1116

Item 1116

DESIGN: SynchroLite ~ Power Train (for 1 engine) - Assembly - Layout - Belt Primary & 4 Gears - Idea (9)

Note that 1116 will not work because the gears interact with the tail boom.

Potential Problems or Required Modifications:

Gears and particularly the pinion shaft should be larger. Consider;

changing the teeth to 18/60, to accept larger shaft DONE

increasing the face width, for higher safety factor DONE

going to next higher tooth size; (plus the above?)

May still not be strong enough if engine and other rotor both want to drive one of the pinions.

The tubes surrounding the masts must be strong and firmly bolted to the transmission.

A thought ~ the 'lump' in the fuselage for the large sheave might be matched by a 'lump on the other side for the pivot and linkage for the collective lever.

Advantages:

Only 4 gears and 2 sheaves.

Drawing:

Power Train Components: Will eventually be moved to seperate pages,

Engine:

Engine - Gas - 2-stroke - Hirth 3-cylinder 3701

0001

80 hp de-rated to 67 hp.

100% RRPM = 4000 engine rpm

Alternative: May want to consider the Zanzottera MZ 301;

Sheaves:

For V-belts to have slippage for engagement clutch.

Power Train - Reduction - Primary - Belt Drive - Poly-V 0586

Engagement Clutch:

Movable flat face pulley running against the back of the belts, on the T-2 side, and increasing the wrap around the small sheave.

Overrunning Clutch:

Located in large sheave.

Reduction:

Primary (belt) 2.2:1

Secondary (gears) 3:1

Total reduction 6.6:1

Engine 4000 rpm

Rotors 606 rpm

Notes:

Rotational Shock: (torsional vibration)

Handled by masts and possibly V-belt.

Portability:

Perhaps the mast and seat back can roll forward and down about the gearbox's input shaft. The seat back would need a portion of its lower center cutout so as to not interfere with the spine. The engine might remain where it is. What is to be done with flight control rods.

or better yet ~ Remove the complete power train and rotors as one unit. This is very similar to the 2-engine SynchroLite. Knocked-down components will consist of; power train, blades, spine, tail, and 2 rear supports.

Last Revised: May 31, 2008