Cavi Mike wrote on 09/20/12 at 21:54:09:The vac petcock is a safety device in the event the carb float sticks or the float needle valve sticks open. It has nothing to do with the bike tipping.
This is true.
Now, we are
still waiting for the first one of these carb float sticks or float needle valve sticks open to happen once a Raptor is in place (the Raptor is holding the fuel level STEADY right up at the shut off point like a good little petcock should do so the floats and valves are working correctly).
Point I am making here is
that without the vac petcock starving the bowl until the float goes down to a hard stop position (and sticks there) there doesn't seem to be any float sticking or float needle valve sticking open going on with the Raptors. This may seem a little harsh, but since we are all looking we can look for these little scenarios too. I will continue to point out that all the gas in sump episodes so far have happened (started) with a stock vac petcock, and nary a one has started with a Raptor.
And it has been what, two years now?
We shall start counting sticking floats and sticking needle valves according to what petcock is mounted when it first starts too.
Understanding Charon's point that the population of vac petcocks is supposed to be greater in the wild than the population of Raptor petcocks, I will also point out that
here on the list that ratio is now officially going the other way, with more (27) Raptors now and only (21) stock vac petcocks.
the shoe is on the other foot now ....