Matronics Email Lists :: View topic - Bolts, Propeller

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

Bolts, Propeller - 6 ea.

Matronics Email Lists Forum Index -> Zenith701801-List

View previous topic :: View next topic

Author Message

Tommy Walker

Joined: 12 Jan 2006
Posts: 442
Location: Anniston, AL 36207

Posted: Sun Aug 09, 2009 6:23 am Post subject: Bolts, Propeller - 6 ea.

I am trying to find some propeller bolts for my new project.  The prop is a Woodcomp 3-blade ground adjustable prop on a Rotax 912.  The bolts that came from the factory are 8x140mm.  I don't think the bolts were sized right at the factory.  The shank or shoulder of the bolt is about 110mm and the prop, hub and spacer take up 125-126 mm.  That leaves the shank about 15 mm too short.  



I talked to Lockwood and they sent me 6 bolts, with exactly the same shoulder.  I called a place that sold Woodcomp props and talked to a fellow there.  I'm having a little trouble getting follow through from him.  



So, what is the opinion about putting the prop bolts back in and torqueing them down.  They were in the engine for 380 hours.  Somehow I don't think that is what I'm going to do.



Does anyone know a reliable source for some bolts?



Thanks,

Do Not Archive

- The Matronics Zenith701801-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?Zenith701801-List

_________________
Tommy Walker
N25A - Anniston, AL

alhays(at)hickoryhillfarm
Guest

Posted: Sun Aug 09, 2009 7:33 am Post subject: Bolts, Propeller - 6 ea.

Tommy,



This doesn't directly answer your question but may help.  As I  

understand it, there should be no shear load on the bolts as the  

driving force is conveyed by large surface area under the pressure  

achieved by maintaining proper torque on the bolts.  As long as the  

shoulder extends through or well into the parts it holds in alignment,  

it may not need to be longer.  Others with more experience or  

credentials may explain it better or direct you to a good reference.



Al Hays

N701GH reserved - Gore, VA



On Aug 9, 2009, at 10:23 AM, Tommy Walker wrote:



 	  Quote: 	
		   

 >



 I am trying to find some propeller bolts for my new project.  The  

 prop is a Woodcomp 3-blade ground adjustable prop on a Rotax 912.   

 The bolts that came from the factory are 8x140mm.  I don't think the  

 bolts were sized right at the factory.  The shank or shoulder of the  

 bolt is about 110mm and the prop, hub and spacer take up 125-126  

 mm.  That leaves the shank about 15 mm too short.

- The Matronics Zenith701801-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?Zenith701801-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Zenith701801-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