CB 12 (oz4870)


CB 12 (oz4870) - plan thumbnail

About this Plan

C.B.12. Towline glider. French language plan.

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  • (oz4870)
    CB 12
    from Chalange et Bonnet
    72in span
    Scale Glider F/F Kit
    clean :)
    all formers complete :)
  • Submitted: 27/09/2013
    Filesize: 571KB
    Format: • PDFbitmap
    Credit*: hawkeye

  • DFS_Weihe | help
    see Wikipedia | search Outerzone

    ScaleType: This (oz4870) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

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User comments

Hello, Looking at the plan of the cb 12, I realized that it is the exact replica of the Weihe glider. Here is the link to the construction site...larger...of a Weihe glider: http://mplaneur.free.fr/weihe.html
Olivier - 21/05/2022
Ah, good point. Ok, have tagged this now as ScaleType=DFS_Weihe. It's interesting that all the photos of the fullsize Weihe show a straight wing, but this model has a gull-wing layout. I wonder why?
SteveWMD - 21/05/2022
Two reasons :
" Unlike the "gullwing" wings of the Reiher from which it was developed, it has an airfoil right for construction cost reasons."
"- Plan CB 12: The Challenge house and Bonnet edited, between the end of the war and 1965 a number of model plans."
Accuracy conforms to what was done at the time, that is to say fairly approximate, but large lines were present and these different plans have initiated many young modelers to the joys of the model as exact as possible."
File Christian Ravel GPPA
Olivier - 21/05/2022
What? Please explain. Neither of these things are (as best I can tell) reasons to add a gullwing.
SteveWMD - 21/05/2022
The plan shows 750mm dihedral at tip with the gull wing layout BUT the writing top right mentions Weihe scale 1/10 straight wing with 5cm dihedral.
Perhaps the scale build is meant to be straight with 5cm dihedral. However if building for free flight then the idea is to use gull wing with extra dihedral for stability.
M Hodgson - 22/05/2022
I also think CB adapted it for flight. Normally, the Weihe should not have a right wing. The right wing is for the cost. It was therefore necessary to strengthen the emplanture of the wings. Perhaps simpler with a seagull wing?
Olivier - 22/05/2022
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