About this Plan
Topsy. Single channel RC trainer.
Update 13/10/15: Added sheet 2 of plan, plus English translation, thanks to Colonel Blink.
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. When installing radio control, it is advisable to reinforce former (8) by adding former (H).
Building Instructions: The construction of the model is carried out in part number order, on a flat building board. It is best to use a clean softwood board on which to pin the components. The assembly of the parts is carried out on the plan, which should be affixed to the building board. First, all the diecut parts of the kit are separated carefully with a balsa knife or razor blade, and the printed parts are cut out and sanded smooth.
The Fuselage: Part (1): the fuselage top piece is pinned to the building board. Formers (2) to (5) are glued in the appropriate slots at right angles. The front and rear fuselage sides are joined to make two parts (6) and these are then glued to the fuselage top and formers (2) to (5). The undercarriage (7) is firmly sewn to the former and the join covered with glue, then this assembly is firmly glued to the fuselage sides according to the plan. Glue the hull reinforcements (9) to the sides as shown on the plan. Part (10) is glued to part (11) and then these are affixed between the fuselage sides as shown. After that the 2 parts that make up the fuselage bottom (12) are added to the underside. After drying, the fuselage is lifted from the board and parts (13) to (22) added in accordance with the plan.
When using the MIKROKOMBI receiver unit as shown on the plan, the tail cone (20) and hook (C) must be made and remain removable. The fuselage is now treated several times with GLATTFIX (part no 207) sanding sealer and sanded down between coats to give a clean and smooth surface for later painting. Finally the cockpit is completed by adding the parts (23) and (24) which are cut to the sizes shown on the plan..."
Update 19/01/2020: Added decals zipfile, thanks to Patrick Urbain. These are in CDR format (Corel Draw).
Supplementary file notes
Sheet 2 of plan, plus English translation.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
by Horst Diemer
from Graupner (ref:4611)
IC R/C Cabin Trainer Kit
all formers complete :)
Found online 22/04/2011 at:
Format: • PDFbitmap
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsHi 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
Hi. I have a Topsy I built some ten years ago from plans featuring 4 channel radio and a Quickstart Merling converted with throttle carburetor, silencer and pressure fuel. I have pictures if of any interest.
Lars - 21/04/2020
Good afternoon, Sharing a few pictures of my last project, a Graupner Topsy [pics 024-026]. Thanks for the plan and for your great website. :-)
Best regards from Norway,
Hans Petter Stue - 26/09/2020
My Graupner Topsy with ailerons and AP .061 [pics 027,028].
DieterF - 17/10/2020
Hello Mary and Steve, here are some photos of my latest work. The Topsy model [pics 029, 030],
JL Foliguet - 09/04/2022
Add a comment
* 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.
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.
© Outerzone, 2011-2023.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.