REFLECTOR: Velocity for sale

[Ramin Yavrom]

Hi Guys,

Please let your friends know that I am selling my
Velocity (standard, fixed gear), 470 smoh plus a ton
of pannel stuff. 

See my ad with picture on Barnstormers.com

For non-tire Kicker, serious buyers only. 

call me Ray, 209-483-1716



____________________________________________

--- Dave Philipsen <velocity at davebiz.com> wrote:

> I _believe_ that you can install a terminal block
> inside the engine 
> compartment _if_ you use the correct thermocouple
> extension wire from 
> the terminal block on into the wiring harness. 
> Theoretically, whenever 
> two dissimilar metals are connected a small voltage
> is generated that 
> could cause an error.  However, connecting two wires
> of the _same_ type 
> with a third, dissimilar, metal (such as a terminal
> block) would negate 
> that effect as long as the temperature of the
> terminal block is the same 
> from one side to the other.
> 
> At some point the wire composition has to change
> from that of 
> thermocouple wire to some other kind of wire either
> at the harness 
> connection or a connector on the back of your EFIS. 
> The EFIS probably 
> compensates for that by measuring the temperature of
> the case with a 
> thermistor and modifying the equation appropriately.
>  Your connection 
> from thermocouple extension wire to the dissimilar
> harness wire is 
> probably ok as long as the temperature of that
> junction is close to the 
> temperature of the EFIS unit itself.  You definitely
> wouldn't want that 
> junction to be in the engine compartment since the
> EFIS doesn't know the 
> temperature of you engine compartment and can't
> correctly compensate for it.
> 
> This being said, some purists will tell you that you
> _must_ use only 
> thermocouple or thermocouple extension wire from the
> thermocouple all 
> the way to the EFIS unit.  You can always wire it up
> with the terminal 
> block and then test the probe(s) with a known
> temperature heat source.  
> Boiling water is 212 degrees F at standard sea level
> pressure.
> 
> Andrew Ellzey wrote:
> > Question for the collective. What is everyone
> doing when ordering CHT and EGT probes as for cable
> lengths? I am installing BM EFIS one system and a
> Lycoming IO-540. Can a terminal board be added on
> the inside of the aircraft firewall to make a
> disconnect point for future probe changes and to
> make the harnesses reach? I have the BM built A3
> sensor harness and the wiring from BM is unshielded
> 22 gauge wiring for the CHT and EGT inputs. This
> seems to be a mistake on their part. Westach sells
> extension leads up to 12 feet that is supposed to
> not affect accuracy. Is the the correct way to go
> with a terminal block inside the aircraft firewall?
> Has anyone used standard 22 gauge wiring and not had
> problems with probe accuracy? BM sensor inputs are
> completely programmable.
> >  
> > Andy Ellzey
> > XLRG
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> 
> -- 
> Dave Philipsen
> Velocity STD-FG
> N83DP
> 
> 
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