Forespro delimber received its
attention at a recent demo.
By Jim Stirling
If experience is the best teacher
then the Forespro is a winner of a delimber. The machine was gathering believers
when Quadco Equipment brought its telescopic boom delimber in for a recent
demonstration at a Warmac Ventures logging show. It was the first time west of
the Rockies for the Forespro, but a quarter century of tradition is incorporated
into its sturdy design. It was born in the mid-1970s amid the mixed forests and
rolling terrain of rural Quebec. Log harvesting contractor Roger Sigouin
designed and built the first stroke delimber to work from the bottom of the stem
to the top.
He called it the Roger delimber
and it quickly gained the attention of local contractors and sawmills that
appreciated the higher quality wood the new-style delimber produced. Sigouin was
encouraged to begin commercial production of the machine and did so until the
industry hit tough times in the early 1980s. But interest in the concepts behind
the Roger delimbers never disappeared.
The machine's features have been
imitated through the years and the Roger retained a loyal group of devotees who
found it to be the solution to their delimbing problems. The market wanted more
and eventually won the day - the Sigouin family resumed its delimber
manufacturing business. Contractors had always visited Roger Sigouin's machine
shop to discuss the pros and cons of forest machines. Sigouin listened to what
was said and, from the feedback and his personal experience, found ways to make
a good delimbing machine even better.
Now that Quadco has added the
Forespro to its product line, logging contractors across the country can see how
the latest manifestation of the Roger heritage suits their needs. One thing's
for sure: the bond between manufacturer and end user hasn't diminished.
"The most important thing is the customer and listening to him," says
Richard Sigouin, Roger's son. There are two other important points, adds the
younger Sigouin: don't make machines that are more complicated than they have to
be. Delimbing - especially in small and medium sized trees - is a repetitive
action tough on moving parts and machine function.
Experience has shown where the
pressure points are and where weaknesses occur. And that's point number two:
provide a heavy-duty, bush-wise machine that can take the punishment and
maintain production under the less than ideal conditions that prevail in most
logging shows. Reducing downtime is paramount. "The machine is
We have had the same carriage and
drive system for 23 years," says Richard. The carriage is constructed of
5/8-inch steel and well braced on the inside. The butt plate is made of one
inch, T-1 100,000- lb yield steel. Consequently, the machine's no lightweight at
around 23,900 lbs without options. But it was just that type of rugged
construction that caught the critical eyes of loggers looking over the machine
at the demo.
That and little tell-tale signs
like the silver soldering and use of brass or chrome bushings left them
impressed. Richard says the Forespro can accommodate 30-inch diameter stems and
up to 34 inches in a pinch. He says the 57-foot boom reach is 30 inches longer
than most delimbers. A fourcable system provides support and structural rigidity
for the boom. Sigouin says all rollers on the carriage are tandem with four
bearings per roller. The six-inch roller at the end of the boom is three times
the size of other machines, he adds.
The Forespro delimber can be
linked with a purpose-built carrier or an excavator in the 22- to 25-ton range,
although a machine at the lower end of the scale may require a counterweight.
The drive system motor and sprocket are matched to the carrier hydraulics.
Standard Hydrostar motors offer different pulling force options and delimb at
speeds of 14 ft./sec. at 65 gpm. The traction chain incorporated into the
Forespro also differs from that on other delimbers. It's a 140 doublelink gauge
Tsubaki chain made in Japan.
Richard concedes it's more
expensive than other chains but it shouldn't need changing for 8,000 hours,
offering considerably better longevity than most. There's an additional benefit,
he says. The chain's easier on the drive and motor shaft which can cost big
money to repair aside from the implications of downtime, the word least liked in
any logger's vocabulary. Richard notes that listening to loggers through the
years has resulted in a delimber that is easy to work on with accessible
maintenance points. He estimates greasing and oiling at half an hour a
Richard says options are available
to match the delimber to a logger's application within the machine's basic
design parameters. These include changes to the topping and butting saws. The
delimber's measuring system is also optional. On the standard Forespro, it's a
Quadco designed system using Allen Bradley modular components. Like the machine
itself, the components are reliable enough to provide accurate length, diameter
and optimizing solutions despite the vibration inherent with the delimbing
process. Richard was pleased with the Forespro's introduction. He believes it
will give better-established machines a run for their money.
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