Join Date: Jun 2010
Location: Redditch / Reichenau, , UK and Germany
Undoubtedly you will need to increase the pre-load up a fair bit. I'm assuming the stock OEM shocker?
You need to compress the spring as much as possible - to it's last adjustment [ OEM ]. That is to say shorten the distance the spring can travel.
I would then load the bike with all the luggage and passenger and then check the SAG of the spring - that is to say the difference between fully unloaded [ on the stand ] and with th weight on.
You will be looking for a compression of the unit of NO MORE than 1/3rd. Any more than that and the unit is in danger of bottoming out.
This is not unusual with OEM units
[ especially if more than 20K miles use ]. A shocker /spring has to cope with an aweful lot of compromise [ OEM ]. Soft enough to be comfortable one up with no luggage and fully loaded !
Anyway - enjoy your trip
"if at first you don't succeed, you've already been a failure once"