74" Edge 540

[Ohio AV8TOR]

That looks better, hopefully you did not cut your cowl opening already

 

[Chopper85]

I did my 92 this morning. Put some epoxy in a mixing cup and dilluted it 2:1 with alcohol. Then I brushed it on with a epoxy brush. Only took 10 minutes.

I have not baffled any of my motors yet, but after having to sent my DA-120 back last season I think I am going to do it to my 104 at least. [MENTION=443]ghoffman[/MENTION] is going to work with the 3D printer to make ABS baffles for a trial.




The VVRC 40 was first in a yak with direct airflow over it. Now it is in a 78 extra and has less direct airflow. I only flew it in this plane in 60 degree temps so I am not sure if there will be any issues.

After looking at the cowl and Clearence to the carb there doesn't seem to be any Clearence for a baffle on the 74 so if it is an issue the only option is to close it off or put a air ram on carb maybe.

I also just fuel proofed and used polyurathane . The only problem I had was my o.c.d kicked in again and had to force myself to not urethane the whole plane.

 

[Chopper85]

Here's some pics of the progress. Only need to Finnish some wiring and change out the opto kill for a tech aero once its delivered and go with a single battery even though its balanced perfectly with a half tank fuel with this layout so not sure if I will go single batt. Thanks for all the help everyone through the build. Will try and post the maiden flight.

 

[AtomicFlyer]

...
Here's some pics of the progress. ...

It looks like a nice clean build. Congrats.

This airframe was my first gasser. I was worried about how the CG would change as I burned up fuel. But I can't say I even notice it yet. I only have about 25 flights on my plane so far, but I fly quite a bit inverted and I don't really feel much difference in the CG between beginning and end of flight. You may be at a much more advanced level than I am, but the airframe seems pretty tolerant of CG in my experience. In my smaller electric, I could definitely feel a difference if I moved the battery pack 1/2" one way or the other.

Marc

 

[Todd Rollins]

That looks better, hopefully you did not cut your cowl opening already

Nope....Haven't cut the cowl yet. I bought a new one since the original cowl was cut for the DLE-30.

 

[Chopper85]

It looks like a nice clean build. Congrats.

This airframe was my first gasser. I was worried about how the CG would change as I burned up fuel. But I can't say I even notice it yet. I only have about 25 flights on my plane so far, but I fly quite a bit inverted and I don't really feel much difference in the CG between beginning and end of flight. You may be at a much more advanced level than I am, but the airframe seems pretty tolerant of CG in my experience. In my smaller electric, I could definitely feel a difference if I moved the battery pack 1/2" one way or the other.

Marc

Thanks Marc and thanks for the info on cg. with this beeing my first gasser i didnt know what to expect with the fuel wieght .

 

[Chopper85]

Well i just got the dx9 because i didnt like the throttle after starting the twin with the dx6i with no throttle curves. The engine started very easy and idled great but was at full throttle at 3/4 stick. Now i can also go 150% on servos and dont need to buy longer arms. Now just need to figure out programing and should be ready to maiden this weekend.

 

[Enterprise]

You will not be sorry for changing your radio. There is very little different in the DX-18 and the DX-9. The ability to do 4 servo wings, balancer, idle down mixes, knife edge mixing all make the experience so much better.

 

[Chopper85]

You will not be sorry for changing your radio. There is very little different in the DX-18 and the DX-9. The ability to do 4 servo wings, balancer, idle down mixes, knife edge mixing all make the experience so much better.

Ya I am seeing the huge differences now and trying to figure it out. The dx9 is so easy to program a basic setup but now trying to figure out the speech to switches,my god this thing does so much.

 

[Chopper85]

Got the maiden flight done and went perfect. No trim at all needed and the twin started with 5 or so flips and ran pretty good even though really rich so my next flight will lean out a bit. I am so glad i went with a gas setup. Cg is perfect. Thanks to all for answering my questions.