Home
Главная
BMW
Мотоцикл
K75
Руководство по эксплуатации Страница: 15

BMW K75 [15/236] Crashbars

Содержание

Похожие устройства

Choosing and fitting accessories the manufacturer s instructions are followed carefully at every stage no serious problems should be encountered Note however that great care must be taken to ensure that the instrument rubber mountings are installed as on the standard machine See Chapter 7 Remember that hydraulic pipes that have been disconnected must be carefully re tightened and the hydraulic system purged of air bubbles by bleeding Two things will become immediately apparent when taking a motorcycle on the road for the first time with a fairing the first is the tendency to underestimate the road speed because of the lack of wind pressure on the body This must be very carefully watched until one has grown accustomed to riding behind the fairing The second thing is the alarming increase in engine noise which is an unfortunate but inevitable by product of fitting any type of fairing or windscreen and is caused by normal engine noise being reflected and in some cases amplified by the flat surface of the fairing Luggage racks or carriers Carriers are possibly the commonest item to be fitted to modern motorcycles They vary enormously in size carrying capacity and durability When selecting a carrier always look for one which is made specifically for your machine and which is bolted on with as few separate brackets as possible The universal type carrier with its mass of brackets and adaptor pieces will generally prove too weak to be of any real use A good carrier should bolt to the main frame and have its luggage platform as low and as far forward as possible to minimise the effect of any load on the machine s stability Look for good quality heavy gauge tubing good welding and good finish Also ensure that the carrier does not prevent opening of the seat sidepanels or tail compartment as appropriate When using a carrier be very careful not to overload it Excessive weight placed so high and so far to the rear of any motorcycle will have an adverse effect on the machine s steering and stability Luggage Motorcycle luggage can be grouped under two headings soft and hard Both types are available in many sizes and styles and have advantages and disadvantages in use Note that BMW s own range of luggage while expensive is of extremely good quality and matches perfectly with their machines Soft luggage is now becoming very popular because of its lower cost and its versatility Whether in the form of tankbags panniers or strap on bags soft luggage requires in general no brackets and no modification to the motorcycle Equipment can be swapped easily from one motorcycle to another and can be fitted and removed in seconds Awkwardly shaped loads can easily be carried The disadvantages of soft luggage are that the contents cannot be secure against the casual thief very little protection is afforded in the event of a crash and waterproofing is generally poor Also in the case of panniers carrying capacity is restricted to approximately 10 lb although this amount will vary considerably depending on the manufacturer s recommendation When purchasing soft luggage look for good quality material generally vinyl or nylon with strong well stitched attachment points It is always useful to have separate pockets especially on tank bags for items which will be needed on the journey When purchasing a tank bag look for one which has a separate well padded base This will protect the tank s paintwork and permit easy access to the filler cap at petrol stations Hard luggage is confined to two types panniers and top boxes or tail trunks Most hard luggage manufacturers produce matching sets of these items the basis of which is generally that manufacturer s own heavy duty luggage rack Variations on this theme occur in the form of separate frames for the better quality panniers fixed or quicklydetachable luggage and in size and carrying capacity Hard luggage offers a reasonable degree of security against theft and good protection against weather and accident damage Carrying capacity is greater than that of soft luggage around 15 20 lb in the case of panniers although top boxes should never be loaded as much as their apparent capacity might imply A top box should only be used for lightweight items because one that is heavily laden can have a serious effect on the stability of the machine When purchasing hard luggage look for the same good points as mentioned under fairings and windscreens ie good quality mounting brackets and fittings and well finished fibreglass or ABS plastic cases Again as with fairings 15 always purchase luggage made specifically for your motorcycle using as few separate brackets as possible to ensure that everything remains securely bolted in place When fitting hard luggage be careful to check that the rear suspension and brake operation will not be impaired in any way and remember that many pannier kits require re siting of the indicators Remember also that a non standard exhaust system may make fitting extremely difficult Handlebars The occupation of fitting alternative types of handlebar is extremely popular with modern motorcyclists whose motives may vary from the purely practical wishing to improve the comfort of their machines to the purely aesthetic where form is more important than function Whatever the reason there are several considerations to be borne in mind when changing the handlebars of your machine If fitting lower bars check carefully that the switches and cables do not foul the petrol tank on full lock and that the surplus length of cable brake pipe and electrical wiring are smoothly and tidily disposed of Avoid tight kinks in cable or brake pipes which will produce stiff controls or the premature and disastrous failure of an overstressed component If necessary remove the petrol tank and re route the cable from the engine gearbox unit upwards ensuring smooth gentle curves are produced In extreme cases it will be necessary to purchase a shorter brake pipe to overcome this problem In the case of higher handlebars than standard it will almost certainly be necessary to purchase extended cables and brake pipes Fortunately many standard motorcycles have a custom version which will be equipped with higher handlebars and therefore factory built extended components will be available from your local dealer It is not usually necessary to extend electrical wiring as switch clusters may be used on several different motorcycles some being custom versions This point should be borne in mind however when fitting extremely high or wide handlebars When fitting different types of handlebar ensure that the mounting clamps are correctly tightened to the manufacturer s specifications and that cables and wiring as previously mentioned have smooth easy runs and do not snag on any part of the motorcycle throughout the full steering lock Ensure that the fluid level in the front brake master cylinder remains level to avoid any chance of air entering the hydraulic system Also check that the cables are adjusted correctly and that all handlebar controls operate correctly and can be easily reached when riding Crashbars Crashbars also known as engine protector bars engine guards or case savers can be extremely useful items of equipment which may contribute protection to the machine s structure if a crash occurs They do not as has been inferred in the US prevent the rider from crashing or necessarily prevent rider injury should a crash occur The design of these machines is such that only the smaller engine protection bar can be fitted that is manufactured specifically for the model in question Some owners feel that certain types of bar can do more harm than good since the only possible lower mounting points are the tapped holes in the bottom of the crankcase lower section or sump oil pan it has been known for these castings to crack or for the mounting bosses to tear out under the leverage imposed by even the most gentle impact Since the crankcase lower section can only be renewed as part of the main cylinder b ock crankcase casting this means that the engine must be completely stripped and rebuilt or some extremely intricate and therefore expensive welding repairs carried out BMW s own engine protection bars are fully rubber mounted to minimise the chance of this happening but it is felt by some that the simplest answer is not to fit crashbars at all the engine unit is extremely strong in its own right and the outer covers can be renewed separately if scarred or broken If any bars other than BMW s own are to be fitted check that they are of well finished heavy gauge tubing with strong mounting brackets On machines with rubber bushes at the engine front mountings ensure that the bar mountings do not inhibit the free movement of the mountings If the right hand rear mounting is attached to the bellhousing mounting point ensure the bolt is refitted as described in Chapter 1 to provide a good earth point Exhaust systems The fitting of aftermarket exhaust systems is another extremely popular pastime amongst motorcyclists The usual motive is to gain more performance from the engine but other considerations are to gain

Скачать