KR> VW engine oil temperature

[m.ladigo at cox.net]

Sid,
It was made known to me long ago that running your oil temperature lower than 
212-215 degrees F precludes the natural elimination of condensation and 
hydrocarbons from your oil thereby shortening your oil's service life and 
actually HARMING your engine by retaining fluid contaminants in the oil.
The closer you can keep it to that 215 degree mark the better, but lower than 
that is just as bad for your engine, ...in my humble opinion.  I was also 
informed that organic based motor oils (standard motor oils) are able to 
withstand temperatures far greater than 250 before they start to degrade.  The 
number provided to me was almost 400 degrees F before degradation and coking 
begin to take place.
Mike Ladigo

KR> airfoil templates

[jon kimmel]

You can't be that precise with paper templates anyway.  I noticed that my
rib template was short by 1/8 inch.  I thought that kinko's printer scaled
it...went through a bunch of file manipulation to make a dxf file and
such...then thought i would check one that was already glued to a
rib...nuts on...the paper shrank 0.3%  The only way to avoid that is to
print on mylar.

https://sites.google.com/site/mykr2stretch/
https://sites.google.com/site/mykr2stretch/parts-for-sale
On May 28, 2013 8:29 PM, "Mark Langford"  wrote:

> Phil Hill wrote:
>
>  ...when faced with cutting out an
>> airfoil profile, like the ones in our KR plans, do you cut outside the
>> line, inside the line or right down the middle?  The line is so thick,
>> where you cut it, makes a difference.
>>
>
> It won't matter if the size is a little large or small, or even if you
> gradually deviate even  .100", but as Larry said, be consistent.  I modeled
> and made the "new airfoil" drawings at http://www.krnet.org/as504x/**
> templates.html , and I drew
> them up with a .030" gap between two sets of lines.  My logic for that was
> to use the outer line to try to cut the airfoil out, but invariably you'll
> cut off some of the line with the jigsaw, so the second line is there for
> you to use a sanding block to get really close to the second line.  With
> some care, you could get an almost perfect outside shape.  Of course, once
> you start sanding the foam wings to shape using the airfoil templates as
> guides, you'll alter the shape anyway.  Bottom line with airfoil shapes is
>  to get it close to the intended shape, and it'll fly just fine. I went way
> out of my way to build mine perfectly to the templates, and the wings to
> have perfect dihedral and washout, and on my first flight I realized I was
> going to have to put an aluminum trim tab on one of my ailerons, as well as
> my elevator.  It still flew fine though...
>
> Mark Langford
> ML at N56ML.com
> website at http://www.N56ML.com
> --**--
>
>
> __**_
> Search the KRnet Archives at 
> http://tugantek.com/**archmailv2-kr/search
> .
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see 
> http://list.krnet.org/mailman/**listinfo/krnet_list.krnet.orgto
>  change options
>

KR> Silly question

[jon kimmel]

Second attempt at a reply.  You can't be that precise with paper
templates anyway.  I was about to cut out a rib and noticed that my
rib template was short by 1/8 inch.  I thought that kinkos' printer
had scaled it...I went through a bunch of file manipulation to make a
dxf file and such...then thought i would check the one that was
already glued to a rib and it was nuts on...the paper shrank 0.3%.
The only way to avoid that is to print on something dimensionally
stable like mylar.



On 5/28/13, Phillip Hill  wrote:
> Ok, this is probably a silly question, but when faced with cutting out an
> airfoil profile, like the ones in our KR plans, do you cut outside the
> line, inside the line or right down the middle?  The line is so thick,
> where you cut it, makes a difference.
>
> Phill Hill
> Collinsville, IL
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change
> options
>

KR> test

[warron gray]

testing no updates

KR> VW engine oil temperature

[smwood]

Appreciate all the commentary and suggestions.
I think I have a reasonable bracketing on various recommended temperatures 
except for the oil temperature (251 F).  The newness of the engine may be 
contributing some extra heat.  Another factor could be the prop: I don't 
know for sure if the Sterba 52X52 prop is right for my airplane.  Might be 
lugging to much and producing more heat and less power.  I will have to play 
with the engine tuning for next flight.
My plan is to keep the existing oil cooler setup.  Added will be to blow 
some fresh air on the bottom of the engine sump.  The sump has cast ribs and 
some tapped holes; just the thing to fasten some sheet metal.  I saw a 
baffle arrangement on a KR website, but cannot find it now.  I remember how 
that looked and can adapt that baffle arrangement to my VW installation. 
Also means yet another mod to the cowl and even more down time.  Gotta do 
what you gotta do.
Does anyone have any info on cooling the VW oil sump?

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA

KR> GoPro video

[brian.kraut at eamanufacturing.com]

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KR> VW engine oil temperature

[brian.kraut at eamanufacturing.com]

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KR> VW engine oil temperature

[Larry&Sallie Flesner]

At 03:56 PM 5/29/2013, you wrote:
>First, I seriously doubt that air on the bottom of the pan will 
>contribute significantly to cooling your oil.


