[Land-speed] Inertia Switch Specs...

[John Staiger]

mayf
 
Interesting questions... I use crossed Mercury switches mounted to the
firewall to fire the chute and kill all electrical systems (pump, ECU,
injectors, etc) in both the 1150 streamliner bike and the Berkeley by tripping
out the master solenoid... adding an inertia switch seems like a good idea...
do automotive inertial switches also trip on an upset? i.e. upside down? or
just inertia (impact)?   also, has anyone played with micro gyros?  I always
wanted to use one of these to trip out the chute if speed > 100 and yawl
greater than 3 degrees... OK a bit over the edge, but those dam electrons are
so much faster than my reflexes...
 
JLS

--- On Thu, 12/4/08, drmayf <drmayf at mayfco.com> wrote:

From: drmayf <drmayf at mayfco.com>
Subject: [Land-speed] Inertia Switch Specs...
To: "LSR" <land-speed at autox.team.net>
Date: Thursday, December 4, 2008, 11:40 AM

One of th eapproved rule changes, required for the 2010 season is the
implementation of an inertia switch to shut down an electric fuel pump in an
upset condition.  I think this is a greeat idea. BUt seems that there may be
some open issues with that, at least it seems that way to me. One is what is
the
requirement for impact to trigger the switch? It needs to be higher that the
bump of a push car yet low enough to be effective. Can a switch be placed in
a
control line of a relay or does it need to be in the primary line? I can
purchase one from Pegasus for about 60 bucks that is for 10 - 12 g's and it
is used in the circuit course racing. But is that too much? Too little?  And
that begs the question of where and to what the switch should be mounted.
Chassis / framework? Inside the cockpit area? Does it for some reason need to
be
accessible to the safety crew?  I suspect more questions could be asked but
this
is enough for me now, lol. Have any of you chatted with club officials as to
what they might actually be looking for during tech inspection?

Input is appreciated and no I wont bend over, lol...

mayf
Land-speed mailing list

You are subscribed as lsrvette at yahoo.com

http://autox.team.net/mailman/listinfo/land-speed