I would like to install a VMS 1000 in my Lancair 320. Those of you who have
the same instruments system in your plane,can you share your experience
with me and say  what you think about it?

Alain,

 

I would not put a VM 1000 system in my airplane today unless VM insured me that it would remember the many-hour history of engine operations and parameters and allow me to download these to a computer.  Check into JPI.  Also check the daylight/dusk/nighttime readablility of the display screen.

 

<<< also envision to put the VMS fuel level system in place of my actual
Westach capacitance fuel level system which give me erroneous
informations.>>>

 

The VM fuel system is the most accurate I have ever seen or used.  Properly calibrated, it is extremely accurate in reporting fuel levels and flows. 

 

<<<Has anyone done such a modification and what are the problems
you encountered?>>>

 

Unless you have compatible Physical Dimensions for the fuel measuring rods, I think it would be a daunting task to open each fuel tank and install the required rods and fittings.  I am sure VM could supply you with specifications.

 

Perhaps just a good fuel flow sensor and reporting system, whether JPI, VM or someone else's would satisfy the need to know "remaining fuel."

 

Even though I have an accurate VM system (installed as I was building the wings in the early 90's), I still fly by estimating "Time remaining before I have to tap into my 1 hour reserve."  Usually, I have to tap into my bladder before the reserve begins draining - This is my backup check.