Has anyone considered or is it possible to add or enlarge the oil 
cooler on the VW to add 2 or 3 quarts capacity to give the oil a 
chance to cool some before re-entering the engine?  Oil is major 
component in engine cooling.  Just a thought.

Larry Flesner

KR> VW engine oil temperature

[brian.kraut at eamanufacturing.com]

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KR> VW engine oil temperature

[Chris Gardner]

Sid
I built a NACA scoop on the front of my lower engine cowl to blow air directly 
at the oil sump.
Helps a lot . In cool weather (less than 50 F) I actually plug it to raise the 
oil temp to at least 160 degrees F.

I can send you a picture directly if you send your email address.

Also ,regarding props contributing to cooling. I was running a 54D x 48P Ed 
Sterba prop for several years and it seemed to provide enough speed and 
cooling. Turned about 3100 rpm on takeoff on my Great Planes 2180 VW.

I also have the stock oil cooler mounted on top of the engine directly on the 
block.

Regards
Chris Gardiner 
kR2S C-GKRZ

Sent from my iPad

On 2013-05-29, at 3:40 PM, "smwood"  wrote:

> Appreciate all the commentary and suggestions.
> I think I have a reasonable bracketing on various recommended temperatures 
> except for the oil temperature (251 F).  The newness of the engine may be 
> contributing some extra heat.  Another factor could be the prop: I don't know 
> for sure if the Sterba 52X52 prop is right for my airplane.  Might be lugging 
> to much and producing more heat and less power.  I will have to play with the 
> engine tuning for next flight.
> My plan is to keep the existing oil cooler setup.  Added will be to blow some 
> fresh air on the bottom of the engine sump.  The sump has cast ribs and some 
> tapped holes; just the thing to fasten some sheet metal.  I saw a baffle 
> arrangement on a KR website, but cannot find it now.  I remember how that 
> looked and can adapt that baffle arrangement to my VW installation. Also 
> means yet another mod to the cowl and even more down time.  Gotta do what you 
> gotta do.
> Does anyone have any info on cooling the VW oil sump?
> 
> Sid Wood
> Tri-gear KR-2 N6242
> Mechanicsville, MD, USA
> 
> 
> 
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change 
> options

KR> VW engine oil temperature

[Dan Heath]

Revmaster makes the perfect oil cooler for the VW.  I used it on mine and if
there was a problem with it, it was that it kept the oil too cool at times.
Check it out on the revmaster web site or in this video on UTube:

http://www.youtube.com/watch?v=YvgU8P5LR5Q

You will get a very good look at the entire installation.  I did not just
think about it.  This was about my 4th attempt to get the oil cool enough
and this time it worked perfectly.  None of the others made much of a
difference and they were very "hokey".

See N64KR at http://KRBuilder.org - Then click on the pics?
See you Oct. 4 and 5, 2013 - KR Gathering in Mt. Vernon, Il ? MVN 
Daniel R. Heath -?Lexington, SC

-Original Message-

Has anyone considered or is it possible to add or enlarge the oil cooler on
the VW to add 2 or 3 quarts capacity to give the oil a chance to cool some
before re-entering the engine?  Oil is major component in engine cooling

KR> VW engine oil temperature

[Jeff Lange]

Sid, 

I used the fins on the bottom of the case to help cool the oil. Not sure how 
much it helps. IMHO, full flowing the oil and a quality oil cooler are the most 
important factors. I tried numerous things early in my flight testing period to 
keep the oil cool but changing to full flow and a Mocal 13 row cooler (from one 
of those stamped pieces of crap) took my oil from 250F to 190F. Oil temps are 
the nearly the same if I am in a climb, cruising to a destination or full 
throttle for 2 hours during a race. 

I am currently reworking my entire cooling system and will not flow air across 
the bottom of the case. I don't feel that its worth the effort. 

Jeff Lange

On May 29, 2013, at 2:40 PM, "smwood"  wrote:

> Appreciate all the commentary and suggestions.
> I think I have a reasonable bracketing on various recommended temperatures 
> except for the oil temperature (251 F).  The newness of the engine may be 
> contributing some extra heat.  Another factor could be the prop: I don't know 
> for sure if the Sterba 52X52 prop is right for my airplane.  Might be lugging 
> to much and producing more heat and less power.  I will have to play with the 
> engine tuning for next flight.
> My plan is to keep the existing oil cooler setup.  Added will be to blow some 
> fresh air on the bottom of the engine sump.  The sump has cast ribs and some 
> tapped holes; just the thing to fasten some sheet metal.  I saw a baffle 
> arrangement on a KR website, but cannot find it now.  I remember how that 
> looked and can adapt that baffle arrangement to my VW installation. Also 
> means yet another mod to the cowl and even more down time.  Gotta do what you 
> gotta do.
> Does anyone have any info on cooling the VW oil sump?
> 
> Sid Wood
> Tri-gear KR-2 N6242
> Mechanicsville, MD, USA
> 
> 
> 
> ___
> Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
> please see other KRnet info at http://www.krnet.org/info.html
> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change 
> options