VWDiesel.net The IDI, TDI, and mTDI source.
General Information => General => Topic started by: 745 turbogreasel on May 10, 2010, 03:49:42 am
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6" x 9" does it for me :P
Starting a Field Marshall Series 2 Tractor (http://www.youtube.com/watch?v=vJrKglMrgTU#)
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That is really neat. Electrical systems are for wusses.
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"light your glowplug"
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I think Ièm going to delete the starter on my next diesel and install a crank ;D
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Can anyone explain the significance of the "expansion chamber" looking exhaust?
Edit: I found this, so I guess it essentially is a sort of expansion chamber after all being that it is a two-stroke diesel:
To start the Marshall a smouldering piece of special paper, containing saltpeter, is inserted into the cylinder head by means of the special screw-in holder in the cylinder head. The engine is then turned over with a starting handle placed in the starting dog on the flywheel. This is aided by the decompression valve, which decompresses the engine for anything up to 6 revolutions (generally 3 revolutions is sufficient - a spiral groove on the perimeter of the flywheel is used to determine the number of revolutions and position before top dead centre where the decompressor mechanism disengages and permits compression) to allow the flywheel to gain speed and inertia to turn the engine through compression, and get the engine to fire. Depending on the condition and mood of individual tractors, it is possible to get a thorough workout starting the Marshall.
A cartridge starting system is also fitted to the tractor. A shot-gun type cartridge is loaded into a breech on the engine's intake system. The smouldering paper is placed in the cylinder head, and the cartridge is fired by tapping the protrusion pin with a hammer. This puts a charge into the bore, sending the piston through its stroke, bursting into life. This method, however, deposits carbon which often causes jamming of the decompression valve if cartridges are regularly used. It also puts significantly more strain on the engine. Later versions of the Field-Marshall had more sophisticated starting systems available - electric starters were optional on the Series 3As.
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sofa king cool ;D