Matronics Email Lists :: View topic - Locktite on spinner bolt.

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

Locktite on spinner bolt.
Goto page 1, 2 Next

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Thu Apr 12, 2007 11:06 am Post subject: Locktite on spinner bolt.

I have flown my plane a couple times now and retorqued the prop.  I want to put the spinner on now.  It is a warp drive with the skull cap spinner.  It is held on by one 8mm bolt.  I have looked and looked for my instructions but can't find them.  What type (color)of locktite should I put on the spinner bolt?

Tom Jones

neflyer48(at)cableone.net
Guest

Posted: Thu Apr 12, 2007 3:54 pm Post subject: Locktite on spinner bolt.

I have the same prop and spinner. I didn't put anything on the bolt and have 

never had any problem coming loose in 860 hrs. I have taken it off a few 

times to check the prop to hub bolts on annuals.



Jerry Kohles M3 912



---

Tom Jones

Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA

Posted: Thu Apr 12, 2007 4:25 pm Post subject: Re: Locktite on spinner bolt.

Thanks Jerry.  One difference that might be important is my prop turns left hand.  I wonder if that might be more inclined to loosen the bolt?

Tom Jones

rjdaugh

Joined: 30 Aug 2006
Posts: 195

Posted: Thu Apr 12, 2007 5:23 pm Post subject: Locktite on spinner bolt.

Tom,

My spinner is fiberglass with three bolts.  I use the red stuff at the

recommendation of the spinner manufacturer.  I can try to get the number if

you need it.



I do think it is a good idea to use something.



Randy 



.           

--

_________________
Randy
Kitfox 5/7 912S
Black Hills, South Dakota

Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Fri Apr 13, 2007 2:22 am Post subject: Locktite on spinner bolt.

While on the subject of spinners ... I have a Jabiru engine with a Jabiru prop and a Jabiru spinner; glassfiber with six screws. It works fine but when I see it with the engine at idle, I can see it wobbling. So, I try to get it in-line with the help of a reference stick, a pencil line, marking the "offending" side, loosening the screws (the holes in the glassfiber are a little bit greater for that purpose) moving slightly the spinner, then screw again. 

But I never manage to get it perfect, it always wobbles a bit, however I work on it. I remove the spinner about 4 times per year, to check the prop bolts torquing.



Do your spinner spin perfectly smooth or do you also have a slight wobble? Thanks.



While I am at it:

A big cheer for the departing list moderators and another one for the new ones!



Cheers,

Michel

<pre><b><font size  color="#000000" face="courier new,courier">

_________________
Kitfox 3 - Jabiru 2200

jose_m_toro(at)yahoo.com
Guest

Posted: Fri Apr 13, 2007 6:00 am Post subject: Locktite on spinner bolt.

Hola Michel:



When I had the 582, my spinner also had a slight wobble.  That never was a problem!



saludos!



José



---

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Fri Apr 13, 2007 7:26 am Post subject: Locktite on spinner bolt.

At 03:21 AM 4/13/2007, you wrote:

 	  Quote: 	
		  Do your spinner spin perfectly smooth or do you also have a slight 

wobble? Thanks.


	


I have a 10" UHS fiberglass spinner. The tip runs true, but the 

trailing edge wobbles all over. I don't think the mounting flange was 

tooled very well.

Guy Buchanan

San Diego, CA

K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

Michel

Joined: 10 Jan 2006
Posts: 966
Location: Norway

Posted: Fri Apr 13, 2007 12:44 pm Post subject: Locktite on spinner bolt.

Thanks for your replies, Jose and Guy.



On Apr 13, 2007, at 5:24 PM, Guy Buchanan wrote:

 	  Quote: 	
		   I don't think the mounting flange was tooled very well.


	


Hum, thinking of it, my mounting flange is also glassfiber and maybe it 

is not too well centred either. I didn't think of that. Will check.



Cheers,

Michel



do not archive

_________________
Kitfox 3 - Jabiru 2200

GONER752(at)aol.com
Guest

Posted: Fri Apr 13, 2007 12:57 pm Post subject: Locktite on spinner bolt.

