Today's Message Index:
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1. 07:18 AM - Re: lightspeed ignition troubleshooting (Robert Brunkenhoefer)
2. 07:34 AM - Re: Re: lightspeed ignition troubleshooting (Bob Collins)
3. 07:39 AM - Re: lightspeed ignition troubleshooting (brunk)
4. 07:40 AM - Re: Re: lightspeed ignition troubleshooting (Dave Saylor)
5. 08:42 AM - Re: Re: lightspeed ignition troubleshooting (scott bilinski)
6. 08:43 AM - Re: lightspeed ignition troubleshooting (brunk)
7. 11:50 AM - Re: lightspeed ignition troubleshooting (brunk)
8. 12:11 PM - Re: Re: lightspeed ignition troubleshooting (Bob Collins)
9. 04:04 PM - Re: Re: lightspeed ignition troubleshooting (Scott Bilinski)
10. 04:16 PM - Re: LightSpeed ignition troubleshooting (Vincent Himsl)
Message 1
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| Subject: | Re: lightspeed ignition troubleshooting |
On Jun 24, 2013, at 9:16 AM, Robert Brunkenhoefer <robert@brunklaw.com> wrote:
> I have been trying to troubleshoot a drop of 250 rpm on run up on my light speed
side. I usually get 0 drop. I also show a 250 degree rise above the other
cylinders in the 3 and 4 egt. Cht is normal for all. I have done all the troubleshooting
in the manual supplied by Klaus. We have spoken a lot about this problem.
I would like to fly my plane somewhere nearby to someone who is familiar
withs these units so I can get back to the perfect way it was for 5000 plus
hours. thanks. I am based at KCRP, corpus christi , texas. Robert Brunkenhoefer
N661G 600 hours plus
Message 2
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| Subject: | Re: lightspeed ignition troubleshooting |
So when you take the coil-to-plug leads off and you pull the prop
through, you're getting the spark jumping across the leads on the coil,
right? And at the right time?
On 6/24/2013 9:17 AM, Robert Brunkenhoefer wrote:
>
>
> On Jun 24, 2013, at 9:16 AM, Robert Brunkenhoefer <robert@brunklaw.com> wrote:
>
>> I have been trying to troubleshoot a drop of 250 rpm on run up on my light speed
side. I usually get 0 drop. I also show a 250 degree rise above the other
cylinders in the 3 and 4 egt. Cht is normal for all. I have done all the troubleshooting
in the manual supplied by Klaus. We have spoken a lot about this problem.
I would like to fly my plane somewhere nearby to someone who is familiar
withs these units so I can get back to the perfect way it was for 5000 plus
hours. thanks. I am based at KCRP, corpus christi , texas. Robert Brunkenhoefer
N661G 600 hours plus
>
>
Message 3
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| Subject: | Re: lightspeed ignition troubleshooting |
Yes, that is correct. spark plug leads were replaced and coil to 3 and 4 was replaced,
as well as all spark plugs. connections were checked on both ends of the
system.
--------
Robert E. Brunkenhoefer
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=403302#403302
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| Subject: | Re: lightspeed ignition troubleshooting |
I've found LS to be pretty sensitive to dirty plugs. It's early on the
troubleshooting checklist but even of they looked ok you might try a new
set. I just had that work for me under similar circumstances. In my case
the plugs were only 3 hours old and just looked a little used but not bad
at all. New plugs did the trick.
On Monday, June 24, 2013, Robert Brunkenhoefer wrote:
> >
>
>
> On Jun 24, 2013, at 9:16 AM, Robert Brunkenhoefer <robert@brunklaw.com<javascript:;>>
> wrote:
>
> > I have been trying to troubleshoot a drop of 250 rpm on run up on my
> light speed side. I usually get 0 drop. I also show a 250 degree rise above
> the other cylinders in the 3 and 4 egt. Cht is normal for all. I have done
> all the troubleshooting in the manual supplied by Klaus. We have spoken a
> lot about this problem. I would like to fly my plane somewhere nearby to
> someone who is familiar withs these units so I can get back to the perfect
> way it was for 5000 plus hours. thanks. I am based at KCRP, corpus christi
> , texas. Robert Brunkenhoefer N661G 600 hours plus
>
>
--
Dave Saylor
831-750-0284 CL
Message 5
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| Subject: | Re: lightspeed ignition troubleshooting |
Do you have the old RG-58 coax cable to the coils? This caused me trouble,
replaced it with RG-400 cable problem solved.=0A-=0AScott=0A=0A=0A_______
_________________________=0A From: brunk <robertbrunk@mac.com>=0ATo: rv-lis
t@matronics.com =0ASent: Monday, June 24, 2013 7:39 AM=0ASubject: RV-List:
Re: lightspeed ignition troubleshooting=0A =0A=0A--> RV-List message posted
by: "brunk" <robertbrunk@mac.com>=0A=0AYes, that is correct. spark plug le
ads were replaced and coil to 3 and 4 was replaced, as well as all spark pl
ugs. connections were checked on both ends of the system.=0A=0A--------=0AR
obert E. Brunkenhoefer=0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp
://forums.matronics.com/viewtopic.php?p=403302#403302=0A=0A=0A=0A=0A=0A
=============
Message 6
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| Subject: | Re: lightspeed ignition troubleshooting |
Dave, I replaced the plugs with new ones and experienced no change from that.
