[kach22i]

O.S. FR7-420 Sirius7 7-Cylinder Radial 4-Stroke Engine
https://www.towerhobbies.com/cgi-bin/wti0001p?&I=LXZVB2

$3499.99

SPECIFICATIONS

Displacement: 0.6071cu in x 7 (9.95cc x 7)
Bore: 0.944" (24.0mm)
Stroke: 0.866" (22.0mm)
Practical RPM: 1,500 - 7,000
Weight: 111.7 oz (3,167g)
Crankshaft Size: UNF3/8-24
Distance from Backplate to Drive Washer: 6.2" (158.5mm)
Outer Edge of Backplate to Pushrod Covers: 4.8" (122mm)
Outer Diameter: 9" (230mm)
Carburetor Settings:
Needle valve, 2-1/2 turns open from closed position
Throttle Valve, approximately 1/4 turn open from closed position,
then start engine and follow break-in instructions on pages 19-25
in manual

jxs 06/24/10
ir/jxs

Video in link above.

You start it with your fingers, just like the little Cox engines.


https://www.osengines.com/engines-airplane/osmg1307/index.html

The impeller distributes balanced air-fuel mixture to each cylinder, which has realized long lasting stable idling.

Includes: 7 type F glow plugs, valve adjusting kit, radial mount & hardware kit, needle valve extension cable, glow plug cable set and aluminum case
Recommended props: 22x10, 22x11, 22x12, 23x8, 23x9, 23x10, 23x11, 23x12, 24x8, 24x9, 24x10, 24x11, 24x12, 26x8

http://www.supercheaphobbies.com.au/store/sirius-cylinder-radial-p-3685.html


Okay, now that's a way to start it that I can get behind.