Seeking Info on Delta Wing RC Glider

[GARY BLANDFORD-HULL]

Hi, hope someone can help identify this delta wing glider.

 

The model is about 30 years or so old and I acquired it from a deceased friends estate about 20 years or so ago.

 

The wing span of the model is approx 144 cms and measures nose to tail at 62cms.

 

It has elevon servo setup, via two linked servos.

 

I would love to know where the C of G should be, and what the original design weight would have been.

 

I am hoping to get it ready for flying by the autumn as I recall this model flies best in strong winds.

 

I hope the pictures attached will assist in identifying the model?

 

Many thanks for any help,

 

Gary

[ken anderson.]

Phoenix models I think....Google Stan Yeo...wingbat?

 

Ken Anderson...ne ..1...Delta dept.

[GARY BLANDFORD-HULL]

Thanks for the reply, but I should have mentioned that the model I have has a foam core wing with balsa wood sheeting over.

 

I think the Stan Yeo wingbat is a conventional balsa wing built up and covered?

 

Thanks anyway,

 

Gary

[ken anderson.]

hello Gary,here it is anyway....

 

ken anderson...ne..1..wingbat dept.

[MattyB]

It is definitely a Wingbat, but there were a few variants over the years - if I was betting I’d say it’s a Wingbat+, they were definitely foam winged. They fly ok, but it’s a little way off the performance of a more modern plank flying wings (Halfpipe 60, Skua, Gulp etc) that took a real leap forward in the days of EPP60 racing.

 

Ps - It’s not a delta, it’s a (near parallel) swept plank; aerodynamically they are quite different, though by his own admission Stan’s sections were sometimes rather “TLAR” in nature… 

 

Edited April 16, 2022 by MattyB

[Wookman]

No need for betting. This is a Wingbat plus, no doubt about it. They fly really well and it will be well worth the effort to refurbish. Good in light to moderate conditions.

There is a pdf of the plan on phoenixmp.com in the Stan's mk1 plans folder that will give you the c of g.

Whilst some of Stan's sections were not very scientifically derived the Wingbat series was an exception. It uses a specialised flying wing section with reflex. It produces a stable but manouverable aeroplane with good speed range. A cracking aeroplane. 

Edited April 17, 2022 by Wookman

[Wookman]

My Little Wingbat originally flew with a dubro mixer on the "aileron" servo. I retained the tandem servos but now use tx mixing with one servo hooked up to each elevon.

The Little Wingbat has flown really well in 60mph at Aggy in Cornwall and more recently in 50mph on Mickey's at the Bwlch. I would suggest that 30 to 35mph would be about the upper limit for the Big 'bat.

[Wookman]

[GARY BLANDFORD-HULL]

Many thanks everyone for the info and confirmation of the model type.

 

Very much appreciated.

 

Gary