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adjust the seat to a position that suits your leg length and bottom bracket sled position. The legs should 
not be fully extended when pedaling. Straight legs often lead to knee pain and are also not effective. 
So if you have found a position for yourself as far forward in the vehicle as possible, you still have to 
adjust the angle of inclination of the seat and the head rest area. You can find information about this 
here: 

 

5.7.2 Quick settings 

 
Quick settings include seat position, seatback angle, and headrest. 
You can snap the seat into different positions in the locking rail. Choose a position where you have the 
correct distance to the bottom bracket (see previous paragraph). 
Now choose the right headrest adapter according to the following scheme: 
 

 

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 at all. 

 
The adapter is fixed using the Velcro fastener, as far back as possible, so that the inner foam block also 
grips with its Velcro. 
The adapter still receives the pillow, which is also attached with Velcro. 
The seat back inclination is now adjusted using a rigid foam board (a stack of foam boards located 
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 forward (impaired 
breathing). However, a comfortable resting of the head is favorable for longer comfortable driving. 
The  flat  seating  position  in  connection  with  the  well-adjustable  headrest  allow  long  and  relaxed 
driving. Experiment with fine tuning. Driving pleasure is largely dependent on the optimum overall 
setting. 
 
 

5.8 Correct setting of the tiller cable 

 
The steel cable that holds the steering column away from the driver can be lengthened or shortened 
using a clamping screw. 
The optimal setting will be with the steering column about 10-15 from your stomach and chest area. 
This prevents your body from hitting the steering column in a frontal crash. 
Furthermore,  this  enables  good  breathing  and,  in  conjunction  with  side  armrests,  creates  a  stable 
steering triangle. 
The armrests should be adjusted so that they support the arms when your hands are on the steering 
column. 
 

6. Hoods and lids 

 

6.1 Foam combi-lid 

 
This two-piece hood has been developed for those who prefer to drive with an open head, but also for 
flexible everyday use with stowability. The combi-lid  can be stowed in the rear on the left-hand side. 
So you can decide while driving whether you want to make an adjustment to the weather conditions. 
 

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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