Jeff, that reverse feature should allow you to now do the infamous" reverse
launch" that a few always seem to do at every Pro Solo.
If one stages too deep, having reverse can save you..as long as one
remembers to be set up to launch forward when the tree comes down.
This is also why at both Pros as well as regular Solos, you should not crowd
up too closely behind the one who is staged, just in case they one of those
advanced cars with reverse. :->
Chuck
From: Jeff Blumenthal <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: [F500] Rotax 493 installation
Date: Sat, 26 Aug 2006 10:51:46 -0400
Sorry to interrupt the bike motor thread...
I just finished installing a 493 in my KBS Mk8 and thought I'd share some
info to save others the frustration I experienced.
After completing the installation I tried to fire the engine. It cranked
fine but did not even hint that it wanted to fire. I rechecked all my
fittings, connections, etc. Spark was good and there was fuel in the carb
bowls. I pulled the plugs and they were dry!? I pulled the fuel line off
the carbs and cranked the engine to check fuel flow. There was plenty of
fuel getting to the carbs. So everything checked fine but it wouldn't run.
The 493 comes standard with a plastic "balance pipe" that connects the two
carb manifolds. There is a hole (1/2") in each rubber manifold that the
balance pipe connects to. When the 493 was first legalized, there was
discussion about whether the balance pipe was legal...I can't recall what
the current ruling is, but I don't use it because it does not fit my
installation (because of the way I routed the cooling lines). I didn't
have anything to plug the holes at the time and didn't think it would have
any effect on starting the motor. WRONG!!! If those holes aren't plugged,
or connected with the balance pipe, there is not enough suction to pull
fuel from the carbs into the motor.
I plugged the holes and the motor fired instantly.
BTW, this is the first 493 I installed that has Rotax reverse. Very
cool!!! Press the reverse button at idle and the motor almost comes to a
stop, and then very quickly begins running the the reverse direction. The
entire process only takes about one second to change direction.
-Jeff B.
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