How do I work out theoretical rear wheel revolutions?

Originally Posted by the_lone_wolf

how cool is that, is that in visual basic? - i've been getting to grips with the basics (no pun intended) but kind of hit a wall when i couldn't think of anything useful to apply it to...

have you seen this:

http://blogs.msdn.com/coding4fun/arc...8/1709215.aspx

Yeah VB, like you I needed an excuse to play!! I could 'polish' it more or add cool graphing gizzits, but it does all it needs to as it is ... oh and in my calculator, if you click the 'page' icon on the tool-bar, you can make another child window allowing you to have 2 (or more) configurations side by side

I confess I didn't read the whole article, but I got the gist and yeah, looks cool!

[northwind]

Originally Posted by the_lone_wolf

rear tyre is 17 inches in diameter

Wheel is 17", tyre is a bit more

[the_lone_wolf]

Originally Posted by northwind

Wheel is 17", tyre is a bit more

lol, i'm not 100% certain but i think we might have covered that one

[northwind]

Originally Posted by the_lone_wolf

lol, i'm not 100% certain but i think we might have covered that one

Ah, look, there's more than one page! Who would have thought it

Anyhoo. If it's any use, I just fired up my Veypor for a moment, and my old 160 rear roadtec had a circumference of 1.86 metres apparently- and I measured that with string, so it must be right

...

[the_lone_wolf]

Originally Posted by stuartyboy

An honours degree in Electronic Engineering with Maths & Semiconductor Physics actually! Several years teaching physics and employed as a process engineer - which believe it or not involves physics and maths.

i have an honours degree in physics, what do i win?

The "formulae" are equations actually

incorrect again, seeing as how we're going for semantics i'll elaborate for your convenience...

an equation is simply 2 expressions that are equal, for example: 2 * 4.5 = 3a

in all cases this could also be called a formula, in fact the only time a formula cannot be an equation is as thus; the formula 3x > 2y could not be called an equation, because the two sides do not equate, one is greater than the other

quoted from a ducati 2003 749 performance manual. You'll be telling us Ducati are wrong next. I don't need to prove anything mate.

i'm sure ducati are very good at producing equations for ducatis - the formula you quote completely fails to take into account that the primary and final gear reductions will be different on an SV than a ducati

if you want to remain at all credible i'd say you do have something to prove, i've pretty much shown your formulae to be completely meaningless by doing something as simple as applying numbers from a real world situation to give a ludicrously disproportionate answer

show me how you can make 2nd gear, with a ratio of 1.777, 30mph, 5000rpm at the engine and a total wheel diameter of 0.624m fit into this formula:

rpm = (mph x gear ratio x 336) / diameter

i would bet you can't, and that's why you just keep shouting it louder each time i prove you wrong

perhaps if you spent more time applying what you learned in "Electronic Engineering with Maths & Semiconductor Physics" and less time quoting books you'd have more luck, just a thought here but you should take a quick look at what you've written and see, even if it's just to reassure yourself, that when you plug in the numbers that the formula actually works

calm down...pm'd

[the_lone_wolf]

calm down? i was just reiterating the main points of my argument whilst dispelling some of the inaccuracies in yours, the rolleyes were there because it's obvious enough to cause blindness that the formulae you quote don't work, so pretty frustrating to watch someone defend them without even trying them out for themselves

PM received, fair enough, i can understand why you don't want to debate the subject...

as for keeping the "insults" off the public forum, what insults are these? and does that mean it would be ok to insult you in private? - just kidding

I've edited out all my posts on this thread because of Lone wolf. I don't want to be associated with or debate anything this guy says.

A PM was sent to him and that should have remained private. Instead he publishes the pm on the open forum - totally out of order.

For anyone that's interested I have a motorcycle data calculator. It wasn't written by me but it works out all the rpms, speeds, wheel rpms, ratios for you. It's in excel spreadsheet format and works for any bike. Its also accurate.

If you want a copy then PM me.

Also there's a nifty calculator online

http://www.bikerenews.com/Stories_Ar...Calculator.htm

[the_lone_wolf]

Originally Posted by stuartyboy

The PM I sent you was private. You then respond by publishing details on the public forum. Cheap shot.

details? oh right, the insults, what were they again?

if you thought that was cheap perhaps i should get a few friends to send you threatening PMs, now that would be a cheap shot