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New
Product: The JSRE Formula 1/Drag Racer
Flywheel
By Greg Terzian
 We’ve
all heard people talking about them, but should we invest in a lightweight
flywheel? Yes, they look really cool, but there’s more to it than looks – a
lot more.
The standard steel V6 Mercury flywheel weighs in at over nine pounds. That’s
a lot of weight on the top of your crankshaft, so the racers and high
performance crowd usually opt for the Mercury aluminum flywheels that are
standard equipment on high performance engines. These units weigh in at 6.6
pounds, and can withstand the high-RPM abuse of a high performance engine.
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Left:
4.9 pounds,
and race ready.
Right:
Detail of
cutting and polishing work. |
What is the
benefit of lightweight flywheel? Less weight on the top of your crankshaft
means less stress on the bearings and crankshaft itself. Additionally, a
lighter flywheel will allow the engine to gain RPM quicker. Although peak
horsepower will essentially remain the same, the engine equipped with the
lighter flywheel will achieve its maximum RPM quicker. Better acceleration
and increased engine life? I’m sold to that idea.
While many people
have realized that even the Mercury aluminum flywheel can stand some
machining to reduce even more weight, it’s a tricky process handled only by
a true professional. Special machinery is required, and the flywheel must
be balanced to 12,000+ RPM. A precisely balanced flywheel is crucial for
engine reliability, performance, and operator safety. In addition to that,
it must remain strong and rigid. Just any design won’t do, as a faulty
design could cause the flywheel to break apart, possibly causing serious
injury.
Jay Smith Racing
Engines introduced us to their standard lightweight modified flywheel
several years ago, and it’s been a favorite among members of our high
performance boating community. It weighed in at about 5.5 pounds. I’ve seen
this unit up close, and the machine work was impeccable – a product of a
true craftsman. We also don’t mind the high performance look of a custom
cut and polished flywheel!
JSRE raises the bar again with
their new Drag Race and Formula 1 flywheel. This unit incorporates a new
design to the machine work, which allowed an unprecedented final weight of
4.9 pounds. It’s electronically balanced and super strong. The additional
openings in the top will also help keep the stator windings cooler, possibly
increasing durability. This particular unit is to be used by Formula 1
driver, Terry Rinker, however, anyone can purchase this flywheel at JSRE for
$500 plus your core and shipping. The Lake Racer flywheel is still
available at $400 plus your core and shipping.
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Contact Information |
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Jay Smith
Racing Engines
www.jaysmithracing.com
12807
Erin Lane, Dayton, Texas 77535
(281) 576-5088 |
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