Senior Telemaster (oz9275)


Senior Telemaster (oz9275) by Karl-Heinz Denzin 1970 - plan thumbnail

About this Plan

Senior Telemaster. Radio control sport model. Wingspan 2400mm.

This is the original German version of the Senior Telemaster design from Alexander Engel KG circa 1970, complete with barn-door ailerons. For the later 1975 version with strip ailerons see RCM Senior Telemaster (oz5044).

Later kitted by Hobby Lobby.

Quote: "Senior Telemaster has been developed especially for the fans of big model airplanes, and due to its high inherent stability and docile flight characteristics it facilitates proceeding directly from free-flight sport models to multi R/C flying. All controls and the throttle are provided for actuation. If for some reason the ailerons are not used, the dihedral should be increased from 65 to 130 mm (2-9/16 to 5-1/8 inches) to provide sufficient lateral stability.

Due to its high-lift wing airfoil, the Senior Telemaster is very well suited for special tasks like banner tow, leaflet and parachute dropping, aerial photography, etc., but it is suited for rather simple aerobatic patterns.

Building the Fuselage: Cut sheet 1 of the plan along the dashed line and glue the parts together so you have the complete fuselage views in one piece.

Now drill through the engine bearer bars 9 and glue a M3 (metric thread, about 1/8” diameter) nut under each drilled hole using epoxy. Drill the holes in the formers 12, 14, and 20, which are lead-throughs for the fuel tube, the throttle Bowden cable, and the tail wheel mount, and in former 14 make the cut-out for the tank.

Now assemble formers 15 to 20 and bind and glue the tail wheel mount to the back of former 20.

Assemble both fuselage sides from parts 1 to 6, and bevel the endings according to the top view drawing. Now drill the holes for the mounting dowels. Tack the right fuselage side flat upon the building board and glue on parts 7 to 15. Add parts 7, 9, 11, and 13 of the left fuselage side, insert the tank compartment cap 21 and glue on the left fuselage side.

Subsequently, raise the end of the right fuselage side by 52 mm (2.05”) and in this position, glue the ends of both fuselage halves together. Insert formers 16 to 20 and glue on the nine fuselage bottom pieces 22 and the landing gear rest 23.

When the glue has well settled, the fuselage may be taken off the building board. After this, the upper cap bars 24, the former bracings 25, and the lower cap bars 26 are glued in. Now the landing gear parts 28, 29, and 30 are bound together using binding wire, and glued with epoxy or soldered. Install the main wheels 31 on the main landing gear. Now glue the tail wheel strut 32 into the tail wheel mount and install the tail wheel 33.

Following this, cut (saw) the engine bearer plate 34 appropriate to your engine and drill eight holes, of which the four inner ones have to fit the engine and the four outer ones have to fit the engine bearer bars 9.

Now the fuselage is carefully trimmed (fettled) and all edges, except the wing and tail saddles and the landing gear rest, are well rounded..."

Cleanup by rchopper56.

Added kit instructions translated into English (2011) thanks to Burkhard Erdlenbruch, found online at (also includes full bill of materials).

Direct submission to Outerzone.

Update 4/5/2024: Added kit review from Model Builder, May 1993, thanks to RFJ.

Supplementary file notes

Original kit instructions, 4 pages, in German.
English translation of kit instructions, 14 pages.


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Senior Telemaster (oz9275) by Karl-Heinz Denzin 1970 - model pic


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User comments

A great aero already many videos of this aero with brushcutter engine.
Fabricio Soares Ferreira - 21/10/2022
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Download File(s):
  • Senior Telemaster (oz9275)
  • Plan File Filesize: 734KB Filename: Senior_Telemaster_94in_oz9275.pdf
  • Supplement Filesize: 2293KB Filename: Senior_Telemaster_94in_oz9275_artf_review_MB.pdf
  • Supplement Filesize: 1253KB Filename: Senior_Telemaster_94in_oz9275_instructions.pdf
  • Supplement Filesize: 1171KB Filename: Senior_Telemaster_94in_oz9275_instructions_eng.pdf
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