Big bang R1

Someone needs to explain this big bang thing to me like I'm a five year old. I'm guessing the cylinders don't fire with equal time in between them?

Originally Posted by ThEGr33k

The new R1 seems to have a firing order the same as the tourer VFR750's so will sound very sweet!

IL4 screamer (standard) is 180°/180°/180°/180° (hence the dull sound)

New R1 is (apparently) 180°/270°/180°/90°

VFR750 is 180°/270°/180°/90° So the same...

http://www.youtube.com/watch?v=sh707...eature=related Sound like this Muha ha ha.

http://www.youtube.com/watch?v=jnk7M...eature=related IL4 vs Big bang/VFR V4, which sound better

New R1, you can hear it a bit... but there isnt a decent sound bite there http://www.youtube.com/watch?v=Gj8pw...cyclenews.com/

Originally Posted by teriyakimonkey

Someone needs to explain this big bang thing to me like I'm a five year old. I'm guessing the cylinders don't fire with equal time in between them?

Does that above not make sense? Basically every half a turn of the crank in a screamer (a standard IL4) a piston fires.

A 90° V2 is Bang (1st cylinder at 0°) then 1 full and 1 Quarter turn for 2nd cylinder Bang (450°) then 3 Quarters of a turn (270°) to return to first cylinder.

A IL3 Hard to describe in amount of turn in words... Basically 240° between the firing.

With the big bang it isnt every half of a turn per fire, it varies. So for the new R1 its:-

Half a turn bang (180°),
3 quarters of a turn bang (270°),
Half a turn Bang (180°),
1 Quarter of a turn Bang (90°).

Then it starts again. Make better sense?

NOTE: It takes 720° (2 full turns) for the cycle to be complete... this is because its a 4 stroke.

Yeah thanks. I'm afraid I don't know my camshaft from my crank.

http://www.youtube.com/watch?v=famZ0x1Ce-0 (shows all the main bits of an engine).

This shows a standard IL4 setup, notice that 2 pistons go up and down together but as they get to the top they take it in turns to fire (only one per rotation...)

http://www.youtube.com/watch?v=V_e_gC99Ql0

This shows the new R1 engine. You will notice a difference in how the crank looks!

http://www.youtube.com/watch?v=Qwqy2osez8A

this is a V4 (same as in a VFR 750-800)

Originally Posted by DanAbnormal

Why do all these new-fangles bikes look crossed eyed?

I reckon it's because in classical Japanese art, someone being depicted as crosseyed denotes intense concentration. It's often used in the context of martial prowess; Samurais, Generals looking over a battlefield, etc.

the all new fangled jap bikes look...wrong. new fireblade; shamshed on the nose with a shovel. new r1...fairings shrunk in the wash and exhausts blown up a bit like a balloon. zx10r...maggots for front indicators...

GSXR looks pretty normal now

Anyway, I want a new R1. not because its new, because it dares to try something differant. For me, its the biggest change in bikes since the 1992 'blade (that introduced the idea of a big engine in a tiny, good handling chassis...now we have good chassis, and engines which have been pretty much the same....now we get a new type of engine, ok, its still inline 4, but its not a "screamer")

Originally Posted by alpinestarhero

the all new fangled jap bikes look...wrong. new fireblade; shamshed on the nose with a shovel. new r1...fairings shrunk in the wash and exhausts blown up a bit like a balloon. zx10r...maggots for front indicators...

GSXR looks pretty normal now

Till the next one. Dont matter anyway the Japs will never make a bike better looking than the K5-6 Gixxer 1000.

K6 (prev. generation) gsxr my dad has looks yummy, but i also prefer the K5 one (2 generations ago)

my fav lookin jap bike is honda RC30

Originally Posted by alpinestarhero

K6 (prev. generation) gsxr my dad has looks yummy, but i also prefer the K5 one (2 generations ago)

my fav lookin jap bike is honda RC30

You are getting them confused the 600/750 have different styling to the 1000 as they are on different cycles. http://www.motorcyclenews.com/MCN/bi...nt/?&R=EPI-439 is the K5/6 1000.

Even though the difference is small in the flesh the 1000 is MUCH nicer than the smaller brothers. Just a shame its OTT with the power and an IL4.

[yorkie_chris]

What's OTT with the power when it's at home? Are you actually suggesting some amount of power is too much? :-O