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removed, the wheel is removed from the brake plate and the ease of movement of the brake lever on 
the brake plate is checked. The brake cams may need to be relubricated so that they can move smoothly 
again. With heavy use, for example by regularly driving uphill, the brake pads can wear down to such 
an extent that mere tightening with the cable tensioner is no longer sufficient. In these cases, it can 
happen that the brake cams turn past their dead centre and no longer reset themselves. 

 

5.1 Chassis 

 

The rod ends used in the chassis are subject to wear depending on driving style, mileage and weather 
conditions.  Worn  angle  joints  can  impair  the  driving  characteristics  and  must  be  replaced.  We 
recommend checking the angle joints every 5000 km. Even when new, the transmission parts of the 
steering and front axle already show a noticeable minimal play. If this play increases significantly, the 
angle joints must be replaced. For all assembly work on the front axle, the track must be checked again 
and readjusted if necessary (see chapter "Adjusting the track"). The track can also be misaligned during 
extreme  driving  maneuvers  where  the  front  wheels  collide  with  edges.  Safety  note:  bent  front  axle 
parts must never be straightened, they must be replaced. Even corrosion damage is safety-relevant here 
and must be avoided by taking appropriate precautions (cleaning from salt and dirt, sealing, checks) 
Trailing arms: These are the M-6 threaded rods with rod ends that run in the direction of travel from 
the foot of the strut to the front through the wheel housing. When passing through the wheel arch, there 
is an elastomeric rubber inside and outside as well as a rubber grommet. These buffer the steering and 
spring movements of the trailing arm and ensure that there are no significant bending forces on the 
trailing arm. When these elastomeric rubbers are worn out, they must be replaced. Sometimes simply 
tightening the screw connection is enough. The important thing here is that the screw connection must 
not be tightened too tightly, as this would result in excessive bending moments on the threaded rod. 
After tightening the screw connection, you should still be able to turn the trailing arm in the elastic 
bearing with your fingers. 
 

5.2 Drive 

 

Despite the encapsulation of the drive, it is unavoidable that dust and dirt get into the chain and gears. 
Therefore, clean and re-oil the chain every 1000 km. A well-maintained drive can last a very long time. 
If you put a lot of sand and dirt in the vehicle with your shoes and you lay the vehicle on its side (e.g. 
due to maintenance or repair work), the sand can get into the drive. Therefore, remove the sand before 
turning it over. Make sure that no small parts fall into the drive train and are taken along by the chain. 
The water that collects in the water box drains down through the front frame through drainage holes. 
This passage can become clogged. Then check the drain and remove the incrustations if necessary. 

 

5.4 Setting the track 

 

Precise alignment of the track is crucial for the smooth running of the vehicle and the life expectancy 
of the tyres. The track is set at the factory with a gauge. 
The track is set at the factory so that the distance between the rims at the front (measured at underbody 
level) is about 2-4 mm less than behind the axle (measured at underbody level). 
This means that the wheels come together 2-4 mm in the direction of travel. If you want to readjust the 
track, dismantle the joint head of the tie rod at the spring strut foot. If you turn the joint further onto 
the threaded rod, you shorten the tie rod and the wheels point further apart towards the front. If you 
want to bring the wheels closer together towards the front, you have to lengthen the track linkage, i.e. 
turn the joint head to the left. Attention !: At least 6 mm of thread must remain in the joint head and 

Summary of Contents for Bulk MK1

Page 1: ...d vehicles 4 3 While driving 5 4 Information on the special features of the vehicle 5 4 1 Brakes 5 4 2 Steering 6 4 3 Cornering 6 4 4 Speed 7 4 5 Lighting 7 4 6 Body 7 4 7 Behaviour in traffic 7 4 8 L...

Page 2: ...seat 12 5 7 1 Basic settings 12 5 7 2 Quick settings 13 5 8 Correct setting of the tiller cable 13 6 Hoods and lids 13 6 1 Foam combi lid 13 6 2 Hood for daily use with moped visor 14 6 3 Racehood 14...

Page 3: ...carefully and to follow them The B lk MK1 has like velomobiles in general some special riding characteristics that are not known from normal bicycles and that can lead to dangerous situations if the r...

Page 4: ...t should never be less than 6 mm The end of the trailing arm which leads through the wheel housing should definitely be screwed on with a self locking nut and have a sufficient thread protruding The c...

Page 5: ...y e g because you shifted while stationary the chain can jam with the rear derailleur and cause damage Stop the backward movement immediately if you feel resistance or hear a suspicious noise Since th...

Page 6: ...g using the steering levers on the front wheel housing it is in principle possible to steer with one lever but note that in braking situations both hands are needed to operate the left and right brake...

Page 7: ...rly visible in traffic 4 6 Body With the B lk MK1 the body takes on a supporting function and is not only responsible for wind and weather protection However so that the body can be built as lightly a...

Page 8: ...t feel any pressure while riding but the distance to your shoulders is no more than about 1 cm 4 10 The tiller cable The steel cable with which the steering column tiller is adjusted in its inclinatio...

Page 9: ...aching them as obliquely as possible Do not under any circumstances drive over deadlocks at high speed Potholes can also lead to bottoming Feel your way towards these conditions 4 14 Boarding and dise...

Page 10: ...with the visor becomes too poor you should open the visor a little 5 Maintenance and Self Help The wear on the drive components is significantly lower than on a normal bicycle This is because the chai...

Page 11: ...en these elastomeric rubbers are worn out they must be replaced Sometimes simply tightening the screw connection is enough The important thing here is that the screw connection must not be tightened t...

Page 12: ...oft pad and secured against each other so that they cannot tip over The support points should be chosen so that the stiffened parts of the B lk are supported so that the body does not buckle Remove lu...

Page 13: ...ated behind the seat so that it fits the head position in the head rest adapter The head should neither be looking too far into the sky poor vision with varifocals nor should it be bent too far forwar...

Page 14: ...hen the inlet will open When you push the actuator back up you close it again Under no circumstances should you try to open it by turning the actuator The actuator may only be pulled or pushed otherwi...

Page 15: ...chapter 5 7 Here are the approximate sizes again Persons from 145 165 cm choose the adapter small Persons from 165 180 cm choose the adapter medium People over 180 cm usually do not need an adapter a...

Page 16: ...cause then they will be pushed out of your ideal line and the drive will no longer run efficiently The chain then rubs in the chain tube With the carbon cover you can avoid this and use the space behi...

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