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4.4 Speed 

 
The Bülk MK1 is built in such a way that you can reach speeds with little pedal effort that can only be 
achieved with a normal bicycle with great effort. 
Even a hobby cyclist can quickly develop a life-threatening speed on a slight incline, since the wind 
hardly slows the vehicle down. 
So drive in a manner appropriate to the environment and traffic so as not to endanger yourself or others. 
Regularly check your tires for chafing, cuts or broken-in splinters and thorns. A burst tire (especially 
the  rear  wheel)  can  quickly  lead  to  loss  of  control  of  the  vehicle!!  If  the  rear  tire  loses  air,  this  is 
noticeable  through  a  spongy  driving  experience.  In  such  a  case,  stop  immediately  and  check  the 
condition of the tires. 
When mounting the tires, make  sure that  the inner tube does  not  get  caught  under the tire. A  good 
"slipping of the hose into the jacket" is achieved by talcum powder that is distributed in the jacket. 
Don't use cheap hoses. 
Change the coats in good time, this applies in particular to the rear wheel. 
 

4.5 Lighting 

 
In order to be allowed to drive on public roads, an approved lighting system is required on the vehicle. 
The  Bülk  MK1  is  not  automatically  equipped  with  this  from  the  factory  (this  also  depends  on  the 
regulations of the respective country) and those who use public transport may need to supplement the 
lighting system. In any case, it is advisable to use high-visibility lighting even during the day in order 
to be clearly visible in traffic. 

4.6 Body 

 
With the Bülk 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 as possible, reinforcements are 
only incorporated in  stressed areas.  For this reason, the body must not  be subjected to  heavy loads 
either from the inside or from the outside, and point loads in particular should be avoided. Only the 
reinforced edge of the hatch is suitable for absorbing limited supporting forces when getting in and 
out. 
 

4.7 Behaviour in traffic 

 
Velomobiles  are  a  very  rare  phenomenon  on  the  road  and  usually  cause  great  astonishment  or 
uncertainty. You have to assume that it is difficult for drivers to estimate their speed. 
From behind or directly from the front, the visibility of the Bülk MK1 may be worse than with a normal 
bike due to its small frontal area and its low height. Therefore, always ride with eye-catching lights 
even during the day and keep an eye on the traffic behind you through the rear-view mirror. 
When using the road, do not allow yourself to be pushed too far to the side of the road while being 
overtaken. If you slide off the road surface with a front wheel and get caught on the edge of the road, 
this can lead to difficult situations. 
If you use bike lanes, consider their low elevation and the fact that motorists may not see them in time. 
Hedges or cars easily obscure the view of such a low vehicle. 
Therefore, always drive carefully, especially on exits, and be ready to brake, even if you have the right 
of way. 
The Bülk  MK1 has  a low ground clearance for reasons  of aerodynamics and cornering stability.  In 

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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