Problem DA-170

Hi! does not work at low rpm (backfire)look video

The engine is new a few flights


Prop 32/10 Mejzlik

when I give full throttle has been low.

Carburetor is fine low needle 3/4 and needle high 2 turns.
Regulating low needle does not change behavior.

Carb diaphragm is fine

Mufflers K&S to 22cm

I have also tested mufflers BMB to 13,5cm

Zundung is fine,pickup sensor is fine,tested in several positions.

Spark plug are fine.



Video, http://www.youtube.com/watch?v=BqTbdO_lSYE

DA

DA

hi

maby you cal direkt toni or gerhard about this problem...

http://www.toni-clark.com/

when the engine is new - i can't understand....

DA 170 runs perfect....

akrobatikus schrieb:

hi

maby you cal direkt toni or gerhard about this problem...

http://www.toni-clark.com/

when the engine is new - i can't understand....

DA 170 runs perfect....

Zum Vergrößern anklicken....

Hi!! I am in touch with DA-USA thanks

When you solve the problem I communicate here

Hi all, problem solved.

I adjusted the low needle to two laps and from there I have been
closing to get what you see in the video. http://www.youtube.com/watch?v=zgugXK4fVZk

Now,low needle 1 turn and high needle 2 turns RPM 5800 and good performance at low.

Hi Josin,

so it was not a problem of the Da-170, but the problem of the user to find the correct needle setup up.......?

Needle setup depends of prop, muffler, gas etc. But good to hear that all is working now perfect. DA/USA has a great support.


Regards

PW

PW schrieb:

Hi Josin,

so it was not a problem of the Da-170, but the problem of the user to find the correct needle setup up.......?

Needle setup depends of prop, muffler, gas etc. But good to hear that all is working now perfect. DA/USA has a great support.


Regards

PW

Zum Vergrößern anklicken....

Hi PW,the problem is the carburetor, it is very, very difficult to adjust the low needle.

Zitat:"it is very, very difficult to adjust the low needle. "

..I made the same experience with my DA 170.The DA100 and 85 are very simple to adjust,but the 170........ ;-)But everything becomes better after running in and the power is phantastic(over 6000 with the 32/19 Mejzlik)
br
Markus

Hi!

The DA-170 is really close to the limit how much power output is possible from this engine size.

That's why it is definitly not that easy to setup as the former DA engines were (50,100,150).

I often heard of such problems, but finally they could all be solved.

The 170 is also really sensitive to the H needle. Mine has a strong influence of the H needle on the transition (theoretical it should not, but...)

A 170 compared to a 150 is a bit like comparing an supercharged race engine with a truck engine.

The 150 even runs with diesel fuel (no joke, with some changes) .

Cheers,

Sascha