KR> RE: Nikasil...

2008-10-12 Thread Marc Lee Winnig 
Don't know about the finer points questioned here (like better overall designs, 
etc...) but I believe BMW cycles went to Nikasil in the 80's (or early 90's) 
for several reasons.  One was weight, but the primary was heat transfer.  It 
seems a lot is lost in the transfer from the linings to the heads, and this 
process eliminated this issue.  I am sure there are many technical papers, 
patents, etc., for those who wish to dive deeper.  Just not sure I need to go 
that far, but clearly it is the right technology, and while it may be new here, 
it is proven stuff!Also, I think rough EXTERIORS on castings increase surface 
area and help with heat dissipation, so smooth may not be good there.  On the 
inside oil flow must be optimized, thus highly polished interiors are usually 
desired.   Marc Lee Winnig   

mlwin...@hotmail.com   

(815) 301-5011  Cell and Vonage   
(801) 749-9460  FAX> I have always wondered about the roughness of the 
castings of the VW jugs  and thought the billet stuff would be better but this 
information far  exceeds what I would have expected. It looks like these jugs 
answer all of  the needs, more power, better heat disapation longer TBO and so 
on.
_
Get the Live.com Holiday Page for recipes, gift-giving ideas, and more.
www.live.com/?addtemplate=holiday

KR> RE: Nikasil...

2008-10-12 Thread tinya...@aol.com 
I think the advantage of Nikasil cylinders is they are cheap.  Not for 
Corvairs/VWs it seems, but in model airplane engines it is the cheapest engine 
you can buy.  They are often considered throw away engines.  Nikasil cylinders 
can't be bored so they are a lot like Chromed aluminum cylinders.   

Kevin.


-Original Message-
From: mlwin...@hotmail.com
To: kr...@mylist.net
Sent: Thu, 21 Dec 2006 1:34 PM
Subject: KR> RE: Nikasil...


Don't know about the finer points questioned here (like better overall designs, 
etc...) but I believe BMW cycles went to Nikasil in the 80's (or early 90's) 
for 
several reasons.  One was weight, but the primary was heat transfer.  It seems 
a 
lot is lost in the transfer from the linings to the heads, and this process 
eliminated this issue.  I am sure there are many technical papers, patents, 
etc., for those who wish to dive deeper.  Just not sure I need to go that far, 
but clearly it is the right technology, and while it may be new here, it is 
proven stuff!Also, I think rough EXTERIORS on castings increase surface area 
and 
help with heat dissipation, so smooth may not be good there.  On the inside oil 
flow must be optimized, thus highly polished interiors are usually desired.   
Marc Lee Winnig   

mlwin...@hotmail.com   

(815) 301-5011  Cell and Vonage   
(801) 749-9460  FAX> I have always wondered about the roughness of the 
castings of the VW jugs  and thought the billet stuff would be better but this 
information far  exceeds what I would have expected. It looks like these jugs 
answer all of  the needs, more power, better heat disapation longer TBO and so 
on.
_
Get the Live.com Holiday Page for recipes, gift-giving ideas, and more.
www.live.com/?addtemplate=holiday
___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html

Check out the new AOL.  Most comprehensive set of free safety and security 
tools, free access to millions of high-quality videos from across the web, free 
AOL Mail and more.

KR> RE: Nikasil...

2008-10-12 Thread Mark Langford 
Kevin wrote:

> I think the advantage of Nikasil cylinders is they are cheap.  Not for
Corvairs/VWs it seems, but in model airplane engines it is the cheapest
engine you can buy.  They are often considered throw away engines.  Nikasil
cylinders can't be bored so they are a lot like Chromed aluminum cylinders.

Nikasil isn't a material, it's a coating that's often applied to aluminum
cylinders to improve wear resistance.  Porsche Nikasiled just about every
one of its cylinders at one time, and I don't think they did it because it's
cheap!  They did it so they could use lightweight aluminum cylinders that
still have good longevity in the place of cast iron cylinders.  See
http://en.wikipedia.org/wiki/Nikasil for details.  The article mentions that
it fell from favor due to problems associated with high sulfur fuels, but
100LL probably doesn't have that problem.  It's also somewhat tricky to
apply.

 I'm working on a UAV engine project in which the folks that are building
the engine insist that there's only one place in the world that knows how to
Nikosil plate correctly.  Applied incorrectly it has been known to flake off
and cause real problems...

