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Unusual ring gear tooth wear

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HCRV6(at)comcast.net
Guest

Posted: Thu Aug 24, 2006 9:43 pm Post subject: Unusual ring gear tooth wear

Engine Gurus,

  

 I have about 255 hours total time on my factory new O-360A1A and have noticed that the wear pattern on the flywheel ring gear looks as if the starter gear is engaging only about the top 1/16 inch or less of each ring gear tooth.  Also it looks as if the teeth on the ring gear are wearing slightly rounded, with slightly more wear on the aft part.  The engine was delivered from Van's with a Sky-Tec starter that otherwise seems to work great and really spins up the engine on startup.  

  

 Can anyone comment on this type of ring gear wear pattern as to whether it is normal or do I have a problem developing?  Also, it possible that my starter could have the wrong tooth size for the ring gear and have been operating reasonably well for this many hours?

  

 Appreciate any thoughts on this.

 --

Harry Crosby 

RV-6 N16CX, 254 hours

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Morocketman(at)aol.com
Guest

Posted: Fri Aug 25, 2006 11:19 am Post subject: Unusual ring gear tooth wear

Call Les at Skytec.  He is wonderful to work with, and has all the knowledge you will need.  Doesn't sound good to me.  Les Featherston  MO Rocketman

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rocketbob(at)gmail.com
Guest

Posted: Fri Aug 25, 2006 12:37 pm Post subject: Unusual ring gear tooth wear

This is a problem I've seen with Sky-Tec starters on at least three occasions, not enough ring gear engagement.  If you call them of course it won't be their fault.  Once you can't get the thing to crank over the first compression, then they'll blame the engine manufacturer, then your wiring, your battery, your solenoid, your mother, etc.  I used to poo-poo B&C's because of the cost until I did some horsetrading and got one on a trade.  Now without question I believe that it is the best starter, with the new Sky-Tec high-torque starter in close second.  They're both about the same price ($550). The B&C is geared slightly taller which helps it overcome the first compression stroke with ease, just a little bit better (but slower) than the high-torque inline starter from Sky-Tec, but not by much.  A friend and I did testing on his F1 of three different starters (Sky-Tec Flyweight, my B&C, and the Sky-Tec high torque model).  The Flyweight's planetary gearing (which is plastic!) can only be rebuilt by them; as far as cranking performance goes it was in dead-last place.  One big advantage of the B&C is that it is rebuildable by your local starter shop.  I rebuilt the used one I got to like new condition for $38.00.   BTW the better two of the three starters fully engaged the ring gear. 



Regards,

Bob Japundza

RV-6 flying F1 under const.



On 8/25/06, HCRV6(at)comcast.net (HCRV6(at)comcast.net) < HCRV6(at)comcast.net (HCRV6(at)comcast.net)> wrote:[quote] Engine Gurus,

  

 I have about 255 hours total time on my factory new O-360A1A and have noticed that the wear pattern on the flywheel ring gear looks as if the starter gear is engaging only about the top 1/16 inch or less of each ring gear tooth.  Also it looks as if the teeth on the ring gear are wearing slightly rounded, with slightly more wear on the aft part.  The engine was delivered from Van's with a Sky-Tec starter that otherwise seems to work great and really spins up the engine on startup.   

  

 Can anyone comment on this type of ring gear wear pattern as to whether it is normal or do I have a problem developing?  Also, it possible that my starter could have the wrong tooth size for the ring gear and have been operating reasonably well for this many hours? 

  

 Appreciate any thoughts on this.

 --

Harry Crosby 

RV-6 N16CX, 254 hours

    	  Quote: 	
		  



the many List utilities such as the Subscriptions page,

ronics.com/Navigator?RV-List" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">

http://www.matronics.com/Navigator?RV-List

k" onclick="return top.js.OpenExtLink(window,event,this)">

http://forums.matronics.com

"return top.js.OpenExtLink(window,event,this)">

http://wiki.matronics.com

                     -Matt Dralle, List Admin.

_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.matronics.com/contribution

=========== 	


 

[b]

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HCRV6(at)comcast.net
Guest

Posted: Fri Aug 25, 2006 9:09 pm Post subject: Unusual ring gear tooth wear

Thanks Bob, I appreciate the info.

  

 --

Harry Crosby 

RV-6 N16CX, 254 hours

  

 [quote]-------------- Original message -------------- 

From: "Bob J." <rocketbob(at)gmail.com> 

This is a problem I've seen with Sky-Tec starters on at least three occasions, not enough ring gear engagement.  If you call them of course it won't be their fault.  Once you can't get the thing to crank over the first compression, then they'll blame the engine manufacturer, then your wiring, your battery, your solenoid, your mother, etc.  I used to poo-poo B&C's because of the cost until I did some horsetrading and got one on a trade.  Now without question I believe that it is the best starter, with the new Sky-Tec high-torque starter in close second.  They're both about the same price ($550). The B&C is geared slightly taller which helps it overcome the first compression stroke with ease, just a little bit better (but slower) than the high-torque inline start  er fro m Sky-Tec, but not by much.  A friend and I did testing on his F1 of three different starters (Sky-Tec Flyweight, my B&C, and the Sky-Tec high torque model).  The Flyweight's planetary gearing (which is plastic!) can only be rebuilt by them; as far as cranking performance goes it was in dead-last place.  One big advantage of the B&C is that it is rebuildable by your local starter shop.  I rebuilt the used one I got to like new condition for $38.00.   BTW the better two of the three starters fully engaged the ring gear. 



Regards,

Bob Japundza

RV-6 flying F1 under const.



 On 8/25/06, HCRV6(at)comcast.net (HCRV6(at)comcast.net) < HCRV6(at)comcast.net (HCRV6(at)comcast.net)> wrote:  	  Quote: 	
		     Engine Gurus,

  

 I have about 255 hours total time on my factory new O-360A1A and have noticed that the wear pattern on the flywheel ring gear looks as if the starter gear is engaging only about the top 1/16 inch or less of each ring gear tooth.  Also it looks as if the teeth on the ring gear are wearing slightly rounded, with slightly more wear on the aft part.  The engine was delivered from Van's with a Sky-Tec starter that otherwise seems to work great and really spins up the engine on startup.  

  

 Can anyone comment on this type of ring gear wear pattern as to whether it is normal or do I have a problem developing?  Also, it possible that my starter could have the wrong tooth size for the ring gear and have been operating reasonably well for this many hours? 

  

 Appreciate any thoughts on this.

 --

Harry Crosby 

RV-6 N16CX, 254 hours

 	  Quote: 	
		  



the many List utilities such as the Subscriptions page,

ronics.com/Navigator?RV-List" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">

http://www.matronics.com/Navigator?RV-List

k" onclick="return top.js.OpenExtLink(window,event,this)">

http://forums.matronics.com

"return top.js.OpenExtLink(window,event,this)">

http://wiki.matronics.com

                     -Matt Dralle, List Admin.

_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.matronics.com/contribution

=========== 	






	
[b]

- The Matronics RV-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?RV-List

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