Matronics Email Lists :: View topic - CorvairEngines-5th bearing

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

CorvairEngines-5th bearing

Matronics Email Lists Forum Index -> CorvairEngines-List

View previous topic :: View next topic

Author Message

John Bolding

Joined: 23 May 2006
Posts: 281

Posted: Wed Jan 26, 2011 7:05 pm Post subject: CorvairEngines-5th bearing

A little more homework on the subject might be helpful to  understand the difference.

 [quote]   ---

- The Matronics CorvairEngines-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?CorvairEngines-List

rvickski(at)yahoo.com
Guest

Posted: Thu Jan 27, 2011 2:06 am Post subject: CorvairEngines-5th bearing

Well I need to apologize to Mike and the list, I was a little chapped about opinions being touted as facts.Forgive my satire.

Roy



On Jan 26, 2011, at 10:02 PM, John Bolding wrote:

[quote]A little more homework on the subject might be helpful to understand the difference.

[quote]---

- The Matronics CorvairEngines-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?CorvairEngines-List

tigerized(at)gmail.com
Guest

Posted: Thu Jan 27, 2011 6:25 am Post subject: CorvairEngines-5th bearing

Brother Roy!



The latest KITPLANES (finally) contains the Experimotive column I

wrote about Dan, you, and Mark. In this piece I thought I did a pretty

good job of describing the difference between the different bearing

offerings.



Let me see if I can get a PDF of the article to you, it might help

correct some of the perceptions that people hold about price being the

final determining factor.



Rick



On Thu, Jan 27, 2011 at 2:04 AM, roy szarafinski <rvickski(at)yahoo.com> wrote:

[quote] Well I need to apologize to Mike and the list, I was a little chapped about

 opinions being touted as facts.

 Forgive my satire.

 Roy

 On Jan 26, 2011, at 10:02 PM, John Bolding wrote:



 A little more homework on the subject might be helpful to understand the

 difference.



 ---

- The Matronics CorvairEngines-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?CorvairEngines-List

MRus597999(at)aol.com
Guest

Posted: Thu Jan 27, 2011 9:05 am Post subject: CorvairEngines-5th bearing

I apologize for being misinformed. I read the Kitplane article after I  visited Roy's website. It does appear he has an excellent product and is well  worth the reasonable price he is asking. It has been some time since I visited  the site and it looks like he has and is creating some other very excellent  products for the Corvair conversion. I am still working on upgrading my 601xl  airframe and am a few months away from finishing it. I was already to start on  my corvair when the FAA stopped all Zenith builders in their tracks. Maybe  that's a good thing. I am going to really examine Roy's 5th bearing again.

  

 Mike Russell

  

  In a message dated 1/27/2011 6:25:09 A.M. Pacific Standard Time,  tigerized(at)gmail.com writes:

 [quote]-->    CorvairEngines-List message posted by: Rick Lindstrom    <tigerized(at)gmail.com>



Brother Roy!



The latest KITPLANES    (finally) contains the Experimotive column I

wrote about Dan, you, and    Mark. In this piece I thought I did a pretty

good job of describing the    difference between the different bearing

offerings.



Let me see if I    can get a PDF of the article to you, it might help

correct some of the    perceptions that people hold about price being the

final determining    factor.



Rick



On Thu, Jan 27, 2011 at 2:04 AM, roy szarafinski    <rvickski(at)yahoo.com> wrote:

[quote] Well I need to apologize to Mike and    the list, I was a little chapped about

 opinions being touted as    facts.

 Forgive my satire.

 Roy

 On Jan 26, 2011, at    10:02 PM, John Bolding wrote:



 A little more homework on the    subject might be helpful to understand the

 difference.



    ---

- The Matronics CorvairEngines-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?CorvairEngines-List

tigerized(at)gmail.com
Guest

Posted: Thu Jan 27, 2011 9:47 am Post subject: CorvairEngines-5th bearing

IMHO, if you're engine is already mounted and running, Dan's solution

is, indeed, "better than air" and will prevent your crankshaft from

developing a split personality.

If you're still building your engine, then I'd seriously consider

Roy's solution and take advantage of his line boring skill and his

beautifully machined, servicable bearing.

