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dhall(at)donka.net
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 Posted: Fri Aug 08, 2008 9:08 am Post subject: fwf wiring questions... |
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1) Alternator. Is it normal\ok to run the alt-field line along the
same route as the heavy gauge power output line from the alternator,
along the underside of the engine around the top of the sump? (my
case: rv7/io360)
2) What is typically used for small gauge connections under the
cowl? For instances, leads to rpm sensor, fuel flow, etc solder,
butt-splice, small fastons?
Also fwf, my direct crank sensor has a 2-pair shielded line
that needs to be joined. Is 9-pin D-Sub ok fwf? or should I just
KISS and splice...
Don
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nuckolls.bob(at)cox.net
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| Posted: Fri Aug 08, 2008 2:11 pm Post subject: fwf wiring questions... |
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At 01:06 PM 8/8/2008 -0400, you wrote:
| Quote: |
1) Alternator. Is it normal\ok to run the alt-field line along the
same route as the heavy gauge power output line from the alternator,
along the underside of the engine around the top of the sump? (my
case: rv7/io360)
|
Sure
| Quote: | 2) What is typically used for small gauge connections under the
cowl? For instances, leads to rpm sensor, fuel flow, etc solder,
butt-splice, small fastons?
|
The no-arguments best joining of wires happens with
permanent splices of some variety . . . .crimped or
soldered.
The automotive experience with under-the-hood connectors
has been a mixed bag . . . but sealed connectors over
the past 15 years or so seem to hang in there quite well.
Problem is that these critters are not easy to get in
small end-user quantities . . . nor are the installation
tools cheap.
There's a host of options that range from permanent solder
lap joints (how often do you expect to open these joints?)
as shown at:
http://aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html
| Quote: | Also fwf, my direct crank sensor has a 2-pair shielded line
that needs to be joined. Is 9-pin D-Sub ok fwf? or should I just
KISS and splice...
|
. . . I'd consider lap-solder-and-shrink for this important
signal path. I'm aware of no reasonably priced, easily acquired
crimp connector/tools combination that would be very attractive.
Hirose makes a line of solderable connectors which are very
small and environmentally pretty tight. See:
http://www.hirose.co.jp/cataloge_hp/e11000216.pdf
You can get these from Digikey.com
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=HR1598-ND
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=HR1583-ND
A mated pair will set you back about $25.
A d-sub with metal backshells would probably work well
for you also.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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