Quasi,s Race bike Dyno chart

[FROSTY:Me]

hoon--he is currently running --believe it or not 13/45
Insane but maybee it works with the sp box.
I suggested at least a 14 front but yea a 15 is more likely

[loosebruce]

infact i wonder if anyone on this site knows the way everyone use's the terminology with no idea

I know all i need to know:
Turn throttle, bike goes forward
Hit rev limiter (not on the TL thou) gear goes up
Find corner, use brake thing too slow down, go round corner without excedding grip levels (may overlook on the exit though)
Gear to low to go fast, gear goes down
Bored on a straight, front wheel goes up
Bored slowing down, back wheel goes up
Red n blue lights, go faster then red n blue lights
Helicopter spotlight, me fucked
Feul light on, gas goes in.
Tyre not grip, new tyre

Fuck this biking shits easy init, whats all this HP, torque, air pressure mumble jumbo, do bikes have that? What it look like eh?

[cowpoos]

I know all i need to know:
Turn throttle, bike goes forward
Hit rev limiter (not on the TL thou) gear goes up
Find corner, use brake thing too slow down, go round corner without excedding grip levels (may overlook on the exit though)
Gear to low to go fast, gear goes down
Bored on a straight, front wheel goes up
Bored slowing down, back wheel goes up
Red n blue lights, go faster then red n blue lights
Helicopter spotlight, me fucked
Feul light on, gas goes in.
Tyre not grip, new tyre

Fuck this biking shits easy init, whats all this HP, torque, air pressure mumble jumbo, do bikes have that? What it look like eh?

piff....you ride like a girl....

[loosebruce]

piff....you ride like a girl....

I am a girl, and i'm secertly in love with Quasi my 60hp hero (something about balding late aged men).
But dont tell anyone, something about being beaten by a girl upsets some guys, dunno why.

And i cant explain my excess in facial hair, or the cleveage and back hair, bloody itchy when i sweat it is.

[cowpoos]

I am a girl, and i'm secertly in love with Quasi my 60hp hero (something about balding late aged men).
But dont tell anyone, something about being beaten by a girl upsets some guys, dunno why.

And i cant explain my excess in facial hair, or the cleveage and back hair, bloody itchy when i sweat it is.

try waxing

[thealmightytaco]

For an engine:

Torque = Force x Distance
Power = Torque x Angular Velocity

Torque is how much meat your crankshaft has to turn with, the turning force creating by the piston exploding downward, which is a product of the force created by the explosion times the radius of your crankshaft.

And power is the product of that happening at speed.

You can have huge torque but because it's not revving all that highly when the highest torque is created you don't have alot of power, while with less torque happening at a shitload higher revs you can get more power. Essentially any form of "power" is the work done in a certain time frame, so here you can almost think about it as more power = more torque per second. Not strictly correct that last bit but a good way to visualise it.

This all then means that with more torque you have more resistance against being slowed (tractors), while with more power you have more acceleration (anything with high revs; dragsters/F1/etc).

Now go to bed.

[loosebruce]

All i know is your bike has fuck all of any of that

Now you go to bed

[Quasievil]

Bugger.. Can I edit my post then huh huh ..


Quasi.. I think moving to a 15 from a 14 will increase your driving force by about 0.2 kN in each gear ( I think you said you were on a 15:47 - so are moving to a 14:47).

but. You'll lose a few kph in each gear as a side effect of doing so - this means you will need to change gear 5kph earlier than I said in the previous post (about 45k for 1st, 95k for 2nd).

At the moment Im on a 13 front and a 47 rear, I changed the front down one toothe as I was not able to give it a full rpm assault in 6th gear on the back straight of puke, as well as I hoped for a better launch.
Im thinking i will try the 13 on a test day and swap it to a 14 as well to see the differences.

[Hoon]

hoon--he is currently running --believe it or not 13/45
Insane but maybee it works with the sp box.

Yeah I suspect something radical is happening in his gearbox to use those sprockets. The ZXR400 is 1.111 6th gear so the close ratio must be closer to 1.00.

Quasi, here is a gearing spreadsheet I use. Got it off a TL1000 site and just punched in the numbers to suit. Theres probably better ones out there but this does it for me.

Another thing to keep in mind when changing sprockets is how it affects your chain length (and wheelbase). I try to keep mine no more than 2 links each way....well I have to otherwise I'll need a longer chain!

[TwoSeven]

At the moment Im on a 13 front and a 47 rear, I changed the front down one toothe as I was not able to give it a full rpm assault in 6th gear on the back straight of puke, as well as I hoped for a better launch.
Im thinking i will try the 13 on a test day and swap it to a 14 as well to see the differences.

Moving from a 13 to a 14 will give you less driving force, again another 0.2kN (about 7% per tooth). But again you will get an increase in top speed in each gear (roughly 7-8% difference). So back to 60kmph and 100kmph as your change points.

Out of interest, if the start and a corner only make up say 2% of the race - why try and tune the bike for it ?

[TwoSeven]

On the torque thing. I generally work using driving force, which is what it says it is. Its also measured on a scale - so easier to use, since each gear is a unit on the scale. I use power (it BTUs) when I am thinking engine internals (piston, zorst) etc) and I use power (bhp) when I think engine internals (rods/crank/zorst) and torque when I am thinking the shape of the power delivery (gear box, zorst). Thats just my way of doing it - I find it easy to visualise things that way.

You get things like 1st = 2.55kN, 2nd=1.85kN ... 6th=0.94kN etc using driving force. Its good to use when you are trying to work out the effects of change - hence the sprocket changes above I gave in kN and percentages. Biggest problem I have is trying to work out what each figure feels like in real life - it involves riding lots of bikes to get a feel for the characteristics.

Some things are obvious tho, 0.94kN in 6th gear is why it takes 20 miles to increase speed 10mph. Whereas 2.55kN means it doe it in a knats whisker of a blink of an eye.

[cowpoos]

For an engine:

Torque = Force x Distance
Power = Torque x Angular Velocity

Torque is how much meat your crankshaft has to turn with, the turning force creating by the piston exploding downward, which is a product of the force created by the explosion times the radius of your crankshaft.

And power is the product of that happening at speed.

You can have huge torque but because it's not revving all that highly when the highest torque is created you don't have alot of power, while with less torque happening at a shitload higher revs you can get more power. Essentially any form of "power" is the work done in a certain time frame, so here you can almost think about it as more power = more torque per second. Not strictly correct that last bit but a good way to visualise it.

This all then means that with more torque you have more resistance against being slowed (tractors), while with more power you have more acceleration (anything with high revs; dragsters/F1/etc).

Now go to bed.

80% correct.....rep dispatched

[Two Smoker]

piff....you ride like a girl....

hehehe, so do you....

[FROSTY:Me]

At the moment Im on a 13 front and a 47 rear, I changed the front down one toothe as I was not able to give it a full rpm assault in 6th gear on the back straight of puke, as well as I hoped for a better launch.
Im thinking i will try the 13 on a test day and swap it to a 14 as well to see the differences.

Quazi--honestly mate that just screams WRONG to me --see if ya can borrow a 15 and a 16 or maybee a 45 rear --I think you're gonna run outa revs before the kink with that 13 on

[Quasievil]

Quazi--honestly mate that just screams WRONG to me --see if ya can borrow a 15 and a 16 or maybee a 45 rear --I think you're gonna run outa revs before the kink with that 13 on

I got a 44 rear, and a 14 front but Im thinking of putting that 14 back on and dropping the 13. I might put the 44 back on as well, thats original spec then (I think)