Distance between engines

[sustainflight]

[JPXman]

[sustainflight]

[uscgairdale]

[uscgairdale]

[ozzie]

[sustainflight]

[xgary]

[sustainflight]

Shorty,

> You will notice on the 2 seater the engines sit inboard on the D cell
> about 1 foot closer to root end then on single seaters.

Counter-intuitive; I'd have guessed that the wider seating on the 2-seater would result in the engines being further apart than on the one-seater.

> If you are planning to re-locate your engines

No, just trying to spec out the differences between the one seater and two seater so I can choose the best one for my purposes.

So far Dave has provided the only measurement, 58" between crankshafts on his restored 2-seater. Does anyone have the distance between crankshafts on their 1-seater?

Nobody has shown any data on single engine service ceiling (the density altitude you can maintain with only one engine running). This concept is not relevant to the lower-power planes, but I'd be interested in knowing if the Solo with redrives, Dave's 2-seater, or others can maintain altitude on one engine, and if so, how high?

--
Craig

[xgary]

>>Counter-intuitive; I'd have guessed that the wider seating on the 2-seater would result in the engines being further apart than on the one-seater.<<

The 2 seater had about a 2 foot section between the wings to accommodate the second person. Using wings with standard engine placement would put engines about 2 feet further apart than a singe seat lazair and you would lose ruddervator effectiveness from the prop wash at slower speeds. Also on single engine operation you would end up with more yaw from the further outboard engine and likely not enough ruddervator to give you as much control as you would with the engine in further.

The single seater engine is mounted at the 2 rib from root ( the first foam rib)
The 2 Seater is mounted about a foot closer to the root.