"The little friend" (the Titan ZG 23SL) has a very potent update in this new Titan ZG 26SC. This is the ideal engine for the middle size 3D FunFlyers and for the not so large models.
The Titan ZG 26SC. is the result of constant development over the years. Only the front bearings, exhaust gasket and several screws are the same as the Titan ZG 22.
The new cylinder is the most prominent change in the outward appearance of the Titan ZG 26SC. It is not only optically perfect but the power this cylinder produces will meet the stringent demands of most 3D FunFlyers. The piston is fitted with a thin high performance single ring which considerably reduces surface friction with the cylinder. In addition to more power, this piston rings low drag, allows a lower reliable tickover speed.
The new Walbro pump carburettor with choke, simplifies the fitting of the intake bend #2587, allowing the air to be sucked out of the fuselage, and thereby silencing the intake noise. The choke eases starting and avoids the stink of petrol on the respective digit. The bellmouth intake tube is supplied with the engine.
The perfected crankcase of the Titan ZG 23SL has been adapted to the new cylinder. The outside measurements are not altered. It is not strictly necessary to use the supplied aluminium motor mount, instead the engine can be bolted directly onto a hard firewall.
The double counter balanced crankshaft constructed to take the extra power is suspended in three ball bearings, the cold forged con rod is fitted with needle bearing rollers both ends.
The two ignition modules and the flywheel are industrially designed and produced components, developed especially for Zenoah model aircraft engines. Compared to battery ignition systems this magneto ignition is very tough and able to absorb quite an amount of abuse.
The power coil over the flywheel also contains the electronic components that set the timing, the ignition coil is the second module. The high tension is 30,000 volts. This very high voltage is build up in a very short space of time so that even with a wet spark plug, the engine will fire. The magneto ignition, in spite of the flywheel, is hardly any heavier than a battery ignition with a reasonable sized battery.
For small glider tugs such as the "Big Lift" the Titan ZG 26SC is ideal. It uses a litre fuel for about an hour's towing. The fuel can be bought cheaply at the petrol station even on Sundays.
Best two-stroke mix is lead free normal grade petrol and Bel Ray MC H1R at a ratio of 1:50. You need neither starter nor battery. Due to the built-in pump you can place the tank where you wish. Unlike with Methanol fuels corrosion is no problem at all.
Fitting a tuned pipe to the Titan ZG 26SC will considerably increase the performance. The Seyer Tuned Pipe #2592 is ideal. Alternatively you can fit the Stainless Steel silencer #2576 or #2577 and use the tuned length of the header to increase power.
The Titan ZG 26SC turns a Menz S 18x8" propeller at 7,400 rpm with the standard silencer fitted. This is a good 200-rpm more than the ZG 23SL with the smaller 18x6" propeller. Fit a tuned pipe and the Menz S 18x8" will turn at 8,500 rpm!
