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wkid_one
10th September 2003, 07:51
 
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<IMG height=338 src="http://www.mcnews.com.au/NewBikeCatalogue/2004/Yamaha/YZF-R1/2004_Red_RHF_450p.jpg" width=450 align=right border=0></TD></TR></TBODY></TABLE></CENTER></DIV>&nbsp;

Yamaha's YZF-R1 has always been a great looking machine.&nbsp; In fact it was our most downloaded wallpaper for 2002.

For 2004 the R1 looks even more striking, and Yamaha has thoroughly revised their sporting flagship for the new model year.
Changes include;


New bore and stroke, now 77 x 53.6mm (Previously was 74 x 58mm)

A new closed-deck cylinder block allows the larger bore engine to grow only 2.8mm wider (Rather than the full 12mm difference in bore size)

Larger bores allow for larger valves

Yamaha are claiming an amazing 180hp with ram-air assistance @ 12,500rpm

A shorter cylinder head now angled further forward

Intake camshafts now have more lift and duration

12.1:1 compression ratio (Up from 11.8:1)

Electronic fuel injection system now features secondary throttle valves

The new cylinder head allows the frame spars to go over the engine instead of around

The crankshaft is 16% lighter

The shorter con-rods for the shorter stroke engine are 9% lighter

Close ratio 6-speed gearbox

A new underslung die-cast truss swingarm (Claimed to be 30% stiffer)

The 43mm Kayaba forks have stiffer springs, fork offset increased by 5mm

Trail is reduced from 103mm to 97mm

New titanium exhaust system exits under the seat (stainless mid-pipe)

Radial mount calipers clamp on 320mm disc rotors

Brembo radial pump master cylinder

Narrower two-piece fuel tank. Fuel is kept in rear while front half contains new ram-air system

All new aluminium Deltabox main frame (Yamaha are claiming 200% more rigidity vertically, 50% stiffer laterally and 30% stiffer torsionally)

Frame width is reduced from 464 to 395mm

Clip ons are 10mm higher, pegs are 2.5mm further forward and 7.5mm lower

Headlights similar to that recently seen on the R6

New instruments with adjustable shift light

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Specifications - Yamaha YZF-R1 (2004)



Engine - 998cc, liquid-cooled, in-line four

Valvetrain - DOHC, 5-valves per cylinder

Compression Ratio - 12.1:1

Induction - Electronic fuel injection, dual throttle butterflies

Gearbox - 6-speed

Front Suspension - Kayaba 43mm upside-down forks, fully adjustable

Rear Suspension - Single shock with piggyback reservoir, fully adjustable

Front Brakes - 320mm discs with radially mounted 4-piston calipers

Rear Brake - 220mm disc

Tyres - 120/70-ZR17 (F), 190-50ZR17 (R)

Length - 2,065mm

Width - 719mm

Height - 1,105mm

Seat Height - 833mm

Wheelbase - 1,395mm

Rake - 24.0°

Dry Weight - 172kg
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Motoracer
10th September 2003, 09:52
FARK ITS MEAN!! :gob:

So they still couldn't loose a bit of weight on that beauty. No matter I still love it :)

Kwaka-Kid
10th September 2003, 22:10
shit, and to be honest, it was not even worth the cost of this free bandwidth to view that image!!!!

In my eyes they all look the same! tell me im not a real motorcyclist, tell me im blind, hell even tell me that i aint got taste at all! but just dont tell me you find the looks of those bikes apealing/at the very least different from eachother

i must admit, i honestly thought all those bikes were the same at first glace then that maybe they were different R1's or somthing.. aside from the bright GSXR...

all this plastic hides everything these days and all looks the same... back in the day when you could see the engine of a bike side on it was much better, you could see if they had shoved a diff engine in etc, and the great thing was there was so much change back then/variation that it never got boring to look @ a new bike, as they were just figuring out fairings etc.. now they are all identical and i do get bored.

I think us Kiwibikers are also loosing our old No.8 fencing wire attatude/ways.&nbsp; using taht saying may not bring up the exact picture in your mind im after.. what im after is the fact that who ever out of any of us kiwibikers has done any real mod's to any new 90's bike? maybe i should make a new thread as this is getting off topic... but years ago there were people putting this engine into that frame and that onto this etc and doing what we were known for.&nbsp; now you all just buy these bikes and are paying some genious japanese thoery man to do it all for you.. fair enuf, everybody to their own - as you all have seen the pictures of my RVF you know which side of the fence i stand on :) and im not even proud of that yet as its still to Mr. Honda like.&nbsp; Its going to get far more KK like!

Motoracer
11th September 2003, 11:32
Of course you are a real motorcyclist KK, more than some of us if I am allowed to say so. It all comes down to what people find appealing. I see what you are saying and I fully support the kiwi ingenuity, the good old DIY stuff that New Zealanders are known for. Its a lot of fun as well...

You are entitled to your opinion of course but that plastic stuff thats covering the engine is a work of art to me. Every curve, every bulge, every straight line gives a face to the bike to me. Engine, chassie is some thing like personality to me (how it handles, goes etc). I am very much into sports bikes, and the way I grew up, I have been more exposed to the fully faired bikes. So visually I think the plastic stuff is very important to me. If I stick a R1's 998cc engine into a R6 chassie then I would enjoy surprising people even more on the track.

A lot of work goes into putting a bike together obviously. Things like ergonomics, aerodynamics, weight have to be made just right keeping the mind about the visual beauty of the final product. So I reckon it really is like a form of art. Every time a person goes and buys a bike, he/she is showing the appreciation of the art, the accomplishment of a wonderful machine that the manufacturers have put together. Not every one is a mechanical genius, so buying a complete product is an option for enjoying a great piece of machinery.

Anyway, I had to say that because the R1 has been my favorite bike since it came out on '98 and she still hasn't disappointed me with the '04 model.