Pro Helicopter Engines
PRO .39H Ringed 
Displacement: 0.394 cu in (6.45 cc)
Bore: 0.850 in (21.6 mm) Stroke: 0.693 in (17.6 mm) Crankshaft: UNC 1/4 - 28 Practical RPM: 2,000 - 22,000 Output: 1.35 hp @ 18,000 RPM Weight w/o muffler: 10.22 oz (290 g) |
stock#
LXAHTD
Only
Stock Status:
Tech Notes
Accessories Needed
|
PRO .50H Ringed 
Displacement: 0.504 cu in (8.27 cc)
Bore: 0.886 in (22.5 mm) Stroke: 0.819 in (20.8 mm) Crankshaft: UNC 1/4 - 28 Practical RPM: 2,000 - 20,000 Output: 1.75 hp @ 17,000 RPM Weight w/o muffler: 14.28 oz (405 g) |
stock#
LXAHTF
Only
Stock Status:
Tech Notes
Accessories Needed
|
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