Rising Sun Member Forums  

Go Back   Rising Sun Member Forums > Toyota 4x4 > General Tech Forum

Reply
 
Thread Tools
  #11  
Old 02-03-2012, 02:19 PM
rover67's Avatar
rover67 rover67 is offline
Rising Sun Member
 
Join Date: Nov 2007
Location: Boulder, Co
Posts: 5,223
Default

Sweet!!

Yeah Dave, glad you pointed that out, I have noticed a big difference in quality on some of these relays... Good Idea to order them from a place that you can get good ones. I'll have to do that for my spares.
__________________
Marco Capote
KDGWX
85 FJ60
82 FJ40
Reply With Quote
  #12  
Old 02-03-2012, 02:25 PM
DaveInDenver's Avatar
DaveInDenver DaveInDenver is offline
Hard Core 4+
 
Join Date: Jun 2006
Location: Larimer County
Posts: 6,476
Default

Quote:
Originally Posted by rover67 View Post
Sweet!!

Yeah Dave, glad you pointed that out, I have noticed a big difference in quality on some of these relays... Good Idea to order them from a place that you can get good ones. I'll have to do that for my spares.
It's also worth pointing out that most times the rating stamped or implicit in the part number is for purely resistive loads. So a 30A relay is designed to switch 30A into a light bulb, for example. But this relay would not switch 30A into a motor for very long, typically the derating is ~1/3rd. IOW, a 30A relay good for 250K cycles is really only guaranteed for 20A reactive and likely for a reduced number of cycles at that. If the ARB compressor draws say 20A and being that we drive our trucks in hot and cold temps, mud and crud, it's best to be very conservative and use a 40A or 50A relay, which will probably last for 100K cycles. Most likely the plastic will get brittle and break before the contacts weld.
__________________
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29

"They say the test of literary power is whether a man can write an inscription. I say, 'Can he name a kitten?'" -- Samuel Butler
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -6. The time now is 10:41 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.