Thread Tools
Dec 31, 2015, 06:19 AM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Discussion

Uf-sb fsw


By request (Fossil) , here’s the plans for the UF-SB , a great flying Forward swept wing flier ... Presented here since FoamFly has chosen to close without notification ...
Apologies for the plan format , it was what we had in the old days ...

Just print it out and tape together and Bob’s your ...
Sign up now
to remove ads between posts
Dec 31, 2015, 06:56 AM
Retired CAD guy
birdofplay's Avatar
Hey GPW, are you sure that's all there is to this ?

I thought I'd put the tiles back together in Paintshop but there seems to be something missing. IMHO
Not complaining about free stuff, mind you.

Certainly one "could" flesh in the fuse and guess at the rest.

Work to date below :-)

Happy New Year

Bob
Jan 01, 2016, 12:38 AM
Slopeosapien
jonesymj's Avatar
Hey gpw, you found the plans! I remember quizzing you on what that airplane was some time ago now... Glad you found them! Now I just have to find my unifuse templates... Thanks man!
Jan 01, 2016, 01:22 AM
serial scratchbuilder
Granted's Avatar
From the uni-fuse thread:
Jan 01, 2016, 06:18 AM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Well then , seems like those plans aren’t really a true indication of this plane .... The wing is too far back for the picture .. and actually the rear tip of the wing is in line with the most forward tip of the Fin... and the fuse is incomplete ... Apologies , it’s been a while since we build this.. I’ll have to update the plans ... but basically the wing shape and fin are accurate ... so that’s a start ... I’ll work on this , and try to get it up to date ...
Jan 01, 2016, 06:27 AM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Searching around , things are not so bad .... here’s the original thread , complete with accurate plans ... thankfully ... https://www.rcgroups.com/forums/show...fuselage+X+Bow
Jan 02, 2016, 02:44 PM
Learning to mod
Thanks gpw!

I'll make one, once I get some foam.
I have some ideas to try out.

What was the original wing span though? I'm scaling the plans for a hextronik 24g motor, so it doesn't matter.
Just that it's not mentioned anywhere. Around 33"?

Thanks again!
Jan 02, 2016, 07:04 PM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Probably around 36" ... that was 'the usual" for me back then ...
Jan 03, 2016, 09:52 AM
Retired CAD guy
birdofplay's Avatar
Probably over reaching here but I've taken GPWs drawings and Gene Bond's drawing
and attempted to combine them into an integrated drawing for the 2016 crowd.

I'm thinking that the elevons are a bit smallish for foam construction.
I may either enlarge them or use balsa
Plus the wing position can be moved up/down to suit as well.

comments welcomed :-)

Bob
Jan 03, 2016, 11:44 AM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Birdo , Thanks !!! I’m thinking now just a profile body would do in a pinch ...maybe just doubled foam (~1/2” ) ... and about those elevons , they worked just fine .... too big would be too sensitive for this plane ... it’s NOT a 3D plane by any means .. the under cambered airfoil made it a floater rather than a racer... Those inclined to try a KF airfoil should certainly do so ...
Jan 04, 2016, 03:54 PM
Retired CAD guy
birdofplay's Avatar
Thanks. If you want the CAD file for your use/records/whatever just ask.

I like to put stuff INSIDE just for better looks.
Gene's Fuse was profile but I went with the original, jist B cuz ! :-)
Jan 04, 2016, 04:55 PM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
Speaking of , The original was an idea i gave to Dan for an interlocking fuselage , that he produced and sold ... but now that source has dried up ... and they are a bit fiddly to cut out by hand... the whole point was it just snapped together and the only bulkhead needed was the firewall .. They were quite strong and we made several Fun designs with that one body ... Incidentally that was the exact profile for the Parkflyer Pete , my all time favorite Foamie !!! Wish i knew someone who could make a few...
Jan 04, 2016, 07:50 PM
Retired CAD guy
birdofplay's Avatar
you gimme da drawings and I'll make as many as you can handle :-)

I can't believe I don't already have it ???

MPF, Depron, PinkFFF ( that's what we have locally ) ok maybe green Pactiv.

I give my brother Special Price, for YOU ! I Juggle the books :-)

bob@hoosiercutoutservice.com
Jan 05, 2016, 06:36 AM
gpw
gpw
“There’s no place like Foam”
gpw's Avatar
That sounds like a winner to me ...

Here’s a good drawing that was given to me ... in 3 different sizes ...
Jan 05, 2016, 07:18 AM
Retired CAD guy
birdofplay's Avatar
On inspection of the provided file my Initial findings are confusing. See Pix attached

OK , when I import a pdf , with vector in it, I usually get a scaling prompt but the default is 1;1

I took the default and then when checking the scale of the 3 sizes I found that the
Provided Rule at the bottom was NOT to scale at all ???

Then I checked the Slots to see if they had been adjusted and they were not.

So my conclusion is that whoever provided this drawing to you simply took the original
and scaled it to the 3 sizes shown, while disregarding the need to change BOTH
the accompanying SCALE and the Tabs and Slots sizes that have to respect the material thickness.

Sigh ...

I'll EDIT/change all them to DEPRON thickness ( .23622" or 6mm ) ,
if you want.
Then I will provide the corrections here.

I Need to be sure that the 3 ea current OVERALL sizes are correct first.

The Offer still stands and I am not complaining I just don't want to
work on something that is wrong and make a lot of scrap.

I'll be in the shop for an hour or so and check back on return.

Bob


Thread Tools