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The "Sparrow" Twin Cylinder Steam Engine
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MSRP: $849.95
Offered at:: $799.95
You Save: $50.00 (6%)
Preorders for this batch are being accepted now. Contact us for futher details.
Item Number: 10003
Manufacturer: Monahan Steam Models, Inc.
Manufacturer Part No: 10003
The "Sparrow" Twin
Available in summer of 2008
We are proud to announce the "Sparrow" Twin.
The
"Sparrow", is a double acting, reversible, self starting, piston valve, twin cylinder 3/8" bore, 3/8"
stroke steam engine. The "Sparrow" is primarily built up from many of the components from our successful "Heron" Twin. All steam intake and exhaust
outlet thread sizes are 1/4"-40 and use 5/32" copper tubing for
plumbing.
A built in throttle valve/directional valve
which can be operated by a single servo, controls both engine speed and direction of rotation.
The
crankshaft is supported with precision grade, sealed ball bearings to
ensure a smooth long lasting hassle free work life. The Sparrow's output
shaft size is 4mm.
The Sparrow is constructed from varying grades of Brass, Bronze and Stainless
Steel. We do not use any materials that would rust in a marine
environment. A great deal of research went in to choosing materials
that would be compatible with one another as well as withstand
premature wearing. Machining finishes were also a great concern while
constructing the parts for the Sparrow. Not only for cosmetic reasons but
more importantly wear mating and sealing issues. All of our parts are
made either in-house or from local machine shops in the United States so
we have complete control over their quality from start to finish.
Every
measure has been taken to reduce weight as well. The Sparrow only weights
14 ounces including the water pump. The Sparrow was designed to run on
varying pressures from 10 psi. to 100psi.
Each engine is hand assembled per order.
The
picture of the "Sparrow Twin" shown above features the
shaft driven water pump which was designed to compliment both the Sparrow's performance as well as it's appearance. Water pumps are for
modelers who wish
to extend their steam plant's operating times. The water pumps bore is
3/16" and the
stroke is 1/8". The water pump intake/outlet thread sizes are 1/4"-40
and use 5/32" copper tube for plumbing. (Please note that the water pump is not included in the price shown but is available in the related products section.)
The Sparrow is also available as a right and left hand mirrored pair. "Special Order" with short lead times.
Introductory price: $799.99
The Sparrow's Specifications:
Overall Height: 3 5/16”
Overall Width: 2”
Overall length: 3 15/16”
Crankshaft Output Shaft centerline from Base: ½”
Overall Base dims.: 1 3/8" width 3 7/64” length
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