AZThud

Oh man watching your bird meet its end was hard to see, it was absolutely beautiful. How is the Corsair?

Cheers

Rick

Growler84

My Feedback: (8)

Hi Rick,
I have to rig the left wing fold system, cut/install gear doors, rehang the engine and reinstall the radio gear. I was well on the way until the Robart v2 Jug came on the horizon. The Jug was supposed to be a "quick build" but of course that notion melted as I started "correcting" parts of the paint scheme I didn't like.

Flyfast1

My Feedback: (1)

What is the final weight of these planes? The Robart Website says 35-38 lbs. Is there enough room inside the cowl for an opposed twin, such as DA-70? According to the DA Website, the DA-70 is 10.6" wide at the plug caps.

-Ed B.

ENZ5573

My Feedback: (7)

Hi Greg..
thanks for the info on the ziroli air scoop! do you have pics of the front of the cowling?
sorry to hear about your plane on the carbon wing tube!!
I just got the v2 and in the progress of building..I have the carbon wing tube! Should i worry about it? Should i get aluminum one?I also noticed that you are using a single cylinder 85cc motor..I know they produce more vibraton then your 50 and 60cc motors.
I have seen some 85cc motors share carbon wing tube in half on some 3D planes.
Thanks,Vincent

ENZ5573

My Feedback: (7)

Hi Ed B.
I am going with the ZP GT80 Twin. It will not fit horizontal,but should fit vertical and the top cylinder is very close to the top of the cowling. I am converting to the 1/4 32 plugs to make more room and should fit. Have to make costume exhaust.
Reason i am going with this motor?
1 one of the smallest motor in its size like 240mm for side to side
2 The plugs have extreme angle for more clearance
3 Its 6.5LB dont like to use a lot of dead weight
4 twins have less vibration
When i am done with the install i will post some pics.
Thanks,Vincent

ENZ5573

My Feedback: (7)

Hi Kirk..
Thanks! Have a safe trip to India..Very nice on the Meister FW190!
Thanks,Vincent

Flyfast1

My Feedback: (1)

I look forward to seeing how your engine choice works out. It should also have a good sound.

Thanks,

-Ed B.

Growler84

My Feedback: (8)

Please DO NOT replace your carbon wing tubes in your v2 Robart. You misinterpreted what I wrote about my v1 Robart. The picture I posted was to compare the wall thickness of the v2 tube verses the thinner wall thickness of the tube I put into the v1. The carbon wing tubes in the v2 Robart Jug are 100% good-to-go and for that matter, the aluminum tube in the v1 Robart is good-to-go as well. I should have never brought this up...

Here is the front of the cowl with the Ziroli splitter.

ENZ5573

My Feedback: (7)

Lol, ok thanks Greg! and thanks for the pic
Thanks,Vincent

ENZ5573

My Feedback: (7)

Hi..
Have a question? How much of a pain on the ass is it to the get the cowling screws on with the dummy radial? and what kind of tool are you all using?
Thanks,Vincent

Growler84

My Feedback: (8)

Put openings in the top half where the yellow circles are. For the lower fasteners go through where the bottom yellow circles are.

I use a Bonhdus 10 inch extended allen driver in the appropriate size, I bought it from Micro-Fasteners. The cowl bolts up quite easily.

ENZ5573

My Feedback: (7)

Thanks Greg!

Growler84

My Feedback: (8)

Finally did the maiden sorties on mine this past weekend. Assemble, gas, air and go. No issues at all, it required a couple of trim clicks for elevator and ailerons and was done. Its powered by an EV0/MVVS 80 turning a 26 X 12 prop. I'm more of a scale flyer but I did do a number of max speed runs to check the airframe and rigging out, the EVO 80 with the 12 pitch prop provides a lot of speed. I have a bit of down trim in my flap-elevator system (12X) but otherwise there were no trim changes required when deploying the flaps either half or full. At 41 lb dry weight the model flies light and landings are almost effortless.

ENZ5573

My Feedback: (7)

Very nice Greg! I am almost done with mine. Last thing i have is my exhaust system to do,should be ready to go in a week or so.
Great job!

G T

Good to hear you had a sucsessful maiden flight, I like you choice of engine as they are a power house at 10hp. I was at you club last year when on a trip to Vegas, nice wide runway.

quist

My Feedback: (198)

Congrats Greg

AZThud

Looks real nice Greg! Congratulations on the maiden success, I am looking forward to seeing both you and the plane at some point in the future! Cheers!

Growler84

My Feedback: (8)

Thanks all!

The Team Vegas Warbirds crowd will be at the SoCal Scale Squadron Warbirds & Classics June 10-12.

AZThud

Awesome will see you there, there are a few of the Phoenix folks heading to SoCal. Should be a very good time!

Cheers

quist

My Feedback: (198)

I thought the So Cal event was a week later, June 17-19. I bummed, I want to go there.

sjhanc

My Feedback: (3)

The pictures show the demise of a new Robart P 47 ARF on its second flight. I was beginning to disassemble my warbird to go home when I heard the DA 85 in this plane suddenly go wide open and the sound attracted my attention because it was at high altitude and obviously diving at very high speed. When I got my eyes on it the plane was at about 3-400 feet and coming straight down at the east end of our flying field. I heard the spotter call out to cut the throttle and the pilot answer that he had pulled it back but the plane was not responding. A second later it impacted and parts flew 30 feet in every direction. After I got my plane loaded I drove over to the crash site and was amazed at the impact crater it made. There were very few recognizable equipment parts left. The owner and his helper were of the opinion that when the tail separated from the fuselage (at relatively slow flying speed), the tail dragged the servo tray back stretching the throttle pushrod wide open so it would not be able to throttle back. Without a tail to stabilize it the plane went into a terminal dive dragging the tail by the indestructible carbon fiber pushrods (they were still intact after the crash).
I have never seen a wing crater before but you can see the crushed grass on either side of the main crater. Parts of the wings were some distance from the crash site. I examined the fuselage at the failure point and saw very thin fiber glass with no internal reinforcement. 35 years ago I experienced a similar fuselage failure in a popular ducted fan jet on the third flight during a slow pass to take pictures. The right flying stab suddenly fluttered and the plane dove in destroying it. My own evaluation was that the fuselage was laid up in the molds, then the mold was stood on its nose to cure allowing the resin to be pulled by gravity away from the area that failed in flight. I liked that model design and bought 3 more but I installed carbon reinforced parts in the weak area.

SIX GUNS

That's sad

Newton5019

Do you guys with hands on experience with this plane, feel a saito fg84r3 would power this plane, I've flown a 36lb esm corsair with this engine and it was matched perfectly

cheers

toby

SIX GUNS

Neton, these planes vary in weight with radio gear and landing
Gear so if your around the same
Weight and your saito is in good
Running condition there's no reason there should be a problem
What size prop are you using ?

Growler84

My Feedback: (8)

That sucks, I know because I've been there.


The mishap model sjhanc is talking about looks like a v1 Robart Thunderbolt because of the green wing skins (inside) just like the one in my wreckage photo. Regardless of v1 or v2, I don't know how the throttle could be affected by a tail coming off (if it did) because the throttle servo is mounted to the engine firewall assembly in both variants of the Robart P-47.

Circumstances aside, it is sad to loose a model like this and I feel for the owner/operator.