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Posts posted by Paul Johnson 4
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For those who thought we had forgotten you and those who are still awake this is how we developed the retract unit for the FW190.
The cutting profiles used where imported in CAD as a 2 dimensional drawing in the form of a DXF file. The Wing Root and the Wing Tip. The Tip is rotated the correct amount for the washout chosen.
The outer Profile is then moved the correct distance from the Root Profile.
This is then 'Lofted' as a solid 3D object which is the cut foam core without the wing skin.
Next two planes are created across the wing to create a section that the retract plate/assembly will go in.
These plans are used to perform a 'cut' of the wing to create a section of ribs to support the retracts firmly in place
These sections are then given a thickness equal to the ply to be used to create these 'Ribs'
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47 minutes ago, RICHARD WILLS said:
as people don't look at that bit .
Groan... Master is always sweeping 'stuff' in the cupboard under the stairs.. just ask Harry
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I remember the first batch.... what trouble maker's they were....
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23 minutes ago, John Britton 1 said:
I'll take the first batch
What the WHOLE first batch? Are you gonna be popular.....
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47 minutes ago, leccyflyer said:
for a slope competition which was cancelled.
All downhill from there.....
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So true Eric... I'm still awaiting my sock....
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Now I know I'm going to get in trouble here but... I'll let you all into a secret....
The guy in green.... that IS Richard!
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1 minute ago, leccyflyer said:
for future touch up or repairs
Mmmm anyone flying in this bloody wind need spare models let alone paint!
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You can buy a small 'correct' tin then paint on white card and get them to colour match it.
I did this for my Mustang and it was a lot cheaper than all proprietary model paints... a LOT cheaper
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Seeing Richards 'Great paint Adventure ' now you know why one of 'The Boys' is green.....
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18 minutes ago, RICHARD WILLS said:
I can see Paul cringing
Grimace, cringe, gasp, moan, groan Richard trained in the art of blob-a-job....Black belt.
If you think that's bad .... NEVER look at his wiring!
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6 hours ago, Learner said:20 hours ago, Ron Gray said:
Don't worry about the boys
Obviously you haven't met the boys...especially the green one.
Survival kit. LOTS of sugar based confectionery for the green one.
Ankle protection for the little grey one.
It helps if you can borrow a ice hockey goalkeepers kit.
You might just make it....
Might!
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2 hours ago, Eric Robson said:
I had to go back 3 days later when the correct pots came in
Eric Really... a gentleman of your years queuing for POT....
I'd never have guessed....
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It's baby bro...
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1 hour ago, andrew exton said:
Richard knows what he’s doing
😄😄😆😄...Now I'm in trouble...
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16 hours ago, RICHARD WILLS said:
You're allowed to have a vote Gordon just like everyone else (except for Paul 😬).
One day I'll get my sock.... then you'll be sorry
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I am using the FMS 1700mm Corsair retracts in the hellcat and at £80 a pair is not fun when, not if, they fail.
The diecast trunnion is the issue as it fractures the fork arms if you find a bump or hole. I am currently working on something that might.... might solve the issue. I have modelled in cad the trunnion and have spoken to a few material suppliers regarding different materials to 3D print a replacement. This is the original part.
This is the modified part once I have had a chance to test the latest material suggested to me, I can let you know if your interested.
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The biggest problem with the Hellcat is twistnturn retracts, the cost and fragility of them.
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30 minutes ago, Ron Gray said:
And even an authentic crater by the looks of it!
Na.... I farted..
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2 hours ago, RICHARD WILLS said:
and yet we have not had more than one or two enquires for my Spitfire or Hurricane kit in the last year !!
With the large amount of patriotic modelers on the forums I'm amazed at the non existent sales for the Spitfire...
This model is not so removed from the the complexity of the FW190 and Tempest
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Warbirds Replicas FW190 - the 2023 version
in The 2024 Forum Mass Build
Posted
From this I can now create a plate the correct width and length to mount the retract unit on. Small tabs are added to interlock the completed assembly.
A drawing is created for the retract cut out based on the manufacturers drawing dimensions.
This is then turned into a solid part.
This part is placed into the mounting plate rotated to the correct angle .
And a cut performed to create the finished section.
The upright supports are created as a 3D model
And the assembled unit is placed at the correct angle between the the ribs.
Again a cut is performed