Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Cooling

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kitfox-List
View previous topic :: View next topic  
Author Message
janderson412(at)hotmail.c
Guest
PostPosted: Thu Mar 23, 2006 3:39 pm    Post subject: Cooling Reply with quote
Well, further to my wee cooling saga, I got the brass NSI radiator back from
the rad shop and seems to check out OK?? The big mystery is why it is not
circulating an cold in parts when the engine is hot. I have a second small
Earls radiator in the heater circuit and take the feed for this from the
t/stat housing (hottest part of the system). I wondered if the water pump
(new) is favoring this circuit and there is not enough suck available to
pump the (cold) water back up from the main radiator. Thinking that perhaps
I should change the feed side of the small rad to a 'T' in the return up
pipe from the main rad, then all the water the pump moves goes through the
main rad. I have a small hole in the t/stat so there would still be some
circulation before it opens. Any thoughts on this? John A. EA81T

Shop til you drop at XtraMSN Shopping http://shopping.xtramsn.co.nz/home/

- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List
Back to top
wingsdown(at)comcast.net
Guest
PostPosted: Thu Mar 23, 2006 4:04 pm    Post subject: Cooling Reply with quote
The flow will take the path of least resistance. Do you have pics of the
entire system. Have you ruled out an air pocket. Did you fill using a
vacuum fill type procedure or bleed all air out somehow?

Rick

--

- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List
Back to top
ddsyverson(at)comcast.net
Guest
PostPosted: Thu Mar 23, 2006 4:10 pm    Post subject: Cooling Reply with quote
John,

I won't claim to be any kind of an expert on the system you have; but I can
offer some pointers which come to mind on liquid cooling systems in general.

First, since you have a thermostat in the cooling circuit; do you know for
sure that it is actually opening, or opening far enough? My lo-tech car way
of doing things is that if I have any doubt about a thermostat, I take it
out, put it in a kettle of water on the stove with a thermometer in the water
bath - heat it up and see if it opens when it should, and as far as it
should. Usually thermostats have their calibration temp stamped on them
somewhere - this is the temp the thermostat should start opening at. Maybe
aircraft thermostats are perfect and they don't go out of calibration;
however, I know auto thermostats puke on a regular basis, either sticking
open, or not opening at all.

2nd, and I am not sure if this is even likely with the fairly small diameter
hoses used in the cooling system, consider the possibility of a suction side
hose collapsing when the engine is operating at high RPM - I have seen this
on cars on a lower radiator hose which is soft - sort of sucks the hose flat
and the water quits flowing. Again, I am not real sure this is remotely
possible, given the size of the hoses but at least an idea.

Overall, I would be looking for something which is restricting or partially
restricting the liquid flow.

Big picture on liquid cooling - the liquid has to circulate, the air has to
circulate and the radiator has to, well, radiate.

Incidentally, I am building a kitfox 7 with the rotax engine and do want to
include a thermostat in the system just to keep the engine up to temp in some
of the less than tropical weather we experience in Minne-snow-ta. Can any of
you guys tell me where a person gets a thermostat for these systems?

Dave S.
St Paul, MN

Do Not Archive

On Thursday 23 March 2006 5:37 pm, John Anderson wrote:
Quote:

<janderson412(at)hotmail.com>
Well, further to my wee cooling saga, I got the brass NSI radiator back
from the rad shop and seems to check ...... have a small hole in the t/stat
so there would

Quote:
still be some circulation before it opens. Any thoughts on this? John A.
EA81T


- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List
Back to top
janderson412(at)hotmail.c
Guest
PostPosted: Thu Mar 23, 2006 4:34 pm    Post subject: Cooling Reply with quote
Thanks Dave, some good points. Yes I did do the old hot water test on the
t/stat but it's on my list, ordered a fail over type also. Large hoses and
seem faily stiff. John
From: Dave and Diane <ddsyverson(at)comcast.net>
Reply-To: kitfox-list(at)matronics.com
To: kitfox-list(at)matronics.com
Subject: Re: Cooling
Date: Thu, 23 Mar 2006 18:10:07 -0600



John,

I won't claim to be any kind of an expert on the system you have; but I can
offer some pointers which come to mind on liquid cooling systems in general.

First, since you have a thermostat in the cooling circuit; do you know for
sure that it is actually opening, or opening far enough? My lo-tech car way
of doing things is that if I have any doubt about a thermostat, I take it
out, put it in a kettle of water on the stove with a thermometer in the
water
bath - heat it up and see if it opens when it should, and as far as it
should. Usually thermostats have their calibration temp stamped on them
somewhere - this is the temp the thermostat should start opening at. Maybe
aircraft thermostats are perfect and they don't go out of calibration;
however, I know auto thermostats puke on a regular basis, either sticking
open, or not opening at all.

2nd, and I am not sure if this is even likely with the fairly small diameter
hoses used in the cooling system, consider the possibility of a suction side
hose collapsing when the engine is operating at high RPM - I have seen this
on cars on a lower radiator hose which is soft - sort of sucks the hose flat
and the water quits flowing. Again, I am not real sure this is remotely
possible, given the size of the hoses but at least an idea.

Overall, I would be looking for something which is restricting or partially
restricting the liquid flow.

Big picture on liquid cooling - the liquid has to circulate, the air has to
circulate and the radiator has to, well, radiate.

Incidentally, I am building a kitfox 7 with the rotax engine and do want to
include a thermostat in the system just to keep the engine up to temp in
some
of the less than tropical weather we experience in Minne-snow-ta. Can any of
you guys tell me where a person gets a thermostat for these systems?

Dave S.
St Paul, MN

Do Not Archive

On Thursday 23 March 2006 5:37 pm, John Anderson wrote:
>
> <janderson412(at)hotmail.com>
>
>
> Well, further to my wee cooling saga, I got the brass NSI radiator back
> from the rad shop and seems to check ...... have a small hole in the
t/stat
so there would
> still be some circulation before it opens. Any thoughts on this? John A.
> EA81T

Become a fitness fanatic (at) http://xtramsn.co.nz/health

- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List
Back to top
janderson412(at)hotmail.c
Guest
PostPosted: Thu Mar 23, 2006 4:59 pm    Post subject: Cooling Reply with quote
http://www.sportflight.com/cgi-bin/uploader.pl?action=view&epoch=1142915948
This gives you a bit of an idea Rick. I filled the system by removing the
main radiator hoses at the top then filled the lower rad. Vacuum system
would be the best way I guess. John
From: "wingsdown" <wingsdown(at)comcast.net>
Reply-To: kitfox-list(at)matronics.com
To: <kitfox-list(at)matronics.com>
Subject: RE: Cooling
Date: Thu, 23 Mar 2006 16:02:45 -0800



The flow will take the path of least resistance. Do you have pics of the
entire system. Have you ruled out an air pocket. Did you fill using a
vacuum fill type procedure or bleed all air out somehow?

Rick

--

- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Kitfox-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group