light kicks in the rudder pedal

Michele Riccobono wrote:

I had this problem in the past on a Tecnam Sierra powered by a Rotax 912ULS (100Hp).

Those light kicks are usually sign of one cylinder misfiring or having anyway some combustion issues. In my case I later discovered it was caused by water deposit in the carburator sumps.

I recommend you open them and check whether for whatever reason water arrived there.

for me the issue was caused by the water separator funnel I was using for refueling, loosing his water separation capacity due to long term exposure to Italian MOGAS.

You may be correct however I can't see it - an engine miss for whatever reason would normally be registered, by the pilot, forward not aft.

A "kick" through the rudder just doesn't seem likely from an engine miss - how would this be translated to the rudder?

Sean Griffin wrote:

Michele Riccobono wrote:

I had this problem in the past on a Tecnam Sierra powered by a Rotax 912ULS (100Hp).

Those light kicks are usually sign of one cylinder misfiring or having anyway some combustion issues. In my case I later discovered it was caused by water deposit in the carburator sumps.

I recommend you open them and check whether for whatever reason water arrived there.

for me the issue was caused by the water separator funnel I was using for refueling, loosing his water separation capacity due to long term exposure to Italian MOGAS.

You may be correct however I can't see it - an engine miss for whatever reason would normally be registered, by the pilot, forward not aft.

A "kick" through the rudder just doesn't seem likely from an engine miss - how would this be translated to the rudder?

Because on the Sierra the pedals are connected to the nose landing gear which is in turn connected to the engine mount. The engine misfire generates a torque spike that is then fed to the pedals through the structure of the engine mount and nose landing gear.

Michele Riccobono wrote:

Sean Griffin wrote:

Michele Riccobono wrote:

I had this problem in the past on a Tecnam Sierra powered by a Rotax 912ULS (100Hp).

Those light kicks are usually sign of one cylinder misfiring or having anyway some combustion issues. In my case I later discovered it was caused by water deposit in the carburator sumps.

I recommend you open them and check whether for whatever reason water arrived there.

for me the issue was caused by the water separator funnel I was using for refueling, loosing his water separation capacity due to long term exposure to Italian MOGAS.

You may be correct however I can't see it - an engine miss for whatever reason would normally be registered, by the pilot, forward not aft.

A "kick" through the rudder just doesn't seem likely from an engine miss - how would this be translated to the rudder?

Because on the Sierra the pedals are connected to the nose landing gear which is in turn connected to the engine mount. The engine misfire generates a torque spike that is then fed to the pedals through the structure of the engine mount and nose landing gear.

Ah! That's very interesting - Does a "Just aircraft, Escapade " have a similar nose wheel/rudder relationship?

Nose-wheel  

No the nose-wheel his free on a Escapade