In this version, the rear windows are equipped with an M16x1 fine thread. In addition, spacer bolts with a diameter of 16mm and a length of 50mm are included in the set. The threads can be screwed together up to about 15mm. A groove in the bolt at about 7mm marks the minimum screw-in depth so that the best possible power transmission takes place. The bolt should be shortened to coarse length with a hacksaw before installation. With this engine mount it is very easy to adjust the exact distance between bonnet and spinner. The sidecut and engine camber can also be corrected to a small degree. After exact adjustment, the threads of the spacer bolt should be glued well with the screw lock. With this version it is possible for every model maker to adjust his motor steplessly from the head frame to the rear edge of the motor up to about 60mm distance. It is not necessary to have access to metalworking machines, as the bolts have a groove at intervals that exactly fits a hacksaw, so that the bolts can be cut to coarse lengths without destroying the thread. Furthermore, the bolts have a spherical recess on the end face in which a spherical washer is inserted. This prevents bracing on all sides when adjusting the motor lintel and motor pull up to about 3°. The bolts are then always flush against the head bulkhead.
The engine mount is designed for single cylinder and boxer engines from 30 to 170ccm. It is constructed in such a way that the engine mount is bolted in 4 rubber parts to the head bulkhead with M5 screws. The brass spacers must be adjusted to maintain the damping properties of the rubber. The rubbers are compressed about 0,2-0,3mm, and not like with the use of D-Loks that the rubber is compressed which hardly takes place a vibration absorption. The holder consists of turned cover and base plates, in each of which a spacer sleeve is inserted exactly into a recess, thus making the spacer sleeve and cover plates into one unit. The difference to the old design is that the rubber elements do not sit completely in the bore of the engine mount, but are inserted into the bore by nubs on the rubbers with slight pretension. This results in an optimum absorption of vibrations in the direction of rotation of the crankshaft at the narrowest point between the engine mount and the fuselage and not, as with the use of D-locomotives, where the rubber is squeezed at exactly this point. The holder weighs about 100 grams and is therefore only about 40g heavier than when D-locomotives are used. The only difference in the mounting of the new version is that the holes in the motor mount are 16mm instead of 14mm. Thus all engine mounts of the old version can be retrofitted with new rubber elements (retrofit kit available for 15€) The aluminium parts have a diameter of 32mm The elements build up about 7mm from the head frame to the rear edge of the engine bulkhead. The advantage of this mount is: -prevents dangerous vibration peaks, -dampens noise, -the engine can be controlled much further in the idle gas than when using a hydromount (no shaking), resulting in a lower landing speed, -no maintenance, -no rubber departure possible, thus significantly safer. If installed correctly, it is also not possible to shake up the model, as with the use of rubber vibration elements. The vibration absorption can be adapted to the model by the length of the spacers. The spacers are designed for motor bulkheads from 6 to 8mm. Smaller motors can also be screwed on directly, and the rubbers can be inserted in the head bulkhead. Tests have shown that the use of such a mounting approximately doubles the service life of the aileron servo gears compared to a fixed installation of the motor. Exact installation instructions are enclosed. In RC-Network there is a test report: Every model pilot should always install the highest level of safety in his expensive models to protect his model, himself and others from damage. This product contributes to this to a high degree.
Who still has doubts should consider what a servo gearbox costs!!!
