treedomain.blogg.se - Dellorto Phbh 28 Manual

DELLORTO PHBH 28 MANUAL FULL

To obtain optimum combustion between these inflammability limits, a value very close to the so-called stoiciometric value is needed ie. 7 kgs of air and 1 kg of petrol), down to 20:1 (lean limit ie. Lnflammmability limits for commercial petrol are: 7:1 (rich limit ie. We have spoken of a "proper" mixture because the mixture strength, defined as the amount of air in weight mixed with a fuel unit of weight, must have a precise value,ie it must be within the limits of inflammability so that the mixture can be easily ignited by the spark in the combustion chamber. The fuel-air mixture is formed through vapourising and by uniformly spraying fuel into the airstream or at least by atomising it into very small droplets.Ītomisation takes place in this way: liquid fuel from the atomiser nozzle meets the flow of air which carries it, broken into very fine droplets, to the combustion chamber.

To supply the engine with varying amounts of this mixture.

To form a proper homogeneous inflammable mixture of fuel and air.

Changes in atmospheric pressure and air temperature.

FACTORS WHICH CAN ALSO AFFECT THE CARBURATION.

Selection of correct pump cam and pump jet.

Selection of the throttle valve cutaway.

DELLORTO PHBH 28 MANUAL FULL

Full throttle system as usually used on four-stroke engines.

Full throttle system as usually used on two-stroke engines.

Selection of the correct size of idle jet.

Setting the idle with an air adjusting-screw.

Setting the idle with a mixture adjusting-screw.Selection of starter emulsion tube and starter jet.Selection of the correct carburettor size.OPERATION, SELECTION OF CORRECT PARTS, TUNING AND USE.Carburettor diagram and principal parts.Please contact Gregory Bender with any questions, corrections, or suggestions for improvement.Ī GUIDE TO THE CHOICE, SETTING AND USE OF TAPERED NEEDLE MOTORCYCLE CARBURETTORS Technical : The complex stuff - exciting but heavy reading, take your time.

O-rings, seals, and gaskets - what you need to repair. Special tools - see why you'll need them. Gearing - Contains a nice utility for calculating gear ratios, Wiring - more warnings than help, I guess.Ĭarburetor - drawings, charts, and a how-to guide. Tuning - information on what will make it go faster. Gasoline - will a Moto Guzzi run on unleaded gasoline ?Įxpected mileage of parts - a VERY rough guide to the expected lifetime of various parts. Moto Guzzi frame numbers - is your bike what's its supposed to be ?