EF

Can anyone explain the difference if any, between these two?
Given that both have a throttle, is one more suited to an rc sport model, than the other?
Is the throttle effective and allows a reasonable idle for landing?
Most suitable prop?
Thanks!

Pond Skipper

The Cruiser Engine has a better crank case buy that one.
No other difference than the upgraded crank case. Hence
the $5 price increase between the two.

This is a air choke type where the barrel rotates to choke off the air intake
to lower the rpms if closed too much it will shut the engine off.
Here see this video showing the throttle assembly being tested.

EF

Thanks, that’s most helpful!

EF

Another question - is this throttled version sensitive to mounting direction (sideways vs. upright)?

My previous experience with Cox engines is only with the non-throttled version (see pic) that was indifferent to its mounting orientation.

Pond Skipper

How you have it will be worth testing prior to flying. I can see the advantages with
refueling and keeping the fuel line from being under the fuselage.