In the grand scheme of things, the difference in money spent pales

when considering that both solutions will prevent you from a forced

landing, or worse, somewhere.

Again, this is just the opinion of a loud-mouthed journalist.

On Thu, Jan 27, 2011 at 9:02 AM,  <MRus597999(at)aol.com> wrote:

[quote] I apologize for being misinformed. I read the Kitplane article after I

 visited Roy's website. It does appear he has an excellent product and is

 well worth the reasonable price he is asking. It has been some time since I

 visited the site and it looks like he has and is creating some other very

 excellent products for the Corvair conversion. I am still working on

 upgrading my 601xl airframe and am a few months away from finishing it. I

 was already to start on my corvair when the FAA stopped all Zenith builders

 in their tracks. Maybe that's a good thing. I am going to really examine

 Roy's 5th bearing again.

 Mike Russell

 In a message dated 1/27/2011 6:25:09 A.M. Pacific Standard Time,

 tigerized(at)gmail.com writes:

 <tigerized(at)gmail.com>

 Brother Roy!

 The latest KITPLANES (finally) contains the Experimotive column I

 wrote about Dan, you, and Mark. In this piece I thought I did a pretty

 good job of describing the difference between the different bearing

 offerings.

 Let me see if I can get a PDF of the article to you, it might help

 correct some of the perceptions that people hold about price being the

 final determining factor.

 Rick

 On Thu, Jan 27, 2011 at 2:04 AM, roy szarafinski <rvickski(at)yahoo.com> wrote:

> Well I need to apologize to Mike and the list, I was a little chapped

> about

> opinions being touted as facts.

> Forgive my satire.

> Roy

> On Jan 26, 2011, at 10:02 PM, John Bolding wrote:

>

> A little more homework on the subject might be helpful to understand the

> difference.

>

> ---

- The Matronics CorvairEngines-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?CorvairEngines-List

bed(at)mindspring.com
Guest

Posted: Thu Jan 27, 2011 10:09 am Post subject: CorvairEngines-5th bearing

Don't forget to check out the Aeromax bearing. Some good pictures are on a

website www.awesometrvl.com Down at the bottom of the first page.

bed 



--

- The Matronics CorvairEngines-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?CorvairEngines-List

sblack

Joined: 14 Aug 2010
Posts: 21

Posted: Thu Jan 27, 2011 10:24 am Post subject: CorvairEngines-5th bearing

It is interesting to note that pretty much all of the crank failures have 

been in higher performance airplanes like the KR and Sonex (Cleanex)? The 

common theory has been that this is a function of aircraft speed and rpm. I 

have a pet theory (doesn't everyone?) that it is not the airplane, but the 

type of flying that is doing in these cranks where 40 yrs of flying in Piets 

did not. When an airplane is in level flight at low aircraft aoa both the up 

and down going blades see similar blade aoas. When pulling G, such as in a 

tight turn, the down going and up going blade see substantially different 

blade aoa, and hence blade loading (known as P factor). This means that 

every revolution is a brutal bending cycle on the prop. I know from flying 

65hp champs that I tended to be a bit gentle when just tooling around. But 

when flying something with a bit more "hair" it is lots of fun to bank and 

yank. So I think it is the style of flying that has as much to do with the 

crank failures as anything. Aerobatics would be a certain fast track to a 

silent landing.  As for the different 5th bearings, one would need to have 

some specialized knowledge to understand the relationship between bending 

loads and bearing clearance to determine the advantage of the different 

options. Theoretically the line bored precision installation should be 

better, but it might also be that once you have even a crude 5th bearing on 

there the improvement is so vast that the benefit from the extra tolerance 

is in the wash. I think anyone who says they know for sure would have to 

have some hard numbers (i.e. test data) or they are just guessing. It comes 

down to engineering judgement and experience and it will be a few 1000 

flight hrs before this experience starts to be built up. Right now it is 

fortunate that there are several different approaches being taken. If 

failures start to turn up in one type then valuable knowledge will be 

tained. Hopefully any design shortcomings will show up during an inspection 

and not result in an incident.

- The Matronics CorvairEngines-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?CorvairEngines-List

_________________
Scott Black
Montreal
Jodel F11 O-200

Display posts from previous:

	Matronics Email Lists Forum Index -> CorvairEngines-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