VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Prev Previous Post   Next Post Next
  #9  
Old 11-10-2020, 07:29 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,865
Default

Quote:
Originally Posted by Mark33 View Post
Yes, I commented on this thread. For the reason you?re pointing out I?m installing duel relays running in parallel with each other. Each fuel pump will have it?s own relay but will also be able to be powered by the opposite relay. Each fuel pump will also be powered by its own separate circuit breaker.
Don't forget that a scheme like this will also require switches to activate each pump. You will need a method to test that the b/u pump is operational at Run up. I would also be concerned that BOTH pumps are run through one common relay. If that relay fails, you stop moving air unless there is a backup power route to the pumps. As shown in the pic, I would be concerned with that design. In theory, a failed relay should still make the NC connection, but you are banking a lot on that fact.
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019

Last edited by lr172 : 11-10-2020 at 07:34 AM.
Reply With Quote
 


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 08:29 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.