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91RZ-H Rear Exhaust Ringed Heli Engine |
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91RZ-H Rear Exhaust Ringed Heli Engine  | Specification:
- Displacement : 0.91 cu in (15 cc)
- Bore: 1.09 in (27.7 mm)
- Stroke: 0.98 in (24.8 mm)
- Practical R.P.M: 2,000-16,000
- Output: 3.3 hp @ 15,000 rpm
- Weight w/o muffler: 21.3 oz (605 g)
- Includes: #8 glow plug | 91-sized power designed for scale helis!Terrific news for your heli modelers: the popular and powerful .91 ringed engine now comes in a rear-exhaust design! - Pilots of Hirobo and other scale machines will appreciate how the 91RZ-H power plant will fit inside the canopy to preserve the heli's scale lines.
- Like the side-exhaust 91SZ-H, the 91RZ-H features new intake porting, new carb and a redesigned crankcase that offers better support for the crank and thrust bearings.
- Available with two heat sink heads: a larger, blue anodized head for more efficient cooling or a more compact, squared die-cast head (DH).
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Engines 
