O.S. Engine logo

70SZ-H Ring 3D Heli Engine


.70 SZ-H Ring 3D Heli Engine

Increase power—with drop-in ease!

You want MORE POWER to give your .60-size helicopter more authority in challenging maneuvers. You don't want to take on time-consuming mounting modifications and gearing changes.

O.S. has the answer: the 70SZ-H. It installs in the same space as a .61, and operates in virtually the same rpm band...so you can upgrade in an instant, and right away enjoy extra muscle for 3D flying and FAI F3C competition.

.70 SZ-H Ring engine's carburetor
The 70SZ-H Ring engine's carburetor includes a mid-range needle that enables pilots to achieve extremely precise adjustments.
push/pull throttle arm
A push/pull throttle arm offers added finesse and precision in power control.
Additional lugs are provided on the crankcase
Additional lugs are provided on the crankcase for increasing stability in models with mounts able to take advantage of them.

2-Year Warranty icon SPECIFICATIONS
Stock Number: OSMG1972
Displacement: 0.702 cu in (11.5 cc)
Bore: 1.016 in (25.8 mm)
Stroke: 0.866 in (22.0 mm)
Practical rpm: 2,000-18,000
Output: 2.5 hp @ 16,000 rpm
Weight w/o Muffler: 19.5 oz (553.5 g)
Requires: Muffler & fuel
17000 70SZ-H Ring Parts Listing

O.S. Engines Home Page  |  Airplane Engines  |  Car & Buggy Engines  |  Boat Engines  |  Heli Engines  |  Accessories  |  Parts Lists & Manuals  |  Product Reviews  |  Engine Dimensions Chart  |  Where to Buy  |  FAQ  |  Contact Us  |  Promotions

Copyright © 2002-2009 Hobbico, Inc. Terms of Use
All rights reserved. Do not duplicate or redistribute in any form.