The standoffs in the photo look longer than stock. If so, that could contribute to airframe vibration.

Looks like my old pilot yak.. it had acDA 50 in it when i had it then i sold it back to Freddie.. thats a nice flying plane.. i wish i woulda kept it! Lol

An overly rich fuel mixture on the low needle will definitely cause some wicked shakes - try leaning it a bit.

Can you flex the engine on the firewall or is it solid

I received the stuff in the mail I needed to check the timing, however now I'm out of the state for work till friday so I'll check that when I get home.

Originally Posted by Aviator999

Yep, would say from the pic that your timing is on the advcanced side.
Loosen both srews on the hall sensor and move it all the way down.
Guess this will improve your idle.

Cheers

No, I added another brace but it was solid before that.

Originally Posted by boothg-3

Can you flex the engine on the firewall or is it solid

Where you the guy that came up to talk to me at Joe Nall about the bears? I think you where flying a 3dhs demonstrator.

Originally Posted by 3DJP

Looks like my old pilot yak.. it had acDA 50 in it when i had it then i sold it back to Freddie.. thats a nice flying plane.. i wish i woulda kept it! Lol

I checked the timing and I had it set to about 30-35 degrees Before TDC. I changed it to 28 Degrees following this process:

Checked for TDC (this is the lowest black mark on the case)
Put the plug into the boot and marked how far after the sensor the plug fired
Moved that point back 9.78mm (28 degree, the D is 40mm and I used a business card to get the arch right when I marked it. )
This point is the top black mark on the case, the middle one is if the sensor is all the way to the right.

Does this sound right?

Originally Posted by koenig427

Where you the guy that came up to talk to me at Joe Nall about the bears? I think you where flying a 3dhs demonstrator.

Yupp that was me.. cant wait to go next year!!

Tuned the high and low, new plug, new gas, set the timing to 28degrees btdc. Ran well today, I took a video the link is below.

Pilot Yak 54 DLE 55 idle (0 min 48 sec)

Excellent, I am glad you had success

Cheers

Glad it improved.

In a related question: does leaning the LSN really make much difference?

My securely mounted DA50 with as balanced a prop as I can make it, also vibrates a lot at idle. I doubt it's an ignition issue as it recently was serviced by DA.

Thoughts?

PD

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I've never seen any 2 stroke engine regardless of what it is mounted in that doesn't idle smoother when properly leaned to proper tune. Depending on a number of factors, some engines will idle smoother than others.

Originally Posted by Marmalade1

Glad it improved.

In a related question: does leaning the LSN really make much difference?

My securely mounted DA50 with as balanced a prop as I can make it, also vibrates a lot at idle. I doubt it's an ignition issue as it recently was serviced by DA.

Thoughts?


PD

Sent from my SM-G930T using Tapatalk

A well adjusted carb will cause an engine to run smoother, but from what I have found is you have to really be off by quite a bit to make an engine run really rough. Like to the point where I certainly wouldnt fly it rough.

But I will say, I just got my first DA engine and seem to have the opposite situation as you. A brand new DA50 and I just maidened the plane last weekend. I dont want to start a whole debate here, but I noticed right off the bat as soon as it fired up it was substantially smoother than my DLE 55RA. They both have balanced Falcon carbon props and balanced spinners. I never thought that the DLE really shook much, until I ran the DA. I sure do hope the DA gets stronger though, the DLE has noticeably more power.

Flew the plane agian today, needed a half a screw driver in on the low but other than that it ran fine and no major vibration.