Got sent some information on this engine today, It is a 54cc four stroke engine that are suppose to be hand made. (Not in China)

They are not 3D type engines but are made to turn larger props for warbirds and scale type plane.

Was told they have been in testing for a while, what ever that means. ???

But not cheap, Best I can figure about $970.00

Here is a video of one of them flying some type of aerobatic plane with a 24-12 prop at 4500 RPM. (Dont know what brand prop) Sure sounds good

http://www.youtube.com/watch?v=7vRqBX637U0

Specs that was sent to me

DS4 EL54

Back plate to prop driver 142mm
Mount hole centres 48x78mm (HxW)
Capacity 54cc
Bore 44.0mm
Stroke 35.5mm
Rev Range 1200 to 6000 rpm
Prop Range 22x12, 23x8 to 24x12
Weight 2.02kg (4.5lbs)
Oil/petrol mix 4%(25:1)
Recommended oil Silkolene Comp 2
Ignition voltage 4.8V
Plug type CM6
Spark Gap 0.025”
Valve clearance 0.005” (cold)




Milton