DA 50 Factory Needle Settings

[3DJunk]

Hi,

Could you please provide me with the DA 50 Factory needle settings?

Also a question about the throttle servo and curve. I have set my throttle at 150% travel adjustment and is very linear, when testing on the bench. However during flight is not linear at all.

I know that the Walbro carb butterfly is not effective from a position onwards, but how I can find this position?

My peak RPM is around 7300 and at the middle of throttle stick I get 6900. Well I tried to reduce the travel adjustment (JR TRX) high positions but does not work.

Any other recommenndations on how to set this up?

Thanks in advance,
3DJunk

[RustyTumbles]

What muffler are you using? Some canisters or pipes will have a flat spot around the mid range. Try and keep the servo travel % even in each direction. I set my throttle linkage up with the TX stick in the middle and the carb butterfly half open. Then I fine tune it from there with travel % and linkage adjustments. This should get it pretty close.

As for needle setting your low needle should be approx 1 1/2, and the high 1 7/8.

[WOODisGOOD]

Sounds like you need to set up a throttle curve in the TX. What TX are you using? Also try resetting the butterfly as decribed above to be half open at half stick.

[3ddd]

put about 30% -expo on your throttle and see if this helps.this is what i do on my futaba 9 c

[3DJunk]

Hi there thanks for the answers. I have set the throttle like you wrote when carb is in the middle, stick is in the middle too.

I use a JR 9X similar to 9303. My muffler is a Pitts style by JTEC.

I may have to try some expo on throttle, has anyone done it with this TRX?

Thanks,