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3300 Flywheel assembly

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jeffrey-j-paris(at)excite
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Posted: Sun Nov 27, 2011 3:58 pm Post subject: 3300 Flywheel assembly

Dear Jabiru Engine owners,

   

  It look as if I have sheared some of the teeth on my flywheel starter gear ( see attached picture).  I was having some starting difficulty and voila my starter engaged or disengaged just as the engine was turning over and I pinged some teeth.  Anyways The flywheel assembly for a 3300 is part number 4626073 and is in the neighborhood of 600 dollars to replace.  I was wondering if anyone out in Jabiruland may have a serviceable/usable part from a damaged engine?  I have contacted Jabiru USA and they have to get it from Australia and the factory and don't carry any in stock, moreover if I could save some money with a decent used part I figured I'd try that avenue first.

   

  Thanks for your time and consideration and Happy Thanksgiving to all.

   

  Jeff Paris 2 Jab3300's in the nest- Zenith CH601XLB and a Europa Classic Monowheel

  Rochester, NY

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psm(at)att.net
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Posted: Sun Nov 27, 2011 4:11 pm Post subject: 3300 Flywheel assembly

Hi Jeff,

     

     I wonder if it is possible (acceptable?) to weld the teeth on your     flywheel.Â  It would be a tricky job, but probably a lot less     expensive than buying a new one.Â  It would also be a lot quicker     than any replacement part.

     

     Paul

     Camas, WA

     Zodiac XL, Jab 3300A, just over 20 hours in phase I flight test

     

     

     On 11/27/2011 3:55 PM, Jeffrey J Paris wrote:     [quote]                                        Dear Jabiru Engine owners,

                        Â 

                        It look as if I have sheared some of the teeth on my             flywheel starter gear ( see attached picture). Â I was having             some starting difficulty and voila my starter engaged or             disengaged just as the engine was turning over and I pinged             some teeth. Â Anyways The flywheel assembly for a 3300 is             part number 4626073 and is in the neighborhood of 600             dollars to replace. Â I was wondering if anyone out in             Jabiruland may have a serviceable/usable part from a damaged             engine? Â I have contacted Jabiru USA and they have to get it             from Australia and the factory and don't carry any in stock,             moreover if I could save some money with a decent used part             I figured I'd try that avenue first.

                        Â 

                        Thanks for your time and consideration and Happy             Thanksgiving to all.

                        Â 

                        Jeff Paris 2 Jab3300's in the nest- Zenith CH601XLB and a             Europa Classic Monowheel

                        Rochester, NY

         

       

     [b]

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BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Mon Nov 28, 2011 5:32 am Post subject: 3300 Flywheel assembly

Paul:



That is just about impossible.  It is micro welding and would cost big bucks... At least in the NJ area.  The other problem with that is the weld marks would have to be ground to match the pitch of the engaging teeth.  Follow that up with the loss of a safety shear - The teeth on the ring gear are softer than the teeth of the starter.  DUMB... It should be the other way around but the starter manufacture does not want to be responsible of a failure.  And if the ring gear was harder it would also be heavier - Something the builder does not want.  SOOoooo pick a failure point and PAY FOR IT!

 



The question IS:  Why did it fail?

Barry



On Sun, Nov 27, 2011 at 7:09 PM, Paul Mulwitz <psm(at)att.net (psm(at)att.net)> wrote:

 [quote]                   Hi Jeff,

     

     I wonder if it is possible (acceptable?) to weld the teeth on your     flywheel.  It would be a tricky job, but probably a lot less     expensive than buying a new one.  It would also be a lot quicker     than any replacement part.

     

     Paul

     Camas, WA

     Zodiac XL, Jab 3300A, just over 20 hours in phase I flight test



     

     

     On 11/27/2011 3:55 PM, Jeffrey J Paris wrote:      	  Quote: 	
		                                          Dear Jabiru Engine owners,

                         

                        It look as if I have sheared some of the teeth on my             flywheel starter gear ( see attached picture).  I was having             some starting difficulty and voila my starter engaged or             disengaged just as the engine was turning over and I pinged             some teeth.  Anyways The flywheel assembly for a 3300 is             part number 4626073 and is in the neighborhood of 600             dollars to replace.  I was wondering if anyone out in             Jabiruland may have a serviceable/usable part from a damaged             engine?  I have contacted Jabiru USA and they have to get it             from Australia and the factory and don't carry any in stock,             moreover if I could save some money with a decent used part             I figured I'd try that avenue first.

                         

                        Thanks for your time and consideration and Happy             Thanksgiving to all.

                         

                        Jeff Paris 2 Jab3300's in the nest- Zenith CH601XLB and a             Europa Classic Monowheel

                        Rochester, NY

         

       

     



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[b]

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