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I have had bikes since I was 18, the first
being a Suzuki GT 550 back in 1975. And at the last count
21 bikes in all. I have altered some of them at times in some
way or another. But the first real street fighter type was
back in 1986. It was a Suzuki GS 750, which I mono shocked
the back end, fitted 850 barrels & pistons, GSX 1100 tank,
GPZ bikini fairing with twin spots, single seat and GS 1000
forks. But the one bike I always wanted was Katana but never
got one. Four years ago I rebuilt a rusty old Suzuki GT 550
I was given by a mate into a street fighter with Yamaha running
gear, Suzuki katana tank and gsxr 1100 single seat, just to
pass the cold winter months away. That was when I decided
I wanted to build that katana I never got, but in street fighter
mode. So last August while laid up with a bad back for 5 weeks
with only street fighters mags to keep me going. I got on
the phone to straightline racing and ordered a katana 1100
frame complete with logbook and tank, as this was going to
be the basis for my project. Next up was the single sided
swinging arm, a phone call to hondaparts.co.uk with the dimensions
resulted in a NC30 swinger being the closest fit at 10mm narrower
than the gap between the frame swing arm pivot points.
I remember the wife having to drag
the box onto the front lawn and open it, so I could see the
contents from our bedroom window, which was a complete back
end of a Honda NC30, as I was not fully up and about yet.
When finally up and about, I needed a new spindle and bushes
/ spacers making to suit the swing arm bearings and 16mm spindle
as the Honda had a 20mm spindle. This was done by Graham engineering
which is local to me, and it all fitted exactly and central
in the frame, I had a real piece of luck though with the bottom
suspension link mounting, As it lined up perfectly with the
main stand mountings just having to trim down the right hand
side plates on each pair of lugs. I made a top mounting bracket
and welded a ¼ “ bracket on the under side of
the frame to bolt this to, and with the use of spacer blocks
I have got some up and down height adjustment if needed. I
also got a bandit 1200 shock of ebay, which looks like new.
With the rear end sorted I now needed a front end, and while
looking through my local add mags there was a complete front
end of a gsxr for sale, which I snapped up, billet yokes and
all. The lad who sold them was only, Chris the lad who had
the boiled egg kettle in your mag 5 or 6 years back.
Anyway these went straight in also
with only a larger outer diameter bottom taper bearing needed,
bit of luck that, no fucking about with the stem or anything.
At this time an article in your
mag on the pro’s & cons of ebay was very timely
as this was were I was to source the remaining items for the
project, a GSXR 750 H motor in frame with log book, the carbs
were also off ebay and I have jetted then up to 127.5’s
to take into account of the K&N filters and more breathable
exhaust. I made up some engine mounting plates in 5mm alloy
plate and on the second set was happy with the positioning
of the engine, (on the rebuild I made s/steel plates as these
are stronger and polished up really good). But now I would
need an exhaust just to make sure it all fitted and was ok.
So back to ebay and a practically brand new motad nexus complete
system with stainless down pipes was won. This went on ok
once the cross tube on front down tubes was removed. To keep
the stiffness in the down tubes I have put 2x10mm s/steel
tubes with 2x8mm thread bar all the way across the front down
tubes where the engine mountings are and pulled it all together
to stiffen then back up again. It was always my intention
to have an under/in seat system, so the silencer was cut of
as was the collector section and a piece of 2” pipe,
cut and lobster back welded to shape as a template, for exhaust
you fix in Darlington to bend a proper piece of 2” stainless
exhaust pipe to link from collector pipe to silencer in the
rear seat section, exiting out the back part of the single
seat unit were the light would have been. The seat unit is
off a Honda NC35 and is a racing seat which I have reinforced
with extra layers a fibreglass on the under side as they are
a bit flexible if you don’t. I also layered up the seat
base with 4 layers fibreglass and had it covered in red at
a local auto-trimming firm. The seat and a set of racing rear
sets were bought of the bloke who sells racing spares at Caldwell
Park. I made up some foot rest mounting studs and positioned
then through the frame exactly were I wanted them and welded
them into place to bolt the rear sets to.
