Sterling Spitfire plans

[John KruziK]

I have an old sterling spitfire kit, looks to be complete but no plans. Anybody have or no someone who has a set, or a copy. Thanks

[Dave_Trible]

I think I have a set however the kits plans aren't really full size building plans but rather a pictorial instruction sheet.   If you'd like those let me know.

Dave

A bit of advice as well.  Plan on replacing ALL the kit wood with the lightest wood you can get your hands on.   It CAN fly pretty well if you can keep the weight way down-say under 42-43 ounces.   If you try using the kit wood it will easily exceed 50 ounces and fly like a box of bricks.    I built one in the last few years and replaced SOME of the wood but not all.   I think it weighted around 48 ounces.   It took all the skill and and foot work I could muster to nurse it through a pattern.   The wing is pretty thin and mounted lower in the fuselage than makes for the best stunt but if you are ruthless.....

[Dave_Trible]

Got your pm John.

[M Spencer]

https://aerofred.com/details.php?image_id=91070

Your probably BETTER to just build a kookaburra Spitfire , and change it to bubble canopy , and if anyone complains , punch him in the nose . 



The Aeromodeler PENTLAND plan is THE SAME . But the Tempests not too differant . Theyve got modernish ( thick ) airfoils .
If you want a GOOD CLASSIC Eliptic design . But put a bigger spiner on the Tempest . Like this .

https://aerofred.com/details.php?image_id=95966&mode=search

only unmodern muck on these is tail plane size . knock it up to 20 or 25 % , and THERE ya GO .

[M Spencer]

Ayone know whodun thisone



Er Um o.k. .
thissisit .
 bin tryinto find it onna plans - aerofred , hip pocket - outerzone . maybe ?

[Dave_Trible]

Ayone know whodun thisone



Er Um o.k. .
thissisit .
 bin tryinto find it onna plans - aerofred , hip pocket - outerzone . maybe ?

Thats the Sterling plan.

Dave

[Dave_Trible]

https://aerofred.com/details.php?image_id=91070

Your probably BETTER to just build a kookaburra Spitfire , and change it to bubble canopy , and if anyone complains , punch him in the nose . 



The Aeromodeler PENTLAND plan is THE SAME . But the Tempests not too differant . Theyve got modernish ( thick ) airfoils .
If you want a GOOD CLASSIC Eliptic design . But put a bigger spiner on the Tempest . Like this .

https://aerofred.com/details.php?image_id=95966&mode=search

only unmodern muck on these is tail plane size . knock it up to 20 or 25 % , and THERE ya GO .

I have the Pentland plan and it definitely has a thicker/better wing and should fly better.   Still,  the really low mounted wing will yield some uneven turning on all three of these.   You can sort of trim a lot of it out with plenty of control handle bias.   If you were going to fly these in classic competition then there you are.   If you didn't intend to meet any rules then you could put in some scale-like dihedral and actually make the airplanes fly better in re,  the turns.    Here though you will likely create enough complexity in structure and controls that the weight shoots up again.   For it's beauty,  it's still a challenge to stay close to scale outline and make it a higher caliber stunt airplane. 

Dave

[M Spencer]

I think a Rabe rudder can do a lot to nip it in the bud . Rod from under outer elevator fwd . ( a line at 45 Deg. from hinge center hits it )
about straight , 1/8 out at the rudder T E on full up , about 1/2 in. on full down . Fiddle with the rudder horn for that , then throw it on .

No necesity to go to town on ' trimming ' . Kills the YAW  before it happens , so you dont get the ' secondary ' roll and shenanagins .

My blue Spit , with it near straight on neutral , a bit out on up , and definately out on full down , has killed its waywardness in hard corners .

[Dave_Trible]

Yaw is not the problem.   Equal turns inside and outside are......  a Rabe rudder can't do much about that.  That is working an entirely different axis.

Dave

[john e. holliday]

You forget that the Rabe airfoil helped a lot.  It was not full symetrical.