Pilot 35% Yak teardown/ replacement

[dhal22]

Anybody use this for airflow?

 

[dhal22]

Something isn't right. Up thrust? Wonder if I assembled the engine box wrong. Not the standoffs because they are all 3/4". Time to investigate.

 

[dhal22]

Definitely some up thrust. Maybe i had fender washers behind my upper stand offs on my last Yak.

 

[dhal22]

Been a day or two. Wings now have servos.

 

[Snoopy1]

Looks good but you need to get the lead out or the summer will be over and you will not have had a chance to fly it.

 

[dhal22]

It's been too hot to fly. I've spent the summer at the pool.

 

[dhal22]

Can't get over the obvious upthrust. Took a couple more pictures. Any opinions? It just doesn't look right.

 

[Snoopy1]

Take the cowl of and set up a Lazer line along the fuselage at zero degrees and then check to see if you have up thrust on the motor.

 

[dhal22]

Yep, need to borrow a multi line laser from one of my employees, he has several.

 

[Snoopy1]

Yep, need to borrow a multi line laser from one of my employees, he has several.

That’s the only way to make sure you are using a true zero the cowl could be messing you up.