Michel,

  Just a thought here. Have you tried this. Remove the spinner and  place it big end down on a flat surface, then lay a pencil on the surface( you  may have to block up the pencil to the location of the holes) and then simply  slide the pencil on the surface as you draw a line around the spinner. That  should give you an accurate "reference" line for the screws. Providing of course  the spinner is symmetrical in relation to it's base,or big end.

 Regards,

 Greg G.   

 375KL

Mod  2

582





See what's free at AOL.com. 

  [quote][b]

Lynn Matteson

Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan

Posted: Fri Apr 13, 2007 2:04 pm Post subject: Locktite on spinner bolt.

Michel and others-

I mounted my mounting flange in the lathe and made a fine cut on the  

flange so as to minimize the runout. I couldn't take much off, as the  

fiberglass is thin.



Lynn

On Apr 13, 2007, at 4:44 PM, Michel Verheughe wrote:



 	  Quote: 	
		   



 Thanks for your replies, Jose and Guy.



 On Apr 13, 2007, at 5:24 PM, Guy Buchanan wrote:

> I don't think the mounting flange was tooled very well.



 Hum, thinking of it, my mounting flange is also glassfiber and  

 maybe it is not too well centred either. I didn't think of that.  

 Will check.



 Cheers,

 Michel



 do not archive

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM

rexinator(at)gmail.com
Guest

Posted: Fri Apr 13, 2007 7:48 pm Post subject: Locktite on spinner bolt.

Wait a sec!  If that's a Aluminum spinner you don't want to use a lead 

pencil right? Something about potential corrosion I think.

Rex

Colorado



GONER752(at)aol.com wrote:



 	  Quote: 	
		   Michel,

  Just a thought here. Have you tried this. Remove the spinner and 

 place it big end down on a flat surface, then lay a pencil on the 

 surface( you may have to block up the pencil to the location of the 

 holes) and then simply slide the pencil on the surface as you draw a 

 line around the spinner. That should give you an accurate "reference" 

 line for the screws. Providing of course the spinner is symmetrical in 

 relation to it's base,or big end.

 Regards,

 Greg G.

  

 375KL

 Mod 2

 582

GONER752(at)AOL.COM
Guest

Posted: Sat Apr 14, 2007 5:15 pm Post subject: Locktite on spinner bolt.

Rex,

  Most "lead" pencils today are actually graphite. I am not personally  aware of aluminum corrosion being caused by drawing on it with a pencil, but  then, what I know is always subject to correction or education.

 Regards,

 Greg G.   

 375KL

Mod  2

582



  

 do not archive



See what's free at AOL.com. 

  [quote][b]

kirkhull(at)kc.rr.com
Guest

Posted: Sat Apr 14, 2007 6:12 pm Post subject: Locktite on spinner bolt.

All I know about it is that in A&P school it was strictly forbidden to use a pencil on any aircraft aluminum but that was about 15 years ago.  Also when doing inspections at  the airline we would look to be sure that no one was using a pencil.  

         

  

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of GONER752(at)aol.com

 Sent: Saturday, April 14, 2007 8:15 PM

 To: kitfox-list(at)matronics.com

 Subject: Re: Locktite on spinner bolt.  

  

     

Rex,  

    

 Most "lead" pencils today are actually graphite. I am not personally aware of aluminum corrosion being caused by drawing on it with a pencil, but then, what I know is always subject to correction or education.  

    

Regards,  

    

Greg G.     

   

    

375KL

 Mod 2

 582  

  

    

   

    

do not archive  

  



 

         

  

See what's free at AOL.com.   

   	  Quote: 	
		    http://www.matronics.com/Navigator?Kitfox-List 	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4

       [quote][b]

rjdaugh

Joined: 30 Aug 2006
Posts: 195

Posted: Sat Apr 14, 2007 7:46 pm Post subject: Locktite on spinner bolt.

Hey, there must be a metallurgist out there.  I always thought it was that the graphite scratched the oxide surface off of the aluminum and left a spot for corrosion.  But why would that be worse than scratching the oxide off with a scotch brite pad?  Cause water or salt can displace the graphite?   I really don’t know.    

