Trailing edge of rudder

Hi
I am finishing a M4S kit for someone and found that the previous builder made the trailing edge of the rudder and the fin very flat and sharp. The documentation states that it should not be done that way.
Does anyone know what the effect will be and if I should worry about changing it.

mariusl a écrit:Hi
I am finishing a M4S kit for someone and found that the previous builder made the trailing edge of the rudder and the fin very flat and sharp. The documentation states that it should not be done that way.
Does anyone know what the effect will be and if I should worry about changing it.

Hi Marius,
how flat (and sharp) is flat ? Any picture we can see ?
Max

Hi Max
I attached a picture. My opinion is that it is very sharp with a negative camber possibly.

It would seem that I cannot send pictures on my account. This is the error:
Impossible d'envoyer le fichier : dépassement de la taille totale de l'espace de stockage. (Espace restant : 2 Ko)

The picture is 48Kb

HI there,

edit an answer and click on the icon "floppy disk" (5th bloc, same that youtube). You can deposit a picture there...

I added the picture in the post above. Thanks for the help on that.

Hi there,

I'm not shocked but I will have a look this WE to compare with mine and post some picture also.
Can you take a more global picture, I mean to see the whole fin and rudder from the back?
Cheers,

It will be great news if it can stay that way.

Hi There,

My pictures are not that great and not on the right position but I hope you'll see the thickness of our fin and rudder comparable to your's, aren't they...
BTW where are you located?

It would seem that mine is much too flat at the trailing edge.
I am located in South Africa - Pretoria area.

Bonjour les francophones,

quelqu'un a un avis sur le profil de la direction de notre ami marius le Sud-Af ?

Marius, I've been in SAF for a while but mainly in Cap Town and P.E. and Jo'bourg...

Could you do me a favor and measure the cord of the fin at the line where the rudder and the fin join. It looks like my rudder and fin needs to be trimmed. You fin does not reach to the end of the elevator and mine does.

mariusl a écrit:Could you do me a favor and measure the cord of the fin at the line where the rudder and the fin join. It looks like my rudder and fin needs to be trimmed. You fin does not reach to the end of the elevator and mine does.

here it is, I measured 31 cm from the axis of the elevator and the edge of the fin and 27.5 cm between axis and edge of the rudder. Hope this helps,
Cheers