Today's Message Index:
----------------------
1. 09:09 AM - Re: Optical Switch? (jonlaury)
2. 05:15 PM - Re: MegaSquirt family of engine controllers (Ken)
3. 07:36 PM - Re: Re: Halogen bulbs with wig wag circuitry....failure mode (Robert L. Nuckolls, III)
4. 08:23 PM - Re: Re: Halogen bulbs with wig wag circuitry....failure mode (David Lloyd)
Message 1
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| Subject: | Re: Optical Switch? |
Optical switchers,
Again thanks for stepping up and your generous offers.
Bob, thanks for doing my legwork. I'm a little buried right now, but I'm going
to look at the part #'s you gave me and determine what looks best.
Cheers,
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=355201#355201
Message 2
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| Subject: | Re: MegaSquirt family of engine controllers |
David
I use an MS2 for backup fuel injection feeding a second set of
injectors. At the time, ignition was not an option but I would use it
also for backup ignition if building now. The system tests fine on every
flight. I would not be comfortable running it as a single primary
controller unless there were two of them set up for redundant either/or
operation with no common failure modes. Then again I also run Z-14 to
give it an independent power source so I do tend to be conservative.
There are lots of ways for such a one off system to fail due to assembly
and installation errors. The manual and circuit board quality is very
good though. It can be a fair bit of effort learning how to set it up
for your type of injectors and ignition system but I suspect lots of
help is still available providing you don't mention it's for an
aircraft. Wideband O2 (air fuel ratio) meters in the $200. range now
greatly simplify tuning these systems but make sure it is a true
wideband meter. If you are not planning two systems, I'd suggest you
also consider a pre-wired and assembled SDS EFI system. Tracy Cook also
offers some controllers which are partially redundant.
I also use the Megaview display for real time display of the MS sensors
and outputs. It has proven useful for quick and easy trouble shooting
and provides a manifold pressure display.
Backups have given me some unanticipated benefits. My primary system is
the subaru oem system and any concerns about fuel or ignition can be
confirmed or resolved just be switching systems.
Ken
On 15/10/2011 9:06 PM, David wrote:
>
> Have any of you knowledgeable guys evaluated the MS systems? They sound
> wonderful to me, as a programmer, but I have so little knowledge of
> electronics and circuitry I'd like to get an expert's take on them. it
> would be ideal if y'all could comment on one of the systems that control
> spark, squirt, and everything. :)
>
> Thanks,
> David Merchant
> (no, I'm really not trying to be facetious. I intend on using this in my
> Mustang II, with Ford engine. I'm still trying to learn how to apply
> Bob's book to my application.)
>
Message 3
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| Subject: | Re: Halogen bulbs with wig wag circuitry....failure |
mode
At 11:50 AM 10/15/2011, you wrote:
>
>I am going to run this next set of bulbs with the vertically
>oriented filaments and keep closer tabs on the time to
>failure.....If the same short life, then it is time to use your idea
>or move on the next generation of lighting system.
>Thanks, David
If you arrive at this decision point, take a look at
free-for-downloading switch mode power supply program
from Linear Technology. Here's a promo on the software:
http://www.youtube.com/watch?v=0xyjDPbT2Kg
Express PCB
http://expresspcb.com/
also offers free layout software, attractive
prices and fast turnaround for two-layer, pth boards.
Needless to say, your dynamic performance requirements
for this application are VERY loose. You'll want to
include some brute force filtering and a metallic
enclosure for forestall any EMC issues. But it would
be a pretty low-risk project for first-pass success.
Bob . . .
////
(o o)
===========o00o=(_)=o00o========
< Go ahead, make my day . . . >
< show me where I'm wrong. >
================================
Message 4
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| Subject: | Re: Halogen bulbs with wig wag circuitry....failure |
mode
Bob,
Again, thanks for the interesting leads to options that I had not known
about.....
Dave
____________________________________________________
----- Original Message -----
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Sunday, October 16, 2011 7:32 PM
Subject: Re: AeroElectric-List: Re: Halogen bulbs with wig wag
circuitry....failure mode
> <nuckolls.bob@aeroelectric.com>
>
> At 11:50 AM 10/15/2011, you wrote:
>><skywagon@charter.net>
>>
>>I am going to run this next set of bulbs with the vertically oriented
>>filaments and keep closer tabs on the time to failure.....If the same
>>short life, then it is time to use your idea or move on the next
>>generation of lighting system.
>>Thanks, David
>
> If you arrive at this decision point, take a look at
> free-for-downloading switch mode power supply program
> from Linear Technology. Here's a promo on the software:
>
> http://www.youtube.com/watch?v=0xyjDPbT2Kg
>
> Express PCB
>
> http://expresspcb.com/
>
> also offers free layout software, attractive
> prices and fast turnaround for two-layer, pth boards.
> Needless to say, your dynamic performance requirements
> for this application are VERY loose. You'll want to
> include some brute force filtering and a metallic
> enclosure for forestall any EMC issues. But it would
> be a pretty low-risk project for first-pass success.
>
>
> Bob . . .
> ////
> (o o)
> ===========o00o=(_)=o00o========
> < Go ahead, make my day . . . >
> < show me where I'm wrong. >
> ================================
>
>
>
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