CARF F4U-1 Corsair build thread
08-29-2014, 08:14 PM
#2777
Just curious, who has flight exterience with this plane fully loaded with stores like two ext. tanks and rockets or two bombs and rockets.
What was the AUW and what engine was used?
Is the general consensus that this plane has a light, medium or heavy wing loading with a Moki 250?
I have this kit waiting to go next and I have the 250 so Im curious how far to go with it before its too heavy and sketchy to fly.
What was the AUW and what engine was used?
Is the general consensus that this plane has a light, medium or heavy wing loading with a Moki 250?
I have this kit waiting to go next and I have the 250 so Im curious how far to go with it before its too heavy and sketchy to fly.
08-30-2014, 01:41 AM
#2778
Just curious, who has flight exterience with this plane fully loaded with stores like two ext. tanks and rockets or two bombs and rockets.
What was the AUW and what engine was used?
Is the general consensus that this plane has a light, medium or heavy wing loading with a Moki 250?
I have this kit waiting to go next and I have the 250 so Im curious how far to go with it before its too heavy and sketchy to fly.
What was the AUW and what engine was used?
Is the general consensus that this plane has a light, medium or heavy wing loading with a Moki 250?
I have this kit waiting to go next and I have the 250 so Im curious how far to go with it before its too heavy and sketchy to fly.
08-31-2014, 01:02 AM
#2780
We also had an experimentaL smoke system for the guns on board. It was heavy and didn't work properly. We wound up removing it before the competition started that week. This brought the weight down by about 8 lbs. Even with the less efficient Solo prop, the Moki is awesome.
08-31-2014, 05:21 PM
#2781
Gary, Finally got around to mounting the moki after I got the new spacers. The manual says 2.5 degree right thrust. Does this look right in the photos? Wondering if I put the spacers in the wrong spot, but the horizontal component looks perfect.
Could you post your template again so I can make sure I have the right ones in the right place?
Thanks ,Mike
Could you post your template again so I can make sure I have the right ones in the right place?
Thanks ,Mike
09-28-2014, 06:49 PM
#2782
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Can some of the owners tell which servos were used and if they differ, where you placed the different ones? Also how many total were used. By different I mean torque difference. I noticed the flaps take 4 servos. Is it necessary to use 400 oz servos on these surfaces as well. I don't guess its a good time to start trying to skimp after coming this far but I am wondering.
10-05-2014, 03:20 PM
#2783
Gary, Finally got around to mounting the moki after I got the new spacers. The manual says 2.5 degree right thrust. Does this look right in the photos? Wondering if I put the spacers in the wrong spot, but the horizontal component looks perfect.
Could you post your template again so I can make sure I have the right ones in the right place?
Thanks ,Mike
Could you post your template again so I can make sure I have the right ones in the right place?
Thanks ,Mike
Mike,
What are the length's of your spacers?
Thanks,
John
10-05-2014, 03:49 PM
#2784
Hello John. Your work is looking good.
On the standoffs, here is the layout. Facing the firewall, the longest one is on the lower right side, the second longest is on the upper right location, and the shortest is on the left location. This will give you the 2.5 right, and .5 up the manual calls for. This arrangement has proven to be very good with both the Moki 250 and 215, with the three blade props.
The spacers are:
A - location = 0.87
B - location = 0.81
C - location = 0.71
These are for both the 250 and 215. This will give you a scale proximity to the cowl.
BTW, I sell these stand-offs in stainless steel for $21.50 a set.
On the standoffs, here is the layout. Facing the firewall, the longest one is on the lower right side, the second longest is on the upper right location, and the shortest is on the left location. This will give you the 2.5 right, and .5 up the manual calls for. This arrangement has proven to be very good with both the Moki 250 and 215, with the three blade props.
The spacers are:
A - location = 0.87
B - location = 0.81
C - location = 0.71
These are for both the 250 and 215. This will give you a scale proximity to the cowl.
BTW, I sell these stand-offs in stainless steel for $21.50 a set.
Last edited by ram3500-RCU; 10-05-2014 at 03:55 PM.
10-05-2014, 04:19 PM
#2785
Can some of the owners tell which servos were used and if they differ, where you placed the different ones? Also how many total were used. By different I mean torque difference. I noticed the flaps take 4 servos. Is it necessary to use 400 oz servos on these surfaces as well. I don't guess its a good time to start trying to skimp after coming this far but I am wondering.
ailerons (2) 400 oz or better (8711)
elevators (2) 400 oz or better (8711)
rudder (1) 400 oz or better (8711)
flaps (4) 188 oz or better (8411)
A variety of servos work for the other functions.
10-09-2014, 09:30 AM
#2787
Highly recommend Gary's standoffs, they are very nice, I must have got them out of order, need to double check. My corsair is in storage for a while, a comp arf mustang jumped in front of it. Plus, it gives more time to wait for the rest of the accessories Gary is making 
10-26-2014, 10:38 AM
#2788
Here are some pictures of the repair to John's Corsair. You may recall that it was subjected to a dead stick while being flown by the expert flyer Dino DiGorgio, at this years War Birds Over Delaware. Turned out that the Moki 215 suffered a catastrophic internal failure. The plane was landed dead stick with the gear up. Wings were level and the plane was slowed as much as possible. The gull part of the wings dug in and slammed the nose into the dirt. The sudden decelaration was more than the fuselage could handle and it broke in half just behind the wind screen, as you can see, throwing the aft section over the wing. Fortunately, this material breaks clean with very little buckling. It went back together very well.
Last edited by ram3500-RCU; 10-26-2014 at 10:53 AM.
10-26-2014, 10:51 AM
#2791
Next, I used Carbon Fiber strands, 1/64 ply, and Hysol, to layer a reinforcement patch over the inside of the break, after using my balsa perforator on the inside of the damaged area . I will be adding this reinforcement to all CARF Corsairs I build going forward. This is a weak point on this fuselage. Fortunately, it is behind the anchor structure for the rear wing bolts, so no wing alinement issues are involved.
10-26-2014, 10:58 AM
#2792
For sure. Worse, I was standing next to the owner John, and the pilot Dino when the engine suddenly quit at the start of a low high speed pass. Seeing it all unfold was shocking to say the least. Dino did a masterful job of getter her slowed down and made a good dead stick. The Corsair is NOT a good gear up dead stick airplane because of that gull wing. The P-47, for example, will slide in quite well on that big belly pan. Not so the Corsair. She will not slide.
Last edited by ram3500-RCU; 10-26-2014 at 11:02 AM.
10-26-2014, 11:11 AM
#2796
Meantime, we have more Corsairs to build and many customizing parts to get out. I will be going threw a fresh round of power canopy installs soon, and will be postings pictures for those of you also getting into this phase of building. They will have the electric drive as before. Johns Corsair has this addition. It survived the crash with only minor damage. The canopy was undamaged.
10-27-2014, 06:55 AM
#2799
Not sure what caused it, but two connecting rods broke. Miraculously, it didn't take out the case, so repair was possible and financially made sense. It will be good as new after about 2 grand. It had the correct oil and mix, baffled, and was never over revved (while we had it). It was bought as a used "low time" engine.