Matronics Email Lists :: View topic - propeller shaft alignment w/ cowl

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

propeller shaft alignment w/ cowl

Matronics Email Lists Forum Index -> Europa-List

View previous topic :: View next topic

Author Message

fklein(at)orcasonline.com
Guest

Posted: Sun Jul 18, 2010 10:20 am Post subject: propeller shaft alignment w/ cowl

Gentlemen,



As per previous posts, I'm installing a MPEFIed Sube derivative engine  

and have made my cowls from Alex Bowman's molds. I'm presently  

confronting an issue common to the stock engine installation and am  

looking for some counsel.



I've adhered to the build manual w/ regard to P factor offset, and my  

prop shaft at the flange is spot on the fuselage centerline; however,  

it is about 1/4" high. I'm confident that I can lower it by adjusting  

the thin washer count at the intersection of engine mounting frame  

with the europa mounting frame.



With the fuselage secure in its cradle and my smart level reading zero  

deg. at the port door sill, my reading of the vertical face of the  

prop flange is 89.9 to 90.0 deg., depending on the weather, or time of  

day (who knows?).



I've noted the caution in the manual to ensure that the plane of the  

prop flange is 90 deg. to the waterline. And I'm aware that raising  

the prop flange to center it within the cowl prop opening will affect  

its verticality...perhaps by as much as 0.2 degrees.



As a matter of superficial aesthetics, I'd like to center everything  

up...at the same time, I'm leery of conceding that the plane of the  

prop flange will be "off" by this amount...so my questions are:



	- Would 0.2 degrees off from true vertical of the plane of the prop  

flange be within acceptable limits?, and,



	- Would anyone comment on their experiences in addressing this issue?



One of my mantras has been, "I can only strive to achieve  

perfection"...that's fine enough overall, but I'm sure there are  

individual aspects of our build where perfection is both achievable  

and mandatory.



Fred

- The Matronics Europa-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?Europa-List

budyerly(at)msn.com
Guest

Posted: Sun Jul 18, 2010 12:23 pm Post subject: propeller shaft alignment w/ cowl

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Fred,

 When doing the landing gear frame mods, I had trouble getting the spinner  to align with the cowl on two aircraft and I fudged the elevations of the engine  a bit to make it look pretty (well better).  No difference in anything I  could feel flying.  I think the farthest off was my own at about 1 degree  off vertical, but when laying the level across the head bolt studs it was within  .2 or .3.  I think my digital level is not as accurate in the vertical  mode.  

  

 For what it's worth.  We measure with a micrometer, mark with a grease  pencil and cut it with a hack saw and grind to fit.  There will be  variances.

  

 Bud

 [quote]   ---

- The Matronics Europa-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?Europa-List

fklein(at)orcasonline.com
Guest

Posted: Sun Jul 18, 2010 12:46 pm Post subject: propeller shaft alignment w/ cowl

On Jul 18, 2010, at 1:22 PM, Bud Yerly wrote:

 	  Quote: 	
		  For what it's worth.  We measure with a micrometer, mark with a grease pencil and cut it with a hack saw and grind to fit.  There will be variances. 	




Bud...reminds me of a builder's preferred remodeling spec from an architect, "hammer to fit, paint to match".

Fred

do not archive



 [quote][b]

- The Matronics Europa-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?Europa-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Europa-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