HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Feb 16, 2009, 12:21 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
Build Log
F8F2 Bearcat

Ok you PSS guru's I pulled out my old Ziroli Bearcat plans out and started tuning it into a sloper . So here's my Question the section at the root is about 3.0 " thick , I'm going to stretch it to 90" from the original 86" But changing the section to Rg14 . So do I thin it out or what ??? the old section is just so chunky . the fuse is coming along just fine and i think I'm aiming at around 15 kgs AUW but have to wait and see on that one ,Anyway your views would be greatly appreciated.
SteveW

vid for reference
The F8F-2 grumman Bearcat Maiden (4 min 3 sec)
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Last edited by steve wenban; Jun 26, 2012 at 02:34 AM. Reason: put it into correct category
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 16, 2009, 01:39 AM
TEAM OZSKUNKWORX
r/c junkie's Avatar
KORUMBURRA IN THE BOONDOCS
Joined Jan 2006
4,778 Posts
Very good Steve looking forward to seeing the progress of this beauty.

Shane
r/c junkie is offline Find More Posts by r/c junkie
Reply With Quote
Old Feb 16, 2009, 02:25 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
Thanks Shane ,
I would like to get some Idea's on the wing thickness though cutting a 3.0"thick wing sort is against thegrain for me these days lol.
SteveW
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Old Feb 16, 2009, 02:37 AM
I failed linkage geometry
salisbug's Avatar
Melbourne, Australia
Joined Jun 2002
4,230 Posts
Looking good Steve. That's a novel building method. I've not seen it before.

As for the RG14. How thick will it be at the root? A warbird looks rediculous with a really thin section IMO.
salisbug is offline Find More Posts by salisbug
Reply With Quote
Old Feb 16, 2009, 10:15 AM
"Still Crashing since 1960"
rcairnut's Avatar
Pierre, SD, USA
Joined Dec 2001
1,112 Posts
SteveW

This looks like a very interesting project,

Are you locked into the RG14?

I would go for a thicker foil also maybe an MH32? It is a good all rounder and will not need epic lift. Or an AG-40 could be nice looking and a touch faster. As you know there is a LOT of options.

my $0.02

nut
rcairnut is offline Find More Posts by rcairnut
Reply With Quote
Old Feb 16, 2009, 10:39 AM
Embrace the suck
nauga's Avatar
Joined Nov 2004
4,268 Posts
Love the frame-up. Are you going to strip plank it or is this a plug or...?

Nauga,
with his own ironworks
nauga is offline Find More Posts by nauga
Reply With Quote
Old Feb 16, 2009, 10:54 AM
Firecracker!
BillO's Avatar
San Francisco & Santa Cruz
Joined Oct 2004
2,339 Posts
I'm no expert, but Nauga builds chunky jets with a regular slope 7% RG14 foil and about a 20-25 oz/sq ft wing loading. He seems to like the results, but then he flies them at Fermin...

Check out http://www.rcgroups.com/forums/showp...8&postcount=17 and there are several others too.
BillO is online now Find More Posts by BillO
Reply With Quote
Old Feb 16, 2009, 11:43 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
wing thickness Glenn Probably stay with the big chunky 3.0" section however I do like the MH32 that Nut suggested . The method of build I'm making up as I go along lol , of course there will be some stiffeners and load speaders installed around high stress area's,such as wing saddle and tail mounting . and a few ligthening hole through the keel . Nauga nope this is a one off no plug , I'd love to get my hands on some 10 litho plate and sheet it ala fullsize complete with rivets failing that it will be covered in 0.020" cardboard and resin coated once again sheeting as per full size that way I get the Panel lines without a marking pen .
SteveW carver of block foam
P.S if GWS can do it so can I
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Old Feb 16, 2009, 12:07 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
have to get hold of Ziroli and order a Canopy to.
SteveW
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Old Feb 16, 2009, 12:28 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
More thinking out loud , i was considering making the centre section fixed and have detachable outer panels that way i could do a built up centre section which would be a hell of a lotl lighter than 3 inches X24 inch chord block of foam .
SteveW
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Old Feb 16, 2009, 12:35 PM
Registered User
Geode's Avatar
San Jose, CA
Joined Jan 2007
795 Posts
That's a creative way to make the fuselage. Thanks for sharing.
Geode is offline Find More Posts by Geode
Reply With Quote
Old Feb 16, 2009, 02:19 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
Thanks ,
I cant take credit for the form of building My late mentor Lloyd Dipple was the one that gave my the inspiration to use this method many years back he built a JU W33 Junkers on floats had a 16 foot span and a 125cc lawnmower motor in it , built for the flying shots of a mini series called Flight into hell same technique he used Ive kept in the back of my mind for along time . Yes its really a quick method of model building need to be for the movie business . And the more I think about it the more I like the Idea of a built up centre section for the wing the outer panels will be foam core card board sheeted and resin coated as well . All I can say at the moment is that its taken over my entire work bench and after shaping I walk out of the workshop looking like I just walked through a blizzard .
SteveW working with snow shoes on
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Last edited by steve wenban; Feb 23, 2009 at 12:54 PM.
Reply With Quote
Old Feb 16, 2009, 02:32 PM
"Still Crashing since 1960"
rcairnut's Avatar
Pierre, SD, USA
Joined Dec 2001
1,112 Posts
Quote:
Originally Posted by steve wenban
Thanks ,
I cant take credit for the form of building My late mentor Lloyd Dipple was the one that gave my the inspiration to use this method many years back he built a Ju32 Junkers on floats had a 16 foot span and a 125cc lawnmower motor in it , built for the flying shots of a mini series called Flight into hell same technique he used Ive kept in the back of my mind for along time . Yes its really a quick method of model building need to be for the movie business . And the more I think about it the more I like the Idea of a built up centre section for the wing the outer panels will be foam core card board sheeted and resin coated as well . All I can say at the moment is that its taken over my entire work bench and after shaping I walk out of the workshop looking like I just walked through a blizzard .
SteveW working with snow shoes on
This method is not new but with foam it is, the slab and formers method was used in the dark ages of control line models and maybe before that, but this brings it right up to date.
Is the foam EPP, high density or beer cooler

nut
rcairnut is offline Find More Posts by rcairnut
Reply With Quote
Old Feb 16, 2009, 02:39 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
Its actually HD EPS similar to blue foam consistancy but not quite as dense, its really only there to hold a shape the monocoupe contruction is really the key to locking it all together as a solid unit.
SteveW who came from those dark ages of which you speak
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Old Feb 16, 2009, 02:55 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
22,650 Posts
hmmmm now there's a thought I'm sanding it round
SteveW
steve wenban is online now Find More Posts by steve wenban
RCG Plus Member
Latest blog entry: done
Reply With Quote
Reply


Thread Tools