   

Or is it just an old wives tale?  

   

Randy – looking for enlightenment.  

     

.             

  

         

  

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of kirk hull

 Sent: Saturday, April 14, 2007 8:12 PM

 To: kitfox-list(at)matronics.com

 Subject: RE: Locktite on spinner bolt.  

  

   

All I know about it is that in A&P school it was strictly forbidden to use a pencil on any aircraft aluminum but that was about 15 years ago.  Also when doing inspections at  the airline we would look to be sure that no one was using a pencil.  

         

  

From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of GONER752(at)aol.com

 Sent: Saturday, April 14, 2007 8:15 PM

 To: kitfox-list(at)matronics.com

 Subject: Re: Locktite on spinner bolt.  

  

     

Rex,  

    

 Most "lead" pencils today are actually graphite. I am not personally aware of aluminum corrosion being caused by drawing on it with a pencil, but then, what I know is always subject to correction or education.  

    

Regards,  

    

Greg G.     

   

    

375KL

 Mod 2

 582  

  

    

   

    

do not archive  

  

           

  

  

See what's free at AOL.com.   

   	  Quote: 	
		     	
[/b]http://www.matronics.com/Navigator?Kitfox-List 	  Quote: 	
		  [b] 	
http://forums.matronics.com[/b] 	  Quote: 	
		  [b]    	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4 	  Quote: 	
		   	
5 	  Quote: 	
		   	
6 	  Quote: 	
		   	
7 	  Quote: 	
		   	
8 	  Quote: 	
		   	
9 	  Quote: 	
		   	
0

       [quote][b]

_________________
Randy
Kitfox 5/7 912S
Black Hills, South Dakota

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Sun Apr 15, 2007 4:35 am Post subject: Locktite on spinner bolt.

You are  right not to mark on aluminium with a pencil... you are also right that pencil  lead is not lead but graphite, a form of carbon.  Generally if I'm going to  mark a piece of aluminium I'll use a pilot marker.  I make sure it doesn't  have carbon in the pigment.  Using a scribe can work.

  

 BTW  Never sand aluminium with standard sand paper that will also cause the plate to  corrode.  Use only aluminium oxide paper.  I won't go near the  different colours of scotch brite (that one has been flogged to death many  times) but obviously checking which ones use an aluminium oxide are  preferred.

  

  

 

Noel [quote]   

   --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Bob

Joined: 24 Oct 2006
Posts: 89
Location: Damascus, Maryland, USA

Posted: Sun Apr 15, 2007 5:02 am Post subject: Re: Locktite on spinner bolt.

I personally know of two airliners which depressurized at altitude when big flaps of fuselage skin opened.  (Airliners flex the skin between frames and stringers every time the cabin pressurizes.)  Markings on the aluminum skins of each to lay-out repair areas had been done with pencil in one and with a scribe on the other.  I also saw a float that had been sitting behind a hangar for years and somebody had written on it.  The letters had corroded into the skin.  Pencils and scribes should not be used on aluminum.



Michel, to center the spinner you might simply pull your spark plugs, put masking tape on the end of the spinner, and put a marker on the end of a stick so it touches the spinner.  Spin the prop by hand and the marker will make a circle on the tape.  You can shift the spinner in the mounting bolts until the circle is centered then toss the tape.  A work-mate was flying a Piper Seneca that threw a spinner about two years ago and you can't believe the damage it did when it hit the fuselage.  Even the rubber engine shock mounts had to be replaced from the side loads in ripping off.  Make sure it is secure when done! 



Bob

_________________
Remember that internet advice may only be worth what you pay.

lcfitt(at)sbcglobal.net
Guest

Posted: Sun Apr 15, 2007 6:15 am Post subject: Locktite on spinner bolt.

Also in the instruction manual I received from SS in 1993 we were advised to 

use a sharpie as pencil lead could be a corrosion initiator - this was in 

laying out the wing rib position on the wing jig.  Maybe those that had the 

quick build wing option missed out on this bit of information.



Lowell



---

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Sun Apr 15, 2007 6:26 am Post subject: Locktite on spinner bolt.