--------
Robert E. Brunkenhoefer
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=403315#403315
Message 7
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| Subject: | Re: lightspeed ignition troubleshooting |
This is the original coax cable . I do not know the number of it. Would it cause
the symptoms I described? Was that your problem it corrected?
--------
Robert E. Brunkenhoefer
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=403333#403333
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| Subject: | Re: lightspeed ignition troubleshooting |
If you're getting a spark jumping across the leads, I doubt it's the
coax. You've changed the spark plugs (and the copper washers, right?)
and if you're EGT is going up , those plugs aren't firing. The next
thing I would eliminate as a possible cause are the wires from the
coil(s) to the individual plugs. Assuming you've doublechecked to be
sure these didn't somehow get routed to the wrong plugs (ask me how
know), try swapping the wires, disconnecting them from the coils and
plugs and connecting them to another (appropriate) coil and another
(appropriate) plug and see if that same plug doesn't fire or if another
plug becomes the one that doesn't fire.
Assuming nothing changes, I think you've eliminated the Lightspeed as
the cause and we can start just diagnosing the only three things it can
be from there forward : spark, fuel, or air, and we might be able to
eliminate spark.
On 6/24/2013 1:49 PM, brunk wrote:
>
> This is the original coax cable . I do not know the number of it. Would it cause
the symptoms I described? Was that your problem it corrected?
>
> --------. dd
> Robert E. Brunkenhoefer
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=403333#403333
>
>
Message 9
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| Subject: | Re: lightspeed ignition troubleshooting |
The RG 58 is black.
I had a strange intermittent miss when turning off one ignition. One thing to remember
is RG 58 was designed for WWII aircraft. RG 400 is MODERN! RG 58 is NOT
designed to handle under cowl temps. Especially the center conductor insulation.
Sent from my iPhone
On Jun 24, 2013, at 11:49 AM, "brunk" <robertbrunk@mac.com> wrote:
>
> This is the original coax cable . I do not know the number of it. Would it cause
the symptoms I described? Was that your problem it corrected?
>
> --------
> Robert E. Brunkenhoefer
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=403333#403333
>
>
>
>
>
>
>
>
>
>
Message 10
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| Subject: | RE: LightSpeed ignition troubleshooting |
Hi,
250 RPM drop compared to what read by what at what RPM setting? Run up
implies 17 to 18 hundred rpm. Are you using the digital or analog rpm signal
from the LightSpeed? CHT temps should drop, at least they do for me, when a
cylinder is not firing. But yours are 'normal'. Do you hear/feel the RPM
drop or is your only indication an instrument RPM reading drop? Your
tachometer could be missing pulses (if digital) from the LIghtSpeed, and
your tachometer is a...?
Thanks,
VinceH
RV8 Flying
On Jun 24, 2013, at 9:16 AM, Robert Brunkenhoefer <robert@brunklaw.com>
wrote:
> I have been trying to troubleshoot a drop of 250 rpm on run up on my
> light speed side. I usually get 0 drop. I also show a 250 degree rise
> above the other cylinders in the 3 and 4 egt. Cht is normal for all. I
> have done all the troubleshooting in the manual supplied by Klaus. We
> have spoken a lot about this problem. I would like to fly my plane
> somewhere nearby to someone who is familiar withs these units so I can
> get back to the perfect way it was for 5000 plus hours. thanks. I am
> based at KCRP, corpus christi , texas. Robert Brunkenhoefer N661G 600
> hours plus
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