|
As with all bikes the suspension they come with is a compromise
by the factory. Standard suspension has to cater for the lightest
rider to the heaviest rider and also take into consideration pillion
passengers. Therefore, regardless of what a manufacturer states
or claims in the PR blurb, the suspension they fit to their bikes
is built to a budget and mass produced, so this naturally compromises
the quality and therefore range of accurate and worthwhile adjustment.
It keeps the overall cost of the bike down too, very important that.
Examples of this are seen with the many bikes, take the Yamaha R1
or the new Duke 1098, if you want one with PUKKA suspension you
have to buy the R1 SP or the 1098S, therefore another 2-3 grand
on the cost of the bike, it makes sense and I wish I could afford
it, but if you only want to change suspension, the cost can be much
less than that.
It is true, that adjustable suspension is exactly that, it's adjustable,
so you can play around with it and it is worth doing to find out
if little changes/adjustments, make little differences, big differences
or no difference at all. The new Gixer 750 K6 even has low and high
speed compression damping as standard, so Suzuki are helping, but
again, it's gonna be a cheaper and nastier version than after market,
be it off the shelf or custom built components.
Suspension set up is a bit of a 'Black Art', but I have enjoyed
adjusting my suspension from time to time and on my current bike
have it just about how I like it, but again, the bike still feels
vague when cranked right over, (from reading write ups on new bike
launches, this is a trait of all sports bikes it seems), I just
can't get the feel that I want from the front end. This is even
with good grippy tyre choice being Metzeler Racetecs, having tyres
like this still allows you to take the piss a bit, but it would
be nice to be able to feel exactly what the front tyre is doing.
I have replaced rear shocks on a number of my bikes over the years,
but I have never got around to changing the fork set up, I have
always settled for that compromise, but have been relatively happy.
However,
fork internals conversions are something that a number of our group
have done to their sports bikes and it's always for the same reasons,
to get rid of the vague feeling at full lean and to have an improved
spectrum of adjustments. It also means that the smallest of adjustments
to quality suspension do make noticeable differences to road or
track riding. Note - only make one adjustment at a time though and
try it, before making more.
With the Winter coming I thought it was time to strip the forks
out and get them re-valved, re-sprung and whatever else is included.
So that's exactly what has been done to them, they have been sent
off to MC Techics, (link on links page) to Darren and he has kindly
changed everything for me. This now means that I will have K-Tech
compression stacks, WP fork springs and revalved rebound damping.
Including an oil change, this all costs a total 395 quid, but add
to that postage and packing. There are cheaper options, but I wanted
the best I could get for around that price and this covers all I
require.
If you want to go ahead with this improvement for your bike, the
info you need to give to MCT is;
i/ Most commonly used road type, for me this is mainly back
roads and bumpy roads (I live in Belgium remember), with little
track use other than the Ring of course.
ii/ Your overall weight, when wearing boots, leathers, gloves and
lid. Be honest and as accurate as you can be, it makes a difference
for the spring weight used.
iii/ Pillion or not, but if you do, you could be wasting your time
and money, so probably best to call first and see what options there
are open to you.
Why did I use MCT? Well, it comes back to KRJ's racing days, he
had all sorts of problems getting a proper race set up for his TLR
back in his Sound of Thunder days, but he was eventually advised
to talk to Darren, he did and he started to win races. Further to
that, Keith got a rear shock for his R1 from MCT and I also bought
a WP rear shock for my RR3 Blade from them and the after sales service
I received regarding set up etc. was second to none, and when suspension
is a 'Black Art', this is worth it's weight in gold.
One
other thing Darren has changed for me too is the compression adjustment
screws, (I didn't ask him to), it appears that Honda have fitted
a rather unsatisfactory compression adjusting screw to the RR4 and
RR5 Blades (can't comment on previous models), the problem is that
it has a flat end to what should be the pointy end and according
to Darren this can cause 'choking' of the oil, therefore affecting
the compression damping on bumpy roads.
As Darren refers to bumpy roads, this suggests the high speed damping
quality is impaired. The CBR1000RR6 is not the same, it has a much
more tapered adjustment screw, but again, it backs up the point
of what I have written above, low budget and mass produced, equals
low quality.
There will also be a WP rear shock coming some time in the near
future, but I wanted to experience the full effect of the forks
conversion first.
First
road test
Sunday,
and the forks go back on the bike - well, there isn't much else
to do this time of year. As my tyres are a bit past it and I have
ordered new ones, plus I am considering some new front discs, I
decided I would leave the front wheel out and complete the job in
a couple of weeks when I'd brought the tyres back from the UK and
then do the test ride.
But the sun was shining, the roads looked to be fairly dry and
I just had to know whether my investment in the front forks was
worthwhile, or at least get an idea. So the front wheel went in
and I was out heading south towards some decent roads to give the
forks a quick test.
Now, I had been advised not to expect too much in the way of first
impressions, as upgrading fork internals is a more subtle change
than one might expect, but, all I can say is I noticed a vast difference
almost immediately. There was none of the familiar patter over small
consistent bumps in the road that I used to transmit it way up through
the bars, the front end seemed to soak them up easily enough, leaving
a nice plush, progressive but firm enough feel from the high speed
compression damping, so I was pleased about that. The low speed
compression damping when braking hard felt fine too and also very
controlled on the rebound with out feeling too much travel, I could
probably take a turn out of the rebound, but I won't yet, I need
a longer test ride for that, so presently all settings are as Darren
left them:
Compression: 2 turns out.
Rebound: 2 turns out.
Pre-load: 10 turns in, leaving 30mm of static sag.
Oil: 5 wt Motul, level 100mm.
When tipping into a bend I didn't notice too much of a difference,
but I think much of that may be down to a front tyre that is way
past it's best, and probably myself erring on the side of caution
because of cold roads and being a bit damp in places, but on the
whole, I am well chuffed with the results.
|