Adjusting to your size
28
Check that there is at least a 5 cm (2") clearance be-
tween the end of the chaintube and other parts of the
drive train
Attention!
Take care that the
chain protection tubes have a clearance of
at least 5 cm (2") to the rear derailleur and
the front derailleur even under maximum
tension of the chain and make sure that
the tubes are held tight in their fastenings.
The front upper tube can be moved to the
rear for length adjustment. Shorten the
tubes if necessary. If the end of the chain-
tube gets in touch with the rotating chain
rings it can be locked-up and destroyed.
The chaintubes must be prevented from
moving by a rubber tube over the reten-
tion spring.
After adjusting the front boom, the gap in the
clamping between the front boom and the
main frame can be sealed with wax or silicone
in order to protect your frame from the pen-
etration of water and dirt.
Adjusting the length with front boom
quick adjust
The front boom quick adjust is additional
equipment for HP V
ELOTECHNIK
recumbents
that feature a telescopic front boom for leg
length adjustment. It replaces the standard
bolts of the front boom clamping by quick re-
lease levers. Two pulleys provide chain length
compensation while moving the front boom.
The front boom must be clean and free from
wax or tenacious remains of chain lube to
make sure it can be easily slid in and out.
First, shift the chain to the largest chain ring
and the largest sprocket to check the correct
chain length.
Routing of the chain over the idlers of the front boom
quick adjust
Open both quick release levers. Slide the
front boom into the frame or pull it out until
you’ve reached the required frame length.
To slide the front boom in, grip the cranks
and turn them against the tensioned chain.
The force on the chain helps to move the
front boom into the frame tube.
To pull the front boom out, grip the derailleur
tube if available. If you pull at the cranks, you’ll
have to turn them backwards at the same
time, else the tensioned chain will balk the
motion.
