ORIGINAL: Mr67Stang
From The TH web site:
DLE-55RA ''Output: 5.5 hp @ 8,500 RPM''
DLE-55 ''Output Power: 5.5 HP at 7,500 RPM''
Both have the same power potential but the higher band of the RA model will allow for more speed. The trade off will be less bottom end torque for a slower spool up into the power band. As far as why? It has to do with the different porting of the cylinder. Changing the porting on a 2 stroke is much like changing the cam and valve size in a push rod engine. The new design allows for a higher RPM peek but obviously gained no ''extra'' overall power in this case. Anything more than that would just be guessing so I will wait fore a DLE designer to chime in to explain.
From " DLE " Web Site :
DLE takes 50cc performance to a new level with the rear exhaust DLE-55RA. Everything about this engine screams performance, from the piston skirt - designed to be lightweight for quick throttle response and tons of power - to the rear exhaust that lets you easily install a tuned pipe in your aircraft. The 55RA provides 100 more rpm than the standard DLE-55. It includes engines standoffs, electronic ignition, spark plug and Pitts style muffler.
Specifications:
Stock Number: DLEG0055
Displacement: 55.6 cc (3.392 cu in)
Bore: 1.77 in (45 mm)
Stroke: 1.38 X in (35 mm)
Weight: 3.5 lb (1.59 kg)
RPM Range: 1,350-8,500
Output: 5.5 hp @ 7,500 rpm
This also stated a RPM range up to 8,500 for the standard DLE 55.
Now what is it guys, 100 or 1,000 ?
I think we are actually talking 6 of one and half dozen of the other.
