I need the help of the group. What are people looking at to power their Q1s?

I am very interested in the Tohatsu outboard, 40 hp, 2 stroke direct injection. The engine would be mounted inverted, pto up, with a 90 degree psru to drive the prop.

This seems to be a reasonably economical way to get a modern engine. None of the smaller engines are the direct injection.

I would be uncomfortable with a 2 stroke. You might consider the half
VW from Hummel Engines, 28 to 45 hp, ~ 80 to 105 lbs.:
http://www.hummelengines.com/

Mike

Could it be that an issue with two strokes in aircraft appear to be lubrication starvation? Motorcycle road racing mitigated this issue by use of a compression release system. During deceleration the compression release would be used while maintaining throttle setting since lubrication is delivered with the fuel. Upon decent, or worse, a steep dive I think some folks have encountered oil starvation as a result of chopping the throttle and allowing the prop to windmill resulting in oil starvation and subsequent engine seizure.

Phil Lankford


On May 8, 2011, at 6:57 PM, Mike Perry <dmperry1012@...> wrote:

I would be uncomfortable with a 2 stroke. You might consider the half
VW from Hummel Engines, 28 to 45 hp, ~ 80 to 105 lbs.:
http://www.hummelengines.com/

Mike

On 5/8/2011 6:07 PM, Roger wrote:

I need the help of the group. What are people looking at to power
their Q1s?

I am very interested in the Tohatsu outboard, 40 hp, 2 stroke direct
injection. The engine would be mounted inverted, pto up, with a 90
degree psru to drive the prop.

This seems to be a reasonably economical way to get a modern engine.
None of the smaller engines are the direct injection.

[Non-text portions of this message have been removed]

[Non-text portions of this message have been removed]