Specifications

www.ripmax.com
Distributed to all good model shops by: See the full Ripmax range at www.ripmax.com
NEW ITEMS 2012
51
Dimensions (mm):
A: 52
B: 25
C: 98
D: 61
E: 102.7
F: 54.4
G: 43
H: 42.9
J: 81.2
S: UNF 5/16-24
Displacement: 14.95cc (0.91cu.in.)
Bore: 27.7mm (1.09in.)
Stroke: 24.8mm (0.976in.)
Power Output: 3.4PS @ 15,000rpm
Practical RPM: 2,000 ~ 16,500rpm
Weight: 625g (22.05oz)
L-OS18641 O.S. Speed 91HZ-R 3C ...£394.99
O.S Speed 91HZ-R 3C
When it comes to designing engines
expressly for the F3C competition,
OS is on a never ending quest to
produce the best engines in the
world, culminating in the new
Max 91HZ Ring. The 3C version
of the 91-HZ is designed
expressly for F3C competition
with controlled, precise manoeuvres
in mind so you can achieve faster
flight speeds and improved
hovering stability.
Displacement: 14.9cc (0.91cu.in.)
Bore: 27.7mm (1.09”)
Stroke: 24.8mm (0.98”)
Power Output: 3.6PS @ 15,500rpm
Practical RPM: 2,000 ~ 16,500rpm
Weight: 603g (21.2 oz)
L-OS18645 O.S. Speed 91HZ-R 3D w/Pipe .............................................. £499.99
O.S Speed 91HZ-R 3D w/Pipe
L-OS13941 O.S. MAX 21XM Ver II Outboard ........... £339.99
O.S. max 21xm ver ii outBOARD
Displacement: 3.5cc (0.21cu.in.)
Bore: 16.6mm (0.654”)
Stroke: 16mm (0.630”)
Power Output: 1.3hp @ 25,000rpm
Practical RPM: 3,000 ~ 25,000rpm
Weight: 682g (24oz)
Take down the competition with the
21XM Version II Outboard Marine
engine from O.S.! Designed
expressly for small and medium
sized outboard boats, it retains
many of the features found
on the successful 21XM,
including the 20J carburettor
and #8 glow plug.
New additions include efficient
air cooling, a larger muffler,
aluminium tilt transom
mounting plate,
outboard unit
with flexible
propeller
and blue
anodised
aluminium
heatsink
head.
Dimensions (mm):
A: 52
B: 25
C: 98
D: 61
E: 102.7
F: 54.4
G: 43
H: 42.9
J: 81.2
S: UNF 5/16-24
Dimensions (mm):
A: 48.5
B: 37.5
C: 46
D: 25
E: 45
F: 46
G: 87
H: 219
I: 34.5
The
Complete
Outboard
Unit!!
J: 86
K: 149.5
L: 183
S: UNF 5/16-24
O.S. is taking their new
91HZ-R to even higher levels
of performance thanks to
the new "on demand"
regulator system. Designed
specifically for this engine, the
system guarantees the steady fuel
supply needed for the most-
demanding of 3D flights
with constant, vigorous
attitude and
throttle
changes.
The 91HZ-R also performs well as an F3C powerhouse providing
a steady, smooth run and exacting mixture controls.