Jump to content
SAU Community

Recommended Posts

  • Replies 250
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

this is where its @

engine dynod first then into the shop on the dynapack.... no bullshit "roller derived tractive effort" figures... just look at the torque (cold hard real torque).... i can tell you now nothing compares to driving something with this much horsepower and torque... and this is a daily driver, that returns 10-14l/100km

So what you trying to say here is the engine dyno gave the same results as the dynapack?

Or are you just flexing your e-wang ya show off...... :D

Ok so assuming a 1000rpm drop of changing up gears, when would you change gears on this monster car?

If your about torque then I would predict just above 5,000rpm and if your about power then around 6,500rpm.

Ok so assuming a 1000rpm drop of changing up gears, when would you change gears on this monster car?

If your about torque then I would predict just above 5,000rpm and if your about power then around 6,500rpm.

Well if you thought that torque was the key to a fast car you would shift to maintain max average torque over the rpm range, and do the same for horsepower, obviously shifting to maximise max horsepower over the rev range makes a car faster, not peak torque.

You must read this thread: http://www.allpar.com/eek/hp-vs-torque.html

I think that solves all the issues.

we have already come to a conclusion and I believe everyone is happy they understand it, to maximise performance you want to shift at peak power and keep peak power under the curve, not peak torque under the curve, are you saying this is incorrect?

edit: that link says the same thing, so I'm assuming you are in agreeable with everyone?

Edited by Rolls
we have already come to a conclusion and I believe everyone is happy they understand it, to maximise performance you want to shift at peak power and keep peak power under the curve, not peak torque under the curve, are you saying this is incorrect?

edit: that link says the same thing, so I'm assuming you are in agreeable with everyone?

Yup I am agreeing. I just think its a really good comprehensive explanation of it.

  • 2 weeks later...

That was an awesome explanation of the problem.. its funny how he summed up so many points me n rolls covered.. with the whole cvt etc,

and this bit

"Hmmm... P = F * V ...rearrange to get F = P / V ...

that means that you get the maximum force pushing the car if you maximize your *Power* at any given velocity. This gives us another useful rule:

Shift to maximize engine POWER, not engine torque!"

funnily enough i had to use all these formulas for my exam today, except i had to calculate the maximum power i could get a car to produce at 80kmph and the equivalent engine rpm with different gears and the diff, subtract the drag power loses, then calculate the maximum hill gradient the 1800kg car could cruise up, P=mg sin(hill angle) * velocity ftw :thumbsup:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
    • Well the articals keep saying a Q50s (Skyline in Japan) with a new Manual gearbox. I like the talk about the new looks with the round tail lights. I hope they bring back the retro look like they did with the Z
    • Off the back of feedback we have decided to mix up this next Motorkhana at Avalon to have some targeted skills practice for beginners to advanced. Saturday 6th September 2025 8:30am Capped 26 entries Standard Entry Fee: $89 Members Entry Fee: $55 (SAU Victoria Only) Entries Close: Friday 5th February  Where: 55 beach road Avalon. https://maps.app.goo.gl/HNUE3EuNue3sJxh38 Entries: Limited to 26 entrants (Passengers allowed over the age of 14 with a signed disclaimer and same safety gear) Disclaimer: Download  Please electronically sign and email to [email protected] or print and hand in and Driver Sign In. To compete in this event you will require A valid  AASA General Speed licence or (Day license via the AASA Website for $50) MA Licenses are no longer accepted by AASA https://aasa.com.au/  A helmet, long sleeve clothing and a 1KG mounted fire extinguisher recommended (But not Mandatory). Further details within Supp Regs on the enty link. Entry Link > https://www.sauvic.com.au/entry/deca/20250906 You can bring and have a passenger in the car but they need to comply to the same safety and clothing as driver. Bring your car and get to battle others, win, lose or draw. I can guarantee you will have lots of fun. Any questions email [email protected] Entry List: 1.Anna S 2. Luke S 3. Jesse Givens-Lamb 4. Luca Stamatescu 5. Madeleine Stamatescu    
    • Wanna rewrite all of that in, say, 2 or 3 separate sentences, so that we can read it?
×
×
  • Create New...