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O.S. Engines® LA Series
O.S. Engines Bonus Bucks Buy a new O.S. Engine between August 3rd and December, 31st 2009 and exchange the engine you're replacing for a valuable O.S. Engines merchandise certificate.
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The easiest, most consistent and reliable performance available!
O.S. Engines LA Series
O.S. Engines Two Year Warranty   Powerful, dependable, easy to operate, maintain and appreciate — that describes LA R/C engines to a “T.” Designed as the heirs to popular FP sport engines, each and every one is engineered with a keen understanding of how you fly — and what you want. Ease and safety? Each LA R/C engine includes a needle valve that’s remotely mounted on the engine backplate, to keep fingers far from spinning props. The precision needed to achieve the fine-tuned performance you want is at your fingertips. So are an O-ring seal and ratchet spring, to help hold those hard-won settings longer against “creep” caused by air leaks and vibration. Would a longer needle eliminate the need to remove the cowl for adjustments? Just insert a 2mm diameter wire into end of the needle valve. The set screw to secure it is already in place. A flat prop washer and longer crankshaft ensure that a prop nut and spinner have the thread they need for positive engagement. The nylon backplate on the 10LA, 15LA, 25LA and 46LA gives way to a metal backplate on the 65LA. A hex head on the air bleed screw makes easy adjustments with an allen wrench a given. Here’s another given: features that favor long, dependable service. Bronze phosphor bushings contribute to smoothness. Heavy-duty webbing on a one-piece crankcase, protection against heat distortion and binding. A high profile, heat sink head and fins on the crankcase maximize cooling capacity, to defeat heat and enhance long life. All include muffler and a 2-year limited warranty. All (except (25LA & 46LA engines) also include glow plug.
LA-S Engines
O.S. Engine 25LA-S C/L
25LA-S C/L


All-out performance for Control Line!
What LA R/C engines do for R/C pilots, LA-S engines provide for C/L (Control Line) pilots. LA-S C/L engines offer all the construction and performance benefits of the LA R/C engines, with one exception: in place of a carburetor, they offer a high-performance venturi that ensures constant speed — and consistent, all-out performance. All LA-S Series engines include a glow plug, muffler and 2-year limited warranty.
10LA
LXPUD8    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
3.95 oz
Weight w/Muffler:
5.3 oz
Practical RPM Range:
2,500-18,000
BHP @ RPM:
0.27 @ 17,000
15LA
LXPUD9    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
5 oz
Weight w/Muffler:
6.5 oz
Practical RPM Range:
2,500 - 18,000
BHP @ RPM:
.41 @ 17,000
25LA
LXPUE0    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
7.0 oz
Weight w/Muffler:
9.5 oz
Practical RPM Range:
2,000-16,000
BHP @ RPM:
0.6 @ 15,000
46LA
LXGGV7    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
9.6 oz
Weight w/Muffler:
12.3 oz
Practical RPM Range:
2,000 - 16,000
BHP @ RPM:
1.2 @ 15,000
65LA
LXPUE1    ONLY     Buy Now Stock Status:
3 Easy Pay
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Weight w/o Muffler:
18.9 oz
Weight w/Muffler:
23.8 oz
Practical RPM Range:
2,000-16,000
BHP @ RPM:
1.7 @ 16,000
25LA-S C/L
LXPUE2    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
6.5 oz
Weight w/Muffler:
8.8 oz
Practical RPM Range:
2,000 - 16,000
BHP @ RPM:
0.6 @ 15,000
46LA-S C/L
LXPUE3    ONLY     Buy Now Stock Status:
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Weight w/o Muffler:
9.3 oz
Weight w/Muffler:
11.6 oz
Practical RPM Range:
2,000 - 16,000
BHP @ RPM:
0.6 @ 15,000
 

Prices shown were current at time of ad production and are subject to change.
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