CLEAN SNOWMOBILEUNIVERSITY OF MAINE 2011-2012

2007 Yamaha Phazer

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Due to a damaged

piston occurring in

the 2011 competition,

the first milestone for

this year’s team was a complete

rebuild of the 499cc twin cylinder 4

stroke Yamaha engine (right).

A custom exhaust (right) complete with a pre-cat and catalytic converter

from Random Technology Inc., along with a Walker Quiet Flow muffler, was added to reduce sound

and emissions.

Team members: Lucas Farrar,

Andrew Gwarjanski,

Kalee Gurschick,

Michael Galli and David Raymond

MegaLog viewer is a useful tool capable of

plotting engine parameters such as RPM, manifold abs.

pressure, pulse width, duty cycle and spark advance over time while the engine is

running. These curves (above) help in trouble

shooting and aid in achieving optimum

engine performance.

CLEAN SNOWMOBILEUNIVERSITY OF MAINE 2011-2012

Fuel Injector Flow Bench

A crucial control input to any

engine is the fuel injector pulse

width. In order to learn more about the fuel injection

system of the Phazer and tune

the engine properly, a fuel

injector flow bench was fabricated

(above). The schematic to the right displays the additions to the

existing dynamometer

cart.

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The 2011 Team fabricated custom cowlings that were

lined with heat resistant and sound deadening material.

This year, any weak or damaged

spots were repaired and the pieces were given a fresh coat of

paint (above).Special thanks to Mick Peterson, Diane Maguire, Karen Fogarty, Chuck Maguire and Jakob Low.