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Tach Attack



 
 
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  #1  
Old August 9th 09, 05:44 PM posted to rec.aviation.homebuilt
canuck_bob
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Posts: 21
Default Tach Attack

Gee Ron,

Your on a slippery slope. Digital displays and already planning your
next electrical upgrade! Could be evidence of that dreaded
psychological disorder known as Airventure Syndrome. We'll keep an
eye out for the major symptoms, obsessive urges to install IFR glass
panels, researching the installation of autopilot systems and weather
radar, and the most serious sympton requiring medication a small
little black box that costs more than your last house.

There is only one cure. Quick, rush to the airport and throw that
generator and starter into the bush, recycle the battery, and strip
all that tangled wire. Think back to the days when your electrical
system was 2 wires to a switch. There is hope still for a complete
recovery! ;-)

Bob

  #2  
Old August 9th 09, 10:59 PM posted to rec.aviation.homebuilt
Scott[_7_]
external usenet poster
 
Posts: 256
Default Tach Attack

canuck_bob wrote:
Think back to the days when your electrical
system was 2 wires to a switch. ;-)

Bob


And some of us STILL do!

Scott
Corben Junior Ace
We don't need no steeenkin' electrical system
  #3  
Old August 10th 09, 08:53 AM posted to rec.aviation.homebuilt
Philippe[_2_]
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Posts: 37
Default Tach Attack

Scott a écrit:

Think back to the days when your electrical
system was 2 wires to a switch. ;-)


but now, electrical system may be more reliable. I read my old
continental engine health on an EIS 4000.
For my tach, I use two magnet on the flywheel, a reed contact and two
wires.

You know small continental d'nt have flywheel but a french guy make a
conversion for A65 with kubota permanent magnet alternator and
automotive starter. This kit may fit O200 too.
http://mdlaurent.free.fr/

I also use the magnets for CDI electronic ignition. no more magnetos,
no more cable for tach, no more copper tube for oil pressure...

By
--
« Si tous les poètes voulaient se donner la main, ils toucheraient enfin
des doigts d'auteur! »
Philippe Vessaire Ò¿Ó¬

  #4  
Old August 10th 09, 10:44 PM posted to rec.aviation.homebuilt
Brian Whatcott
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Posts: 915
Default Tach Attack

Philippe wrote:
....
I also use the magnets for CDI electronic ignition. no more magnetos,
no more cable for tach, no more copper tube for oil pressure...

By


Not sure if this is what you mean, but a few high energy magnets
spinning on a plate do a great job producing pulses in a few coils
spaced close to the spinning magnets.

Seems like you could easily arrange two sets of coils to provide a
double source for a CD ignition, as well as timing it....
Or perhaps more compact, a source (if rectified and smoothed)
for one of those electronic ignition modules that fit inside the car
distributor, these days....

Either way that really amounts to a magneto I suppose - but so few
components, and double redundant so no battery would be involved.....

Brian W
  #5  
Old August 11th 09, 12:28 AM posted to rec.aviation.homebuilt
Peter Dohm
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Posts: 1,754
Default Tach Attack

"brian whatcott" wrote in message
...
Philippe wrote:
...
I also use the magnets for CDI electronic ignition. no more magnetos,
no more cable for tach, no more copper tube for oil pressure... By


Not sure if this is what you mean, but a few high energy magnets spinning
on a plate do a great job producing pulses in a few coils spaced close to
the spinning magnets.

Seems like you could easily arrange two sets of coils to provide a double
source for a CD ignition, as well as timing it....
Or perhaps more compact, a source (if rectified and smoothed)
for one of those electronic ignition modules that fit inside the car
distributor, these days....

Either way that really amounts to a magneto I suppose - but so few
components, and double redundant so no battery would be involved.....

Brian W


I admit that I don't recall who manufactures and sells them; but I seem to
recall that Steve Wittman used a "self sufficient distributor" fitting that
description, as part of his V8 conversion for the Tailwind, at least 25
years ago.

Peter



  #6  
Old August 11th 09, 01:10 AM posted to rec.aviation.homebuilt
Scott[_7_]
external usenet poster
 
Posts: 256
Default Tach Attack

Peter Dohm wrote:


I admit that I don't recall who manufactures and sells them; but I seem to
recall that Steve Wittman used a "self sufficient distributor" fitting that
description, as part of his V8 conversion for the Tailwind, at least 25
years ago.