Mark Langford, Huntsville, Alabama
see KR2S project N56ML at http://home.hiwaay.net/~langford
email to N56ML "at" hiwaay.net
--

KR> RE: Nikasil...

2008-10-12 Thread Larry Flesner 
At 01:34 PM 12/21/2006, you wrote:
>I think rough EXTERIORS on castings increase surface area and help 
>with heat dissipation, so smooth may not be good there.Marc Lee Winnig


Rough surfaces also cause turbulence in the cooling air flow
which is not good.

Larry Flesner

KR> RE: Nikasil...

2008-10-12 Thread Dan Heath 
Then, what is "cool tin" for, if not to cause turbulance, slow down the air,
so it can pick up the heat??? 

See N64KR at http://KRBuilder.org - Then click on the pics 
See you at the 2007 - KR Gathering
There is a time for building and a time for FLYING and the time for Flying
has begun.
Daniel R. Heath - Lexington, SC
---Original Message---


Rough surfaces also cause turbulence in the cooling air flow
which is not good.

KR> RE: Nikasil...

2008-10-12 Thread R. Eason Sr. 
The referance below is outdated.  Further development has been made in resent 
years. I brought the cylinders to the KR flyin a few years ago and showed them. 
The cylinders are CNC machineed from a a solid block of aluminum.  The nickle 
is molten liquid fused to the aluminum and then diamond honed to the cylinder 
diameter. The nickle is not a coating. Many racing engines have been built and 
raced in the past 10 years or so. The cylinders can be re-honed if dammaged.
My resource that I delt with is LN Engineering. The web site is 
www.lnengineering.com . They will even build you an engine. They are not cheep.
The have cylinders for Vairs and other engines. 

Ronald R. Eason Sr.
Pres. & CEO, KCMO Office
J.R.L. Engineering Consortium Ltd.
816-468-4091, Kansas City, MO. 
Web Page: www.jrl-engineering.com


-- Original Message --
From: "Mark Langford" 
Reply-To: KRnet 
List-Post: krnet@list.krnet.org
Date:  Thu, 21 Dec 2006 15:40:34 -0600

Kevin wrote:

> I think the advantage of Nikasil cylinders is they are cheap.  Not for
Corvairs/VWs it seems, but in model airplane engines it is the cheapest
engine you can buy.  They are often considered throw away engines.  Nikasil
cylinders can't be bored so they are a lot like Chromed aluminum cylinders.

Nikasil isn't a material, it's a coating that's often applied to aluminum
cylinders to improve wear resistance.  Porsche Nikasiled just about every
one of its cylinders at one time, and I don't think they did it because it's
cheap!  They did it so they could use lightweight aluminum cylinders that
still have good longevity in the place of cast iron cylinders.  See
http://en.wikipedia.org/wiki/Nikasil for details.  The article mentions that
it fell from favor due to problems associated with high sulfur fuels, but
100LL probably doesn't have that problem.  It's also somewhat tricky to
apply.

 I'm working on a UAV engine project in which the folks that are building
the engine insist that there's only one place in the world that knows how to
Nikosil plate correctly.  Applied incorrectly it has been known to flake off
and cause real problems...

Mark Langford, Huntsville, Alabama
see KR2S project N56ML at http://home.hiwaay.net/~langford
email to N56ML "at" hiwaay.net
--


___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html







Sent via the WebMail system at jrl-engineering.com

KR> RE: Nikasil...

2008-10-12 Thread R. Eason Sr. 
Go to www.lnengineering.com for better info.


Ronald R. Eason Sr.
Pres. & CEO, KCMO Office
J.R.L. Engineering Consortium Ltd.
816-468-4091, Kansas City, MO. 
Web Page: www.jrl-engineering.com


-- Original Message --
From: tinya...@aol.com
Reply-To: KRnet <kr...@mylist.net>
List-Post: krnet@list.krnet.org
Date:  Thu, 21 Dec 2006 16:14:19 -0500

I think the advantage of Nikasil cylinders is they are cheap.  Not for 
Corvairs/VWs it seems, but in model airplane engines it is the cheapest engine 
you can buy.  They are often considered throw away engines.  Nikasil cylinders 
can't be bored so they are a lot like Chromed aluminum cylinders.   

Kevin.


-Original Message-
From: mlwin...@hotmail.com
To: kr...@mylist.net
Sent: Thu, 21 Dec 2006 1:34 PM
Subject: KR> RE: Nikasil...


