Author: kbeene@... Time: Mon Aug 27, 2001 8:54 pm PDT Link
The points are grounded through a low resistance coil. Your ohm
meter will not read this low. This is normal. To check the timing
you need a system that checks the impedance. These devices used AC
or pulsating DC. Buy or borrow a mag timer.
Ken
--- In vansairforce@y..., "jfarrar1" <jfarrar1@h...> wrote:
> I have a problem with the Slick mag on my engine from Aerosport. I
was confirming the grounding circuit to the P lead and discovered
that
the P stud on the mag has continuity to ground all the time. I put
my
meter on it, after removing the wires, and rotated the engine thru
twice. It read grounded continuously. Has anyone heard of this? Is
it field repairable? I've got a call in to Bart but haven't heard
yet.
> Thanks, Jeff Farrar, RV8A N4ZJ, Top skin, canopy, fitting wings
to go.
Author: "jfarrar1" <jfarrar1@...> Time: Mon Aug 27, 2001 10:18 pm PDT Link
OK, thanks. Jeff
----- Original Message -----
From: Paul Besing (mailto:azpilot@e...)
To: vansairforce@yahoogroups.com (mailto:vansairforce@yahoogroups.com)
Sent: Monday, August 27, 2001 8:06 PM
Subject: Re: [VAF Mailing List] Mag problem and prop torque
Ahh, Jeff...I just went through this. Not a problem. You get a "soft" ground from the unit to the engine. While it reads a ground, it's not the real thing. They will always read ground all the time, except when the points actually open when the engineis running.
Don't sweat it. Drive on.
----- Original Message -----
From: jfarrar1 (mailto:jfarrar1@h...)
To: rv8list@yahoogroups.com (mailto:rv8list@yahoogroups.com) ; VAF List - RV's (mailto:vansairforce@yahoogroups.com)
Sent: Monday, August 27, 2001 6:45 PM
Subject: [VAF Mailing List] Mag problem and prop torque
I have a problem with the Slick mag on my engine from Aerosport. I was confirming the grounding circuit to the P lead and discovered that the P stud on the mag has continuity to groundall the time. I put my meter on it, after removing the wires, and rotated the engine thru twice. It read grounded continuously. Has anyone heard of this? Is it field repairable? I've got a call in to Bart but haven't heard yet.
Second question is where to get a 3/4" extention to torque a Hartzell constant speed prop? Sort of like a real long crow's foot. The bolt heads are only accessible from the sides. Aircraft Spruce doesnt have one. Or is there another way?
Thanks, Jeff Farrar, RV8A N4ZJ, Top skin, canopy, fitting wings to go.
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(end of quote)
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Author: philip condon <pcondon@...> Time: Tue Aug 28, 2001 9:19 am PDT Link
Try using a 1/2 inch to 3/8 square drive converter as a mini extention.
This has worked for me when I needed a mini extention. Also, different
manufactures of crows feet are of different proportions. The one from
MAC that I own seem to work best for close quarters work, while the
Craftsman are good all around crows feet. The Husky single crows foot I
purchased had the extra length I needed. Point being the different
manufactures versions of the crows feet might fit you need..
> jfarrar1 wrote:
>
> I have a problem with the Slick mag on my engine from Aerosport. I
> was confirming the grounding circuit to the P lead and discovered that
> the P stud on the mag has continuity to ground all the time. I put my
> meter on it, after removing the wires, and rotated the engine thru
> twice. It read grounded continuously. Has anyone heard of this? Is
> it field repairable? I've got a call in to Bart but haven't heard
> yet.
>
> Second question is where to get a 3/4" extention to torque a Hartzell
> constant speed prop? Sort of like a real long crow's foot. The bolt
> heads are only accessible from the sides. Aircraft Spruce doesnt have
> one. Or is there another way?
>
> Thanks, Jeff Farrar, RV8A N4ZJ, Top skin, canopy, fitting wings to
> go.
>
> Yahoo! Groups Sponsor
> ADVERTISEMENT
> [Lose 20 lbs by November 5th!]
> --------------------------------------------------------------
> Van's Air Force - World Wide Wing (http://www.vansaircraft.net)
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Author: philip condon <pcondon@...> Time: Tue Aug 28, 2001 9:26 am PDT Link
Paul's right, I had the same issue. BE SURE when the wire ( P-Lead)is
removed from the mag- the wire reads dead short to ground ---- Be
careful the mag is now "hot" when this wire is removed. To check for a
grounded P lead, check the lead wire out of circuit ( i.e. un bolted
from mag). This way you ensure you are supplying a ground source when
the mags are off. BTW, the above mentioned wire check should be done
with the mags off and the key out of the switch. You want to ensure with
the mags off and key in your pocket that you have a ground connection to
the mag......
Author: "jfarrar1" <jfarrar1@...> Time: Tue Aug 28, 2001 11:47 am PDT Link
Thanks Philip. Jeff
----- Original Message -----
From: "philip condon" <pcondon@m...>
To: <vansairforce@yahoogroups.com>
Sent: Tuesday, August 28, 2001 9:24 AM
Subject: Re: [VAF Mailing List] Mag problem and prop torque
> Paul's right, I had the same issue. BE SURE when the wire ( P-Lead)is
> removed from the mag- the wire reads dead short to ground ---- Be
> careful the mag is now "hot" when this wire is removed. To check for a
> grounded P lead, check the lead wire out of circuit ( i.e. un bolted
> from mag). This way you ensure you are supplying a ground source when
> the mags are off. BTW, the above mentioned wire check should be done
> with the mags off and the key out of the switch. You want to ensure with
> the mags off and key in your pocket that you have a ground connection to
> the mag......
> --------------------------------------------------------------
> Van's Air Force - World Wide Wing (http://www.vansaircraft.net)
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/