VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #21  
Old 09-19-2016, 09:43 AM
Paris12Man's Avatar
Paris12Man Paris12Man is offline
 
Join Date: Apr 2010
Location: Paris, TX
Posts: 261
Default Coolant change

How often should the coolant liquid be changed? I'm sure it's written someplace, but I can't find it. Thanks.
__________________
Steve Garrett - 903-272-5639, scgarrett@exede.net
N905RV - 436 hrs to date
Home field XS30
Reply With Quote
  #22  
Old 09-19-2016, 10:58 AM
DaleB's Avatar
DaleB DaleB is offline
 
Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 1,528
Default

The RV-12 maintenance manual refers you to the Rotax maintenance manual. The Rotax line maintenance manual says only that it must be replaced when overhauling the engine, or when the manufacturer says to replace it. They don't say whether they are referring to the coolant manufacturer, or the airplane manufacturer. So... apparently, check with the coolant manufacturer.

I figure the cooling system has to be completely drained to replace the hoses every five years, so that's when it gets new coolant. I think the jug of Dex-Cool I bought also says 5 years/150K miles.

Edit: Of course this assumes Dex-Cool coolant, there are other types. I know nothing about them. Check your coolant for more information about its service life, I guess.
__________________
Dale
Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
-=VAF=- 2017 dues paid

Last edited by DaleB : 09-19-2016 at 11:09 AM.
Reply With Quote
  #23  
Old 09-19-2016, 03:46 PM
Chrysopelea Chrysopelea is offline
 
Join Date: Jan 2016
Location: santa rosa CA
Posts: 89
Default

Upon a recent pre-flight check, I found my overflow tank tube cracked in the same manner as in your pic.

I did the same, removed, cut 3/4" off, and reinstalled. This IMO should hopefully hold until my 5 year full hose changeout in 2 years.




Quote:
Originally Posted by PilotBrent View Post
After a few hours of Young Eagle flights today, and about to put my -12 back in the hanger, notice a puddle forming of Dexcool coolant on the taxiway. The hose attached to the reservoir for the coolant had failed. Small crack in the rubber and the hose apparently fell off. Lost about 2/3 of the coolant in the overflow bottle but coolant level in the system itself unaffected. Rest of hose looked fine - cut off about 1/2" and reinstalled. Probably discovered it just after it happened as a lot of the coolant was still dripping through the engine area.



Reply With Quote
  #24  
Old 03-24-2017, 10:56 AM
Ueli N Ueli N is offline
 
Join Date: Oct 2013
Location: Blaine WA
Posts: 22
Default

I have the same problem with the overflow bottle hose keeps leaking and splitting.
It seems the hose is too small in diameter for the application.
I assume the problem is a result of making a standard hose fit a metric size nipple.
Has anybody found a better replacement hose than the supplied 3/16" hose?
Would like to have that fixed before first flight.
__________________
120794
final stages.
Reply With Quote
  #25  
Old 03-24-2017, 11:06 AM
John-G John-G is offline
 
Join Date: Jan 2012
Location: Northeast Ohio
Posts: 398
Default

Quote:
Originally Posted by Ueli N View Post
Has anybody found a better replacement hose than the supplied 3/16" hose?
Ueli - Yes, use 7 mm metric hose. I got some from a foreign car parts place. To get over the coolant bottle that 3/16 hose is stretched to 9 mm which is just about double its normal size.

Below is a post on my blog that covers the issue.

http://www.dogaviation.com/2016/07/c...plit-hose.html

Happy flying,
__________________
John
www.dogaviation.com
RV-12 Wings, Empennage, Fuselage, Finishing, Avionics and Powerplant kits all completed
Now Flying!!

Dues paid until September 2017
Reply With Quote
  #26  
Old 03-24-2017, 11:25 AM
Ueli N Ueli N is offline
 
Join Date: Oct 2013
Location: Blaine WA
Posts: 22
Default

Thanks John for your quick reply, and your homework on the subject.
I'm going to look for a bigger hose.
__________________
120794
final stages.
Reply With Quote
  #27  
Old 03-25-2017, 10:26 AM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 1,984
Default

Seems like 1/4" would be close enough.
Reply With Quote
Reply


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 05:31 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.