Super Duper Zilch (oz6634)
About this Plan
Super Duper Zilch. Control line stunt model. Wingspan 52 in, chord 12 in, wing area 624 sq in. For Super Cyclone power.
The 1947 Super Zilch (oz265) was the first Zilch. This here is a later version.
According to the AMA biography: "In 1949, Saftig redesigned the Super Zilch, increasing the wing area and simplifying construction, created the Super Duper Zilch, which Berkeley also kitted."
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(oz6634)
Super Duper Zilch
by Jim Saftig
from Berkeley
1949
52in span
IC C/L Kit
clean :)
formers unchecked
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Found online 11/05/2015 at:
http://www.modelresearchlabs.com/plans/
Filesize: 709KB
Format: • PDFbitmap
Credit*: modelresearchlabs.com
Downloads: 1629
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User comments
This Super Duper Zilch [main pic, 006, 007] came to me via the Oily Hand network. It is nicely built exactly as per the plan except the canopy is from balsa and painted. The cowl is as per and from !/8” ply as specified. Powered by a Fox 29 running a 9.5 x 6 prop, it is sprightly. In spite of the huge elevators it flies very smoothly on 60 foot lines. It does all the stunts I can manage no worries. The balance point is well forward of that shown on the plan. I shall gradually move it back to see how the model responds.If you have wondered about building this classic - do so. You will not be disappointed.
zotoz - 15/06/2026
I just had another look over and measured the Super Duper Zilch and is actually 80% of full size at 42” span, making it a bit less super and duper.
zotoz - 15/06/2026
We have a mystery here. I measured the PDF plan and it measures 26.4" from center line to tip, only half of the wing shown. This comes pretty close to 52". Berkeley didn't list the wingspan, but did show wing area of 625". That works out to 12x52 = 624. But the PDF measures wing chord at 12.3", which means the scan might be a little large, not really enough to matter. More confusion, the directions say you're looking at the BOTTOM of the LEFT wing, why I don't know. We don't know what the right wing is supposed to be, since it's already furnished in the kit and notched for the ribs. Maybe it was shorter than the left wing, not unusual to balance out the lines. There are several other Zilch plans, all different, just build it like you want, it'll still be a Zilch.
Doug Smith - 15/06/2026
The equal or different wings length design depend on clock or anticlockwise flight. And the efficiency depends on engine rotation direction too. see the article an count the ribs on the pictured model. Could be of interesting adding this article on the plan page. https://library.modelaviation.com/article/super-duper-zilch
pit - 15/06/2026
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- Super Duper Zilch (oz6634)
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Notes
* Credit field
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