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IO-540 Slick Mag

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Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Mon May 28, 2012 10:11 am Post subject: IO-540 Slick Mag

I am in Albany, OR, with a mag problem. Lightspeed works fine but The new Slick with only 20 hours on it is not sparking. Opened it up and everything looks fine, points open and close, rotor turns, and the brush looks ok but no spark. Even got brave and held it when I. Turned it over but no spark. Only good thing is there are several RV's here and they are a great help. Any ideas would be appreciated.

Albert Gardner

N991RV

Usually Yuma but OR for a while.

_________________
RV-9A N872RV
RV-10 N991RV

pilotdds(at)aol.com
Guest

Posted: Mon May 28, 2012 10:15 am Post subject: IO-540 Slick Mag

can loan you a bendix in stockton ca can ship tommorrow morn-jim

 

 

   --

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Mon May 28, 2012 4:34 pm Post subject: Re: IO-540 Slick Mag

Can you get an ohmmeter across the coil? I don't know what it should read but "infinity" is wrong.



I think your "hold it in your hand test" will not work, even with a good mag, unless you have impulse couplings. The standard IO-540 sold by Vans does not have them, it uses Slick Start instead.



Prior to flying I pulled all the plugs so there was no compression; laid one plug, hooked up, on a good ground; and then rotated the prop as fast as I could by hand. With no compression that's pretty fast. But it wasn't fast enough to generate a spark. 



(If the battery dies so much that the Slick start won't run, you can't hand prop this engine).

_________________
Bob Turner
RV-10 QB

dave.saylor.aircrafters(a
Guest

Posted: Mon May 28, 2012 4:37 pm Post subject: IO-540 Slick Mag

Try disconnecting the P-Lead.  Maybe it's shorted to ground somewhere.

 Just remember the mag will be hot.



Dave Saylor

831-750-0284 CL

On Mon, May 28, 2012 at 11:09 AM,  <ibspud(at)roadrunner.com> wrote:

 	  Quote: 	
		   



 I am in Albany, OR, with a mag problem. Lightspeed works fine but The new Slick with only 20 hours on it is not sparking. Opened it up and everything looks fine, points open and close, rotor turns, and the brush looks ok but no spark. Even got brave and held it when I. Turned it over but no spark. Only good thing is there are several RV's here and they are a great help. Any ideas would be appreciated.

 Albert Gardner

 N991RV

 Usually Yuma but OR for a while.

rv10pro(at)gmail.com
Guest

Posted: Mon May 28, 2012 4:52 pm Post subject: IO-540 Slick Mag

A shorted Ground or P lead can create a lower resistance path.  I have seen two different Vans/Aircraft Spruce switches go "tango uniform". 

Johnny Horizon On May 28, 2012 5:40 PM, "Dave Saylor" <dave.saylor.aircrafters(at)gmail.com (dave.saylor.aircrafters(at)gmail.com)> wrote:[quote] --> RV10-List message posted by: Dave Saylor <dave.saylor.aircrafters(at)gmail.com (dave.saylor.aircrafters(at)gmail.com)>

 

 Try disconnecting the P-Lead.  Maybe it's shorted to ground somewhere.

  Just remember the mag will be hot.

 

 Dave Saylor

 [url=tel:831-750-0284]831-750-0284[/url] CL

 

 

 On Mon, May 28, 2012 at 11:09 AM,  <ibspud(at)roadrunner.com (ibspud(at)roadrunner.com)> wrote:

 > --> RV10-List message posted by: <ibspud(at)roadrunner.com (ibspud(at)roadrunner.com)>

 >

 > I am in Albany, OR, with a mag problem. Lightspeed works fine but The new Slick with only 20 hours on it is not sparking. Opened it up and everything looks fine, points open and close, rotor turns, and the brush looks ok but no spark. Even got brave and held it when I. Turned it over but no spark. Only good thing is there are several RV's here and they are a great help. Any ideas would be appreciated.

  > Albert Gardner

 > N991RV

 > Usually Yuma but OR for a while.

 >

 >

 >

 >

 

 

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 http://forums.matronics.com

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 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

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 [b]

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon May 28, 2012 5:01 pm Post subject: IO-540 Slick Mag

I have also had a P lead internally shorting to the shield, causing a dead mag.



On Mon, May 28, 2012 at 5:51 PM, John Cox <rv10pro(at)gmail.com (rv10pro(at)gmail.com)> wrote:

 [quote]

A shorted Ground or P lead can create a lower resistance path.  I have seen two different Vans/Aircraft Spruce switches go "tango uniform".  

Johnny Horizon On May 28, 2012 5:40 PM, "Dave Saylor" <dave.saylor.aircrafters(at)gmail.com (dave.saylor.aircrafters(at)gmail.com)> wrote: 

 	  Quote: 	
		   --> RV10-List message posted by: Dave Saylor <dave.saylor.aircrafters(at)gmail.com (dave.saylor.aircrafters(at)gmail.com)>

 

 Try disconnecting the P-Lead.  Maybe it's shorted to ground somewhere.

  Just remember the mag will be hot.

 

 Dave Saylor

 [url=tel:831-750-0284]831-750-0284[/url] CL

 

 

 On Mon, May 28, 2012 at 11:09 AM,  <ibspud(at)roadrunner.com (ibspud(at)roadrunner.com)> wrote:

 > --> RV10-List message posted by: <ibspud(at)roadrunner.com (ibspud(at)roadrunner.com)>

 >

 > I am in Albany, OR, with a mag problem. Lightspeed works fine but The new Slick with only 20 hours on it is not sparking. Opened it up and everything looks fine, points open and close, rotor turns, and the brush looks ok but no spark. Even got brave and held it when I. Turned it over but no spark. Only good thing is there are several RV's here and they are a great help. Any ideas would be appreciated.

