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Sensenich composite prop on Jab3300

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chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Tue Jan 27, 2009 1:27 am Post subject: Sensenich composite prop on Jab3300

Hi all 

I have a new Ground adjustable Sensenich prop on my Zodiac XL. I know about metal props, and wooden props but Composite ones??? Where can I get repair info and limits on these props?  I dont live in the USA and there is nothing really like this on the Sensenich web site and  I dont want to send it back to the USA for what may be a repairable stone chip, but then again, what is the limit when I will need to do this??

Chris 

Australia.

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aslsa.rng(at)gmail.com
Guest

Posted: Tue Jan 27, 2009 4:09 am Post subject: Sensenich composite prop on Jab3300

Chris, For small chips you can use the classic superglue and baking soda or microballons as fill. It's messy, but it will work for small stone chips and has the advantage of being instant. All you do is put a drop of superglue in the dent and pour in the baking soda or microballons as filler. If you cover with wax paper pulled tightly around the blade, there's almost no need for sanding. If it doesn't quite fill, just do it again. For slightly larger dents use JB Weld. Takes 24 hours to cure, and again use wax paper drawn tightly around the blade to shape the fill and minimize sanding.

For large dents where there is a fair amount of damage to the carbon fiber it's probably a toss up whether to send the blade back to the USA for a fix or just buy another blade.

 I've used both these fixes on foam core, carbon fiber blades for my Powerfin prop. One, a superglue fix, has almost a hundred hours on it and is still solid.

Rick



 On Tue, Jan 27, 2009 at 3:27 AM, chris Sinfield <chris_sinfield(at)yahoo.com.au (chris_sinfield(at)yahoo.com.au)> wrote:

[quote] --> JabiruEngine-List message posted by: "chris Sinfield" <chris_sinfield(at)yahoo.com.au (chris_sinfield(at)yahoo.com.au)>

 

 Hi all

 I have a new Ground adjustable Sensenich prop on my Zodiac XL. I know about metal props, and wooden props but Composite ones??? Where can I get repair info and limits on these props?  I dont live in the USA and there is nothing really like this on the Sensenich web site and  I dont want to send it back to the USA for what may be a repairable stone chip, but then again, what is the limit when I will need to do this??

  Chris

 Australia.

 

 

 

 

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jeromedelamare(at)free.fr
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Posted: Tue Jan 27, 2009 4:32 am Post subject: Sensenich composite prop on Jab3300

Chris,



You can look at this great eea video :



http://link.brightcove.com/services/link/bcpid1431564069/bclid1432781645/bct

id2111048001



Jérôme

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sonex229(at)windstream.ne
Guest

Posted: Tue Jan 27, 2009 6:56 am Post subject: Sensenich composite prop on Jab3300

Chris, Why don't you send this e-mail to Sensenich? You will get a straight 

answer from them, they are good people to work with. Placing this question 

here is going to get you a bunch of opinions, from people that do not make 

props! Send your question to the attention of Charlie at Sensenich, he can 

give you a proper answer.. Regards Wayne

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Float Flyr

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

Posted: Tue Jan 27, 2009 9:26 am Post subject: Sensenich composite prop on Jab3300

Check out the EAA site

 

http://www.eaa.org/video/homebuilders.html?videoId=8601416001  



they have a video on about repairing nicks in composite props.  Also contact

the manufacturer and ask for assistance...  They may help you.



Noel



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craig(at)craigandjean.com
Guest

Posted: Tue Jan 27, 2009 1:22 pm Post subject: Sensenich composite prop on Jab3300

 	  Quote: 	
		  From Sensenich at http://www.sensenich.com/misc/LB2EK.pdf (this may not be

applicable to your model of composite prop):
	




"Minor Blade Repairs -- To be accomplished by an A&P or IA

Minor impact damage, nicks, and gouges in composite material of blade not to

exceed .025 depth and or .5 square inches of surface area: Fill with high

strength epoxy resin West System 105/206 or equivalent (NOT 5 minute epoxy)

thickened with aerospace filler material, such as Colloidal Silica 406,

Cabosil, or equivalent. Sand smooth when dry.



Wear and/or roughness of metal erosion shield on blade leading edge: If

metal is not worn through, use 220 grit sandpaper or coarse scotch pad to

remove roughness or minor pitting, being careful to not grind through the

erosion shield. Polish with fine scotch pad or equivalent to remove

scratches.



Paint wear on blade:

NOTE, wear is inevitable on the metal erosion shield. The wear rate depends

on several factors, including high operating RPM's in rain or sandy areas,

FOD on taxiways and runways, etc. Touch up paint using Tempo A150 Flat

Black, A151 Gray (matches the hub color), A152 White, or equivalent.

Sensenich Silver (does not match your hub color) is the original blade color

and is available from the factory. When using touch up paint, keep in mind

that paint can cause an out of balance situation so touch up should be kept

to a minimum."



-- Craig



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dhonabach

Joined: 19 Jan 2009
Posts: 13

Posted: Tue Jan 27, 2009 2:13 pm Post subject: Sensenich composite prop on Jab3300

Craig,



Thanks for posting!

Don

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checkpoint2(at)COMCAST.NE
Guest

Posted: Tue Jan 27, 2009 2:23 pm Post subject: Sensenich composite prop on Jab3300

I have a Sensenich Adjustable with over a 100 hrs, the person to

contact is Charley Denny (charleyd(at)sensenchprop.com).  He builds them!

Bob Haas. 

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