Hello Everybody,
My name is Martin, and and I am based in Auckland, New Zealand.
I am self-confessed 'slope trash' in that I fly gliders almost exclusively (the exclusion being a HK Spitfire Mk. 24), and slope gliders in exclusion to almost everything else.
In Auckland we are very lucky in that a big chain of arts and crafts stores known as Geoff's (or John's, depending on who owns them) Emporium sell Adams Dollar Tree Foam Board at $5 per sheet. While not US$1, its still not going to break the bank purchase wise. The sheets are available white and other colours too.
I am getting to grips with building out of foamboard, and have been enjoying the Versa Wing as an incredibly manoeuvrable slope soarer.
For a forthcoming project, I have found my old plans of the SIG Riser 2M sailplane. I am of course scheming to buy balsa, ply etc to build a new one off plans, unless I decide to buy a Spirit 2M kit, or perhaps the Gentle Lady kit at the local hobby store. Nevertheless, some cursory work with the plan overlaying with foamboard allowed me to see that the fuse is very nearly 30" long, and the wing panels are 20" wide.....
So, requesting your expertise, I'd like feedback on the following questions - please feel free to give me all your thoughts and experience.
Project - A Foamboard SIG Riser - Lets call it the FT SIG Riser Replicant (or something)
Concept :
User FB to build the thing - total cost = 3.5 FB sheets.
Electronic : 2 x 9g, but there will be room inside for 2 x full sized ones, a 4 x AA NiCd/NiMH 1100-2400mAh.
Control : 2 FT-style control horns, on Rudder & Elevator; I am using 2 x Dubro 1/2A horns, as at $3 thats pretty good. Control runs will be as the FT Simple Soarer, with 1mm piano wire, z-bend at the servo, and with Dubro E-Z Links / Control Stoppers at the horn side. A generous 2cm of wire beyond the easy link to allow good adjustment.
Design:
The wing panels will be 4 x 20" segments, with Armin Wing construction, as this give a full aerofoil. The rest of the bird will be FT-style swappable. The Nose cone will be removable, with the option for putting in a FT-swappable power pod (which I do not believe in, but anyway).
Construction :
FT Style / Armin-Wing Style, with tape covering. Upper surfaces while, lower surfaces alternating red/blue tape. Nose doublers of 3mm Correx/Corflute/Twinwall, for strength. Ditto fuse underside, external to foam - makes the bird tougher. I am also considering a totally corflute fuse as well, research already begun. This would give tough light fuse, big smooth light wing.
BIG QUESTION:
The Armin Wing lends itself to multi-part construction, but so does the FT wing as per the simple soarer. I also really love the undercambered wing of the Flyboys Ridge Runner.
So : Can any of these wings be built multi-part with confidence in terms of good strength ?
Notes : This is a light-wind slope glider design, an emulation of the original SIG Riser. It will not be engaged in High-G flying - if anything, its a relaxed glider for flying on calmish days, and for catching thermals. It could be high started, using the FT-hook and/or a glider tow release. Its going to be a pure glider, as that is what I like.
Given all of these, looking forward to hearing from everyone - I treasure your thoughts.
Martin - Auckland Slope Trash.
My name is Martin, and and I am based in Auckland, New Zealand.
I am self-confessed 'slope trash' in that I fly gliders almost exclusively (the exclusion being a HK Spitfire Mk. 24), and slope gliders in exclusion to almost everything else.
In Auckland we are very lucky in that a big chain of arts and crafts stores known as Geoff's (or John's, depending on who owns them) Emporium sell Adams Dollar Tree Foam Board at $5 per sheet. While not US$1, its still not going to break the bank purchase wise. The sheets are available white and other colours too.
I am getting to grips with building out of foamboard, and have been enjoying the Versa Wing as an incredibly manoeuvrable slope soarer.
For a forthcoming project, I have found my old plans of the SIG Riser 2M sailplane. I am of course scheming to buy balsa, ply etc to build a new one off plans, unless I decide to buy a Spirit 2M kit, or perhaps the Gentle Lady kit at the local hobby store. Nevertheless, some cursory work with the plan overlaying with foamboard allowed me to see that the fuse is very nearly 30" long, and the wing panels are 20" wide.....
So, requesting your expertise, I'd like feedback on the following questions - please feel free to give me all your thoughts and experience.
Project - A Foamboard SIG Riser - Lets call it the FT SIG Riser Replicant (or something)
Concept :
User FB to build the thing - total cost = 3.5 FB sheets.
Electronic : 2 x 9g, but there will be room inside for 2 x full sized ones, a 4 x AA NiCd/NiMH 1100-2400mAh.
Control : 2 FT-style control horns, on Rudder & Elevator; I am using 2 x Dubro 1/2A horns, as at $3 thats pretty good. Control runs will be as the FT Simple Soarer, with 1mm piano wire, z-bend at the servo, and with Dubro E-Z Links / Control Stoppers at the horn side. A generous 2cm of wire beyond the easy link to allow good adjustment.
Design:
The wing panels will be 4 x 20" segments, with Armin Wing construction, as this give a full aerofoil. The rest of the bird will be FT-style swappable. The Nose cone will be removable, with the option for putting in a FT-swappable power pod (which I do not believe in, but anyway).
Construction :
FT Style / Armin-Wing Style, with tape covering. Upper surfaces while, lower surfaces alternating red/blue tape. Nose doublers of 3mm Correx/Corflute/Twinwall, for strength. Ditto fuse underside, external to foam - makes the bird tougher. I am also considering a totally corflute fuse as well, research already begun. This would give tough light fuse, big smooth light wing.
BIG QUESTION:
The Armin Wing lends itself to multi-part construction, but so does the FT wing as per the simple soarer. I also really love the undercambered wing of the Flyboys Ridge Runner.
So : Can any of these wings be built multi-part with confidence in terms of good strength ?
Notes : This is a light-wind slope glider design, an emulation of the original SIG Riser. It will not be engaged in High-G flying - if anything, its a relaxed glider for flying on calmish days, and for catching thermals. It could be high started, using the FT-hook and/or a glider tow release. Its going to be a pure glider, as that is what I like.
Given all of these, looking forward to hearing from everyone - I treasure your thoughts.
Martin - Auckland Slope Trash.