is online now
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Quote:
Originally Posted by Clueless View Post
That cheap junk Hayden fan I bought off the shelf at o’reillys has been going strong for 5 years now. If it failed, I could have another within the hour. While boondocking even with solar that fan is needed sooner than granger can get parts to you.

Of course you could always give up your fun and move to a plug in site.
The original fan motor lasted what, 30 years? Hayden are not high quality electric fans.
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