Seven Dometic Fantastik Fan Failures

Maxcamp

If anyone has removed a Fantastik fan that has a viable motor and blade I will gladly buy it from you.
It appears Dometic's suppliers are unable to make a usable product.  Crooked fanblade shaft hole and wobble in motor bearings.

I ordered FIVE fan motor/blade replacements (#3 through #7) on Amazon (shipped from Dometic) hoping one would not have excessive runout (wobble).  No such luck, they are ALL unusable and getting returned.  Just spinning by hand exhibits a 5/8" to 7/8" perimeter sway up and down, which will scrape the fan housing and screen.  One screeched and stopped turning due to interior resistance.

https://vimeo.com/1019477719 #6

https://vimeo.com/1019477624 #3

https://vimeo.com/1019477666  #4

https://vimeo.com/1019477687 #5

https://vimeo.com/1019477744 #7

Our current installed replacement (#2) wobbles and will fail.  When reversed it scrapes the screen.  The original motor (#1) failed in first 1.5 years.  We run fan on exhaust at low speed whenever in the camper, so six weeks per year of use is ±500 hours. 
Small motors like electric drills and fans (with brushes) typically have a rated life of 1500 to 3500 hours.  

I will eventually have to replace with a Maxxair which will require enlarging the roof opening I believe.  Not looking forward to yet more work on the camper.
I've had to fix the broken lift mechanism on this and reinforce with aluminum angles; had to replace the motor and opted to fabricate and install a potentiometer speed control, and installed an all weather hood.

https://tab-rv.vanillacommunity.com/discussion/7200/variable-speed-pwm-ceiling-fan-mod-10-bucks/p5
https://tab-rv.vanillacommunity.com/discussion/comment/183901#Comment_183901

elbolillo

Maxxair fan will fit without modification. 

Maxcamp

Thanks.  I had the impression the opening needed enlargement, apparently not.  Still a lot of work and expense.  

Do folks still use a separate rain hood?

This seems like the most pertinent discussion of conversion?
https://tab-rv.vanillacommunity.com/discussion/9490/2019-320s-oem-fantastic-fan-to-maxxair-installation-complete

elbolillo

No need for a separate rain hood with the Maxxair. The Maxxair really should be the standard fan on the Nucamp. Quieter, more adjustable speeds, remote, and no rain hood needed.