Topsy (oz680)

 

Topsy (oz680) by Horst Diemer from Graupner 1961 - plan thumbnail

About this Plan

Topsy. Single channel RC trainer.

Quote: "Topsy is designed as a sports and radio control model for engines of about 0.5cc displacement. The small size can produce substantial benefits; handiness, easy transportation, low stresses on hard landings and simple construction. The flight characteristics of Topsy are good and the payload (radio control) can be up to the weight of the model itself. On the plan, the installation of the MIKROKOMBI single-channel receiver unit is shown. The items required for installation are shown on the separate parts list..."

Update 13/10/15: Added sheet 2 of plan, plus English translation, thanks to Colonel Blink.

Supplementary file notes

Sheet 2 of plan, plus English translation.

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Topsy (oz680) by Horst Diemer from Graupner 1961 - model pic

Datafile:

Topsy (oz680) by Horst Diemer from Graupner 1961 - pic 003.jpg
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Topsy (oz680) by Horst Diemer from Graupner 1961 - pic 004.jpg
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User comments

Hi Steve, I buld the TOPSY from Graupner [see more pics 003,004], with the plan of your site. Weight is 270 gram ready to fly. Thanks for you plan on the OUTERZONE site. Greets ; My site http://users.skynet.be/fa046192/
Julien - 25/01/2014
Good morning Steve/Mary. Was home on R and R over the weekend so Lindsay was able to take photos of my three latest builds from plans taken from your awesome site. Many thanks for all time and effort you guys put in, it's exemplary. Please see attached Graupner Topsy, a free flight model I built in the early '70s which flew away [more pics 005-012]. It was found two weeks later up a tree by locals collecting fire wood some distance from the airfield.
AndyCoutts - 08/10/2016
Dear Steve! Just wanted to share my Graupner Topsy built from the plan on your site [more pics 013]. Had not built a balsa plane for decades and the experience was good fun. I used paper tissue and dope for covering and tried to keep the original colour scheme. It is electric powered and even has FPV equipment on board (woo-hoo!), still struggling to get the COG correct. Thank you very much for your great site! Have a nice day,
Cyburgs - 24/10/2016
Hi Mary/Steve, here are a few photos of the Graupner Topsy [more pics 014-017]. This was built a few years ago, starting off as diesel free flight but now converted to electric rc. We've only just test flown it and made a video too, doing ROG on the beach: www.youtube.com/watch
Anon - 25/07/2017
Hello, here are a few photos of my Topsy, finished a few days ago. Built according to plan from your side "Topsy (oz680)". Your site is the best, thank you!
Manfred - 03/09/2019
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Scaling

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