RE: TF GS P47 Build - yeah another bloody one!!  
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RE: TF GS P47 Build - yeah another bloody one!! - 1/13/2005 12:40:44 AM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		make that 3 days in a row - what a record!

ok not a lot done last night but did get all the forward fuz sheeting done.

Will do the rear turtle deck and the fin fairing tonight. Piccie post tomorrow.

roger and out , wilco

ever wondered how come on a radio circuit everyone knows this roger guy? Guess he must be really popular.

unlike the poor bugger Bill Posters. Walk past most contructions sites or on a lot of walls and you will see these signs saying "Bill Posters will be prosecuted" Wonder what he did ??

ever wonder what a lert is? Everyone keeps asking people if they are alert, how can we tell if we don't know what one is?

Lerts must be funny creatures

cheers
Peter

(in reply to Peter_OZ)
       Post #: 101

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 3:32:01 AM   
aps f4u



Posts: 209
Joined: 1/15/2004
From: Centerville, IA, USA
Status: offline 		Ok, I have a problem with the wheel size, and how it won't allow the retarct to lock out in the up position because the wheel interferes with th ribs and with the rib section completly removed down to the sheeting, it still won't allow the gear to lock out in the up position? is ther a miss print in the instructions were it says to use a 5" wheel, and should probably read 4"wheel? I cant figure it out, but I dont think it was in my bad part.
Are any of you out there building this kit running in to any problems like this? So far it has been an enjoyable build....untill this. I guess I'm a little upset that I spent $32 on wheels that won't work, and I probably won't ever use them, as this will be the last of giant scale anything that I build, man this thing is big!!.....or at least bigger than anything that I have ever built.
Any feed back on what you guys did to make this work, or if some of you did just go with 4"wheels because of this, please let me know. Thanks

a

(in reply to Peter_OZ)
       Post #: 102

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 9:04:58 AM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		aps,

the fact of the matter is TF have located the retracts in a non scale location. Check your 3 views and you will see what I mean. On the full size they cant back at an angle with respect to looking from above. that way the wheels are housed back where the wing is at it's thickets. The way TF have done leave very little room for wheels.
Robart did modify the 622 series retract to help aleviate the problem . What retracts do you have? Mine are the 622-P47.

However having said all of that I am redesigning the wing and locating the retracts in the scale location. In order to do that I will cut through the main spar and then fit a sub spar inboard of the main, they are in parallel and will overlap each other by quite a bit to distribute the loads. a bit of carbon fibre will also help.

There are thinner wheels out there, try some of the UK sites.

cheers and don't be put off!!!!

Peter

(in reply to aps f4u)
       Post #: 103

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 9:14:32 AM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		More progress today, nothing done last night as we got home late and I was buggered.

All the top of the fuz is now done bar filling and sanding.

flipped it over and have dry fi F1B through F5B, LCC, RLC. Need to do a little trimming here and there so will leave it at that for now.

Have also reinforced the stab joint. May even get some chopped strand but it prob does not need it and will only add weight just where I do not want it. The fin to stab joint will be externally reinforced with 2Oz cloth along the fillet area.

Some piccies posted.

yibida yibida that's all folks!!

cheers
Peter

p.s oops just remebered I forgot to add in the tank floor, will do it later

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(in reply to Peter_OZ)
       Post #: 104

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 9:17:19 AM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		one more showing all the giblets dry fitted

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(in reply to Peter_OZ)
       Post #: 105

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 5:11:24 PM   
aps f4u



Posts: 209
Joined: 1/15/2004
From: Centerville, IA, USA
Status: offline 		Peter,
I am using the robart P-47 622 also, and I was wondering if one could shim up both of the mounting rails to raise the base of the retract, and allow the wheel to drop lower in to the wells? I cant get them to lock out even with the rib completly removed down to the sheeting, the wheel still touches up against the sheeting.

(in reply to Peter_OZ)
       Post #: 106

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 5:18:08 PM   
CraigM


 

Posts: 97
Joined: 2/7/2002
From: Austin, TX, USA
Status: offline 		Peter,

You've probably already thought about this, but when you set the gear back at an angle make sure that you also set the mount on an angle from top to bottom. This willcause the wheels to set in at an angle rather than parallel with the spar, but it you don't set the mount on an angle, then the wheels will be toed in significantly when the gear is down.

If you play with the angles of everything, you will see what I mean.

If this is not clear, let me know and I'll try to reword it.

I haven't started my wing yet, but when I started working out the angle of everything, I saw a problem with toe in, so I talked with some guys at my club who have built scale warbirds and we figured out what needed to be done.

Craig

(in reply to aps f4u)
       Post #: 107

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 6:41:36 PM   
RWHorton


 

Posts: 74
Joined: 1/14/2005
From: Billings, MT, USA
Status: offline 		Hello guys (gals) New to this site. Great site and lots of info.

Kirk I have a question, It must be fate but I am building the TF GS P-47 and I did all the upgrade you made, I sure didn't see the landing gear area strong enough,even chose the ZDZ 80.But anyway have you flown the plane yet and if so how does the ZDZ 80 perform?

Thanks

(in reply to Peter_OZ)
       Post #: 108

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 8:00:54 PM   
FalconWings



Posts: 2622
Joined: 3/27/2002
From: Fort Worth, TX, USA
Status: offline 		Guys,

1. How do you cut a perfect wheel well circle once sheeting has been applied?

2. I have the early generation Robart 622's. if I purchase the upgrade, will they fit perfectly inside the wing when retracted?

Did you guys know that in TF's website they have an annex for buidling scale landing gear doors? sweet!

_____________________________

Never argue with an idiot. They drag you down to their level and try to beat you with experience.

(in reply to RWHorton)
       Post #: 109

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 10:28:58 PM   
heliraptor


 

Posts: 336
Joined: 8/4/2002
From: Colchester, Essex, UK,
Status: offline 		Falcon Wings

Where is the gear door build up on the Top Flite site ??

Can't find it.

If I was cutting through sheeting I would lay down the retract to get the wheel diameter and location, using a dremel cut it undersize, then slowly using a sanding drum on the dremel open it out to get the right size and shape, this way your balsa won't get split up.

Cheers

Lee

(in reply to FalconWings)
       Post #: 110

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 11:03:03 PM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		aps, the only thing you could probably do is to twist the angle of the axle but in so doing you bring in toe in/out, you will need to fiddle with the angle of the mount to compensate.

It really is poor desgn on the part of Tf in order to simply the wing structure they totally stuffed up the retract location and mounting.

Good luck
cheers
PEter

(in reply to aps f4u)
       Post #: 111

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 11:11:22 PM   
Peter_OZ



Posts: 4366
Joined: 6/5/2002
From: Brisbane, , AUSTRALIA
Status: offline 		Craig,
yup thought of that problem, haven't totally worked out the solution yet but have a good friend who has done it before so not overly worried at this stage. Once I start on the wing he will come over and lend his expert advice both on the sub spar and reinforcement and on the correct angles for the retracts.

It is fairly similar problem to that on a spitfire and he has just completed a 92" Mk XIV - almost same plane as my Mk XII, same molds just different fin/rudder.

90% of problem solving is identifying that there is a problem. The solutions are then quite simple if thought out.


cheers
Peter

< Message edited by Peter_OZ -- 1/14/2005 11:12:35 PM >

(in reply to CraigM)
       Post #: 112

RE: TF GS P47 Build - yeah another bloody one!! - 1/14/2005 11:17:23 PM