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CASE IH - Moissonneuse batteuse Axial Flow 1688 américaine

Autres marques: International Harvester
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francois02
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Re: Axial flow 1688

Message par francois02 » 30 sept. 2012, 19:50

http://www.toytractorshow.com/caseinter ... mbines.htm

et l'extrait:
In 1993, CaseIH introduced the 1644/1666/1688 models of Axial-Flow combines. On the outside they did not look much different from their predecessors, however, there were many changes inside. First, the Cross-Flow fan was introduced. It offered a more consistent volume of air to the sieves than the paddle-style fan that was used previously. The 44 & 66 models also received the Long Cleaning system for more capacity. An extra vane between the concave & grate areas eliminated a "dead spot" in the rotor cage between these 2 areas. The 1688 received a heavier separator drive belt and a heavier separator clutch assembly. Previously, the clutch was made of "steel discs" and "fiber plates". The new design used a "steel side" and "fiber side" on each disc and plate, allowing for more separator clutch capacity. The most noticeable change, however, was the reduction of engine RPMs on the 1666 & 88 models as the rated speed of the 8.3Liter engine was dropped from 2500RPMs down to 2200RPMs. This was accomplished by using different gearing in the PTO gearbox behind the engine as well as using a hydrostatic pump of higher volume to allow the same transmission speeds as slower engine RPMs. The engine horsepower increased as well on the new models as the 1688 used a 260HP, 8.3L turbocharged, intercooled engine. The 1666 used a 215 HP, 8.3L turbocharged engine. The 1644 used a 5.9Liter turbocharged, intercooled engine rated at 180Hp. The rated engine speed for a 1644 was still 2500RPMs. The 1010/1020 headers were improved in that the reel motor was moved to the RH side of the header, for better overall weight balance of the header. Also, the 1000 series cornheads began to use a "water pump-style bearing" on the front of the stalk rolls, replacing a bushing setup that required frequent greasing on previous models.

la grosse évolution serait donc l'apparition du ventilo cross flow

FLO32
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Re: Axial flow 1688

Message par FLO32 » 30 sept. 2012, 19:51

bonjour mon voisin a la même machine :good:

francois02
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Re: Axial flow 1688

Message par francois02 » 30 sept. 2012, 19:56

la même sans doute, mais le même numéro aussi?

FLO32
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Re: Axial flow 1688

Message par FLO32 » 30 sept. 2012, 20:22

je crois aussi ;)

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