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TopRc F4U Corsair assembly

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TopRc F4U Corsair assembly

Old 09-19-2021, 01:07 PM
  #201  
CK1
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Ruizmilton , I did get your email and responded to it requesting the other pictures you said you have and about pricing . Did you not get my email ?
Old 09-19-2021, 01:18 PM
  #202  
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Ruizmilton
another photo, the wing is finished. I have no interest with this story, I tell you what was done as modifications, if you are reassured it's good otherwise I don't care, on the other hand I understand the anger of those who bought the first version of the corsair.


Old 09-19-2021, 04:09 PM
  #203  
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Originally Posted by CK1 View Post
Ruizmilton , I did get your email and responded to it requesting the other pictures you said you have and about pricing . Did you not get my email ?
I don’t recall getting a response, still no worries, the complete explanation of what is the process to modify the wing is in the email, the pictures of the formers were included on it as well, there were a couple of pictures I did not have with me when I sent the email, they have already been posted on this thread. If there is something that is not clear let me know.

Thanks
Old 09-22-2021, 02:59 AM
  #204  
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Can any of the guys using a Saito FG 90 share the size of standoffs that you used? I’m done with the building if the airframe, servos and rigging, moving to engine installation next and need to know the size of the standoffs.

Thanks
Old 09-26-2021, 02:15 AM
  #205  
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im going a differant route with using expandable foam for the center section....may back the original spar with 4ply birch but i'm thinking consolidate all the air space and voids to act as 1 solid unit! not the entire center section just whats needed,i'll put tubes in for my wiring and block off where i dont want the foam to penetrate then put a few venting holes so excess has somewhere to go rather then blow the skins off the ribs and other structure, they sell high density 2 part foam for use in setting deck posts in the ground.
Old 09-26-2021, 01:01 PM
  #206  
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Originally Posted by BASHER View Post
im going a differant route with using expandable foam for the center section....may back the original spar with 4ply birch but i'm thinking consolidate all the air space and voids to act as 1 solid unit! not the entire center section just whats needed,i'll put tubes in for my wiring and block off where i dont want the foam to penetrate then put a few venting holes so excess has somewhere to go rather then blow the skins off the ribs and other structure, they sell high density 2 part foam for use in setting deck posts in the ground.
I think this will make the center section very heavy, and the foam will not add any strength to the stucture. For the skin yes but nog for a overall strength i think.

Geoff
Old 09-26-2021, 02:23 PM
  #207  
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Originally Posted by BASHER View Post
im going a differant route with using expandable foam for the center section....may back the original spar with 4ply birch but i'm thinking consolidate all the air space and voids to act as 1 solid unit! not the entire center section just whats needed,i'll put tubes in for my wiring and block off where i dont want the foam to penetrate then put a few venting holes so excess has somewhere to go rather then blow the skins off the ribs and other structure, they sell high density 2 part foam for use in setting deck posts in the ground.
I did that on my 85” ESM Corsair and it worked great! Still flying today. Heavier yes...but not enough to hurt flight characteristics. I doubt you will notice any difference. Bonds to the frame really well! Go for it!!!
Old 09-26-2021, 10:33 PM
  #208  
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Originally Posted by gpman View Post
I think this will make the center section very heavy, and the foam will not add any strength to the stucture. For the skin yes but nog for a overall strength i think.