Peter



Would that really be a Vertex magneto that fits into the distributor
hole? They use Vertex mags on VW engines sometimes...

Scott
  #7  
Old August 11th 09, 02:16 AM posted to rec.aviation.homebuilt
Peter Dohm
external usenet poster
 
Posts: 1,754
Default Tach Attack

"Scott" wrote in message
.. .
Peter Dohm wrote:


I admit that I don't recall who manufactures and sells them; but I seem
to recall that Steve Wittman used a "self sufficient distributor" fitting
that description, as part of his V8 conversion for the Tailwind, at least
25 years ago.

Peter



Would that really be a Vertex magneto that fits into the distributor hole?
They use Vertex mags on VW engines sometimes...

Scott


You are probably correct, although I no longer recall the name and do not
recall where my copy of the V8 conversion plans might be stored.

That was just one of several projects that never came to fruition. And
today there are additional choices in the same range of power, weight, and
displacement--that would not require the resurection of a 45 year old
engine.

Peter



  #8  
Old August 12th 09, 02:00 AM posted to rec.aviation.homebuilt
Morgans[_7_]
external usenet poster
 
Posts: 37
Default Tach Attack


"Scott" wrote


Would that really be a Vertex magneto that fits into the distributor hole?
They use Vertex mags on VW engines sometimes...


I think it was this beast that I read some very unflattering things about,
concerning reliability, about a month ago. It made me wonder if I would
want to depend on one of these while above the NC mountains.

Anyone else remember anything like that?
--
Jim in NC

  #9  
Old August 11th 09, 03:42 AM posted to rec.aviation.homebuilt
Brian Whatcott
external usenet poster
 
Posts: 915
Default Tach Attack

Peter Dohm wrote:
"brian whatcott" wrote in message
...
Philippe wrote:
...
I also use the magnets for CDI electronic ignition. no more magnetos,
no more cable for tach, no more copper tube for oil pressure... By

Not sure if this is what you mean, but a few high energy magnets spinning
on a plate do a great job producing pulses in a few coils spaced close to
the spinning magnets.

Seems like you could easily arrange two sets of coils to provide a double
source for a CD ignition, as well as timing it....
Or perhaps more compact, a source (if rectified and smoothed)
for one of those electronic ignition modules that fit inside the car
distributor, these days....

Either way that really amounts to a magneto I suppose - but so few
components, and double redundant so no battery would be involved.....

Brian W


I admit that I don't recall who manufactures and sells them; but I seem to
recall that Steve Wittman used a "self sufficient distributor" fitting that
description, as part of his V8 conversion for the Tailwind, at least 25
years ago.

Peter



Something that fits in the distributor hole and looks like a
distributor, with no battery lead however, is the VW type magneto.
Kinda expensive, and sticks up on a VW cowl, but does the job.

Kinda like the Wittman approach??

Brian W
  #10  
Old August 11th 09, 02:55 PM posted to rec.aviation.homebuilt
Peter Dohm
external usenet poster
 
Posts: 1,754
Default Tach Attack


"brian whatcott" wrote in message
...
Peter Dohm wrote:
"brian whatcott" wrote in message
...
Philippe wrote:
...
I also use the magnets for CDI electronic ignition. no more magnetos,
no more cable for tach, no more copper tube for oil pressure... By
Not sure if this is what you mean, but a few high energy magnets
spinning on a plate do a great job producing pulses in a few coils
spaced close to the spinning magnets.

Seems like you could easily arrange two sets of coils to provide a
double source for a CD ignition, as well as timing it....
Or perhaps more compact, a source (if rectified and smoothed)
for one of those electronic ignition modules that fit inside the car
distributor, these days....

Either way that really amounts to a magneto I suppose - but so few
components, and double redundant so no battery would be involved.....

Brian W


I admit that I don't recall who manufactures and sells them; but I seem
to recall that Steve Wittman used a "self sufficient distributor" fitting
that description, as part of his V8 conversion for the Tailwind, at least
25 years ago.

Peter



Something that fits in the distributor hole and looks like a distributor,
with no battery lead however, is the VW type magneto.
Kinda expensive, and sticks up on a VW cowl, but does the job.

Kinda like the Wittman approach??

Brian W


I believe so.

Peter


 




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