All round suspension
service and rebuild will make a big difference to the way the bike feels -- like
cosmetic surgery combined with many trips to the gym -- it will look and feel a
We spoke to Dave
Parkinson at DIP Racing (email@example.com
or 0033-682-709627) for his take on a suspension makeover:
Kayaba rear shock is a decent bit of kit, but the Teflon-coated DU bush that
slides up and down the damper rod will need replacing, as will the rubber seals
and any shims that look worn.
"The spring might
look cruddy, so a rub down and respray is always nice, but it won't have lost
have lost its power, apart from settling slightly, which is why older bikes
need a bit of rear preload dialed in after 10,000 miles. 3.5 to 5 weight good
quality suspension fluid is a must.
"This set up is
good enough for track work, if you were really into the circuits, a bit more
high-speed rebound damping would give you better tyre wear."
The front forks
are Kayabas again, and have good quality 20mm cartridges in them that are the
same as the race bikes of that era, so you are starting from a good base.
springs might have their place on a touring bike floating over poor surfaces,
but on a sports bike the feel close to the limits of your ability of the bike's
tyre grip is what really matters. Linear-rate springs will deliver more
consistent feedback of what's happening at the sharp end when you keeled right
over and almost fully committed, according to Dave. If you are pushing 15 stone
go for 0.95kg/mm up front, if you haven't got a belly 0.90kg/mm springs will
The aim of a fork
service and rebuild is to give you finer feel and also a wider range of
adjustment, but you can stick to the standard shims and run 7.5 to 10weight
"The advantage of
a re-shim is that the oil passing through the cartridge is being metered
better, is more controlled so you can run a lighter weight oil, which reacts
quicker itself, giving you the feedback you need at 80mph through a bumpy
right-hander." Says Dave.
Prices vary in
the industry, but a typical price is £90 plus p and p for a shock rebuild, £90
for a fork service and £200 for a fork service and rebuild to your