Don't know about the finer points questioned here (like better overall designs, 
etc...) but I believe BMW cycles went to Nikasil in the 80's (or early 90's) 
for 
several reasons.  One was weight, but the primary was heat transfer.  It seems 
a 
lot is lost in the transfer from the linings to the heads, and this process 
eliminated this issue.  I am sure there are many technical papers, patents, 
etc., for those who wish to dive deeper.  Just not sure I need to go that far, 
but clearly it is the right technology, and while it may be new here, it is 
proven stuff!Also, I think rough EXTERIORS on castings increase surface area 
and 
help with heat dissipation, so smooth may not be good there.  On the inside oil 
flow must be optimized, thus highly polished interiors are usually desired.   
Marc Lee Winnig   

mlwin...@hotmail.com   

(815) 301-5011  Cell and Vonage   
(801) 749-9460  FAX> I have always wondered about the roughness of the 
castings of the VW jugs  and thought the billet stuff would be better but this 
information far  exceeds what I would have expected. It looks like these jugs 
answer all of  the needs, more power, better heat disapation longer TBO and so 
on.
_
Get the Live.com Holiday Page for recipes, gift-giving ideas, and more.
www.live.com/?addtemplate=holiday
___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html

Check out the new AOL.  Most comprehensive set of free safety and security 
tools, free access to millions of high-quality videos from across the web, free 
AOL Mail and more.
___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html







Sent via the WebMail system at jrl-engineering.com

KR> RE: Nikasil...

2008-10-12 Thread Brian Kraut 
The cool tin is there to keep the air going all the way around the cylinder
instead of just going between the cylinders and blowing straight down.  The
fins on the bottom of the cylinder would not see any air flow past them if
the cool tins were not installed.  Pretty much all aircraft engines I can
think of have a cool tin type of arrangement.

Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com

-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of Dan Heath
Sent: Thursday, December 21, 2006 6:52 PM
To: kr...@mylist.net
Subject: Re: KR> RE: Nikasil...


Then, what is "cool tin" for, if not to cause turbulance, slow down the air,
so it can pick up the heat???

See N64KR at http://KRBuilder.org - Then click on the pics
See you at the 2007 - KR Gathering
There is a time for building and a time for FLYING and the time for Flying
has begun.
Daniel R. Heath - Lexington, SC
---Original Message---


Rough surfaces also cause turbulence in the cooling air flow
which is not good.

___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html

KR> RE: Nikasil...

2008-10-12 Thread pe...@heroic.co.uk 
I have a 1981 Porsche 911 which has nikasil bores.

Nikasil does not wear much at all - much less than iron, It the rings and
eventually the piston skirts wear.

Nikasil is used in ally cylinders, the alternative is steel liners.

As pots are never a prob, I see little real benefit as the main area of
concern with VW engines ( especially running mogas ) is head wear. You
prob need replace the heads twice for each pot replacement.

Pete

KR> RE: Nikasil...

2008-10-12 Thread tinya...@aol.com 
I have read everything I can find on the net with Nikasil.  In the model 
airplane world anything with a coating on the cylinder is considered cheap.  I 
think mostly because on model airplane engines they do the block and cylinder 
in one piece then coat the cylinder to get the hardness needed.  It is a very 
cheap way of building an engine (low parts count), but is very lightweight.  I 
still think of the Nikasil cylinder as a throw away part.  It isn't shop 
rebuildable if damaged and new cylinders will have to be bought.  I guess that 
makes it not so cheap.  One web site did claim the Nikasil cylinder is 2-3 
times stronger than chrome plated cylinders.  Bottom line is any cast iron 
cylinder engine converted to these aluminum cylinders will be lighter weight.  
I may buy a set of Nikasil cylinders myself.

Kevin.





-Original Message-
From: n5...@hiwaay.net
To: kr...@mylist.net
Sent: Thu, 21 Dec 2006 3:40 PM
Subject: Re: KR> RE: Nikasil...


Kevin wrote:

> I think the advantage of Nikasil cylinders is they are cheap.  Not for
Corvairs/VWs it seems, but in model airplane engines it is the cheapest
engine you can buy.  They are often considered throw away engines.  Nikasil
cylinders can't be bored so they are a lot like Chromed aluminum cylinders.

Nikasil isn't a material, it's a coating that's often applied to aluminum
cylinders to improve wear resistance.  Porsche Nikasiled just about every
one of its cylinders at one time, and I don't think they did it because it's
cheap!  They did it so they could use lightweight aluminum cylinders that
still have good longevity in the place of cast iron cylinders.  See
http://en.wikipedia.org/wiki/Nikasil for details.  The article mentions that
it fell from favor due to problems associated with high sulfur fuels, but
100LL probably doesn't have that problem.  It's also somewhat tricky to
apply.

