Quote from wheel4hummer :

The LS1 isn't all that big you know. I just don't see the point of a rotary engine. The LS1 is only 200lbs more, more power, more torque, better fuel economy, why are rotarys so good? They arent IMO.

I wasn't saying they were 'so good' - I was saying they have their upsides. They have their downsides too - they're shitful as a passenger car engine and at best 'marginal' in a sportscar role. For more performance oriented, or more steady load, applications, their characteristics are often pretty decent.
I don't understand how you can talk about a difference in engine weight of 'only 200lbs'. That's really a fairly signifigant mass to have both sitting higher and further forward in the engine bay.

Quote from wheel4hummer :

Rotary engines aren't really all that great. I have seen LS1 powered RX7s on the internet, and the LS1 only weighs 200lbs more. So, 200lbs more, but more HP and torque evens it out.

depends on priorities. The great benefit of the wankel is it's packaging - small and reasonably light, can be stuffed in right at the back of the engine bay, better mass distribution = better handling. There is more to building a sportscar than numbers found in a magazine...

why do other users care if a few users crack s2? Surely that should be the devs concern? Anyone enjoying the game to it's fullest has paid for it.

looked like a laugh to me

sticking a car up the outside of someone not on their race line is a great racing tactic imho. Just because you're in front doesn't mean you have full choice of the road - you just get the luxury of continuing your current line unimpeded.

I've always enjoyed it as long as the racing is good and I've driven well. Whether that leaves me in 20th or 1st I don't really mind.

Quote from z3r0c00l :

Additionally - if you want to win races, you have to be both smooth and fast, neither of which are attainable by consulting the Speedometer. Driving should be anticipated control, not reacted responses.

Depends what level of driving you are aiming to achieve. When squeezing the last bit out of the car being able to see my speed is extremely useful to me. You may be fast without doing so - I suspect there are plenty faster that do so.

fair call. Didn't happen on Aussie ones.

Quote from Nick_ll :

Good points you make, but on this particular one, wouldn't the XRT have wider rear tires than fronts?
I would expect such a car to have 225's rear and something like 205 up front.

I don't believe either the starion or rx7 ever came with wider rear tyres than fronts - it's not a common thing the factory would go for.

the cars should either be balanced or unclassed, and not close enough in performance to class. having classes with 1 clear winner narrows the depth of cars used in lfs massively.

if league organisers ran rb4/xrt and fxr / xrr leagues, there would at least be 2 reasonable car choices instead of one...

I have no idea why... works fine here :|

lx6 so long reversed.

http://members.iinet.net.au/~cdriver/LX6_soLrevq7race.zip

ran 1:46.87 (quicker than current wr) for qual recently, should be pretty easy to drive too. tyres got a little hot after 8 laps so may need tweaking as a longer distance race set.

Hey folks. Figured I'd post the link to a few wrapup movies from one of our Australian leagues, Monday Night Racing. All movies are around 100mb. Most recent one isn't listed under files yet but can be found under news.

http://www.mondaynightracing.com/files.php

Quote from tristancliffe :

Catalysts are very sensitive, as I'm sure you're aware, to mixtures far from stoich, quite apart from the detonation issues (which could be resolved by retarding the ignition), and I'd have thought that even a few seconds of leanness a day would eventually do nasty things to it.

A quick search has a few people talking about pulsing the injectors on occasionally during DFCO (automotive acronym for deceleration fuel cut off, useful for further searches if you're keen) and I know my car kills one bank of injectors before the other - whether that's enough to mitigate any damage, or even whether the damage is worth worrying about, I have no idea.

Quote from evilgeek :

of course it would be simple to program the ecu to tell the injectors to do whatever you want, but unless you have an actual example of a motor that cuts them off, then you are speculating just as much as anyone else. i don;t doubt that some motors reduce the amount of fuel injected at high revs and low throttle, but i am still highly doubtful that any engine would cut the injection completely off, because of the potential damage to the motor. that was my only point, and i don't see why you gotta be so sarcastic.

