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| | | | Joined: Oct 2005 Posts: 1,317 Shop Shark | | Shop Shark Joined: Oct 2005 Posts: 1,317 | I'm finishing up my a/c install in my 54-3100 and have added a pusher fan for those times when I need to suppliment my belt driven fan. Will operate it off a toggle switch in lieu of a trinary switch.
Been looking at the usual plasic-cased relays and double relay setups for fans, and sure would like to find a metal relay that could be used for extended periods of time without cooking.
I've considered an old style metal horn relay but am hoping someone will have a better idea. Don't know if they would handle the extended time under power. I'm using the plastic bosch-style relays on my headlights but just want something that is a bit more ruggedfor the 14" fan. Any suggestions you might have would sure be appreciated.
Dave | | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | Dave,
The traditional automotive relay can stay energized for eons and not vaporize. If the contact rating of the relay is adequate for the draw of your pusher fan, the relay could stay latched for years and not suffer any self destruction.
Stuart | | | | | Joined: Oct 2006 Posts: 843 Shop Shark | | Shop Shark Joined: Oct 2006 Posts: 843 | RV shops have continuous used solonoids[sp?]generally used on two battery setups.they can be on all day and won't be a problem | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Those little relays they have out now are pretty reliable. New vehicles use them on fuel pumps & fans all the time. What about a high blower relay used to be on all the GM cars back in the 60,s & 70,s. They were made for continuos duty at high amps.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Oct 2005 Posts: 1,317 Shop Shark | | Shop Shark Joined: Oct 2005 Posts: 1,317 | Thanks guys...good suggestions....once again http://www.RockAuto.com came through....68 Caprice 396 blower motor relay...$6.89. All metal case and it can be modified with small machine screws to secure the terminals. I don't like spade ends on high draw stuff!!! Rock Auto let's you dig up an application and #'s so the local parts suppliers don't have a nervous breakdown. Dave | | | | | Joined: May 2005 Posts: 1,624 Shop Shark | | Shop Shark Joined: May 2005 Posts: 1,624 | Just a little thought you might check on. Several radiator shops say not to put a pusher/puller fan combo on your radiator. They say it creats a votex at the radiator and causes less air to flow not more. You might check it out.
Six volt guy living in a twelve volt world
| | | | | Joined: Oct 2005 Posts: 1,317 Shop Shark | | Shop Shark Joined: Oct 2005 Posts: 1,317 | I've also heard of this potential problem. I'm going to run it directly off a manual switch instead of off a trinary and will use it only when I know I'm going to be puttzing along in a cruise or idling for extended periods of time. Hopefully, it's location in front of the radiator won't prove to restrict too much airflow at normal driving speeds. Time will tell! Thanks for your comment. Dave  | | |
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