I just thought of another no-no  that is using any form of diamond grit, including some grinding pastes.   Diamond is a crystalline form of carbon.

  

  

 

Noel [quote]   

   --

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Mdkitfox(at)aol.com
Guest

Posted: Sun Apr 15, 2007 12:57 pm Post subject: Locktite on spinner bolt.

In a message dated 4/14/2007 11:48:20 P.M. Eastern Daylight Time,  

rjdaugh(at)rapidnet.com writes:



Hey, there must be a  metallurgist out there.  I always thought it was that 

the graphite  scratched the oxide surface off of the aluminum and left a spot 

for  corrosion.  But why would that be worse than scratching the oxide off  

with a scotch brite pad?  Cause water or salt can displace the  graphite?   I 

really donâ€™t know.   

Or is it just an old  wives tale?

Randy,

 

It's not a wives tale.  I was only an aero engineer at Kennedy Space  Center, 

not a metallurgist, but I saw a mechanic draw a line with a pencil  on a 

piece of aluminum used on the Saturn V.  I brought this to his  attention and he 

laughed and gave me a rough time since I was just out of school  and the new 

kid on the block.

 

Long story short, for a $5 bet, we put 2 identical pieces of aluminum in 2  

pull testers.  One was scribed with a pencil line the other wasn't.   During 

the pull, the piece scribed with the pencil cracked right along the drawn  line 

and the other piece did not break.  Could it have been luck? I don't  think 

so, I had performed that same test in college and it did the same thing  more 

than once.

 

The carbon in the lead or graphite sets up stress corrosion in the  aluminum 

and when you place the part under stress it doesn't take long for the  crack 

to occur.  It will even follow gentle curves.  The humidity in  the air and 

especially in a salty environment like the beach will cause this  corrosion to 

accelerate quickly.  Just leave a piece of painted chrome  molly steel outside 

for a day and see how quickly corrosion attacks it.

 

Rick

Series V Speedster - N39RW, Serial Number 1

DO NOT ARCHIVE



************************************** See what's free at http://www.aol.com

smokey_bear_40220(at)yaho
Guest

Posted: Sun Apr 15, 2007 1:26 pm Post subject: Locktite on spinner bolt.

Hey Rick,



I live near the Space Coast now.  Worried about

corrosion all the time.



You probably know about drawing on a jet engine

exhaust with pencil.  Very shortly you can get a

crack, or even cut out a circle or design you drew.  I

would think piston engine exhaust would do the same if

it was hot enough.



The carbon jet engine exhaust does not do it, only the

pencil mark.



Hide the pencils!



Kurt S.



Do not archive



 	  Quote: 	
		   Randy,

  

 It's not a wives tale.  I was only an aero engineer

 at Kennedy Space  Center, 

 not a metallurgist, but I saw a mechanic draw a line

 with a pencil  on a 

 piece of aluminum used on the Saturn V.  I brought

 this to his  attention and he 

 laughed and gave me a rough time since I was just

 out of school  and the new 

 kid on the block.

  

 Long story short, for a $5 bet, we put 2 identical

 pieces of aluminum in 2  

 pull testers.  One was scribed with a pencil line

 the other wasn't.   During 

 the pull, the piece scribed with the pencil cracked

 right along the drawn  line 

 and the other piece did not break.  Could it have

 been luck? I don't  think 

 so, I had performed that same test in college and it

 did the same thing  more 

 than once.

  

 The carbon in the lead or graphite sets up stress

 corrosion in the  aluminum 

 and when you place the part under stress it doesn't

 take long for the  crack 

 to occur.  It will even follow gentle curves.  The

 humidity in  the air and 

 especially in a salty environment like the beach

 will cause this  corrosion to 

 accelerate quickly.  Just leave a piece of painted

 chrome  molly steel outside 

 for a day and see how quickly corrosion attacks it.

  

 Rick

 Series V Speedster - N39RW, Serial Number 1

 DO NOT ARCHIVE


	


__________________________________________________

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-List	All times are GMT - 8 Hours Goto page 1, 2 Next
Page 1 of 2

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