Found this now as well: Rotax Debug info: http://www.rotaxservice.com/documents/t ... oot2ST.pdf (that is for 2stroke)

Other things to check: Ignition Timing (even 0.5 degree will give you big rpm changes) Carb/s actually opening fully. Same Air cleaners (some air cleaners allow more air than others) Same carb jetting (not so easy to check) Spark plug same type/gap correct plug leads good order Resistors on plug cap...

How you Measuring the RPM, maybe the gauges are not accurate enough?

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Boet,

Hier ander manier om onder te kom

Ehlo,

What the 10% for?

Baie dinge kom in play met resonansie. Hoeveelheid silinders, 2 slag of 4 slag, hoeveelheid lemme en natuurlik: Rat verhouding. Het onlangs n BMW installasie getoetsvlieg. 2 Silinders, 4 slag, 3.4 something ratkas, en 3 lem Kief propeller. Die resonansie was so erg, die prop se lemme het in "torsio...

Boet wrote:Met die 2.43:1 ratkas is daar nie resonansies nie. Met die 2.27:1 wel. Tussen 3800 en 4200rpm. As ek kon kies 2.43, maar my bank se ek moet stil sit tot die geit bedaar.

More Boet,

Is dit met alle 2.27:1 ratkaste of is dit net geval van die prop en die ratkas?

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This is what a fan or air boat looks like Are these common anywhere in South Africa? I cannot recall having seen one. I have only seen in footage of Okavango, Everglades (USA), etc. Closest is small hovercraft, some of them do use Puller setups. there a few in SA. But doubt they will us such large ...

Duck Rogers wrote:Sorry to pee on your battery.............

Ja, that was really not necesarry

Otherwise, speak to Raasa/misasa (or which ever controlling body as per terms of part 149) to simply approve any trike/lsa pilot as approved person.. the regulations state that the designated body for that craft can issue it...... Dunno if that will happen, but worth a try, easier to fight them that...

I don't see anything when this "dual'" check suppose to happen, it simply states peformance a dual check on the maintanance which WAS carried out. for me as layman, that just mean some time in the future... like next ATF..

my 0.02 cents worth

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Maybe try these guys, they busy helping me through the process.(for small fee)
http://www.vanzylaviation.co.za/index.php?page=services

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Ek het vir jou n "bench seat" want daai bucket seat het nie jou size "bucket" nie! :evil: Sal hom spoedig daar by jou he! :lol: :lol: :oops: haha, ja... en daar ek gedog ek nog jonk en jukkerig... meer jelly-rug.. :oops: Moet nie haas nie Boet, Ek nog BAAAIE werk voor ek daar kom, en teen kaap se s...