Backup Vacuum System
 Losing vacuum driven
gyros can be catastrophic in IMC and the alternatives until now
have been limited and expensive. We have designed a
simple, reliable backup system that is affordable for all GA
pilots. If truth be told, many have installed this type of system
in their aircraft over the years as a safety measure and for
want of an affordable alternative. We have simply pulled the
parts together and provided simple, straightforward installation
instructions.
When we tasked our engineers to design this, we asked them to aim for
a retail price under $150 so that everyone who flies IFR can
afford to install a backup vacuum system.
The backup system connects to the engine's intake and, in the event of
vacuum pump failure, the pilot simply pulls on the control cable
that operates the 3-way valve and vacuum is restored to the gyro
instruments to continue a safe flight.
Unlike the design of the popular TSO'd version, our system consists of
a 3-way positive detent valve out of solid aluminum. Ball valves,
in our opinion, are great for household plumbing but simply do
not offer the failsafe reliability needed for aircraft applications.
In addition, by using a 3-way valve, the failed vacuum pump is
completely eliminated from the system, providing two major benefits.
First of all, the full manifold vaccum is directed to the
vacuum regulator instead of dissipating partially through the
failed vacuum pump. Secondly, and most importantly,when the vacuum
pump fails and a simple 2-way valve is activated, air is pulled
through the vacuum pump in a reverse flow, bypassing all filtration
and allowing the engine to aspirate any contaminants and vane
components from the pump and the engine compartment. If the pump
had a major failure or seized, these contaminants could be significant.
So we opted for a 3-way valve that simply closes off the vacuum
pump from the system.
Of
course, by using the vacuum of the intake, a small decrease
in engine power can be expected and the air/fuel ratio will lean
out on the side from which the vacuum is taken.
Also, please remember that this is a BACKUP device and should
only be used to allow the flight to reach the nearest safe
landing facility -- safety-conscious pilots will only use the backup
system to extricate themselves from what could otherwise be
a lethal one and will land as soon
as a safe site can be reached
Before you make up your mind, compare our product to
vacuum
backup systems from other suppliers.
Backup Vacuum System $135.00
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