I posted a few links in the reply to Tristan. My own car, built way back in 1988, has this feature, and it is one of the most dangerous around to run on a lean condition - turbo rotary and all that. Wasn't trying to be particularly sarcastic, I just find it interesting how many people post answers in threads like this without having the answer - but I guess I wasn't expecting deceleration fuel cut to come as such a surprise to people.

but... that'd be a balanced car class? We don't deserve them...

Quote from tristancliffe :

On a gasoline engine, if the throttle is close, the rpms are high and no fuel is added, then it would all go very very lean - this is bad for catalysts, and could potentially cause detonation in the worse cases. Thus a certain amount of fuel is added to combust, so that the catalyst and engine remain safe, but it's a sufficiently small amount so as not to accelerate the engine and nullify the closing of the throttle.

But I might be wrong...

wrong
it's really not an uncommon feature at all.
I don't know heaps about stupidly lean combustion mechanics, but I doubt it's particularly similar to 18:1 style, sucking a gutful of air and running out of fuel, melt your pistons combustion - we'd be talking much less air.

http://fordfuelinjection.com/?p=64 see under deceleration
http://www.stealth316.com/2-fuelinjection.htm see deceleration fuel cut

2 links, no doubt plenty more if you're keen.

I tweaked the tps on my rx7 a while back to prevent this injector shutoff (15 years of age seems to have made it a little clunky) and the car drove really nicely but gave a lot of backfiring on overrun.

Quote from evilgeek :

so put two and two together, and you'll see that when coasting downhill, the motor is sucking at least some air into itself, and that the injection system will add some fuel to the mix, even though it usually wont be very much.

You don't think it's a simple matter to combine a tps signal of 0% and rpm signal above some arbitrary value, and cut power to the injectors? Or does everything still run on carburettors in Canada?

The amount of people keen to explain stuff without basic knowledge of how and why things works is always interesting...

Quote from wheel4hummer :

It is on a carburated car though. And, isnt it also called the "accelerator"?

It's not! The carby adds fuel because of the air flowing through it, it doesn't add fuel because you pressed the throttle.

most efi cars cut fuel at 0% throttle above a certain rpm.

I generally love the slippy street cars, but that arse heavy thing is horrible. lx6 all the way for me.

thinking back on all my lapping, the corner I think gives me the most trouble to get 'right' is the turn 1 combo on aston club reversed - coming down from high speed, on the brakes, drift right, opens out left. It's not very dangerous, but it was exceedingly rare for me to feel like I got all I could out of it.

Also agree that the final corner of westhill is a bugger to get right.
The bumpy sweeper on south city long reverse is dangerous (particularly for passing!!) but I've never had that much trouble doing it pretty well.

yeah, by 'arbitrarily preheated' I meant the current level of pre-heating (up to what, 90 degrees or so for some tyres?) seemed just as unrealistic as being able to adjust the temp - was curious why you didn't think so, I understand it's just an opinion and your not bashing it as gospel

Quote from tristancliffe :

I know realism isn't totally obtainable, otherwise we'd spend 100 hours working on the car for every hour we drive, but having configurable tyre temps just to make the whole process easier/quicker I personally think would spoil it.

Why do you think it would be worse than arbitrarily preheated tyres??

Quote from joeynuggetz :

I just wish we could get one, just one real world track. My dream would be to unleash LFS's superior physics on a real world track we play everyday in all the ISI based sims. This would be so fulfilling. Not sure what the devs are waiting for. Do like ISI did and call it something else to avoid the licensing issues. Heck, or even make a fictional track thats available in both sims. I'd be more than ok with that.

suppose you learnt that all the tracks in lfs were based on real tracks, but they were not 'big name' real tracks - would that change anything for you? I don't understand it.

Quote from XCNuse :

@jamex; no ones against it, its just that people are against the way other people bring up the topic and how they suggest it