OS 40LA problems????
 

Hello this is my first post n im from england:)

i have a new Greta planes super sportster artf planes which i have built and put in a os 40la engine.

my problem is when engine is runnin at idle and i hold the nose down on the plane the engine cuts out, ?? ive played about wth the slow runin jet and the needle valve, any help here thx.


ps ,, what u think of my new plane is it any good how it fly ?

RE: OS 40LA problems????
 

Dave:

If the engine will idle reliably when the plane is level, and at high speed doesn't sag with the nose held up, I'd say it just needs more break in time.

But if it tends to go lean nose up no matter how rich you set the high speed needle I'd say that while it still may not be fully run in, the tank is too far from the engine. This will also make it go rich when nose down.

Bill.

RE: OS 40LA problems????
 

Dave:

The tank could also be improperly positioned vertically.

Bill.

PS: And welcome to RCU. Please enjoy and make use of it. wr.

RE: OS 40LA problems????
 

thx for quick reply, the engine is run in its been in a few modle of mine, so no probsthere, yer at level it ticks over nicley ive adjusted the slow runnin jet so when nose in air dont cut out or increse rpm, but when nose down cuts out, could it be where the fuel is at front of tank and clunk not bending over for it or summin
??? mabe when the plane is flyin wont cut out as movin or summin

RE: OS 40LA problems????
 

Hi!
Holding the nose down will stop any engine......

Regards!
Jan K

RE: OS 40LA problems????
 

is this truw holfing the nose down on any engine will stop it???? n er 1 else their

RE: OS 40LA problems????
 

Unless you have a tank liner that holds the fuel inside the tank and it only expands to fit the fuel, no air, then it will keep running b/c it won't be sucking in any air.