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Sparky
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| Posted: February/08/2020 at 10:21pm |
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Klaus,
Great workmanship! I have never seen a Mossie survive an engine out in flight! Keep them both running and if one quits pull the power on the running engine and land.
even if its off field.
Your landing gear is very nice!!!
Did you fiberglass the tail? or some other method. I like the idea of a plywood tail wheel. I might try that on my Hornet or maybe 3-d print wheel and tire!
Sparky
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Scale-Klaus
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| Posted: February/09/2020 at 5:38am |
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Sparky, the tail is made from foam (Styrodur), i.e., formed by cnc milling. So, this stuff is very light to save additional weight in the nose. Concerning the tail wheel, I have to correct myself. I wanted to say that the tail skid is made at least 90% from ply. So, its weight could be decreased by 50% in comparison to aluminium. Finally, with silver paint it looks like metal. Regards Klaus
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Bronco1
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| Posted: February/09/2020 at 7:10am |
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Cheers,
Kevin
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Cheers,
Kevin
Building: Bates 96.25 inch Fokker D.XXI, Top Flite P-47 RTC
Designing & Building: 136" Arado AR-240, 120" Mitsubishi C5M1
Designing: 139" Hs-129b
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Richard Crapp
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Richard Crapp
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Joined: October/30/2004
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| Posted: February/09/2020 at 8:40am |
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Quote: Sparky Klaus,
Great workmanship! I have never seen a Mossie survive an engine out in flight! Keep them both running and if one quits pull the power on the running engine and land.
even if its off field.
Your landing gear is very nice!!!
Did you fiberglass the tail? or some other method. I like the idea of a plywood tail wheel. I might try that on my Hornet or maybe 3-d print wheel and tire!
Sparky
I had a Mossie about 30 years ago. 2 x OS 90's , A Jim Davis kit! One engine stooped and it was in quick as lightning. Always the problem with high powered twins.
Richard also built a Hornet with 2 Zenoha 45. It was rather slower than my Ziroli Black Widow that had 38's
A lot of my friends including me make tail wheels and main wheels, from hard foam sponge that can be turned on a drill or lath then clamped between plates of ply. (Stampe thread)
This is Richard Rawle's latest Mosquito. It is 30% . Power is 2 x Valech 120cc fc.
About 5 mt span.
He has been building it 10 years, (with distractions) but it is nearly finished
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Sparky
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| Posted: February/09/2020 at 12:53pm |
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Richard this got me thinking, I could get the tailwheel and hub all 3D printed in black plastic so even it it wears it will still be black.
Almost all my flying is on grass so it really shouldn't wear too much. It sounds like you mean the tailwheel wire is music wire wrapped in Ply to represent the aluminum fork?
My Hornet is 80" and i will use a Plastic robart retractable tailwheel for my gear.
I expect the allup weight to be around20# with electric motors.
I'm not familiar with styrodur does that need to be glassed and does it require extra reinforcement?
My elevator and rudder are foam cores sheeted with 1/16 balsa and glass.
Sparky
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Brown County, Indiana
TopRC FW-190, Zenoah GT-80
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Scale-Klaus
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| Posted: February/09/2020 at 1:41pm |
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It is not music wire wrapped in ply. The fork is really made from ply in all. It works with the Mossie tail wheel because it is statically stable due to its design. The only metal parts are the connecting parts to the fuselage as well as the linkage. The tail made from styrodur is glassed, in order to obtain a permanent surface. It works with parts which are not integral or load-bearing parts. Actually, for forming parts it is an excellent material. Klaus
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Richard Crapp
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| Posted: February/09/2020 at 2:35pm |
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Quote: Sparky Richard this got me thinking, I could get the tailwheel and hub all 3D printed in black plastic so even it it wears it will still be black.
Almost all my flying is on grass so it really shouldn't wear too much. It sounds like you mean the tailwheel wire is music wire wrapped in Ply to represent the aluminum fork?
My Hornet is 80" and i will use a Plastic robart retractable tailwheel for my gear.
I expect the allup weight to be around20# with electric motors.
I'm not familiar with styrodur does that need to be glassed and does it require extra reinforcement?
My elevator and rudder are foam cores sheeted with 1/16 balsa and glass.
Sparky
You probably can't do much better than a plastic Robart retract set. I have not made a tail retract set for a long time , I think I had one in my Mossie all those years ago.... The tyres can be good for a saving, some commercial ones are horrendous.
This bit in my Stampe thread , next 3 pages
The shaft and steering is Carbon but of coarse it dose not retract
3 D might work with about 1 % fill. I believe you can get some soft filament stuff.
PS, What is styrodur, Styrofoam?
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Scale-Klaus
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| Posted: February/09/2020 at 3:07pm |
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Hi Richard, styrodur is some kind of foam which has a higher density than Styrofoam. It is a bit heavier, but it can be milled and/or even processed with a cutting wire. I´m not sure if styrodur is simply a trade name. Usually, it should be available in building centres. Cheers Klaus 
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