1316

Item 1316

DESIGN: SynchroLite ~ Power Train (for 1 engine) - Assembly - Layout - Belt & 2 Gear Sets (10)

Picture:

Drawing:

Notes:

The overrunning clutch is inside the large pulley.

Could put a type of gear set between the two masts just above the proper gears, to assure that the gears will always intermesh. Better yet, just use stronger gears.

This arrangement is very similar to 1116; Power Train - 1 Engine - Assembly - Belt Primary & 4 Gears - Idea 9

The 3-cylinder engine is about 5" longer than the 2-cylinder. This will be locate the output shaft 2.5" further out to the side and this might be better for the alignment of the sheaves. Or, shift the 2-cylinder engine over +/- 2.5". 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.

Description:

xxx

ref: Engine:

Consider Hirth 3701 E; 3-cylinder inline; 939 cc; 80 HP @ 4500 rpm; fuel injected, water cooled; 125 Nm @ 4500; Weight = 99 lbs. The weight might include the gearbox. The low RPM means that the reduction can be less. http://www.recpower.com/3701.htm

Consider the Zanzarotta MZ301, 3-cylinder, 85HP @ 5800 rpm; Weight 110 lbs w/ un-required gear box. http://www.compactradialengines.com/mz301.html

Overrunning Clutch: These clutches maybe too light for the larger engine(s). Review & revise.

The overrunning clutch is to be located between the large pulley and the input shaft to the gearbox. The torque is 132 ft-lb and the shock loading, even though it is downstream from the belts, will be high. Power Train Access Form

	Consider 2 Warner CSK 35 (Item 0568), Max. torque 207 ft-lb. Sprag. C/w brgs, 0.66 lbs.
	Consider Warner CSK 40, (Item 0741) Max. torque 384 ft-lb. Sprag. C/w brgs?, 1.10 lbs. This weighs more but it means less material in adjoining items.
	Consider 2 Marland-RINGSPANN R206 (Item 0524), Max. torque 195 ft-lb. No brgs. Keyway
	Consider Marland-RINGSPANN R208 (Item 0141), Max. torque 450 ft-lb. No brgs. Keyway
	http://www.stieber.de/products/gfkgb.html
	Look into the other ones mentioned on the line below

For additional information see: SynchroLite ~ Power Train (for 2-engines) - Overrunning Clutch Overrunning Clutch:

Housing:

An upper casting will contain the bearings for the mast and the attachment lug to the fuselage. The lower portion may consist of two halves, which might be identical except LH & RH, The left hand one has a plug where the input shaft is on the right hand one and this allows for a future PTO.

Lubrication:

Splash from bottom center.

Mounting:

The gearbox will have a single central mounting point to the fuselage. It will be in the same casting that contains the mast bearings. This is because the bearing at the top of each mast makes up the triangle and the mast and its bearings must be strong.

The gearbox will contain mounting 4 points to pick up the engines 4 mounting points. There will probably be an adapter/spacer between the two.

Last Revised: May 31, 2008