Blatter 40 (oz16604)

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Blatter 40 (oz16604) by Al Blatter - plan thumbnail

About this Plan

Blatter 40. Free flight indoor model for rubber power. Wingspan 16 in.

Vector format plan.

Quote: "Blatter 40. Designed by Al Blatter. Original drawing by JAM 1/73. Redrawn by Steve Wilson. CAD version by Paul Bradley 1/97."

Direct submission to Outerzone.

Note see also: http://www.parmodels.com/blatter-40.html

Quote: "In the early 70's Al Blatter, a member of the Detroit Cloudbusters, designed the Blatter 40 to help introduce modelers to the world of rubber powered indoor duration model airplanes. The design is simple like many of the early ROG (rise off ground) models but has proven to be a very good flier. The Blatter 40 was designed during the era of the North Pacific Sleek Streak models that used a nice plastic prop and prop hanger/thrust bearing. Al incorporated that then readily available front end in his design. Over time the Blatter 40 has been built by countless numbers of people wanting to try indoor Free Flight..."

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Blatter 40 (oz16604) by Al Blatter - model pic

Datafile:
  • (oz16604)
    Blatter 40
    by Al Blatter
    16in span
    Rubber F/F
    clean :)
    all formers complete :)
  • Submitted: 12/11/2025
    Filesize: 27KB
    Format: • PDFvector
    Credit*: theshadow
    Downloads: 151

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User comments

Doh. Have uploaded the missing planfile here now.
SteveWMD - 28/02/2026
A derivative of the plan the Bladder 40 is available from Volare’ products in the US as a short kit.
https://volare-products.myshopify.com/search?q=blatter
Thomas Solinski - 28/02/2026
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Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.

 

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