Geoff
well 12oz is 12oz regardless if its feathers or lead and all weight is at or infront of cg! and this thing calls for alot of ballast to balance,although its not upfront in the cowl its still forward of cg.... my opinion is filling a empty void that does nothing to consolidating the whole center section and tieing all formers and ribs as 1 solid unit definetly will spread the load, but i'm still researching at this point.
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Old 09-30-2021, 10:14 AM
  #209  
fw190
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I have the TopRCModel Zero and Corsair, both I had to fix some kind of spar issues. I was hoping TopRCModel ARFs last longer than plastic covered ones but they do not IMHO. They make beautiful ARFs but I will never ever buy any more of them.
Old 10-28-2021, 09:59 AM
  #210  
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I have one as well and would be interested in seeing how that works, or the other fix. Also did anyone put a radial in this thing ? I seen the Moki's on youtube but those are hard to find.
Old 10-29-2021, 02:33 AM
  #211  
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Originally Posted by sgrady View Post
I have one as well and would be interested in seeing how that works, or the other fix. Also did anyone put a radial in this thing ? I seen the Moki's on youtube but those are hard to find.
i went away from the expanding foam and cut back 4 ribs to accept 2 sets of 4ply birch cut everthing out on the table saw a total of 6 pieces, they run from lower bend in gull to the entire center section with each butt joint or splice being covered with another full piece, used a combo of hysol and 45min epoxy,then i'm backing each side of ribs 1 cut with hardwood triangle stock then strips of CF cloth and resin to tie the skins into the spars along with the landing gear mounts......lotta work but rather do it now then later,i'll try and post pics, so i ended up with 12 ply birch spar
Old 10-29-2021, 02:35 AM
  #212  
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and yes im installing a ums 5 cylinder 100cc
Old 10-29-2021, 02:37 AM
  #213  
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Old 12-03-2021, 02:20 PM
  #214  
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Old 12-03-2021, 02:21 PM
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Old 12-03-2021, 02:31 PM
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Ouch !! Mine is very nice looking , still , but it has not and will not fly ..... ever .....
Old 12-04-2021, 07:32 PM
  #217  
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Claude sorry for the loss of your plane. Can you describe how your plane crashed?
Old 12-06-2021, 10:53 AM
  #218  
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Default Do not fly this plane new version or old version!

The spar system design is bad to begin with, they may have added carbon fiber in some places but it is not going to help unless they put a solid 1/4 aircraft ply spar without lightening holes. The shell surface is also very soft and it can be cut like butter. If you bounce this plane pretty good on landing, it will self destruct on its next flight and risk hurting people around you.

Lucky for me I broke the wing on its first landing and not on its second flight in the air.

Like I said before this wing design is for a 25lbs airplane, but this plane is over 40+ lbs

Last edited by fw190; 12-06-2021 at 11:19 AM.
Old 12-06-2021, 04:12 PM
  #219  
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This is why none are flying. The wing design needs a serious re-design, True engineering not that looks about right. Most competent plane builders see the problems at hand and are not willing to risk what we have spent $2500 on. Like throwing $$ down the drain!!! Sad ,as many of their planes are decent.

This stopped me from buying the P-47 and I really wanted to.
Old 12-08-2021, 06:27 PM
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Mine is almost done, wing mod was completed (I won’t comment on it since it has been discussed to death) and last time I worked on it engine installation was completed, I still need to fabricate CNC parts for a servo actuated choke mechanism for the FG90, then it is taking CG, engine break in, radio program fine tune and maiden, this is exhausting…







Old 12-09-2021, 11:45 AM
  #221  
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hello Ruizmilton
did you put right thrust and down thrust or is your engine mounted straight ?

Old 12-29-2021, 02:23 PM
  #222  
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[QUOTE=claudebrifflot;12706194]hello Ruizmilton
saito 90R3 after the crash!


Old 12-30-2021, 05:18 AM
  #223  
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Oh man, that hurts my heart
Old 01-01-2022, 09:31 PM
  #224  
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Originally Posted by Ruizmilton View Post
Mine is almost done, wing mod was completed (I won’t comment on it since it has been discussed to death) and last time I worked on it engine installation was completed, I still need to fabricate CNC parts for a servo actuated choke mechanism for the FG90, then it is taking CG, engine break in, radio program fine tune and maiden, this is exhausting…






Hi Ruiz,
Can you please post some information on what you did to modify the wing structure? Pics would be great too if you don't mind as I am interested.

Thanks in advance.

Old 01-04-2022, 06:28 PM
  #225  
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Craig:

There are some pics I posted on the previous pages of this thread, I’m posting under this new username as my original one can’t be accessed at this time (working the issue with RCU)

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