I also cut, pulled up and reweld
the rear section of the frame to allow for the seat and under
tray to be mounted. The fairing is a fibre glass pattern item
from skidmarks as I wanted to fill in the front as I wasn’t
going to have any lights on the bike, but as you can see the
2 little spots from motor world looked really small and I
thought they would look really cool so I moulded them into
the fairing, I have made the bracket coming from the head
stock and mounted a plate onto that, which the lights bolt
on to separately, so the fairing comes off while the lights
stay in place, makes life a lot easier when wiring every thing
up. Also while in motor world I got an electronic rev counter
which is also mounted in the side lip of the fairing. The
screen is a cut down katana item from powerbronze. I have
altered the original wiring loom etc, as there are no indicators,
the rear light is an alien type from M&P as are the flat
drag bars in s/steel. Controls are a NC30 push/pull throttle,
and cables, which I have shortened to suit. I decided that
I wanted brembo gold line brake and clutch master cylinders
and 4 pot callipers for the bike so back to ebay again, where
I managed to win some at a price I was happy with and everything
a wanted. I knocked up some mounting plates from 3 layers
of 5mm alloy plate sandwiched together with glue; the callipers
bolt to them and then to the fork legs. I made up all the
braided lines myself getting all I needed from Cleveland flexible
engineering. The switches are little chrome things from vehicle
wiring products that advertise in all the mags. A quote from
a local spray shop for the hole bike of £1300 made the
decision to spray it my self easy, a lad at work had some
spraying equipment I could borrow so all I needed was some
where to do it! As my garage has now got 3 bikes in it , I
decided to put a metal 10x8 ft workshop in the corner of my
garden complete with electric’s and heater. Once the
dry fit was completed, the bike fired up straight away, and
after a ride up and down the drive a couple of times, it was
time to strip the thing down again for a full refurbishment
of all the parts etc. The frame, swing arm and wheels went
to romax at Stockton to be powder coated in candy red, the
frame and candy red over silver on the wheels and swinging
arm and other brackets etc, for £200.
With these parts done I set about
cleaning of the engine and giving it a coat or 2 of PJ1 engine
paint. With the engine back in the rolling chassis which I
had already put back together, with some Bridgestone 010 tyres
fitted to its wheels. I fitted some billet alloy cam to cam
links with crash bungs of ebay of cause to the engine. It
was then time to start polishing the engine casings etc. Then
a call to B&C express to sort out the chain and sprocket
set with engine sprocket to suit GSXR motor and rear sprocket
to suit NC30 wheel plus chain, this was no problem for them
at all. And using the old sprocket cut down as a spacer and
put behind the other sprocket give me perfect alignment to
the gearbox sprocket. I wasn’t happy with the very wide
original oil cooler, as it was to wide to fit in between the
fairing lower sides were I wanted it to go. So a call to BSR
aerotek sorted out the problem with a nice new 19 row earls
cooler, some hose and fittings to allow me to make my own
length of hoses to suit were I was mounting the cooler, this
all worked out a treat and fitting very nicely between the
fairing sides.
Now with the bike back together
again it was time to fire it up once again just to make sure
everything was ok. It was apart from the clutch slave cylinder
leaking , so back on abay to get another one, which is of
a later bandit.
Now it was time for the big job,
spraying the thing. I got all the paint etc from John Davy
in Middlesbrough, and in total cost about £200 not a
bad saving I think. The graphics I have used are from Morgan
designs and is ravie font as is the number plate lettering.
The colours are Suzuki silver and an Italian red metallic
base coats and a good few layers of 1 pack lacquer to top
it of, which when fully hardened will be flatted of and polished
up. Although not on the road yet due to the weather it runs
well and sounds really good and I will be looking forward
to running it all over the place next year. I have however
had it out for the MOT and it runs really well.
ENGINE
Suzuki GSXR750, billet cam – cam link with crash bungs,
K&N filters, stainless steel down pipes and 2” s/steel
intermediate section to inside tail seat silencer.
FRAME
Suzuki katana 1100 with modified rear section and stainless
steel home made engine plates
FRONT END
Suzuki GSXR 400 USD extended forks, billet yokes, billet risers
with s/steel flat drag bars with brembo master cylinders,
billet cycle Speedo holder and bandit 600 front wheel and
disks with brembo 4 pot callipers and s/s braided hoses
REAR END
Honda NC30 swinging arm and wheel with1200 Bandit shock,
BODYWORK
Suzuki 1100 katana tank, NC35 racing seat with polished alloy
under tray, Katana fairing altered to take small lights and
a cut down katana screen, GSXR 600 hugger altered to fit swing
arm and a bandit front mud guard.
ELECTRICS
Suzuki GSXR 750 loom modified by owner to suit hidden car
type ignition switch, small electronic rev counter mounted
in fairing side panel, LED. type oil pressure, neutral and
high beam lights, small chrome type switches.
PAINT
Powder coated frame, swing arm and wheels in candy red over
silver, and the body work in Suzuki silver and red by owner.
POLISHING
All by owner.
ENGINEERING
Swing arm spindle and spacers by local firm, frame mods and
welding by owner.
THANKS TO
Shaun at work for the s/s welding on the exhaust. Graham engineering
for spindle and spacers for swing arm and 5mm alloy sheet.
Romax at Stockton for powder coating, and all the staff at
J davy for there helping me find me a red to match candy red
on the frame as I am colour blind.
And last of all the wife for not giving me any grief about
building another bike again. Although she would not let me
spray it in the bedroom this time around.
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