Can anyone ID this glider?

[Oian]

I won this glider (including radio and high-start) at a SAM contest raffle.
The span is 106", both the wing and stab use a balsa D-box. Both wing and stab have vee dihedral. The wing has an under-cambered airfoil. The construction and covering seems to be well done. There are two wing joiners .196"(5mm?), .156"(4mm?). I replaced the AM receiver with an FM and put in a new battery. After a few hand glides it seems that the CG is pretty close.

Anyone have an idea of the name of the model? Vintage? any other info would be helpful (strengths, weaknesses, Flying characteristics?)

Thanks, John

[Larry Jolly]

Just a guess but it looks like a Kyosho Cirrus 3000 circa 1977. LJ

[Mark Miller]

I would agree with LJ.

Mark

[vintagesailplnr]

I won this glider (including radio and high-start) at a SAM contest raffle.
The span is 106", both the wing and stab use a balsa D-box. Both wing and stab have vee dihedral. The wing has an under-cambered airfoil. The construction and covering seems to be well done. There are two wing joiners .196"(5mm?), .156"(4mm?). I replaced the AM receiver with an FM and put in a new battery. After a few hand glides it seems that the CG is pretty close.

Anyone have an idea of the name of the model? Vintage? any other info would be helpful (strengths, weaknesses, Flying characteristics?)

Thanks, John

Sorry, "to the above posters" on the Cirrus - it is a Cirrus fuse but I think it is the Cummulus (Graumpner kit) - the Cirrus had a double taper TE wing and no dihedral in stabs. Supposedly, the Cu was a slope ship. The WS and rudder shape is incorrect for the Cirrus as well.

[kzimmerm]

Sorry, "to the above posters" on the Cirrus - it is a Cirrus fuse but I think it is the Cummulus (Graumpner kit) - the Cirrus had a double taper TE wing and no dihedral in stabs. Supposedly, the Cu was a slope ship. The WS and rudder shape is incorrect for the Cirrus as well.


This is a tough call. I found this link:

http://www.skybench.com/nostalgia/images/cumulus1.jpg

Now the canopy is different... The fuse looks to be close... so does the wing. Stab dihedral might have been someones personal mod.



Kurt

[Larry Jolly]

I see Ribs in the wing,definitely not a Cumulus 2800. LJ

[Oian]

Thanks for the help, here are a couple more pictures. It may very well be a combination of unrelated parts.

The fuselage is molded fiberglass (not ABS like the Cirrus) but where the wing mounts, there are no molded in fillets, the flat end of the wing just goes up against the rounded fuselage side (the fit is a lot worse than it looks in the picture, about 1/2" wide at the middle of the wing on top)!

The wing is under-cambered (It looks like the Cirrus had a flat bottom wing?) with a straight taper on both the LE and TE. and the construction is definitely balsa D-box with ribs.

The rear of the fuselage is different from the Cirrus (see kit photo, from Skybench on the web, if I actually had the kit I would have a lot fewer questions!) with a rise to the front of the rudder and an odd box shape where the stab is mounted (kind of like the Cumulus fuselage looks on the model box (reply 4 link), and if you look at the cockpit area of the bare fuselage (without the canopy and the deck area in front it looks similar). Could it be that with the Cumulus the stab mounted on top of the box and a servo would have been mounted inside? Its kind of difficult to tell from the box photo. Was the Cumulus fuselage fiberglass?

Any more thoughts? Thanks, John

Larry: I have one of the kits for your Meteor that I got at one of the Fresno contests several years ago, will build it one of these days, but I think the nose will need a little rounding off to meet today's "safety" rule. Just a quick Meteor question: To fly with a winch, is the spar used in the kit OK, or would some carbon fiber be in order? Thanks

[Larry Jolly]

Never had a problem with the spar in the Meteor. But, I advise learning to pulse with any of the earlier designs. The aircraft is not a Graupner Cirrus, but could infact be a Kyosho Cirrus 3000. LJ

[jjscott]

I've got an unbuilt Kyosho Cirrus 3000. It looks like an exact clone or near clone of the Graupner Cirrus, complete with ABS fuse and flat bottom wing. So, it has to be something else.

Jim

[Mark Miller]

I have had both the Graupner and Kyosho Cirrus (still have a few Graupners left) and after seeing the more detailed photos it is not either. They were both very very similar with only a few details being different. I remember the Kyosho joiners were different sizes when I was scrounging for some lost ones on the Graupner. I'm stumped.

Mark Miller