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( also in the process I have found the lack of
maintenance performed
by the last owner/mechanic has paid its toll on
the bush and bearings in the swingarm end of the
dog bones.. it appeared it had never seen grease…)
I have set the suspension within the limits of its
quality and its not too bad… ( the tyres seem to
be the week point at the mo..
and wont be long away from correction.. a set of
metezeler M3’s await fitting…
The next task is to design a full exhaust system..
but I need certain info to do this and that includes
the cam info.. and it seems like its top secret..
every time you come to design systems the manufactures
treat one of more parts of the cam info as if it
was going to affect the worlds safety if they print
it any where.. still I have the bike and if worst
comes to worst I’ll measure the actual timing,lift
and valve sizes in the bike..
The gearing is up for a change, It is a little sluggish
off the line and as this is really a project to
build a punchy single for tight twisty ranges we
not looking for 185km/h top speed, as it is in standard
gearing. I’ll gear it down for the 160 to 165km/h
mark and this should get it off the line a little
more respectfully….
The other mod that has to be done on a time limit
is to raise the seat height.. as I am not a midget
but also not a giant I tend to look a little crushed
on it.. and the arse to foot peg relation has to be
stretched.. It will also put me and my body weight
in a better position.. and get my nuts slightly out
of halms way from the gonad cruncher they built in
to the tank.. |
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Here it is… bog stock standard..( this pic was
taken after the first modification) oh and a bloody
awful stayintune muffler.
This project was spawn form the necessity of a
second bike.. the duke 916 was off the road for
a major birthday after hitting the 100,000 km, certain
parts are taking way too long to arrive, and I have
run out off ppl to borrow bikes from.. so I searched
the net for suitable candidates .. not much for
the dollars I had to spend… this came up locally
and around my money.. ( I remember these from when
they first appeared on the market ).. I have always
been a fan of singles and it was time to have one
to play with..(although I have done plenty of motards)
so here it is…
First mod was to raise the rear ride height.. it
was like a chopper ( slight exaggeration ) low rear
end and rake angle that looked more at home on a
virago..lol..
Any how I manufactured a new set
of dog bones for the linkages to raise the tail
by 20 to 25mm..
this has tipped the front in nicely and allows
some trail braking with out upsetting the turn
in… |
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Its been on my dyno and the plans are afoot to
right the wrongs this engine is enduring at the
mo…
The poxy dual carbie thing that hangs off the back
of the motor is just nasty… and a proper twin carb
setup is in the wings…
Some research will have to go in to the cam profiles
that may eventually grace the head.. but for now
the standard ones will have to do.. but may be the
design of the exhaust will have to take this into
consideration unless I want to make another system
when the cams change… ummm will consider that
thought..
Those are the preliminary plans for now and as they
come to fruition I’ll post the results.. and pics..
(Time gap of about 3 weeks)
Ok latest thing has been the measurement and drawings
for the alloy seat frame..
I have also pushed the forks through by 6mm and
that has certainly made another step of improvement
for the turn in and the ability to hold a line through
the courner, Seems to be driving the front tyre
and actually letting it work… in stead of previously
seeming to load the rear up on acceleration and
driving wide out of a courner… the new single seat
unit will raise my body weight more over the front
so it may be a case that the forks might come back
out once that mod is completed.. we will see….
(Time gap of about a week)
new tyres went on this week.. I fitted metzeler
M3’s a great tyre and works well in our hot climate
and copes with the wet well.. which this time of
year we get a bit of as its our wet season.. They
have stepped it up a notch on the speed of the steering
and direction change. The profile of the tyre |
has a nice rounded and neutral radius.. The old
Dunlop crap had worn and at the best of times are
not a high profile tyre.. very flat rear even when
new..
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