 I'm working on a UAV engine project in which the folks that are building
the engine insist that there's only one place in the world that knows how to
Nikosil plate correctly.  Applied incorrectly it has been known to flake off
and cause real problems...

Mark Langford, Huntsville, Alabama
see KR2S project N56ML at http://home.hiwaay.net/~langford
email to N56ML "at" hiwaay.net
--


___
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html

Check out the new AOL.  Most comprehensive set of free safety and security 
tools, free access to millions of high-quality videos from across the web, free 
AOL Mail and more.

KR> RE: Nikasil...

2008-10-12 Thread Marc Lee Winnig 
Lucky I SOLD ALL my BMW's and my Porsche--  GUESS I SHOULD HAVE THROWN THEM 
AWAY!!!Marc Lee Winnig

mlwin...@hotmail.com

(815) 301-5011  Cell and Vonage
(801) 749-9460  FAX> To: kr...@mylist.net> Subject: Re: KR> RE: Nikasil...> 
Date: Fri, 22 Dec 2006 10:27:00 -0500> From: tinya...@aol.com> > I have read 
everything I can find on the net with Nikasil.  In the model airplane world 
anything with a coating on the cylinder is considered cheap.  I think mostly 
because on model airplane engines they do the block and cylinder in one piece 
then coat the cylinder to get the hardness needed.  It is a very cheap way of 
building an engine (low parts count), but is very lightweight.  I still think 
of the Nikasil cylinder as a throw away part.  It isn't shop rebuildable if 
damaged and new cylinders will have to be bought.  I guess that makes it not so 
cheap.  One web site did claim the Nikasil cylinder is 2-3 times stronger than 
chrome plated cylinders.  Bottom line is any cast iron cylinder engine 
converted to these aluminum cylinders will be lighter weight.  I may buy a set 
of Nikasil cylinders myself.>  > Kevin.>  >  >  >  >  > -Original 
Message-> From: n5...@hiwaay.net> To: kr...@mylist.net> Sent: Thu, 21 Dec 
2006 3:40 PM> Subject: Re: KR> RE: Nikasil...> > > Kevin wrote:> > > I think 
the advantage of Nikasil cylinders is they are cheap.  Not for> Corvairs/VWs it 
seems, but in model airplane engines it is the cheapest> engine you can buy.  
They are often considered throw away engines.  Nikasil> cylinders can't be 
bored so they are a lot like Chromed aluminum cylinders.> > Nikasil isn't a 
material, it's a coating that's often applied to aluminum> cylinders to improve 
wear resistance.  Porsche Nikasiled just about every> one of its cylinders at 
one time, and I don't think they did it because it's> cheap!  They did it so 
they could use lightweight aluminum cylinders that> still have good longevity 
in the place of cast iron cylinders.  See> http://en.wikipedia.org/wiki/Nikasil 
for details.  The article mentions that> it fell from favor due to problems 
associated with high sulfur fuels, but> 100LL probably doesn't have that 
problem.  It's also somewhat tricky to> apply.> >  I'm working on a UAV engine 
project in which the folks that are building> the engine insist that there's 
only one place in the world that knows how to> Nikosil plate correctly.  
Applied incorrectly it has been known to flake off> and cause real problems...> 
> Mark Langford, Huntsville, Alabama> see KR2S project N56ML at 
http://home.hiwaay.net/~langford> email to N56ML "at" hiwaay.net> 
--> > > 
___> Search the KRnet Archives at 
http://www.maddyhome.com/krsrch/index.jsp> to UNsubscribe from KRnet, send a 
message to krnet-le...@mylist.net> please see other KRnet info at 
http://www.krnet.org/info.html> 
> Check 
out the new AOL.  Most comprehensive set of free safety and security tools, 
free access to millions of high-quality videos from across the web, free AOL 
Mail and more.> ___> Search the KRnet 
Archives at http://www.maddyhome.com/krsrch/index.jsp> to UNsubscribe from 
KRnet, send a message to krnet-le...@mylist.net> please see other KRnet info at 
http://www.krnet.org/info.html
_
Get into the holiday spirit, chat with Santa on Messenger.
http://imagine-windowslive.com/minisites/santabot/default.aspx?locale=en-us