   > Albert Gardner

 > N991RV

 > Usually Yuma but OR for a while.

 >

 >

 >

 >

 

 



 ===========

 arget="_blank">http://www.matronics.com/Navigator?RV10-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 	


   	  Quote: 	
		  



get="_blank">http://www.matronics.com/Navigator?RV10-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	




[b]

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

robin(at)PaintTheWeb.com
Guest

Posted: Mon May 28, 2012 5:19 pm Post subject: IO-540 Slick Mag

I don't even want to hand prop a model airplane.



Robin

Do not archive



Sent from the new iPad



On May 28, 2012, at 5:42 PM, "Bob Turner" <bobturner(at)alum.rpi.edu> wrote:



 	  Quote: 	
		   

 

 Can you get an ohmmeter across the coil? I don't know what it should read but "infinity" is wrong.

 

 I think your "hold it in your hand test" will not work, even with a good mag, unless you have impulse couplings. The standard IO-540 sold by Vans does not have them, it uses Slick Start instead.

 

 Prior to flying I pulled all the plugs so there was no compression; laid one plug, hooked up, on a good ground; and then rotated the prop as fast as I could by hand. With no compression that's pretty fast. But it wasn't fast enough to generate a spark. 

 

 (If the battery dies so much that the Slick start won't run, you can't hand prop this engine).

 

 --------

 Bob Turner

 RV-10 QB

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=374115#374115

arplnplt(at)gmail.com
Guest

Posted: Mon May 28, 2012 7:18 pm Post subject: IO-540 Slick Mag

Early on, I think for my second flight, I went to start the engine and it would not fire.  I had started the engine many times before and had flown once.  Pulled plugs and found no spark when cranking.  Pulled the mag and found the retard contact point terminal had worn through and shorted to the side of the mag case.  This was hard to spot at first and took very close inspection.  I had to bend the wire slightly to see the shine of the terminal metal through the heat shrink.  You can see in the photo the connector heat shrink on the orange wire touching the case.  I am sure vibration caused it to wear through the heat shrink and grounded it to the case.  I reinstalled the connector with new heat shrink and bent the tab slightly to clear the case.  This is how it came as installed by Slick.  



After the repair she fired right up.   So far so good.

G3 ignition does the job of Slick Start.



Dave Leikam





On May 28, 2012, at 1:09 PM, <ibspud(at)roadrunner.com> <ibspud(at)roadrunner.com> wrote:



 	  Quote: 	
		   

 

 I am in Albany, OR, with a mag problem. Lightspeed works fine but The new Slick with only 20 hours on it is not sparking. Opened it up and everything looks fine, points open and close, rotor turns, and the brush looks ok but no spark. Even got brave and held it when I. Turned it over but no spark. Only good thing is there are several RV's here and they are a great help. Any ideas would be appreciated.

 Albert Gardner

 N991RV

 Usually Yuma but OR for a while.

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Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Mon May 28, 2012 9:43 pm Post subject: IO-540 Slick Mag

The guys here at Albany have been a big help. My mag was a new (20 hours) Slick 6351 impulse coupled, non-retard, left rotation, 20 degree lag. With the mag out of the plane there was no spark. We found another mag and started swapping parts eventually swapping out the coil, condenser, and the rotor. Nome of the parts made my mag work but all of my parts worked fine in another mag. Assuming we haven't confused ourselves that seems strange. I have located an A&P who will look at it tomorrow. Many thanks for those of you who have offered advice and/or offered to send a mag. So far the problem is still with me but tomorrow is another day. Weather her in IMC in the mornings anyway so maybe I will be good to go by the time the weather improves tomorrow. Again, thanks everyone.

Albert Gardner

N991RV

_________________
RV-9A N872RV
RV-10 N991RV

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Tue May 29, 2012 6:17 am Post subject: Re: IO-540 Slick Mag

What about the P lead suggestion?Find any shorts?

_________________
Bob Turner
RV-10 QB

Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Tue May 29, 2012 6:54 am Post subject: IO-540 Slick Mag

P-lead is ok, funny thing is that all the components work in another mag. Unfortunately, that mag won't work on my engine!

Heading over to get it checked out by an a&p this morning now that the world is back to work. Holiday weekends are not good if you need something done.

Albert Gardner

N991RV



---- Bob Turner <bobturner(at)alum.rpi.edu> wrote: 

 	  Quote: 	
		   

 

 What about the P lead suggestion?Find any shorts?

 

 --------

 Bob Turner

 RV-10 QB

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=374168#374168

_________________
RV-9A N872RV
RV-10 N991RV

Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Wed May 30, 2012 7:33 am Post subject: IO-540 Slick Mag

Made it back to Yuma last night with a repaired mag. I will post details of the problem as soon as I work it out with the supplier of the problem mag. The aviation guys at Albany, OR (S67) are some of the best and were quick to help out. Jay Sluiter-thanks for spending your holiday working with my mag and Larry Hagmeister, thanks for making it flight worthy.

Albert Gardner

N991RV

Yuma, AZ

_________________
RV-9A N872RV
RV-10 N991RV

Albert Gardner

Joined: 10 Jan 2006
Posts: 455
Location: Yuma, AZ

Posted: Wed May 30, 2012 9:52 am Post subject: IO-540 Slick Mag

Sorry I misidentified Albany, OR as S67 (Nampa) when it's really S12. Got to meet Rv-10r Ron Terharr but his plane was not on the field. Great paintjob however. Really nice RV-12 there also, looks like RVs are alive and well there.



Albert Gardner

N991RV

Yuma, AZ

_________________
RV-9A N872RV
RV-10 N991RV

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